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2021-11-18samples/kretprobes: Fix return value if register_kretprobe() failedTiezhu Yang1-1/+1
[ Upstream commit f76fbbbb5061fe14824ba5807c44bd7400a6b4e1 ] Use the actual return value instead of always -1 if register_kretprobe() failed. E.g. without this patch: # insmod samples/kprobes/kretprobe_example.ko func=no_such_func insmod: ERROR: could not insert module samples/kprobes/kretprobe_example.ko: Operation not permitted With this patch: # insmod samples/kprobes/kretprobe_example.ko func=no_such_func insmod: ERROR: could not insert module samples/kprobes/kretprobe_example.ko: Unknown symbol in module Link: https://lkml.kernel.org/r/1635213091-24387-2-git-send-email-yangtiezhu@loongson.cn Fixes: 804defea1c02 ("Kprobes: move kprobe examples to samples/") Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-18samples: bpf: Fix tracex7 error raised on the missing argumentJuhee Kang2-0/+6
[ Upstream commit 7d07006f05922b95518be403f08ef8437b67aa32 ] The current behavior of 'tracex7' doesn't consist with other bpf samples tracex{1..6}. Other samples do not require any argument to run with, but tracex7 should be run with btrfs device argument. (it should be executed with test_override_return.sh) Currently, tracex7 doesn't have any description about how to run this program and raises an unexpected error. And this result might be confusing since users might not have a hunch about how to run this program. // Current behavior # ./tracex7 sh: 1: Syntax error: word unexpected (expecting ")") // Fixed behavior # ./tracex7 ERROR: Run with the btrfs device argument! In order to fix this error, this commit adds logic to report a message and exit when running this program with a missing argument. Additionally in test_override_return.sh, there is a problem with multiple directory(tmpmnt) creation. So in this commit adds a line with removing the directory with every execution. Signed-off-by: Juhee Kang <claudiajkang@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210727041056.23455-1-claudiajkang@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-15samples: pktgen: add missing IPv6 option to pktgen scriptsJuhee Kang2-10/+14
[ Upstream commit 0f0c4f1b72e090b23131700bb155944cc28b2a7b ] Currently, "sample04" and "sample05" are not working properly when running with an IPv6 option("-6"). The commit 0f06a6787e05 ("samples: Add an IPv6 "-6" option to the pktgen scripts") has omitted the addition of this option at "sample04" and "sample05". In order to support IPv6 option, this commit adds logic related to IPv6 option. Fixes: 0f06a6787e05 ("samples: Add an IPv6 "-6" option to the pktgen scripts") Signed-off-by: Juhee Kang <claudiajkang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-15bpf, samples: Add missing mprog-disable to xdp_redirect_cpu's optstringMatthew Cover1-1/+1
[ Upstream commit 34ad6d9d8c27293e1895b448af7d6cf5d351ad8d ] Commit ce4dade7f12a ("samples/bpf: xdp_redirect_cpu: Load a eBPF program on cpumap") added the following option, but missed adding it to optstring: - mprog-disable: disable loading XDP program on cpumap entries Fix it and add the missing option character. Fixes: ce4dade7f12a ("samples/bpf: xdp_redirect_cpu: Load a eBPF program on cpumap") Signed-off-by: Matthew Cover <matthew.cover@stackpath.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210731005632.13228-1-matthew.cover@stackpath.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14samples/bpf: Fix the error return code of xdp_redirect's main()Wang Hai1-1/+1
[ Upstream commit 7c6090ee2a7b3315410cfc83a94c3eb057407b25 ] Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. If bpf_map_update_elem() failed, main() should return a negative error. Fixes: 832622e6bd18 ("xdp: sample program for new bpf_redirect helper") Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210616042534.315097-1-wanghai38@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14samples/bpf: Fix Segmentation fault for xdp_redirect commandWang Hai1-1/+1
[ Upstream commit 85102ba58b4125ebad941d7555c3c248b23efd16 ] A Segmentation fault error is caused when the following command is executed. $ sudo ./samples/bpf/xdp_redirect lo Segmentation fault This command is missing a device <IFNAME|IFINDEX> as an argument, resulting in out-of-bounds access from argv. If the number of devices for the xdp_redirect parameter is not 2, we should report an error and exit. Fixes: 24251c264798 ("samples/bpf: add option for native and skb mode for redirect apps") Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210616042324.314832-1-wanghai38@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-06-10samples: vfio-mdev: fix error handing in mdpy_fb_probe()Wei Yongjun1-4/+9
[ Upstream commit 752774ce7793a1f8baa55aae31f3b4caac49cbe4 ] Fix to return a negative error code from the framebuffer_alloc() error handling case instead of 0, also release regions in some error handing cases. Fixes: cacade1946a4 ("sample: vfio mdev display - guest driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Message-Id: <20210520133641.1421378-1-weiyongjun1@huawei.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-06-03samples/bpf: Consider frame size in tx_only of xdpsock sampleMagnus Karlsson1-1/+1
commit 3b80d106e110d39d3f678954d3b55078669cf07e upstream. Fix the tx_only micro-benchmark in xdpsock to take frame size into consideration. It was hardcoded to the default value of frame_size which is 4K. Changing this on the command line to 2K made half of the packets illegal as they were outside the umem and were therefore discarded by the kernel. Fixes: 46738f73ea4f ("samples/bpf: add use of need_wakeup flag in xdpsock") Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/bpf/20210506124349.6666-1-magnus.karlsson@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-19samples/bpf: Fix broken tracex1 due to kprobe argument changeYaqi Chen1-2/+2
[ Upstream commit 137733d08f4ab14a354dacaa9a8fc35217747605 ] >From commit c0bbbdc32feb ("__netif_receive_skb_core: pass skb by reference"), the first argument passed into __netif_receive_skb_core has changed to reference of a skb pointer. This commit fixes by using bpf_probe_read_kernel. Signed-off-by: Yaqi Chen <chendotjs@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210416154803.37157-1-chendotjs@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-14kfifo: fix ternary sign extension bugsDan Carpenter3-6/+18
[ Upstream commit 926ee00ea24320052b46745ef4b00d91c05bd03d ] The intent with this code was to return negative error codes but instead it returns positives. The problem is how type promotion works with ternary operations. These functions return long, "ret" is an int and "copied" is a u32. The negative error code is first cast to u32 so it becomes a high positive and then cast to long where it's still a positive. We could fix this by declaring "ret" as a ssize_t but let's just get rid of the ternaries instead. Link: https://lkml.kernel.org/r/YIE+/cK1tBzSuQPU@mwanda Fixes: 5bf2b19320ec ("kfifo: add example files to the kernel sample directory") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-17samples, bpf: Add missing munmap in xdpsockMaciej Fijalkowski1-0/+2
commit 6bc6699881012b5bd5d49fa861a69a37fc01b49c upstream. We mmap the umem region, but we never munmap it. Add the missing call at the end of the cleanup. Fixes: 3945b37a975d ("samples/bpf: use hugepages in xdpsock app") Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Björn Töpel <bjorn.topel@intel.com> Link: https://lore.kernel.org/bpf/20210303185636.18070-3-maciej.fijalkowski@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-04watch_queue: Drop references to /dev/watch_queueGabriel Krisman Bertazi2-2/+2
[ Upstream commit 8fe62e0c0e2efa5437f3ee81b65d69e70a45ecd2 ] The merged API doesn't use a watch_queue device, but instead relies on pipes, so let the documentation reflect that. Fixes: f7e47677e39a ("watch_queue: Add a key/keyring notification facility") Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Jarkko Sakkinen <jarkko@kernel.org> Reviewed-by: Ben Boeckel <mathstuf@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30samples/bpf: Fix possible hang in xdpsock with multiple threadsMagnus Karlsson1-0/+2
[ Upstream commit 092fde0f863b72b67c4d6dc03844f5658fc00a35 ] Fix a possible hang in xdpsock that can occur when using multiple threads. In this case, one or more of the threads might get stuck in the while-loop in tx_only after the user has signaled the main thread to stop execution. In this case, no more Tx packets will be sent, so a thread might get stuck in the aforementioned while-loop. Fix this by introducing a test inside the while-loop to check if the benchmark has been terminated. If so, return from the function. Fixes: cd9e72b6f210 ("samples/bpf: xdpsock: Add option to specify batch size") Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20201210163407.22066-1-magnus.karlsson@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30samples: bpf: Fix lwt_len_hist reusing previous BPF mapDaniel T. Lee2-0/+2
[ Upstream commit 0afe0a998c40085a6342e1aeb4c510cccba46caf ] Currently, lwt_len_hist's map lwt_len_hist_map is uses pinning, and the map isn't cleared on test end. This leds to reuse of that map for each test, which prevents the results of the test from being accurate. This commit fixes the problem by removing of pinned map from bpffs. Also, this commit add the executable permission to shell script files. Fixes: f74599f7c5309 ("bpf: Add tests and samples for LWT-BPF") Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201124090310.24374-7-danieltimlee@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-02Merge tag 'trace-v5.10-rc6' of ↵Linus Torvalds3-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: - Use correct timestamp variable for ring buffer write stamp update - Fix up before stamp and write stamp when crossing ring buffer sub buffers - Keep a zero delta in ring buffer in slow path if cmpxchg fails - Fix trace_printk static buffer for archs that care - Fix ftrace record accounting for ftrace ops with trampolines - Fix DYNAMIC_FTRACE_WITH_DIRECT_CALLS dependency - Remove WARN_ON in hwlat tracer that triggers on something that is OK - Make "my_tramp" trampoline in ftrace direct sample code global - Fixes in the bootconfig tool for better alignment management * tag 'trace-v5.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ring-buffer: Always check to put back before stamp when crossing pages ftrace: Fix DYNAMIC_FTRACE_WITH_DIRECT_CALLS dependency ftrace: Fix updating FTRACE_FL_TRAMP tracing: Fix alignment of static buffer tracing: Remove WARN_ON in start_thread() samples/ftrace: Mark my_tramp[12]? global ring-buffer: Set the right timestamp in the slow path of __rb_reserve_next() ring-buffer: Update write stamp with the correct ts docs: bootconfig: Update file format on initrd image tools/bootconfig: Align the bootconfig applied initrd image size to 4 tools/bootconfig: Fix to check the write failure correctly tools/bootconfig: Fix errno reference after printf()
2020-12-01samples/ftrace: Mark my_tramp[12]? globalSami Tolvanen3-0/+4
my_tramp[12]? are declared as global functions in C, but they are not marked global in the inline assembly definition. This mismatch confuses Clang's Control-Flow Integrity checking. Fix the definitions by adding .globl. Link: https://lkml.kernel.org/r/20201113183414.1446671-1-samitolvanen@google.com Fixes: 9d907f1ae80b8 ("ftrace/samples: Add a sample module that implements modify_ftrace_direct()") Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-11-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfJakub Kicinski5-5/+5
Alexei Starovoitov says: ==================== pull-request: bpf 2020-11-06 1) Pre-allocated per-cpu hashmap needs to zero-fill reused element, from David. 2) Tighten bpf_lsm function check, from KP. 3) Fix bpftool attaching to flow dissector, from Lorenz. 4) Use -fno-gcse for the whole kernel/bpf/core.c instead of function attribute, from Ard. * git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: bpf: Update verification logic for LSM programs bpf: Zero-fill re-used per-cpu map element bpf: BPF_PRELOAD depends on BPF_SYSCALL tools/bpftool: Fix attaching flow dissector libbpf: Fix possible use after free in xsk_socket__delete libbpf: Fix null dereference in xsk_socket__delete libbpf, hashmap: Fix undefined behavior in hash_bits bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE tools, bpftool: Remove two unused variables. tools, bpftool: Avoid array index warnings. xsk: Fix possible memory leak at socket close bpf: Add struct bpf_redir_neigh forward declaration to BPF helper defs samples/bpf: Set rlimit for memlock to infinity in all samples bpf: Fix -Wshadow warnings selftest/bpf: Fix profiler test using CO-RE relocation for enums ==================== Link: https://lore.kernel.org/r/20201106221759.24143-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-28misc: mic: remove the MIC driversSudeep Dutt7-2376/+0
This patch removes the MIC drivers from the kernel tree since the corresponding devices have been discontinued. Removing the dma and char-misc changes in one patch and merging via the char-misc tree is best to avoid any potential build breakage. Cc: Nikhil Rao <nikhil.rao@intel.com> Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Reviewed-by: Sherry Sun <sherry.sun@nxp.com> Link: https://lore.kernel.org/r/8c1443136563de34699d2c084df478181c205db4.1603854416.git.sudeep.dutt@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-28samples/bpf: Set rlimit for memlock to infinity in all samplesToke Høiland-Jørgensen5-5/+5
The memlock rlimit is a notorious source of failure for BPF programs. Most of the samples just set it to infinity, but a few used a lower limit. The problem with unconditionally setting a lower limit is that this will also override the limit if the system-wide setting is *higher* than the limit being set, which can lead to failures on systems that lock a lot of memory, but set 'ulimit -l' to unlimited before running a sample. One fix for this is to only conditionally set the limit if the current limit is lower, but it is simpler to just unify all the samples and have them all set the limit to infinity. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Link: https://lore.kernel.org/bpf/20201026233623.91728-1-toke@redhat.com
2020-10-22bpf, libbpf: Guard bpf inline asm from bpf_tail_call_staticDaniel Borkmann1-4/+4
Yaniv reported a compilation error after pulling latest libbpf: [...] ../libbpf/src/root/usr/include/bpf/bpf_helpers.h:99:10: error: unknown register name 'r0' in asm : "r0", "r1", "r2", "r3", "r4", "r5"); [...] The issue got triggered given Yaniv was compiling tracing programs with native target (e.g. x86) instead of BPF target, hence no BTF generated vmlinux.h nor CO-RE used, and later llc with -march=bpf was invoked to compile from LLVM IR to BPF object file. Given that clang was expecting x86 inline asm and not BPF one the error complained that these regs don't exist on the former. Guard bpf_tail_call_static() with defined(__bpf__) where BPF inline asm is valid to use. BPF tracing programs on more modern kernels use BPF target anyway and thus the bpf_tail_call_static() function will be available for them. BPF inline asm is supported since clang 7 (clang <= 6 otherwise throws same above error), and __bpf_unreachable() since clang 8, therefore include the latter condition in order to prevent compilation errors for older clang versions. Given even an old Ubuntu 18.04 LTS has official LLVM packages all the way up to llvm-10, I did not bother to special case the __bpf_unreachable() inside bpf_tail_call_static() further. Also, undo the sockex3_kern's use of bpf_tail_call_static() sample given they still have the old hacky way to even compile networking progs with native instead of BPF target so bpf_tail_call_static() won't be defined there anymore. Fixes: 0e9f6841f664 ("bpf, libbpf: Add bpf_tail_call_static helper for bpf programs") Reported-by: Yaniv Agman <yanivagman@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Tested-by: Yaniv Agman <yanivagman@gmail.com> Link: https://lore.kernel.org/bpf/CAMy7=ZUk08w5Gc2Z-EKi4JFtuUCaZYmE4yzhJjrExXpYKR4L8w@mail.gmail.com Link: https://lore.kernel.org/bpf/20201021203257.26223-1-daniel@iogearbox.net
2020-10-16Merge tag 'net-next-5.10' of ↵Linus Torvalds33-476/+2148
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: - Add redirect_neigh() BPF packet redirect helper, allowing to limit stack traversal in common container configs and improving TCP back-pressure. Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain. - Expand netlink policy support and improve policy export to user space. (Ge)netlink core performs request validation according to declared policies. Expand the expressiveness of those policies (min/max length and bitmasks). Allow dumping policies for particular commands. This is used for feature discovery by user space (instead of kernel version parsing or trial and error). - Support IGMPv3/MLDv2 multicast listener discovery protocols in bridge. - Allow more than 255 IPv4 multicast interfaces. - Add support for Type of Service (ToS) reflection in SYN/SYN-ACK packets of TCPv6. - In Multi-patch TCP (MPTCP) support concurrent transmission of data on multiple subflows in a load balancing scenario. Enhance advertising addresses via the RM_ADDR/ADD_ADDR options. - Support SMC-Dv2 version of SMC, which enables multi-subnet deployments. - Allow more calls to same peer in RxRPC. - Support two new Controller Area Network (CAN) protocols - CAN-FD and ISO 15765-2:2016. - Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit kernel problem. - Add TC actions for implementing MPLS L2 VPNs. - Improve nexthop code - e.g. handle various corner cases when nexthop objects are removed from groups better, skip unnecessary notifications and make it easier to offload nexthops into HW by converting to a blocking notifier. - Support adding and consuming TCP header options by BPF programs, opening the doors for easy experimental and deployment-specific TCP option use. - Reorganize TCP congestion control (CC) initialization to simplify life of TCP CC implemented in BPF. - Add support for shipping BPF programs with the kernel and loading them early on boot via the User Mode Driver mechanism, hence reusing all the user space infra we have. - Support sleepable BPF programs, initially targeting LSM and tracing. - Add bpf_d_path() helper for returning full path for given 'struct path'. - Make bpf_tail_call compatible with bpf-to-bpf calls. - Allow BPF programs to call map_update_elem on sockmaps. - Add BPF Type Format (BTF) support for type and enum discovery, as well as support for using BTF within the kernel itself (current use is for pretty printing structures). - Support listing and getting information about bpf_links via the bpf syscall. - Enhance kernel interfaces around NIC firmware update. Allow specifying overwrite mask to control if settings etc. are reset during update; report expected max time operation may take to users; support firmware activation without machine reboot incl. limits of how much impact reset may have (e.g. dropping link or not). - Extend ethtool configuration interface to report IEEE-standard counters, to limit the need for per-vendor logic in user space. - Adopt or extend devlink use for debug, monitoring, fw update in many drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw, mv88e6xxx, dpaa2-eth). - In mlxsw expose critical and emergency SFP module temperature alarms. Refactor port buffer handling to make the defaults more suitable and support setting these values explicitly via the DCBNL interface. - Add XDP support for Intel's igb driver. - Support offloading TC flower classification and filtering rules to mscc_ocelot switches. - Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as fixed interval period pulse generator and one-step timestamping in dpaa-eth. - Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3) offload. - Add Lynx PHY/PCS MDIO module, and convert various drivers which have this HW to use it. Convert mvpp2 to split PCS. - Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as 7-port Mediatek MT7531 IP. - Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver, and wcn3680 support in wcn36xx. - Improve performance for packets which don't require much offloads on recent Mellanox NICs by 20% by making multiple packets share a descriptor entry. - Move chelsio inline crypto drivers (for TLS and IPsec) from the crypto subtree to drivers/net. Move MDIO drivers out of the phy directory. - Clean up a lot of W=1 warnings, reportedly the actively developed subsections of networking drivers should now build W=1 warning free. - Make sure drivers don't use in_interrupt() to dynamically adapt their code. Convert tasklets to use new tasklet_setup API (sadly this conversion is not yet complete). * tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2583 commits) Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH" net, sockmap: Don't call bpf_prog_put() on NULL pointer bpf, selftest: Fix flaky tcp_hdr_options test when adding addr to lo bpf, sockmap: Add locking annotations to iterator netfilter: nftables: allow re-computing sctp CRC-32C in 'payload' statements net: fix pos incrementment in ipv6_route_seq_next net/smc: fix invalid return code in smcd_new_buf_create() net/smc: fix valid DMBE buffer sizes net/smc: fix use-after-free of delayed events bpfilter: Fix build error with CONFIG_BPFILTER_UMH cxgb4/ch_ipsec: Replace the module name to ch_ipsec from chcr net: sched: Fix suspicious RCU usage while accessing tcf_tunnel_info bpf: Fix register equivalence tracking. rxrpc: Fix loss of final ack on shutdown rxrpc: Fix bundle counting for exclusive connections netfilter: restore NF_INET_NUMHOOKS ibmveth: Identify ingress large send packets. ibmveth: Switch order of ibmveth_helper calls. cxgb4: handle 4-tuple PEDIT to NAT mode translation selftests: Add VRF route leaking tests ...
2020-10-16Merge tag 'configfs-5.10' of git://git.infradead.org/users/hch/configfsLinus Torvalds1-40/+19
Pull configfs updates from Christoph Hellwig: "Various cleanups for the configfs samples (Bartosz Golaszewski)" * tag 'configfs-5.10' of git://git.infradead.org/users/hch/configfs: samples: configfs: prefer pr_err() over bare printk(KERN_ERR samples: configfs: don't use spaces before tabs samples: configfs: consolidate local variables of the same type samples: configfs: don't reinitialize variables which are already zeroed samples: configfs: replace simple_strtoul() with kstrtoint() samples: configfs: fix alignment in item struct samples: configfs: drop unnecessary ternary operators samples: configfs: remove redundant newlines MAINTAINERS: add the sample directory to the configfs entry
2020-10-15Merge tag 'drm-next-2020-10-15' of git://anongit.freedesktop.org/drm/drmLinus Torvalds1-1/+2
Pull drm updates from Dave Airlie: "Not a major amount of change, the i915 trees got split into display and gt trees to better facilitate higher level review, and there's a major refactoring of i915 GEM locking to use more core kernel concepts (like ww-mutexes). msm gets per-process pagetables, older AMD SI cards get DC support, nouveau got a bump in displayport support with common code extraction from i915. Outside of drm this contains a couple of patches for hexint moduleparams which you've acked, and a virtio common code tree that you should also get via it's regular path. New driver: - Cadence MHDP8546 DisplayPort bridge driver core: - cross-driver scatterlist cleanups - devm_drm conversions - remove drm_dev_init - devm_drm_dev_alloc conversion ttm: - lots of refactoring and cleanups bridges: - chained bridge support in more drivers panel: - misc new panels scheduler: - cleanup priority levels displayport: - refactor i915 code into helpers for nouveau i915: - split into display and GT trees - WW locking refactoring in GEM - execbuf2 extension mechanism - syncobj timeline support - GEN 12 HOBL display powersaving - Rocket Lake display additions - Disable FBC on Tigerlake - Tigerlake Type-C + DP improvements - Hotplug interrupt refactoring amdgpu: - Sienna Cichlid updates - Navy Flounder updates - DCE6 (SI) support for DC - Plane rotation enabled - TMZ state info ioctl - PCIe DPC recovery support - DC interrupt handling refactor - OLED panel fixes amdkfd: - add SMI events for thermal throttling - SMI interface events ioctl update - process eviction counters radeon: - move to dma_ for allocations - expose sclk via sysfs msm: - DSI support for sm8150/sm8250 - per-process GPU pagetable support - Displayport support mediatek: - move HDMI phy driver to PHY - convert mtk-dpi to bridge API - disable mt2701 tmds tegra: - bridge support exynos: - misc cleanups vc4: - dual display cleanups ast: - cleanups gma500: - conversion to GPIOd API hisilicon: - misc reworks ingenic: - clock handling and format improvements mcde: - DSI support mgag200: - desktop g200 support mxsfb: - i.MX7 + i.MX8M - alpha plane support panfrost: - devfreq support - amlogic SoC support ps8640: - EDID from eDP retrieval tidss: - AM65xx YUV workaround virtio: - virtio-gpu exported resources rcar-du: - R8A7742, R8A774E1 and R8A77961 support - YUV planar format fixes - non-visible plane handling - VSP device reference count fix - Kconfig fix to avoid displaying disabled options in .config" * tag 'drm-next-2020-10-15' of git://anongit.freedesktop.org/drm/drm: (1494 commits) drm/ingenic: Fix bad revert drm/amdgpu: Fix invalid number of character '{' in amdgpu_acpi_init drm/amdgpu: Remove warning for virtual_display drm/amdgpu: kfd_initialized can be static drm/amd/pm: setup APU dpm clock table in SMU HW initialization drm/amdgpu: prevent spurious warning drm/amdgpu/swsmu: fix ARC build errors drm/amd/display: Fix OPTC_DATA_FORMAT programming drm/amd/display: Don't allow pstate if no support in blank drm/panfrost: increase readl_relaxed_poll_timeout values MAINTAINERS: Update entry for st7703 driver after the rename Revert "gpu/drm: ingenic: Add option to mmap GEM buffers cached" drm/amd/display: HDMI remote sink need mode validation for Linux drm/amd/display: Change to correct unit on audio rate drm/amd/display: Avoid set zero in the requested clk drm/amdgpu: align frag_end to covered address space drm/amdgpu: fix NULL pointer dereference for Renoir drm/vmwgfx: fix regression in thp code due to ttm init refactor. drm/amdgpu/swsmu: add interrupt work handler for smu11 parts drm/amdgpu/swsmu: add interrupt work function ...
2020-10-15Merge tag 'char-misc-5.10-rc1' of ↵Linus Torvalds4-12/+913
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big set of char, misc, and other assorted driver subsystem patches for 5.10-rc1. There's a lot of different things in here, all over the drivers/ directory. Some summaries: - soundwire driver updates - habanalabs driver updates - extcon driver updates - nitro_enclaves new driver - fsl-mc driver and core updates - mhi core and bus updates - nvmem driver updates - eeprom driver updates - binder driver updates and fixes - vbox minor bugfixes - fsi driver updates - w1 driver updates - coresight driver updates - interconnect driver updates - misc driver updates - other minor driver updates All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (396 commits) binder: fix UAF when releasing todo list docs: w1: w1_therm: Fix broken xref, mistakes, clarify text misc: Kconfig: fix a HISI_HIKEY_USB dependency LSM: Fix type of id parameter in kernel_post_load_data prototype misc: Kconfig: add a new dependency for HISI_HIKEY_USB firmware_loader: fix a kernel-doc markup w1: w1_therm: make w1_poll_completion static binder: simplify the return expression of binder_mmap test_firmware: Test partial read support firmware: Add request_partial_firmware_into_buf() firmware: Store opt_flags in fw_priv fs/kernel_file_read: Add "offset" arg for partial reads IMA: Add support for file reads without contents LSM: Add "contents" flag to kernel_read_file hook module: Call security_kernel_post_load_data() firmware_loader: Use security_post_load_data() LSM: Introduce kernel_post_load_data() hook fs/kernel_read_file: Add file_size output argument fs/kernel_read_file: Switch buffer size arg to size_t fs/kernel_read_file: Remove redundant size argument ...
2020-10-15Merge tag 'kernel-clone-v5.9' of ↵Linus Torvalds2-5/+5
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull kernel_clone() updates from Christian Brauner: "During the v5.9 merge window we reworked the process creation codepaths across multiple architectures. After this work we were only left with the _do_fork() helper based on the struct kernel_clone_args calling convention. As was pointed out _do_fork() isn't valid kernelese especially for a helper that isn't just static. This series removes the _do_fork() helper and introduces the new kernel_clone() helper. The process creation cleanup didn't change the name to something more reasonable mainly because _do_fork() was used in quite a few places. So sending this as a separate series seemed the better strategy. I originally intended to send this early in the v5.9 development cycle after the merge window had closed but given that this was touching quite a few places I decided to defer this until the v5.10 merge window" * tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: sched: remove _do_fork() tracing: switch to kernel_clone() kgdbts: switch to kernel_clone() kprobes: switch to kernel_clone() x86: switch to kernel_clone() sparc: switch to kernel_clone() nios2: switch to kernel_clone() m68k: switch to kernel_clone() ia64: switch to kernel_clone() h8300: switch to kernel_clone() fork: introduce kernel_clone()
2020-10-14mm,kmemleak-test.c: move kmemleak-test.c to samples dirHui Su3-0/+103
kmemleak-test.c is just a kmemleak test module, which also can not be used as a built-in kernel module. Thus, i think it may should not be in mm dir, and move the kmemleak-test.c to samples/kmemleak/kmemleak-test.c. Fix the spelling of built-in by the way. Signed-off-by: Hui Su <sh_def@163.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Rob Herring <robh@kernel.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Cc: Divya Indi <divya.indi@oracle.com> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: David Howells <dhowells@redhat.com> Link: https://lkml.kernel.org/r/20200925183729.GA172837@rlk Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-13Merge tag 'docs-5.10' of git://git.lwn.net/linuxLinus Torvalds2-2/+2
Pull documentation updates from Jonathan Corbet: "As hoped, things calmed down for docs this cycle; fewer changes and almost no conflicts at all. This includes: - A reworked and expanded user-mode Linux document - Some simplifications and improvements for submitting-patches.rst - An emergency fix for (some) problems with Sphinx 3.x - Some welcome automarkup improvements to automatically generate cross-references to struct definitions and other documents - The usual collection of translation updates, typo fixes, etc" * tag 'docs-5.10' of git://git.lwn.net/linux: (81 commits) gpiolib: Update indentation in driver.rst for code excerpts Documentation/admin-guide: tainted-kernels: Fix typo occured Documentation: better locations for sysfs-pci, sysfs-tagging docs: programming-languages: refresh blurb on clang support Documentation: kvm: fix a typo Documentation: Chinese translation of Documentation/arm64/amu.rst doc: zh_CN: index files in arm64 subdirectory mailmap: add entry for <mstarovoitov@marvell.com> doc: seq_file: clarify role of *pos in ->next() docs: trace: ring-buffer-design.rst: use the new SPDX tag Documentation: kernel-parameters: clarify "module." parameters Fix references to nommu-mmap.rst docs: rewrite admin-guide/sysctl/abi.rst docs: fb: Remove vesafb scrollback boot option docs: fb: Remove sstfb scrollback boot option docs: fb: Remove matroxfb scrollback boot option docs: fb: Remove framebuffer scrollback boot option docs: replace the old User Mode Linux HowTo with a new one Documentation/admin-guide: blockdev/ramdisk: remove use of "rdev" Documentation/admin-guide: README & svga: remove use of "rdev" ...
2020-10-11samples: bpf: Refactor XDP kern program maps with BTF-defined mapDaniel T. Lee3-39/+36
Most of the samples were converted to use the new BTF-defined MAP as they moved to libbpf, but some of the samples were missing. Instead of using the previous BPF MAP definition, this commit refactors xdp_monitor and xdp_sample_pkts_kern MAP definition with the new BTF-defined MAP format. Also, this commit removes the max_entries attribute at PERF_EVENT_ARRAY map type. The libbpf's bpf_object__create_map() will automatically set max_entries to the maximum configured number of CPUs on the host. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201010181734.1109-4-danieltimlee@gmail.com
2020-10-11samples: bpf: Replace attach_tracepoint() to attach() in xdp_redirect_cpuDaniel T. Lee2-82/+73
>From commit d7a18ea7e8b6 ("libbpf: Add generic bpf_program__attach()"), for some BPF programs, it is now possible to attach BPF programs with __attach() instead of explicitly calling __attach_<type>(). This commit refactors the __attach_tracepoint() with libbpf's generic __attach() method. In addition, this refactors the logic of setting the map FD to simplify the code. Also, the missing removal of bpf_load.o in Makefile has been fixed. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201010181734.1109-3-danieltimlee@gmail.com
2020-10-11samples: bpf: Refactor xdp_monitor with libbpfDaniel T. Lee2-40/+121
To avoid confusion caused by the increasing fragmentation of the BPF Loader program, this commit would like to change to the libbpf loader instead of using the bpf_load. Thanks to libbpf's bpf_link interface, managing the tracepoint BPF program is much easier. bpf_program__attach_tracepoint manages the enable of tracepoint event and attach of BPF programs to it with a single interface bpf_link, so there is no need to manage event_fd and prog_fd separately. This commit refactors xdp_monitor with using this libbpf API, and the bpf_load is removed and migrated to libbpf. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201010181734.1109-2-danieltimlee@gmail.com
2020-10-07samples: configfs: prefer pr_err() over bare printk(KERN_ERRBartosz Golaszewski1-3/+2
pr_*() printing helpers are preferred over using bare printk(). Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: don't use spaces before tabsBartosz Golaszewski1-1/+1
The copyright notice alarms checkpatch.pl of usin spaces before tabs. Fix this. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: consolidate local variables of the same typeBartosz Golaszewski1-2/+1
Move local variables of the same type into a single line for better readability. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: don't reinitialize variables which are already zeroedBartosz Golaszewski1-2/+0
The structure containing the storeme field is allocated using kzalloc(). There's no need to set it to 0 again. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: replace simple_strtoul() with kstrtoint()Bartosz Golaszewski1-20/+9
simple_strtoul() is deprecated. Use kstrtoint(). Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: fix alignment in item structBartosz Golaszewski1-1/+1
Aling the assignment of a static structure's field to be consistent with all other instances. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: drop unnecessary ternary operatorsBartosz Golaszewski1-5/+5
Checking pointers for NULL value before passing them to container_of() is pointless because even if we return NULL from the ternary operator, none of the users checks the returned value but they instead dereference it unconditionally. AFAICT this cannot really happen either. Simplify the code by removing the ternary operators from to_childless() et al. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-07samples: configfs: remove redundant newlinesBartosz Golaszewski1-6/+0
There's no need for suplemental newlines in the source file - especially since the examples are well divided with comments already. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-06samples: bpf: Driver interrupt statistics in xdpsockCiara Loftus1-1/+119
Add an option to count the number of interrupts generated per second and total number of interrupts during the lifetime of the application for a given interface. This information is extracted from /proc/interrupts. Since there is no naming convention across drivers, the user must provide the string which is specific to their interface in the /proc/interrupts file on the command line. Usage: ./xdpsock ... -I <irq_str> eg. for queue 0 of i40e device eth0: ./xdpsock ... -I i40e-eth0-TxRx-0 Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201002133612.31536-3-ciara.loftus@intel.com
2020-10-06samples: bpf: Count syscalls in xdpsockCiara Loftus1-10/+103
Categorise and record syscalls issued in the xdpsock sample app. The categories recorded are: rx_empty_polls: polls when the rx ring is empty fill_fail_polls: polls when failed to get addr from fill ring copy_tx_sendtos: sendtos issued for tx when copy mode enabled tx_wakeup_sendtos: sendtos issued when tx ring needs waking up opt_polls: polls issued since the '-p' flag is set Print the stats using '-a' on the xdpsock command line. Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20201002133612.31536-2-ciara.loftus@intel.com
2020-10-06samples: bpf: Split xdpsock stats into new structCiara Loftus1-54/+69
New statistics will be added in future commits. In preparation for this, let's split out the existing statistics into their own struct. Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20201002133612.31536-1-ciara.loftus@intel.com
2020-10-06samples/bpf: Fix a compilation error with fallthrough markingYonghong Song1-1/+2
Compiling samples/bpf hits an error related to fallthrough marking. ... CC samples/bpf/hbm.o samples/bpf/hbm.c: In function ‘main’: samples/bpf/hbm.c:486:4: error: ‘fallthrough’ undeclared (first use in this function) fallthrough; ^~~~~~~~~~~ The "fallthrough" is not defined under tools/include directory. Rather, it is "__fallthrough" is defined in linux/compiler.h. Including "linux/compiler.h" and using "__fallthrough" fixed the issue. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201006043427.1891805-1-yhs@fb.com
2020-10-06samples/bpf: Change Makefile to cope with latest llvmYonghong Song1-1/+10
With latest llvm trunk, bpf programs under samples/bpf directory, if using CORE, may experience the following errors: LLVM ERROR: Cannot select: intrinsic %llvm.preserve.struct.access.index PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace. Stack dump: 0. Program arguments: llc -march=bpf -filetype=obj -o samples/bpf/test_probe_write_user_kern.o 1. Running pass 'Function Pass Manager' on module '<stdin>'. 2. Running pass 'BPF DAG->DAG Pattern Instruction Selection' on function '@bpf_prog1' #0 0x000000000183c26c llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/data/users/yhs/work/llvm-project/llvm/build.cur/install/bin/llc+0x183c26c) ... #7 0x00000000017c375e (/data/users/yhs/work/llvm-project/llvm/build.cur/install/bin/llc+0x17c375e) #8 0x00000000016a75c5 llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) (/data/users/yhs/work/llvm-project/llvm/build.cur/install/bin/llc+0x16a75c5) #9 0x00000000016ab4f8 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/data/users/yhs/work/llvm-project/llvm/build.cur/install/bin/llc+0x16ab4f8) ... Aborted (core dumped) | llc -march=bpf -filetype=obj -o samples/bpf/test_probe_write_user_kern.o The reason is due to llvm change https://reviews.llvm.org/D87153 where the CORE relocation global generation is moved from the beginning of target dependent optimization (llc) to the beginning of target independent optimization (opt). Since samples/bpf programs did not use vmlinux.h and its clang compilation uses native architecture, we need to adjust arch triple at opt level to do CORE relocation global generation properly. Otherwise, the above error will appear. This patch fixed the issue by introduce opt and llvm-dis to compilation chain, which will do proper CORE relocation global generation as well as O2 level optimization. Tested with llvm10, llvm11 and trunk/llvm12. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20201006043427.1891742-1-yhs@fb.com
2020-10-02misc: vop: add round_up(x,4) for vring_size to avoid kernel panicSherry Sun1-2/+2
Since struct _mic_vring_info and vring are allocated together and follow vring, if the vring_size() is not four bytes aligned, which will cause the start address of struct _mic_vring_info is not four byte aligned. For example, when vring entries is 128, the vring_size() will be 5126 bytes. The _mic_vring_info struct layout in ddr looks like: 0x90002400: 00000000 00390000 EE010000 0000C0FF Here 0x39 is the avail_idx member, and 0xC0FFEE01 is the magic member. When EP use ioread32(magic) to reads the magic in RC's share memory, it will cause kernel panic on ARM64 platform due to the cross-byte io read. Here read magic in user space use le32toh(vr0->info->magic) will meet the same issue. So add round_up(x,4) for vring_size, then the struct _mic_vring_info will store in this way: 0x90002400: 00000000 00000000 00000039 C0FFEE01 Which will avoid kernel panic when read magic in struct _mic_vring_info. Signed-off-by: Sherry Sun <sherry.sun@nxp.com> Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Link: https://lore.kernel.org/r/20200929091106.24624-4-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02samples: mpssd: fix the build errors when enable DEBUG in mpssd.cSherry Sun1-10/+10
If enable DEBUG, will meet the following errors when build mpssd, so fix them here. Only one error is listed here, other errors are similar. mpssd.c: In function ‘virtio_net’: mpssd.c:615:21: error: incompatible type for argument 2 of ‘disp_iovec’ disp_iovec(mic, copy, __func__, __LINE__); ^~~~ mpssd.c:361:1: note: expected ‘struct mic_copy_desc *’ but argument is of type ‘struct mic_copy_desc’ disp_iovec(struct mic_info *mic, struct mic_copy_desc *copy, ^~~~~~~~~~ Signed-off-by: Sherry Sun <sherry.sun@nxp.com> Link: https://lore.kernel.org/r/20200925071831.8025-2-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-30bpf, selftests: Use bpf_tail_call_static where appropriateDaniel Borkmann1-9/+11
For those locations where we use an immediate tail call map index use the newly added bpf_tail_call_static() helper. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/3cfb2b799a62d22c6e7ae5897c23940bdcc24cbc.1601477936.git.daniel@iogearbox.net
2020-09-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller7-19/+37
Alexei Starovoitov says: ==================== pull-request: bpf-next 2020-09-23 The following pull-request contains BPF updates for your *net-next* tree. We've added 95 non-merge commits during the last 22 day(s) which contain a total of 124 files changed, 4211 insertions(+), 2040 deletions(-). The main changes are: 1) Full multi function support in libbpf, from Andrii. 2) Refactoring of function argument checks, from Lorenz. 3) Make bpf_tail_call compatible with functions (subprograms), from Maciej. 4) Program metadata support, from YiFei. 5) bpf iterator optimizations, from Yonghong. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-22nitro_enclaves: Add sample for ioctl interface usageAndra Paraschiv3-0/+901
Add a user space sample for the usage of the ioctl interface provided by the Nitro Enclaves driver. Changelog v9 -> v10 * Update commit message to include the changelog before the SoB tag(s). v8 -> v9 * No changes. v7 -> v8 * Track NE custom error codes for invalid page size, invalid flags and enclave CID. * Update the heartbeat logic to have a listener fd first, then start the enclave and then accept connection to get the heartbeat. * Update the reference link to the hugetlb documentation. v6 -> v7 * Track POLLNVAL as poll event in addition to POLLHUP. v5 -> v6 * Remove "rc" mentioning when printing errno string. * Remove the ioctl to query API version. * Include usage info for NUMA-aware hugetlb configuration. * Update documentation to kernel-doc format. * Add logic for enclave image loading. v4 -> v5 * Print enclave vCPU ids when they are created. * Update logic to map the modified vCPU ioctl call. * Add check for the path to the enclave image to be less than PATH_MAX. * Update the ioctl calls error checking logic to match the NE specific error codes. v3 -> v4 * Update usage details to match the updates in v4. * Update NE ioctl interface usage. v2 -> v3 * Remove the include directory to use the uapi from the kernel. * Remove the GPL additional wording as SPDX-License-Identifier is already in place. v1 -> v2 * New in v2. Reviewed-by: Alexander Graf <graf@amazon.com> Signed-off-by: Alexandru Vasile <lexnv@amazon.com> Signed-off-by: Andra Paraschiv <andraprs@amazon.com> Link: https://lore.kernel.org/r/20200921121732.44291-17-andraprs@amazon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-19samples/bpf: Fix test_map_in_map on s390Ilya Leoshkevich1-4/+3
s390 uses socketcall multiplexer instead of individual socket syscalls. Therefore, "kprobe/" SYSCALL(sys_connect) does not trigger and test_map_in_map fails. Fix by using "kprobe/__sys_connect" instead. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200915115519.3769807-1-iii@linux.ibm.com
2020-09-17Merge branch 'for-5.10-drm-sg-fix' of https://github.com/mszyprow/linux into ↵Dave Airlie1-1/+2
drm-next Please pull a set of fixes for various DRM drivers that finally resolve incorrect usage of the scatterlists (struct sg_table nents and orig_nents entries), what causes issues when IOMMU is used. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200910080505.24456-1-m.szyprowski@samsung.com
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