BMC/Intel-BMC/linux.git/include/linux, branch dev-5.10-intel

Merge branch 'dev-5.10' into dev-5.10-intel

2021-10-01T18:40:21+00:00

Pull 5.10.67 stable from OpenBMC upstream. Signed-off-by: Jae Hyun Yoo

Merge tag 'v5.10.67' into dev-5.10

2021-09-20T04:04:02+00:00

This is the 5.10.67 stable release Signed-off-by: Joel Stanley

mm/hugetlb: initialize hugetlb_usage in mm_init

2021-09-18T11:40:36+00:00

commit 13db8c50477d83ad3e3b9b0ae247e5cd833a7ae4 upstream. After fork, the child process will get incorrect (2x) hugetlb_usage. If a process uses 5 2MB hugetlb pages in an anonymous mapping, HugetlbPages: 10240 kB and then forks, the child will show, HugetlbPages: 20480 kB The reason for double the amount is because hugetlb_usage will be copied from the parent and then increased when we copy page tables from parent to child. Child will have 2x actual usage. Fix this by adding hugetlb_count_init in mm_init. Link: https://lkml.kernel.org/r/20210826071742.877-1-liuzixian4@huawei.com Fixes: 5d317b2b6536 ("mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status") Signed-off-by: Liu Zixian Reviewed-by: Naoya Horiguchi Reviewed-by: Mike Kravetz Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

hugetlb: fix hugetlb cgroup refcounting during vma split

2021-09-18T11:40:36+00:00

commit 09a26e832705fdb7a9484495b71a05e0bbc65207 upstream. Guillaume Morin reported hitting the following WARNING followed by GPF or NULL pointer deference either in cgroups_destroy or in the kill_css path.: percpu ref (css_release) <= 0 (-1) after switching to atomic WARNING: CPU: 23 PID: 130 at lib/percpu-refcount.c:196 percpu_ref_switch_to_atomic_rcu+0x127/0x130 CPU: 23 PID: 130 Comm: ksoftirqd/23 Kdump: loaded Tainted: G O 5.10.60 #1 RIP: 0010:percpu_ref_switch_to_atomic_rcu+0x127/0x130 Call Trace: rcu_core+0x30f/0x530 rcu_core_si+0xe/0x10 __do_softirq+0x103/0x2a2 run_ksoftirqd+0x2b/0x40 smpboot_thread_fn+0x11a/0x170 kthread+0x10a/0x140 ret_from_fork+0x22/0x30 Upon further examination, it was discovered that the css structure was associated with hugetlb reservations. For private hugetlb mappings the vma points to a reserve map that contains a pointer to the css. At mmap time, reservations are set up and a reference to the css is taken. This reference is dropped in the vma close operation; hugetlb_vm_op_close. However, if a vma is split no additional reference to the css is taken yet hugetlb_vm_op_close will be called twice for the split vma resulting in an underflow. Fix by taking another reference in hugetlb_vm_op_open. Note that the reference is only taken for the owner of the reserve map. In the more common fork case, the pointer to the reserve map is cleared for non-owning vmas. Link: https://lkml.kernel.org/r/20210830215015.155224-1-mike.kravetz@oracle.com Fixes: e9fe92ae0cd2 ("hugetlb_cgroup: add reservation accounting for private mappings") Signed-off-by: Mike Kravetz Reported-by: Guillaume Morin Suggested-by: Guillaume Morin Tested-by: Guillaume Morin Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

ethtool: improve compat ioctl handling

2021-09-18T11:40:21+00:00

[ Upstream commit dd98d2895de6485c884a9cb42de69fed02826fa4 ] The ethtool compat ioctl handling is hidden away in net/socket.c, which introduces a couple of minor oddities: - The implementation may end up diverging, as seen in the RXNFC extension in commit 84a1d9c48200 ("net: ethtool: extend RXNFC API to support RSS spreading of filter matches") that does not work in compat mode. - Most architectures do not need the compat handling at all because u64 and compat_u64 have the same alignment. - On x86, the conversion is done for both x32 and i386 user space, but it's actually wrong to do it for x32 and cannot work there. - On 32-bit Arm, it never worked for compat oabi user space, since that needs to do the same conversion but does not. - It would be nice to get rid of both compat_alloc_user_space() and copy_in_user() throughout the kernel. None of these actually seems to be a serious problem that real users are likely to encounter, but fixing all of them actually leads to code that is both shorter and more readable. Signed-off-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

rcu: Fix macro name CONFIG_TASKS_RCU_TRACE

2021-09-18T11:40:19+00:00

[ Upstream commit fed31a4dd3adb5455df7c704de2abb639a1dc1c0 ] This commit fixes several typos where CONFIG_TASKS_RCU_TRACE should instead be CONFIG_TASKS_TRACE_RCU. Among other things, these typos could cause CONFIG_TASKS_TRACE_RCU_READ_MB=y kernels to suffer from memory-ordering bugs that could result in false-positive quiescent states and too-short grace periods. Signed-off-by: Zhouyi Zhou Signed-off-by: Paul E. McKenney Signed-off-by: Sasha Levin

iommu/vt-d: Update the virtual command related registers

2021-09-18T11:40:14+00:00

[ Upstream commit 4d99efb229e63928c6b03a756a2e38cd4777fbe8 ] The VT-d spec Revision 3.3 updated the virtual command registers, virtual command opcode B register, virtual command response register and virtual command capability register (Section 10.4.43, 10.4.44, 10.4.45, 10.4.46). This updates the virtual command interface implementation in the Intel IOMMU driver accordingly. Fixes: 24f27d32ab6b7 ("iommu/vt-d: Enlightened PASID allocation") Signed-off-by: Lu Baolu Cc: Ashok Raj Cc: Sanjay Kumar Cc: Kevin Tian Link: https://lore.kernel.org/r/20210713042649.3547403-1-baolu.lu@linux.intel.com Link: https://lore.kernel.org/r/20210818134852.1847070-2-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin

SUNRPC query transport's source port

2021-09-18T11:40:13+00:00

[ Upstream commit a8482488a7d6d320f63a9ee1912dbb5ae5b80a61 ] Provide ability to query transport's source port. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin

SUNRPC: Fix potential memory corruption

2021-09-18T11:40:13+00:00

[ Upstream commit c2dc3e5fad13aca5d7bdf4bcb52b1a1d707c8555 ] We really should not call rpc_wake_up_queued_task_set_status() with xprt->snd_task as an argument unless we are certain that is actually an rpc_task. Fixes: 0445f92c5d53 ("SUNRPC: Fix disconnection races") Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker Signed-off-by: Sasha Levin

Revert "time: Handle negative seconds correctly in timespec64_to_ns()"

2021-09-16T10:51:23+00:00

This reverts commit 656f343d724b45295f73000eb6e7bd3d212af116 which is commit 39ff83f2f6cc5cc1458dfcea9697f96338210beb upstream. Arnd reports that this needs more review before being merged into all of the trees. Link: https://lore.kernel.org/r/CAK8P3a0z5jE=Z3Ps5bFTCFT7CHZR1JQ8VhdntDJAfsUxSPCcEw@mail.gmail.com Reported-by: Arnd Bergmann Cc: Lukas Hannen Cc: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman