syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in __perf_event_read_value / perf_event_set_state write to 0xffff888111a42e80 of 8 bytes by task 10046 on cpu 0: perf_event_update_time kernel/events/core.c:641 [inline] perf_event_set_state+0x1a1/0x3f0 kernel/events/core.c:660 event_sched_out+0x444/0x630 kernel/events/core.c:2301 group_sched_out kernel/events/core.c:2325 [inline] __pmu_ctx_sched_out+0x3a0/0x4d0 kernel/events/core.c:3271 ctx_sched_out+0x294/0x2f0 kernel/events/core.c:3340 task_ctx_sched_out kernel/events/core.c:2672 [inline] perf_event_context_sched_out kernel/events/core.c:3580 [inline] __perf_event_task_sched_out+0x40f/0xfe0 kernel/events/core.c:3679 perf_event_task_sched_out include/linux/perf_event.h:1496 [inline] prepare_task_switch kernel/sched/core.c:5212 [inline] context_switch kernel/sched/core.c:5355 [inline] __schedule+0x939/0x940 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x55/0xc0 kernel/sched/core.c:6837 futex_wait_queue kernel/futex/waitwake.c:370 [inline] __futex_wait+0x141/0x290 kernel/futex/waitwake.c:669 futex_wait+0x99/0x1c0 kernel/futex/waitwake.c:697 do_futex+0x276/0x370 kernel/futex/syscalls.c:102 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x25d/0x3a0 kernel/futex/syscalls.c:160 __x64_sys_futex+0x78/0x90 kernel/futex/syscalls.c:160 x64_sys_call+0x28c1/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:203 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888111a42e80 of 8 bytes by task 10058 on cpu 1: __perf_event_read_value+0xba/0x1c0 kernel/events/core.c:5480 perf_read_one kernel/events/core.c:5635 [inline] __perf_read kernel/events/core.c:5688 [inline] perf_read+0x17a/0x4a0 kernel/events/core.c:5705 loop_rw_iter+0x23d/0x360 io_iter_do_read io_uring/rw.c:764 [inline] __io_read+0x930/0x9b0 io_uring/rw.c:857 io_read+0x1e/0x60 io_uring/rw.c:927 io_issue_sqe+0x150/0xc80 io_uring/io_uring.c:1751 io_wq_submit_work+0x42b/0x5a0 io_uring/io_uring.c:1860 io_worker_handle_work+0x45a/0x9a0 io_uring/io-wq.c:597 io_wq_worker+0x286/0x820 io_uring/io-wq.c:651 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000061d6fe1 -> 0x00000000061d857b Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10058 Comm: iou-wrk-10046 Not tainted 6.10.0-rc1-syzkaller-00104-gd8ec19857b09 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/06/01 04:06 | upstream | d8ec19857b09 | 3113787f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __perf_event_read_value / perf_event_set_state |