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Memory used by the LPI tables have to be made persistent for kexec to have
a chance to work, as explained in [1]. If they have been made persistent
and we are booting into a kexec'd kernel, we also need to free the pages
that were preemptively allocated by the new kernel for those tables.
Both of those operations currently happen during its_cpu_init(), which
happens in a _STARTING (IOW atomic) cpuhp callback for secondary
CPUs. efi_mem_reserve_iomem() issues a GFP_ATOMIC allocation, which
unfortunately doesn't work under PREEMPT_RT (this ends up grabbing a
non-raw spinlock, which can sleep under PREEMPT_RT). Similarly, freeing the
pages ends up grabbing a sleepable spinlock.
Since the memreserve is only required by kexec, it doesn't have to be done
so early in the secondary boot process. Issue the reservation in a new
CPUHP_AP_ONLINE_DYN cpuhp callback, and piggy-back the page freeing on top
of it. A CPU gets to run the body of this new callback exactly once.
As kexec issues a machine_shutdown() prior to machine_kexec(), it will be
serialized vs a CPU being plugged to life by the hotplug machinery - either
the CPU will have been brought up and have had its redistributor's pending
table memreserved, or it never went online and will have its table
allocated by the new kernel.
[1]: https://lore.kernel.org/lkml/20180921195954.21574-1-marc.zyngier@arm.com/
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211027151506.2085066-3-valentin.schneider@arm.com
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Later patches will require tracking some per-rdist status. Reuse the bytes
"lost" to padding within the __percpu rdist struct as a flags field, and
re-encode ->lpi_enabled within said flags.
No change in functionality intended.
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211027151506.2085066-2-valentin.schneider@arm.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Borislav Petkov:
- Properly init uclamp_flags of a runqueue, on first enqueuing
- Fix preempt= callback return values
- Correct utime/stime resource usage reporting on nohz_full to return
the proper times instead of shorter ones
* tag 'sched_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/uclamp: Fix rq->uclamp_max not set on first enqueue
preempt/dynamic: Fix setup_preempt_mode() return value
sched/cputime: Fix getrusage(RUSAGE_THREAD) with nohz_full
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Pull drm fixes from Dave Airlie:
"Bit of an uptick in patch count this week, though it's all relatively
small overall.
I suspect msm has been queuing up a few fixes to skew it here.
Otherwise amdgpu has a scattered bunch of small fixes, and then some
vc4, i915.
virtio-gpu changes an rc1 introduced uAPI mistake, and makes it
operate more like other drivers. This should be fine as no userspace
relies on the behaviour yet.
Summary:
dma-buf:
- memory leak fix
msm:
- kasan found memory overwrite
- mmap flags
- fencing error bug
- ioctl NULL ptr
- uninit var
- devfreqless devices fix
- dsi lanes fix
- dp: avoid unpowered aux xfers
amdgpu:
- IP discovery based enumeration fixes
- vkms fixes
- DSC fixes for DP MST
- Audio fix for hotplug with tiled displays
- Misc display fixes
- DP tunneling fix
- DP fix
- Aldebaran fix
amdkfd:
- Locking fix
- Static checker fix
- Fix double free
i915:
- backlight regression
- Intel HDR backlight detection fix
- revert TGL workaround that caused hangs
virtio-gpu:
- switch back to drm_poll
vc4:
- memory leak
- error check fix
- HVS modesetting fixes"
* tag 'drm-fixes-2021-12-03-1' of git://anongit.freedesktop.org/drm/drm: (41 commits)
Revert "drm/i915: Implement Wa_1508744258"
drm/amdkfd: process_info lock not needed for svm
drm/amdgpu: adjust the kfd reset sequence in reset sriov function
drm/amd/display: add connector type check for CRC source set
drm/amdkfd: fix double free mem structure
drm/amdkfd: set "r = 0" explicitly before goto
drm/amd/display: Add work around for tunneled MST.
drm/amd/display: Fix for the no Audio bug with Tiled Displays
drm/amd/display: Clear DPCD lane settings after repeater training
drm/amd/display: Allow DSC on supported MST branch devices
drm/amdgpu: Don't halt RLC on GFX suspend
drm/amdgpu: fix the missed handling for SDMA2 and SDMA3
drm/amdgpu: check atomic flag to differeniate with legacy path
drm/amdgpu: cancel the correct hrtimer on exit
drm/amdgpu/sriov/vcn: add new vcn ip revision check case for SIENNA_CICHLID
drm/i915/dp: Perform 30ms delay after source OUI write
dma-buf: system_heap: Use 'for_each_sgtable_sg' in pages free flow
drm/i915: Add support for panels with VESA backlights with PWM enable/disable
drm/vc4: kms: Fix previous HVS commit wait
drm/vc4: kms: Don't duplicate pending commit
...
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Switch back to drm_poll for virtio, multiple fixes (memory leak,
improper error check, some functional fixes too) for vc4, memory leak
fix in dma-buf,
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211202084440.u3b7lbeulj7k3ltg@houat
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from wireless, and wireguard.
Mostly scattered driver changes this week, with one big clump in
mv88e6xxx. Nothing of note, really.
Current release - regressions:
- smc: keep smc_close_final()'s error code during active close
Current release - new code bugs:
- iwlwifi: various static checker fixes (int overflow, leaks, missing
error codes)
- rtw89: fix size of firmware header before transfer, avoid crash
- mt76: fix timestamp check in tx_status; fix pktid leak;
- mscc: ocelot: fix missing unlock on error in ocelot_hwstamp_set()
Previous releases - regressions:
- smc: fix list corruption in smc_lgr_cleanup_early
- ipv4: convert fib_num_tclassid_users to atomic_t
Previous releases - always broken:
- tls: fix authentication failure in CCM mode
- vrf: reset IPCB/IP6CB when processing outbound pkts, prevent
incorrect processing
- dsa: mv88e6xxx: fixes for various device errata
- rds: correct socket tunable error in rds_tcp_tune()
- ipv6: fix memory leak in fib6_rule_suppress
- wireguard: reset peer src endpoint when netns exits
- wireguard: improve resilience to DoS around incoming handshakes
- tcp: fix page frag corruption on page fault which involves TCP
- mpls: fix missing attributes in delete notifications
- mt7915: fix NULL pointer dereference with ad-hoc mode
Misc:
- rt2x00: be more lenient about EPROTO errors during start
- mlx4_en: update reported link modes for 1/10G"
* tag 'net-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits)
net: dsa: b53: Add SPI ID table
gro: Fix inconsistent indenting
selftests: net: Correct case name
net/rds: correct socket tunable error in rds_tcp_tune()
mctp: Don't let RTM_DELROUTE delete local routes
net/smc: Keep smc_close_final rc during active close
ibmvnic: drop bad optimization in reuse_tx_pools()
ibmvnic: drop bad optimization in reuse_rx_pools()
net/smc: fix wrong list_del in smc_lgr_cleanup_early
Fix Comment of ETH_P_802_3_MIN
ethernet: aquantia: Try MAC address from device tree
ipv4: convert fib_num_tclassid_users to atomic_t
net: avoid uninit-value from tcp_conn_request
net: annotate data-races on txq->xmit_lock_owner
octeontx2-af: Fix a memleak bug in rvu_mbox_init()
net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()
vrf: Reset IPCB/IP6CB when processing outbound pkts in vrf dev xmit
net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings()
net: dsa: mv88e6xxx: Link in pcs_get_state() if AN is bypassed
net: dsa: mv88e6xxx: Fix inband AN for 2500base-x on 88E6393X family
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Three tracing fixes:
- Allow compares of strings when using signed and unsigned characters
- Fix kmemleak false positive for histogram entries
- Handle negative numbers for user defined kretprobe data sizes"
* tag 'trace-v5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
kprobes: Limit max data_size of the kretprobe instances
tracing: Fix a kmemleak false positive in tracing_map
tracing/histograms: String compares should not care about signed values
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getrusage(RUSAGE_THREAD) with nohz_full may return shorter utime/stime
than the actual time.
task_cputime_adjusted() snapshots utime and stime and then adjust their
sum to match the scheduler maintained cputime.sum_exec_runtime.
Unfortunately in nohz_full, sum_exec_runtime is only updated once per
second in the worst case, causing a discrepancy against utime and stime
that can be updated anytime by the reader using vtime.
To fix this situation, perform an update of cputime.sum_exec_runtime
when the cputime snapshot reports the task as actually running while
the tick is disabled. The related overhead is then contained within the
relevant situations.
Reported-by: Hasegawa Hitomi <hasegawa-hitomi@fujitsu.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Hasegawa Hitomi <hasegawa-hitomi@fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Acked-by: Phil Auld <pauld@redhat.com>
Link: https://lore.kernel.org/r/20211026141055.57358-3-frederic@kernel.org
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The description of ETH_P_802_3_MIN is misleading.
The value of EthernetType in Ethernet II frame is more than 0x0600,
the value of Length in 802.3 frame is less than 0x0600.
Signed-off-by: Xiayu Zhang <Xiayu.Zhang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Before commit faa041a40b9f ("ipv4: Create cleanup helper for fib_nh")
changes to net->ipv4.fib_num_tclassid_users were protected by RTNL.
After the change, this is no longer the case, as free_fib_info_rcu()
runs after rcu grace period, without rtnl being held.
Fixes: faa041a40b9f ("ipv4: Create cleanup helper for fib_nh")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Ahern <dsahern@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A recent change triggers a KMSAN warning, because request
sockets do not initialize @sk_rx_queue_mapping field.
Add sk_rx_queue_update() helper to make our intent clear.
BUG: KMSAN: uninit-value in sk_rx_queue_set include/net/sock.h:1922 [inline]
BUG: KMSAN: uninit-value in tcp_conn_request+0x3bcc/0x4dc0 net/ipv4/tcp_input.c:6922
sk_rx_queue_set include/net/sock.h:1922 [inline]
tcp_conn_request+0x3bcc/0x4dc0 net/ipv4/tcp_input.c:6922
tcp_v4_conn_request+0x218/0x2a0 net/ipv4/tcp_ipv4.c:1528
tcp_rcv_state_process+0x2c5/0x3290 net/ipv4/tcp_input.c:6406
tcp_v4_do_rcv+0xb4e/0x1330 net/ipv4/tcp_ipv4.c:1738
tcp_v4_rcv+0x468d/0x4ed0 net/ipv4/tcp_ipv4.c:2100
ip_protocol_deliver_rcu+0x760/0x10b0 net/ipv4/ip_input.c:204
ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip_local_deliver+0x584/0x8c0 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:460 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:551 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:601 [inline]
ip_sublist_rcv+0x11fd/0x1520 net/ipv4/ip_input.c:609
ip_list_rcv+0x95f/0x9a0 net/ipv4/ip_input.c:644
__netif_receive_skb_list_ptype net/core/dev.c:5505 [inline]
__netif_receive_skb_list_core+0xe34/0x1240 net/core/dev.c:5553
__netif_receive_skb_list+0x7fc/0x960 net/core/dev.c:5605
netif_receive_skb_list_internal+0x868/0xde0 net/core/dev.c:5696
gro_normal_list net/core/dev.c:5850 [inline]
napi_complete_done+0x579/0xdd0 net/core/dev.c:6587
virtqueue_napi_complete drivers/net/virtio_net.c:339 [inline]
virtnet_poll+0x17b6/0x2350 drivers/net/virtio_net.c:1557
__napi_poll+0x14e/0xbc0 net/core/dev.c:7020
napi_poll net/core/dev.c:7087 [inline]
net_rx_action+0x824/0x1880 net/core/dev.c:7174
__do_softirq+0x1fe/0x7eb kernel/softirq.c:558
invoke_softirq+0xa4/0x130 kernel/softirq.c:432
__irq_exit_rcu kernel/softirq.c:636 [inline]
irq_exit_rcu+0x76/0x130 kernel/softirq.c:648
common_interrupt+0xb6/0xd0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40
smap_restore arch/x86/include/asm/smap.h:67 [inline]
get_shadow_origin_ptr mm/kmsan/instrumentation.c:31 [inline]
__msan_metadata_ptr_for_load_1+0x28/0x30 mm/kmsan/instrumentation.c:63
tomoyo_check_acl+0x1b0/0x630 security/tomoyo/domain.c:173
tomoyo_path_permission security/tomoyo/file.c:586 [inline]
tomoyo_check_open_permission+0x61f/0xe10 security/tomoyo/file.c:777
tomoyo_file_open+0x24f/0x2d0 security/tomoyo/tomoyo.c:311
security_file_open+0xb1/0x1f0 security/security.c:1635
do_dentry_open+0x4e4/0x1bf0 fs/open.c:809
vfs_open+0xaf/0xe0 fs/open.c:957
do_open fs/namei.c:3426 [inline]
path_openat+0x52f1/0x5dd0 fs/namei.c:3559
do_filp_open+0x306/0x760 fs/namei.c:3586
do_sys_openat2+0x263/0x8f0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_open fs/open.c:1236 [inline]
__se_sys_open fs/open.c:1232 [inline]
__x64_sys_open+0x314/0x380 fs/open.c:1232
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x44/0xae
Uninit was created at:
__alloc_pages+0xbc7/0x10a0 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
alloc_slab_page mm/slub.c:1810 [inline]
allocate_slab+0x287/0x1c20 mm/slub.c:1947
new_slab mm/slub.c:2010 [inline]
___slab_alloc+0xbdf/0x1e90 mm/slub.c:3039
__slab_alloc mm/slub.c:3126 [inline]
slab_alloc_node mm/slub.c:3217 [inline]
slab_alloc mm/slub.c:3259 [inline]
kmem_cache_alloc+0xbb3/0x11c0 mm/slub.c:3264
reqsk_alloc include/net/request_sock.h:91 [inline]
inet_reqsk_alloc+0xaf/0x8b0 net/ipv4/tcp_input.c:6712
tcp_conn_request+0x910/0x4dc0 net/ipv4/tcp_input.c:6852
tcp_v4_conn_request+0x218/0x2a0 net/ipv4/tcp_ipv4.c:1528
tcp_rcv_state_process+0x2c5/0x3290 net/ipv4/tcp_input.c:6406
tcp_v4_do_rcv+0xb4e/0x1330 net/ipv4/tcp_ipv4.c:1738
tcp_v4_rcv+0x468d/0x4ed0 net/ipv4/tcp_ipv4.c:2100
ip_protocol_deliver_rcu+0x760/0x10b0 net/ipv4/ip_input.c:204
ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip_local_deliver+0x584/0x8c0 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:460 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:551 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:601 [inline]
ip_sublist_rcv+0x11fd/0x1520 net/ipv4/ip_input.c:609
ip_list_rcv+0x95f/0x9a0 net/ipv4/ip_input.c:644
__netif_receive_skb_list_ptype net/core/dev.c:5505 [inline]
__netif_receive_skb_list_core+0xe34/0x1240 net/core/dev.c:5553
__netif_receive_skb_list+0x7fc/0x960 net/core/dev.c:5605
netif_receive_skb_list_internal+0x868/0xde0 net/core/dev.c:5696
gro_normal_list net/core/dev.c:5850 [inline]
napi_complete_done+0x579/0xdd0 net/core/dev.c:6587
virtqueue_napi_complete drivers/net/virtio_net.c:339 [inline]
virtnet_poll+0x17b6/0x2350 drivers/net/virtio_net.c:1557
__napi_poll+0x14e/0xbc0 net/core/dev.c:7020
napi_poll net/core/dev.c:7087 [inline]
net_rx_action+0x824/0x1880 net/core/dev.c:7174
__do_softirq+0x1fe/0x7eb kernel/softirq.c:558
Fixes: 342159ee394d ("net: avoid dirtying sk->sk_rx_queue_mapping")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20211130182939.2584764-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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syzbot found that __dev_queue_xmit() is reading txq->xmit_lock_owner
without annotations.
No serious issue there, let's document what is happening there.
BUG: KCSAN: data-race in __dev_queue_xmit / __dev_queue_xmit
write to 0xffff888139d09484 of 4 bytes by interrupt on cpu 0:
__netif_tx_unlock include/linux/netdevice.h:4437 [inline]
__dev_queue_xmit+0x948/0xf70 net/core/dev.c:4229
dev_queue_xmit_accel+0x19/0x20 net/core/dev.c:4265
macvlan_queue_xmit drivers/net/macvlan.c:543 [inline]
macvlan_start_xmit+0x2b3/0x3d0 drivers/net/macvlan.c:567
__netdev_start_xmit include/linux/netdevice.h:4987 [inline]
netdev_start_xmit include/linux/netdevice.h:5001 [inline]
xmit_one+0x105/0x2f0 net/core/dev.c:3590
dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606
sch_direct_xmit+0x1b2/0x7c0 net/sched/sch_generic.c:342
__dev_xmit_skb+0x83d/0x1370 net/core/dev.c:3817
__dev_queue_xmit+0x590/0xf70 net/core/dev.c:4194
dev_queue_xmit+0x13/0x20 net/core/dev.c:4259
neigh_hh_output include/net/neighbour.h:511 [inline]
neigh_output include/net/neighbour.h:525 [inline]
ip6_finish_output2+0x995/0xbb0 net/ipv6/ip6_output.c:126
__ip6_finish_output net/ipv6/ip6_output.c:191 [inline]
ip6_finish_output+0x444/0x4c0 net/ipv6/ip6_output.c:201
NF_HOOK_COND include/linux/netfilter.h:296 [inline]
ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:224
dst_output include/net/dst.h:450 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ndisc_send_skb+0x486/0x610 net/ipv6/ndisc.c:508
ndisc_send_rs+0x3b0/0x3e0 net/ipv6/ndisc.c:702
addrconf_rs_timer+0x370/0x540 net/ipv6/addrconf.c:3898
call_timer_fn+0x2e/0x240 kernel/time/timer.c:1421
expire_timers+0x116/0x240 kernel/time/timer.c:1466
__run_timers+0x368/0x410 kernel/time/timer.c:1734
run_timer_softirq+0x2e/0x60 kernel/time/timer.c:1747
__do_softirq+0x158/0x2de kernel/softirq.c:558
__irq_exit_rcu kernel/softirq.c:636 [inline]
irq_exit_rcu+0x37/0x70 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
read to 0xffff888139d09484 of 4 bytes by interrupt on cpu 1:
__dev_queue_xmit+0x5e3/0xf70 net/core/dev.c:4213
dev_queue_xmit_accel+0x19/0x20 net/core/dev.c:4265
macvlan_queue_xmit drivers/net/macvlan.c:543 [inline]
macvlan_start_xmit+0x2b3/0x3d0 drivers/net/macvlan.c:567
__netdev_start_xmit include/linux/netdevice.h:4987 [inline]
netdev_start_xmit include/linux/netdevice.h:5001 [inline]
xmit_one+0x105/0x2f0 net/core/dev.c:3590
dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606
sch_direct_xmit+0x1b2/0x7c0 net/sched/sch_generic.c:342
__dev_xmit_skb+0x83d/0x1370 net/core/dev.c:3817
__dev_queue_xmit+0x590/0xf70 net/core/dev.c:4194
dev_queue_xmit+0x13/0x20 net/core/dev.c:4259
neigh_resolve_output+0x3db/0x410 net/core/neighbour.c:1523
neigh_output include/net/neighbour.h:527 [inline]
ip6_finish_output2+0x9be/0xbb0 net/ipv6/ip6_output.c:126
__ip6_finish_output net/ipv6/ip6_output.c:191 [inline]
ip6_finish_output+0x444/0x4c0 net/ipv6/ip6_output.c:201
NF_HOOK_COND include/linux/netfilter.h:296 [inline]
ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:224
dst_output include/net/dst.h:450 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ndisc_send_skb+0x486/0x610 net/ipv6/ndisc.c:508
ndisc_send_rs+0x3b0/0x3e0 net/ipv6/ndisc.c:702
addrconf_rs_timer+0x370/0x540 net/ipv6/addrconf.c:3898
call_timer_fn+0x2e/0x240 kernel/time/timer.c:1421
expire_timers+0x116/0x240 kernel/time/timer.c:1466
__run_timers+0x368/0x410 kernel/time/timer.c:1734
run_timer_softirq+0x2e/0x60 kernel/time/timer.c:1747
__do_softirq+0x158/0x2de kernel/softirq.c:558
__irq_exit_rcu kernel/softirq.c:636 [inline]
irq_exit_rcu+0x37/0x70 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
kcsan_setup_watchpoint+0x94/0x420 kernel/kcsan/core.c:443
folio_test_anon include/linux/page-flags.h:581 [inline]
PageAnon include/linux/page-flags.h:586 [inline]
zap_pte_range+0x5ac/0x10e0 mm/memory.c:1347
zap_pmd_range mm/memory.c:1467 [inline]
zap_pud_range mm/memory.c:1496 [inline]
zap_p4d_range mm/memory.c:1517 [inline]
unmap_page_range+0x2dc/0x3d0 mm/memory.c:1538
unmap_single_vma+0x157/0x210 mm/memory.c:1583
unmap_vmas+0xd0/0x180 mm/memory.c:1615
exit_mmap+0x23d/0x470 mm/mmap.c:3170
__mmput+0x27/0x1b0 kernel/fork.c:1113
mmput+0x3d/0x50 kernel/fork.c:1134
exit_mm+0xdb/0x170 kernel/exit.c:507
do_exit+0x608/0x17a0 kernel/exit.c:819
do_group_exit+0xce/0x180 kernel/exit.c:929
get_signal+0xfc3/0x1550 kernel/signal.c:2852
arch_do_signal_or_restart+0x8c/0x2e0 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x113/0x190 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300
do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
value changed: 0x00000000 -> 0xffffffff
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 28712 Comm: syz-executor.0 Tainted: G W 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20211130170155.2331929-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
The 'kprobe::data_size' is unsigned, thus it can not be negative. But if
user sets it enough big number (e.g. (size_t)-8), the result of 'data_size
+ sizeof(struct kretprobe_instance)' becomes smaller than sizeof(struct
kretprobe_instance) or zero. In result, the kretprobe_instance are
allocated without enough memory, and kretprobe accesses outside of
allocated memory.
To avoid this issue, introduce a max limitation of the
kretprobe::data_size. 4KB per instance should be OK.
Link: https://lkml.kernel.org/r/163836995040.432120.10322772773821182925.stgit@devnote2
Cc: stable@vger.kernel.org
Fixes: f47cd9b553aa ("kprobes: kretprobe user entry-handler")
Reported-by: zhangyue <zhangyue1@kylinos.cn>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes. A large series is found for ASoC tegra
drivers to correct the control element handlings, while others are
mostly for device-specific quirks and fix-ups"
* tag 'sound-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits)
ALSA: hda/hdmi: fix HDA codec entry table order for ADL-P
ALSA: hda: Add Intel DG2 PCI ID and HDMI codec vid
ALSA: hda/cs8409: Set PMSG_ON earlier inside cs8409 driver
ASoC: SOF: hda: reset DAI widget before reconfiguring it
ASoC: cs35l41: Set the max SPI speed for the whole device
ALSA: intel-dsp-config: add quirk for CML devices based on ES8336 codec
ASoC: Intel: soc-acpi: add entry for ESSX8336 on CML
ASoC: rk817: Add module alias for rk817-codec
ASoC: soc-acpi: Set mach->id field on comp_ids matches
ASoC: tegra: Fix kcontrol put callback in Mixer
ASoC: tegra: Fix kcontrol put callback in ADX
ASoC: tegra: Fix kcontrol put callback in AMX
ASoC: tegra: Fix kcontrol put callback in SFC
ASoC: tegra: Fix kcontrol put callback in MVC
ASoC: tegra: Fix kcontrol put callback in AHUB
ASoC: tegra: Fix kcontrol put callback in DSPK
ASoC: tegra: Fix kcontrol put callback in DMIC
ASoC: tegra: Fix kcontrol put callback in I2S
ASoC: tegra: Fix kcontrol put callback in ADMAIF
ASoC: tegra: Fix wrong value type in MVC
...
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Validate MRTC register is supported before triggering a delayed work
which accesses it.
Fixes: 5a1023deeed0 ("net/mlx5: Add periodic update of host time to firmware")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
|
|
On ARM v6 and later, we define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
because the ordinary load/store instructions (ldr, ldrh, ldrb) can
tolerate any misalignment of the memory address. However, load/store
double and load/store multiple instructions (ldrd, ldm) may still only
be used on memory addresses that are 32-bit aligned, and so we have to
use the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS macro with care, or we
may end up with a severe performance hit due to alignment traps that
require fixups by the kernel. Testing shows that this currently happens
with clang-13 but not gcc-11. In theory, any compiler version can
produce this bug or other problems, as we are dealing with undefined
behavior in C99 even on architectures that support this in hardware,
see also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363.
Fortunately, the get_unaligned() accessors do the right thing: when
building for ARMv6 or later, the compiler will emit unaligned accesses
using the ordinary load/store instructions (but avoid the ones that
require 32-bit alignment). When building for older ARM, those accessors
will emit the appropriate sequence of ldrb/mov/orr instructions. And on
architectures that can truly tolerate any kind of misalignment, the
get_unaligned() accessors resolve to the leXX_to_cpup accessors that
operate on aligned addresses.
Since the compiler will in fact emit ldrd or ldm instructions when
building this code for ARM v6 or later, the solution is to use the
unaligned accessors unconditionally on architectures where this is
known to be fast. The _aligned version of the hash function is
however still needed to get the best performance on architectures
that cannot do any unaligned access in hardware.
This new version avoids the undefined behavior and should produce
the fastest hash on all architectures we support.
Link: https://lore.kernel.org/linux-arm-kernel/20181008211554.5355-4-ard.biesheuvel@linaro.org/
Link: https://lore.kernel.org/linux-crypto/CAK8P3a2KfmmGDbVHULWevB0hv71P2oi2ZCHEAqT=8dQfa0=cqQ@mail.gmail.com/
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: 2c956a60778c ("siphash: add cryptographically secure PRF")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Each peer's endpoint contains a dst_cache entry that takes a reference
to another netdev. When the containing namespace exits, we take down the
socket and prevent future sockets from being created (by setting
creating_net to NULL), which removes that potential reference on the
netns. However, it doesn't release references to the netns that a netdev
cached in dst_cache might be taking, so the netns still might fail to
exit. Since the socket is gimped anyway, we can simply clear all the
dst_caches (by way of clearing the endpoint src), which will release all
references.
However, the current dst_cache_reset function only releases those
references lazily. But it turns out that all of our usages of
wg_socket_clear_peer_endpoint_src are called from contexts that are not
exactly high-speed or bottle-necked. For example, when there's
connection difficulty, or when userspace is reconfiguring the interface.
And in particular for this patch, when the netns is exiting. So for
those cases, it makes more sense to call dst_release immediately. For
that, we add a small helper function to dst_cache.
This patch also adds a test to netns.sh from Hangbin Liu to ensure this
doesn't regress.
Tested-by: Hangbin Liu <liuhangbin@gmail.com>
Reported-by: Xiumei Mu <xmu@redhat.com>
Cc: Toke Høiland-Jørgensen <toke@redhat.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Fixes: 900575aa33a3 ("wireguard: device: avoid circular netns references")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
The kernel leaks memory when a `fib` rule is present in IPv6 nftables
firewall rules and a suppress_prefix rule is present in the IPv6 routing
rules (used by certain tools such as wg-quick). In such scenarios, every
incoming packet will leak an allocation in `ip6_dst_cache` slab cache.
After some hours of `bpftrace`-ing and source code reading, I tracked
down the issue to ca7a03c41753 ("ipv6: do not free rt if
FIB_LOOKUP_NOREF is set on suppress rule").
The problem with that change is that the generic `args->flags` always have
`FIB_LOOKUP_NOREF` set[1][2] but the IPv6-specific flag
`RT6_LOOKUP_F_DST_NOREF` might not be, leading to `fib6_rule_suppress` not
decreasing the refcount when needed.
How to reproduce:
- Add the following nftables rule to a prerouting chain:
meta nfproto ipv6 fib saddr . mark . iif oif missing drop
This can be done with:
sudo nft create table inet test
sudo nft create chain inet test test_chain '{ type filter hook prerouting priority filter + 10; policy accept; }'
sudo nft add rule inet test test_chain meta nfproto ipv6 fib saddr . mark . iif oif missing drop
- Run:
sudo ip -6 rule add table main suppress_prefixlength 0
- Watch `sudo slabtop -o | grep ip6_dst_cache` to see memory usage increase
with every incoming ipv6 packet.
This patch exposes the protocol-specific flags to the protocol
specific `suppress` function, and check the protocol-specific `flags`
argument for RT6_LOOKUP_F_DST_NOREF instead of the generic
FIB_LOOKUP_NOREF when decreasing the refcount, like this.
[1]: https://github.com/torvalds/linux/blob/ca7a03c4175366a92cee0ccc4fec0038c3266e26/net/ipv6/fib6_rules.c#L71
[2]: https://github.com/torvalds/linux/blob/ca7a03c4175366a92cee0ccc4fec0038c3266e26/net/ipv6/fib6_rules.c#L99
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215105
Fixes: ca7a03c41753 ("ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Steffen reported a TCP stream corruption for HTTP requests
served by the apache web-server using a cifs mount-point
and memory mapping the relevant file.
The root cause is quite similar to the one addressed by
commit 20eb4f29b602 ("net: fix sk_page_frag() recursion from
memory reclaim"). Here the nested access to the task page frag
is caused by a page fault on the (mmapped) user-space memory
buffer coming from the cifs file.
The page fault handler performs an smb transaction on a different
socket, inside the same process context. Since sk->sk_allaction
for such socket does not prevent the usage for the task_frag,
the nested allocation modify "under the hood" the page frag
in use by the outer sendmsg call, corrupting the stream.
The overall relevant stack trace looks like the following:
httpd 78268 [001] 3461630.850950: probe:tcp_sendmsg_locked:
ffffffff91461d91 tcp_sendmsg_locked+0x1
ffffffff91462b57 tcp_sendmsg+0x27
ffffffff9139814e sock_sendmsg+0x3e
ffffffffc06dfe1d smb_send_kvec+0x28
[...]
ffffffffc06cfaf8 cifs_readpages+0x213
ffffffff90e83c4b read_pages+0x6b
ffffffff90e83f31 __do_page_cache_readahead+0x1c1
ffffffff90e79e98 filemap_fault+0x788
ffffffff90eb0458 __do_fault+0x38
ffffffff90eb5280 do_fault+0x1a0
ffffffff90eb7c84 __handle_mm_fault+0x4d4
ffffffff90eb8093 handle_mm_fault+0xc3
ffffffff90c74f6d __do_page_fault+0x1ed
ffffffff90c75277 do_page_fault+0x37
ffffffff9160111e page_fault+0x1e
ffffffff9109e7b5 copyin+0x25
ffffffff9109eb40 _copy_from_iter_full+0xe0
ffffffff91462370 tcp_sendmsg_locked+0x5e0
ffffffff91462370 tcp_sendmsg_locked+0x5e0
ffffffff91462b57 tcp_sendmsg+0x27
ffffffff9139815c sock_sendmsg+0x4c
ffffffff913981f7 sock_write_iter+0x97
ffffffff90f2cc56 do_iter_readv_writev+0x156
ffffffff90f2dff0 do_iter_write+0x80
ffffffff90f2e1c3 vfs_writev+0xa3
ffffffff90f2e27c do_writev+0x5c
ffffffff90c042bb do_syscall_64+0x5b
ffffffff916000ad entry_SYSCALL_64_after_hwframe+0x65
The cifs filesystem rightfully sets sk_allocations to GFP_NOFS,
we can avoid the nesting using the sk page frag for allocation
lacking the __GFP_FS flag. Do not define an additional mm-helper
for that, as this is strictly tied to the sk page frag usage.
v1 -> v2:
- use a stricted sk_page_frag() check instead of reordering the
code (Eric)
Reported-by: Steffen Froemer <sfroemer@redhat.com>
Fixes: 5640f7685831 ("net: use a per task frag allocator")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The current virtgpu implementation of poll(..) drops events
when VIRTGPU_CONTEXT_PARAM_POLL_RINGS_MASK is enabled (otherwise
it's like a normal DRM driver).
This is because paravirtualized userspaces receives responses in a
buffer of type BLOB_MEM_GUEST, not by read(..).
To be in line with other DRM drivers and avoid specialized behavior,
it is possible to define a dummy event for virtgpu. Paravirtualized
userspace will now have to call read(..) on the DRM fd to receive the
dummy event.
Fixes: b10790434cf2 ("drm/virtgpu api: create context init feature")
Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20211122232210.602-2-gurchetansingh@google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
|
|
Pull vhost,virtio,vdpa bugfixes from Michael Tsirkin:
"Misc fixes all over the place.
Revert of virtio used length validation series: the approach taken
does not seem to work, breaking too many guests in the process. We'll
need to do length validation using some other approach"
[ This merge also ends up reverting commit f7a36b03a732 ("vsock/virtio:
suppress used length validation"), which came in through the
networking tree in the meantime, and was part of that whole used
length validation series - Linus ]
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa_sim: avoid putting an uninitialized iova_domain
vhost-vdpa: clean irqs before reseting vdpa device
virtio-blk: modify the value type of num in virtio_queue_rq()
vhost/vsock: cleanup removing `len` variable
vhost/vsock: fix incorrect used length reported to the guest
Revert "virtio_ring: validate used buffer length"
Revert "virtio-net: don't let virtio core to validate used length"
Revert "virtio-blk: don't let virtio core to validate used length"
Revert "virtio-scsi: don't let virtio core to validate used buffer length"
|
|
Pull NFS client fixes from Trond Myklebust:
"Highlights include:
Stable fixes:
- NFSv42: Fix pagecache invalidation after COPY/CLONE
Bugfixes:
- NFSv42: Don't fail clone() just because the server failed to return
post-op attributes
- SUNRPC: use different lockdep keys for INET6 and LOCAL
- NFSv4.1: handle NFS4ERR_NOSPC from CREATE_SESSION
- SUNRPC: fix header include guard in trace header"
* tag 'nfs-for-5.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: use different lock keys for INET6 and LOCAL
sunrpc: fix header include guard in trace header
NFSv4.1: handle NFS4ERR_NOSPC by CREATE_SESSION
NFSv42: Fix pagecache invalidation after COPY/CLONE
NFS: Add a tracepoint to show the results of nfs_set_cache_invalid()
NFSv42: Don't fail clone() unless the OP_CLONE operation failed
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from netfilter.
Current release - regressions:
- r8169: fix incorrect mac address assignment
- vlan: fix underflow for the real_dev refcnt when vlan creation
fails
- smc: avoid warning of possible recursive locking
Current release - new code bugs:
- vsock/virtio: suppress used length validation
- neigh: fix crash in v6 module initialization error path
Previous releases - regressions:
- af_unix: fix change in behavior in read after shutdown
- igb: fix netpoll exit with traffic, avoid warning
- tls: fix splice_read() when starting mid-record
- lan743x: fix deadlock in lan743x_phy_link_status_change()
- marvell: prestera: fix bridge port operation
Previous releases - always broken:
- tcp_cubic: fix spurious Hystart ACK train detections for
not-cwnd-limited flows
- nexthop: fix refcount issues when replacing IPv6 groups
- nexthop: fix null pointer dereference when IPv6 is not enabled
- phylink: force link down and retrigger resolve on interface change
- mptcp: fix delack timer length calculation and incorrect early
clearing
- ieee802154: handle iftypes as u32, prevent shift-out-of-bounds
- nfc: virtual_ncidev: change default device permissions
- netfilter: ctnetlink: fix error codes and flags used for kernel
side filtering of dumps
- netfilter: flowtable: fix IPv6 tunnel addr match
- ncsi: align payload to 32-bit to fix dropped packets
- iavf: fix deadlock and loss of config during VF interface reset
- ice: avoid bpf_prog refcount underflow
- ocelot: fix broken PTP over IP and PTP API violations
Misc:
- marvell: mvpp2: increase MTU limit when XDP enabled"
* tag 'net-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits)
net: dsa: microchip: implement multi-bridge support
net: mscc: ocelot: correctly report the timestamping RX filters in ethtool
net: mscc: ocelot: set up traps for PTP packets
net: ptp: add a definition for the UDP port for IEEE 1588 general messages
net: mscc: ocelot: create a function that replaces an existing VCAP filter
net: mscc: ocelot: don't downgrade timestamping RX filters in SIOCSHWTSTAMP
net: hns3: fix incorrect components info of ethtool --reset command
net: hns3: fix one incorrect value of page pool info when queried by debugfs
net: hns3: add check NULL address for page pool
net: hns3: fix VF RSS failed problem after PF enable multi-TCs
net: qed: fix the array may be out of bound
net/smc: Don't call clcsock shutdown twice when smc shutdown
net: vlan: fix underflow for the real_dev refcnt
ptp: fix filter names in the documentation
ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
nfc: virtual_ncidev: change default device permissions
net/sched: sch_ets: don't peek at classes beyond 'nbands'
net: stmmac: Disable Tx queues when reconfiguring the interface
selftests: tls: test for correct proto_ops
tls: fix replacing proto_ops
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a NULL pointer dereference in the CPPC library code and a
locking issue related to printing the names of ACPI device nodes in
the device properties framework.
Specifics:
- Fix NULL pointer dereference in the CPPC library code occuring on
hybrid systems without CPPC support (Rafael Wysocki).
- Avoid attempts to acquire a semaphore with interrupts off when
printing the names of ACPI device nodes and clean up code on top of
that fix (Sakari Ailus)"
* tag 'acpi-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: CPPC: Add NULL pointer check to cppc_get_perf()
ACPI: Make acpi_node_get_parent() local
ACPI: Get acpi_device's parent from the parent field
|
|
As opposed to event messages (Sync, PdelayReq etc) which require
timestamping, general messages (Announce, FollowUp etc) do not.
In PTP they are part of different streams of data.
IEEE 1588-2008 Annex D.2 "UDP port numbers" states that the UDP
destination port assigned by IANA is 319 for event messages, and 320 for
general messages. Yet the kernel seems to be missing the definition for
general messages. This patch adds it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
VCAP (Versatile Content Aware Processor) is the TCAM-based engine behind
tc flower offload on ocelot, among other things. The ingress port mask
on which VCAP rules match is present as a bit field in the actual key of
the rule. This means that it is possible for a rule to be shared among
multiple source ports. When the rule is added one by one on each desired
port, that the ingress port mask of the key must be edited and rewritten
to hardware.
But the API in ocelot_vcap.c does not allow for this. For one thing,
ocelot_vcap_filter_add() and ocelot_vcap_filter_del() are not symmetric,
because ocelot_vcap_filter_add() works with a preallocated and
prepopulated filter and programs it to hardware, and
ocelot_vcap_filter_del() does both the job of removing the specified
filter from hardware, as well as kfreeing it. That is to say, the only
option of editing a filter in place, which is to delete it, modify the
structure and add it back, does not work because it results in
use-after-free.
This patch introduces ocelot_vcap_filter_replace, which trivially
reprograms a VCAP entry to hardware, at the exact same index at which it
existed before, without modifying any list or allocating any memory.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- Kconfig fix to make it possible to control building of the privcmd
driver
- three fixes for issues identified by the kernel test robot
- a five-patch series to simplify timeout handling for Xen PV driver
initialization
- two patches to fix error paths in xenstore/xenbus driver
initialization
* tag 'for-linus-5.16c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: make HYPERVISOR_set_debugreg() always_inline
xen: make HYPERVISOR_get_debugreg() always_inline
xen: detect uninitialized xenbus in xenbus_init
xen: flag xen_snd_front to be not essential for system boot
xen: flag pvcalls-front to be not essential for system boot
xen: flag hvc_xen to be not essential for system boot
xen: flag xen_drm_front to be not essential for system boot
xen: add "not_essential" flag to struct xenbus_driver
xen/pvh: add missing prototype to header
xen: don't continue xenstore initialization in case of errors
xen/privcmd: make option visible in Kconfig
|
|
Pull folio fixes from Matthew Wilcox:
"In the course of preparing the folio changes for iomap for next merge
window, we discovered some problems that would be nice to address now:
- Renaming multi-page folios to large folios.
mapping_multi_page_folio_support() is just a little too long, so we
settled on mapping_large_folio_support(). That meant renaming, eg
folio_test_multi() to folio_test_large().
Rename AS_THP_SUPPORT to match
- I hadn't included folio wrappers for zero_user_segments(), etc.
Also, multi-page^W^W large folio support is now independent of
CONFIG_TRANSPARENT_HUGEPAGE, so machines with HIGHMEM always need
to fall back to the out-of-line zero_user_segments().
Remove FS_THP_SUPPORT to match
- The build bots finally got round to telling me that I missed a
couple of architectures when adding flush_dcache_folio(). Christoph
suggested that we just add linux/cacheflush.h and not rely on
asm-generic/cacheflush.h"
* tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache:
mm: Add functions to zero portions of a folio
fs: Rename AS_THP_SUPPORT and mapping_thp_support
fs: Remove FS_THP_SUPPORT
mm: Remove folio_test_single
mm: Rename folio_test_multi to folio_test_large
Add linux/cacheflush.h
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v5.16
There's a large but repetitive set of fixes here for issues with the
Tegra kcontrols not correctly reporting changes to userspace, a fix for
some issues with matching on older x86 platforms introduced during the
merge window together with a set of smaller fixes and one new system
quirk.
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git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan
Stefan Schmidt says:
====================
pull-request: ieee802154 for net 2021-11-24
A fix from Alexander which has been brought up various times found by
automated checkers. Make sure values are in u32 range.
* tag 'ieee802154-for-net-2021-11-24' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan:
net: ieee802154: handle iftypes as u32
====================
Link: https://lore.kernel.org/r/20211124150934.3670248-1-stefan@datenfreihafen.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This reverts commit 939779f5152d161b34f612af29e7dc1ac4472fcf.
Attempts to validate length in the core did not work out: there turn out
to exist multiple broken devices, and in particular legacy devices are
known to be broken in this respect.
We have ideas for handling this better in the next version but for now
let's revert to a known good state to make sure drivers work for people.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- fix for Intel-ISH driver to make sure it gets aoutoloaded only on
matching devices and not universally (Thomas Weißschuh)
- fix for Wacom driver reporting invalid contact under certain
circumstances (Jason Gerecke)
- probing fix for ft260 dirver (Michael Zaidman)
- fix for generic keycode remapping (Thomas Weißschuh)
- fix for division by zero in hid-magicmouse (Claudia Pellegrino)
- other tiny assorted fixes and new device IDs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: multitouch: Fix Iiyama ProLite T1931SAW (0eef:0001 again!)
HID: nintendo: eliminate dead datastructures in !CONFIG_NINTENDO_FF case
HID: magicmouse: prevent division by 0 on scroll
HID: thrustmaster: fix sparse warnings
HID: Ignore battery for Elan touchscreen on HP Envy X360 15-eu0xxx
HID: input: set usage type to key on keycode remap
HID: input: Fix parsing of HID_CP_CONSUMER_CONTROL fields
HID: ft260: fix i2c probing for hwmon devices
Revert "HID: hid-asus.c: Maps key 0x35 (display off) to KEY_SCREENLOCK"
HID: intel-ish-hid: fix module device-id handling
mod_devicetable: fix kdocs for ishtp_device_id
HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts
HID: nintendo: unlock on error in joycon_leds_create()
platform/x86: isthp_eclite: only load for matching devices
platform/chrome: chros_ec_ishtp: only load for matching devices
HID: intel-ish-hid: hid-client: only load for matching devices
HID: intel-ish-hid: fw-loader: only load for matching devices
HID: intel-ish-hid: use constants for modaliases
HID: intel-ish-hid: add support for MODULE_DEVICE_TABLE()
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When booting the xenbus driver will wait for PV devices to have
connected to their backends before continuing. The timeout is different
between essential and non-essential devices.
Non-essential devices are identified by their nodenames directly in the
xenbus driver, which requires to update this list in case a new device
type being non-essential is added (this was missed for several types
in the past).
In order to avoid this problem, add a "not_essential" flag to struct
xenbus_driver which can be set to "true" by the respective frontend.
Set this flag for the frontends currently regarded to be not essential
(vkbs and vfb) and use it for testing in the xenbus driver.
Signed-off-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20211022064800.14978-2-jgross@suse.com
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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acpi_node_get_parent() isn't used outside drivers/acpi/property.c.
Make it local.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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We need a way to release a fib6_nh's per-cpu dsts when replacing
nexthops otherwise we can end up with stale per-cpu dsts which hold net
device references, so add a new IPv6 stub called fib6_nh_release_dsts.
It must be used after an RCU grace period, so no new dsts can be created
through a group's nexthop entry.
Similar to fib6_nh_release it shouldn't be used if fib6_nh_init has failed
so it doesn't need a dummy stub when IPv6 is not enabled.
Fixes: 7bf4796dd099 ("nexthops: add support for replace")
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using
compatible IDs") and commit 959ae8215a9e ("ASoC: Intel: soc-acpi-cht:
shrink tables using compatible IDs") simplified the match tables in
soc-acpi-intel-byt-match.c and soc-acpi-intel-cht-match.c by merging
identical entries using the new .comp_ids snd_soc_acpi_mach field to
point a single entry to multiple ACPI HIDs and clearing the previously
unique per entry .id field.
But various machine drivers from sound/soc/intel/boards rely on mach->id
in one or more ways, e.g. some drivers contain the following snippets:
adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
pkg_found = snd_soc_acpi_find_package_from_hid(mach->id, ...
if (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8)) { ...
All of which are broken by the match table shrinking.
Make the snd_soc_acpi_mach.id field non const (the storage for the tables
already is non const) and on a comps_ids match copy the matching HID to
the id field to fix this.
Fixes: dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using compatible IDs")
Fixes: 959ae8215a9e ("ASoC: Intel: soc-acpi-cht: shrink tables using compatible IDs")
Suggested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Brent Lu <brent.lu@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211118153014.349222-1-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge misc fixes from Andrew Morton:
"15 patches.
Subsystems affected by this patch series: ipc, hexagon, mm (swap,
slab-generic, kmemleak, hugetlb, kasan, damon, and highmem), and proc"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
proc/vmcore: fix clearing user buffer by properly using clear_user()
kmap_local: don't assume kmap PTEs are linear arrays in memory
mm/damon/dbgfs: fix missed use of damon_dbgfs_lock
mm/damon/dbgfs: use '__GFP_NOWARN' for user-specified size buffer allocation
kasan: test: silence intentional read overflow warnings
hugetlb, userfaultfd: fix reservation restore on userfaultfd error
hugetlb: fix hugetlb cgroup refcounting during mremap
mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag
hexagon: ignore vmlinux.lds
hexagon: clean up timer-regs.h
hexagon: export raw I/O routines for modules
mm: emit the "free" trace report before freeing memory in kmem_cache_free()
shm: extend forced shm destroy to support objects from several IPC nses
ipc: WARN if trying to remove ipc object which is absent
mm/swap.c:put_pages_list(): reinitialise the page list
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"There is an ACPI stubs fix which is ACKed by the ACPI maintainer for
merging through my tree.
One item stand out and that is that I delete the <linux/sdb.h> header
that is used by nothing. I deleted this subsystem (through the GPIO
tree) a while back so I feel responsible for tidying up the floor.
Other than that it is the usual mistakes, a bit noisy around build
issue and Kconfig then driver fixes.
Specifics:
- Fix some stubs causing compile issues for ACPI.
- Fix some wakeups on AMD IRQs shared between GPIO and SCI.
- Fix a build warning in the Tegra driver.
- Fix a Kconfig issue in the Qualcomm driver.
- Add a missing include the RALink driver.
- Return a valid type for the Apple pinctrl IRQs.
- Implement some Qualcomm SDM845 dual-edge errata.
- Remove the unused <linux/sdb.h> header. (The subsystem was once
deleted by the pinctrl maintainer...)
- Fix a duplicate initialized in the Tegra driver.
- Fix register offsets for UFS and SDC in the Qualcomm SM8350 driver"
* tag 'pinctrl-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: qcom: sm8350: Correct UFS and SDC offsets
pinctrl: tegra194: remove duplicate initializer again
Remove unused header <linux/sdb.h>
pinctrl: qcom: sdm845: Enable dual edge errata
pinctrl: apple: Always return valid type in apple_gpio_irq_type
pinctrl: ralink: include 'ralink_regs.h' in 'pinctrl-mt7620.c'
pinctrl: qcom: fix unmet dependencies on GPIOLIB for GPIOLIB_IRQCHIP
pinctrl: tegra: Return const pointer from tegra_pinctrl_get_group()
pinctrl: amd: Fix wakeups when IRQ is shared with SCI
ACPI: Add stubs for wakeup handler functions
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When hugetlb_vm_op_open() is called during copy_vma(), we may take the
reference to resv_map->css. Later, when clearing the reservation
pointer of old_vma after transferring it to new_vma, we forget to drop
the reference to resv_map->css. This leads to a reference leak of css.
Fixes this by adding a check to drop reservation css reference in
clear_vma_resv_huge_pages()
Link: https://lkml.kernel.org/r/20211113154412.91134-1-minhquangbui99@gmail.com
Fixes: 550a7d60bd5e35 ("mm, hugepages: add mremap() support for hugepage backed vma")
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently, the exit_shm() function not designed to work properly when
task->sysvshm.shm_clist holds shm objects from different IPC namespaces.
This is a real pain when sysctl kernel.shm_rmid_forced = 1, because it
leads to use-after-free (reproducer exists).
This is an attempt to fix the problem by extending exit_shm mechanism to
handle shm's destroy from several IPC ns'es.
To achieve that we do several things:
1. add a namespace (non-refcounted) pointer to the struct shmid_kernel
2. during new shm object creation (newseg()/shmget syscall) we
initialize this pointer by current task IPC ns
3. exit_shm() fully reworked such that it traverses over all shp's in
task->sysvshm.shm_clist and gets IPC namespace not from current task
as it was before but from shp's object itself, then call
shm_destroy(shp, ns).
Note: We need to be really careful here, because as it was said before
(1), our pointer to IPC ns non-refcnt'ed. To be on the safe side we
using special helper get_ipc_ns_not_zero() which allows to get IPC ns
refcounter only if IPC ns not in the "state of destruction".
Q/A
Q: Why can we access shp->ns memory using non-refcounted pointer?
A: Because shp object lifetime is always shorther than IPC namespace
lifetime, so, if we get shp object from the task->sysvshm.shm_clist
while holding task_lock(task) nobody can steal our namespace.
Q: Does this patch change semantics of unshare/setns/clone syscalls?
A: No. It's just fixes non-covered case when process may leave IPC
namespace without getting task->sysvshm.shm_clist list cleaned up.
Link: https://lkml.kernel.org/r/67bb03e5-f79c-1815-e2bf-949c67047418@colorfullife.com
Link: https://lkml.kernel.org/r/20211109151501.4921-1-manfred@colorfullife.com
Fixes: ab602f79915 ("shm: make exit_shm work proportional to task activity")
Co-developed-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Alexander Mikhalitsyn <alexander.mikhalitsyn@virtuozzo.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Andrei Vagin <avagin@gmail.com>
Cc: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Cc: Vasily Averin <vvs@virtuozzo.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull exit-vs-signal handling fixes from Eric Biederman:
"This is a small set of changes where debuggers were no longer able to
intercept synchronous SIGTRAP and SIGSEGV, introduced by the exit
cleanups.
This is essentially the change you suggested with all of i's dotted
and the t's crossed so that ptrace can intercept all of the cases it
has been able to intercept the past, and all of the cases that made it
to exit without giving ptrace a chance still don't give ptrace a
chance"
* 'SA_IMMUTABLE-fixes-for-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
signal: Replace force_fatal_sig with force_exit_sig when in doubt
signal: Don't always set SA_IMMUTABLE for forced signals
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Pull rdma fixes from Jason Gunthorpe:
"There are a few big regression items from the merge window suggesting
that people are testing rc1's but not testing the for-next branches:
- Warnings fixes
- Crash in hf1 when creating QPs and setting counters
- Some old mlx4 cards fail to probe due to missing counters
- Syzkaller crash in the new counters code"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
MAINTAINERS: Update for VMware PVRDMA driver
RDMA/nldev: Check stat attribute before accessing it
RDMA/mlx4: Do not fail the registration on port stats
IB/hfi1: Properly allocate rdma counter desc memory
RDMA/core: Set send and receive CQ before forwarding to the driver
RDMA/netlink: Add __maybe_unused to static inline in C file
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Recently to prevent issues with SECCOMP_RET_KILL and similar signals
being changed before they are delivered SA_IMMUTABLE was added.
Unfortunately this broke debuggers[1][2] which reasonably expect
to be able to trap synchronous SIGTRAP and SIGSEGV even when
the target process is not configured to handle those signals.
Add force_exit_sig and use it instead of force_fatal_sig where
historically the code has directly called do_exit. This has the
implementation benefits of going through the signal exit path
(including generating core dumps) without the danger of allowing
userspace to ignore or change these signals.
This avoids userspace regressions as older kernels exited with do_exit
which debuggers also can not intercept.
In the future is should be possible to improve the quality of
implementation of the kernel by changing some of these force_exit_sig
calls to force_fatal_sig. That can be done where it matters on
a case-by-case basis with careful analysis.
Reported-by: Kyle Huey <me@kylehuey.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
[1] https://lkml.kernel.org/r/CAP045AoMY4xf8aC_4QU_-j7obuEPYgTcnQQP3Yxk=2X90jtpjw@mail.gmail.com
[2] https://lkml.kernel.org/r/20211117150258.GB5403@xsang-OptiPlex-9020
Fixes: 00b06da29cf9 ("signal: Add SA_IMMUTABLE to ensure forced siganls do not get changed")
Fixes: a3616a3c0272 ("signal/m68k: Use force_sigsegv(SIGSEGV) in fpsp040_die")
Fixes: 83a1f27ad773 ("signal/powerpc: On swapcontext failure force SIGSEGV")
Fixes: 9bc508cf0791 ("signal/s390: Use force_sigsegv in default_trap_handler")
Fixes: 086ec444f866 ("signal/sparc32: In setup_rt_frame and setup_fram use force_fatal_sig")
Fixes: c317d306d550 ("signal/sparc32: Exit with a fatal signal when try_to_clear_window_buffer fails")
Fixes: 695dd0d634df ("signal/x86: In emulate_vsyscall force a signal instead of calling do_exit")
Fixes: 1fbd60df8a85 ("signal/vm86_32: Properly send SIGSEGV when the vm86 state cannot be saved.")
Fixes: 941edc5bf174 ("exit/syscall_user_dispatch: Send ordinary signals on failure")
Link: https://lkml.kernel.org/r/871r3dqfv8.fsf_-_@email.froward.int.ebiederm.org
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: Kyle Huey <khuey@kylehuey.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bpf, mac80211.
Current release - regressions:
- devlink: don't throw an error if flash notification sent before
devlink visible
- page_pool: Revert "page_pool: disable dma mapping support...",
turns out there are active arches who need it
Current release - new code bugs:
- amt: cancel delayed_work synchronously in amt_fini()
Previous releases - regressions:
- xsk: fix crash on double free in buffer pool
- bpf: fix inner map state pruning regression causing program
rejections
- mac80211: drop check for DONT_REORDER in __ieee80211_select_queue,
preventing mis-selecting the best effort queue
- mac80211: do not access the IV when it was stripped
- mac80211: fix radiotap header generation, off-by-one
- nl80211: fix getting radio statistics in survey dump
- e100: fix device suspend/resume
Previous releases - always broken:
- tcp: fix uninitialized access in skb frags array for Rx 0cp
- bpf: fix toctou on read-only map's constant scalar tracking
- bpf: forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing
progs
- tipc: only accept encrypted MSG_CRYPTO msgs
- smc: transfer remaining wait queue entries during fallback, fix
missing wake ups
- udp: validate checksum in udp_read_sock() (when sockmap is used)
- sched: act_mirred: drop dst for the direction from egress to
ingress
- virtio_net_hdr_to_skb: count transport header in UFO, prevent
allowing bad skbs into the stack
- nfc: reorder the logic in nfc_{un,}register_device, fix unregister
- ipsec: check return value of ipv6_skip_exthdr
- usb: r8152: add MAC passthrough support for more Lenovo Docks"
* tag 'net-5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (96 commits)
ptp: ocp: Fix a couple NULL vs IS_ERR() checks
net: ethernet: dec: tulip: de4x5: fix possible array overflows in type3_infoblock()
net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound
ipv6: check return value of ipv6_skip_exthdr
e100: fix device suspend/resume
devlink: Don't throw an error if flash notification sent before devlink visible
page_pool: Revert "page_pool: disable dma mapping support..."
ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
octeontx2-af: debugfs: don't corrupt user memory
NFC: add NCI_UNREG flag to eliminate the race
NFC: reorder the logic in nfc_{un,}register_device
NFC: reorganize the functions in nci_request
tipc: check for null after calling kmemdup
i40e: Fix display error code in dmesg
i40e: Fix creation of first queue by omitting it if is not power of two
i40e: Fix warning message and call stack during rmmod i40e driver
i40e: Fix ping is lost after configuring ADq on VF
i40e: Fix changing previously set num_queue_pairs for PFs
i40e: Fix NULL ptr dereference on VSI filter sync
i40e: Fix correct max_pkt_size on VF RX queue
...
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These functions are wrappers around zero_user_segments(), which means
that zero_user_segments() can now be called for compound pages even when
CONFIG_TRANSPARENT_HUGEPAGE is disabled.
Use 'xend' as the name of the parameter to indicate that this is an
excluded end, not the more usual included end. Excluding the end makes
more sense to the callers, but can cause confusion to readers who are
more used to seeing included ends.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
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Pull KVM fixes from Paolo Bonzini:
"Selftest changes:
- Cleanups for the perf test infrastructure and mapping hugepages
- Avoid contention on mmap_sem when the guests start to run
- Add event channel upcall support to xen_shinfo_test
x86 changes:
- Fixes for Xen emulation
- Kill kvm_map_gfn() / kvm_unmap_gfn() and broken gfn_to_pfn_cache
- Fixes for migration of 32-bit nested guests on 64-bit hypervisor
- Compilation fixes
- More SEV cleanups
Generic:
- Cap the return value of KVM_CAP_NR_VCPUS to both KVM_CAP_MAX_VCPUS
and num_online_cpus(). Most architectures were only using one of
the two"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits)
KVM: x86: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: s390: Cap KVM_CAP_NR_VCPUS by num_online_cpus()
KVM: RISC-V: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: PPC: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: arm64: Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus()
KVM: x86: Assume a 64-bit hypercall for guests with protected state
selftests: KVM: Add /x86_64/sev_migrate_tests to .gitignore
riscv: kvm: fix non-kernel-doc comment block
KVM: SEV: Fix typo in and tweak name of cmd_allowed_from_miror()
KVM: SEV: Drop a redundant setting of sev->asid during initialization
KVM: SEV: WARN if SEV-ES is marked active but SEV is not
KVM: SEV: Set sev_info.active after initial checks in sev_guest_init()
KVM: SEV: Disallow COPY_ENC_CONTEXT_FROM if target has created vCPUs
KVM: Kill kvm_map_gfn() / kvm_unmap_gfn() and gfn_to_pfn_cache
KVM: nVMX: Use a gfn_to_hva_cache for vmptrld
KVM: nVMX: Use kvm_read_guest_offset_cached() for nested VMCS check
KVM: x86/xen: Use sizeof_field() instead of open-coding it
KVM: nVMX: Use kvm_{read,write}_guest_cached() for shadow_vmcs12
KVM: x86/xen: Fix get_attr of KVM_XEN_ATTR_TYPE_SHARED_INFO
...
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git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk fixes from Petr Mladek:
- Try to flush backtraces from other CPUs also on the local one. This
was a regression caused by printk_safe buffers removal.
- Remove header dependency warning.
* tag 'printk-for-5.16-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: Remove printk.h inclusion in percpu.h
printk: restore flushing of NMI buffers on remote CPUs after NMI backtraces
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This reverts commit d00e60ee54b12de945b8493cf18c1ada9e422514.
As reported by Guillaume in [1]:
Enabling LPAE always enables CONFIG_ARCH_DMA_ADDR_T_64BIT
in 32-bit systems, which breaks the bootup proceess when a
ethernet driver is using page pool with PP_FLAG_DMA_MAP flag.
As we were hoping we had no active consumers for such system
when we removed the dma mapping support, and LPAE seems like
a common feature for 32 bits system, so revert it.
1. https://www.spinics.net/lists/netdev/msg779890.html
Fixes: d00e60ee54b1 ("page_pool: disable dma mapping support for 32-bit arch with 64-bit DMA")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Tested-by: "kernelci.org bot" <bot@kernelci.org>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* Fixes for Xen emulation
* Kill kvm_map_gfn() / kvm_unmap_gfn() and broken gfn_to_pfn_cache
* Fixes for migration of 32-bit nested guests on 64-bit hypervisor
* Compilation fixes
* More SEV cleanups
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