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================================================================== BUG: KCSAN: data-race in __perf_event_read_value / perf_event_set_state write to 0xffff888150734dd0 of 8 bytes by task 23120 on cpu 1: perf_event_update_time kernel/events/core.c:675 [inline] perf_event_set_state+0x1a1/0x3f0 kernel/events/core.c:694 event_sched_in+0xe9/0x6d0 kernel/events/core.c:2604 group_sched_in kernel/events/core.c:2653 [inline] merge_sched_in kernel/events/core.c:3924 [inline] visit_groups_merge+0xc26/0x1c00 kernel/events/core.c:3869 pmu_groups_sched_in kernel/events/core.c:3951 [inline] __pmu_ctx_sched_in+0xc8/0xf0 kernel/events/core.c:3963 ctx_sched_in+0x361/0x3b0 kernel/events/core.c:4014 perf_event_sched_in kernel/events/core.c:2751 [inline] perf_event_context_sched_in kernel/events/core.c:4061 [inline] __perf_event_task_sched_in+0x56a/0xa10 kernel/events/core.c:4090 perf_event_task_sched_in include/linux/perf_event.h:1517 [inline] finish_task_switch+0x218/0x2b0 kernel/sched/core.c:5238 context_switch kernel/sched/core.c:5372 [inline] __schedule+0x6fa/0x930 kernel/sched/core.c:6756 preempt_schedule_common kernel/sched/core.c:6935 [inline] __cond_resched+0x28/0x50 kernel/sched/core.c:7280 _cond_resched include/linux/sched.h:2056 [inline] io_handle_tw_list+0x180/0x200 io_uring/io_uring.c:1065 tctx_task_work_run+0x6e/0x1c0 io_uring/io_uring.c:1121 tctx_task_work+0x40/0x80 io_uring/io_uring.c:1139 task_work_run+0x13a/0x1a0 kernel/task_work.c:239 get_signal+0xe78/0x1000 kernel/signal.c:2790 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x62/0x120 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888150734dd0 of 8 bytes by task 23124 on cpu 0: __perf_event_read_value+0xba/0x1c0 kernel/events/core.c:5601 perf_read_one kernel/events/core.c:5756 [inline] __perf_read kernel/events/core.c:5809 [inline] perf_read+0x174/0x4a0 kernel/events/core.c:5826 loop_rw_iter+0x237/0x360 io_iter_do_read io_uring/rw.c:772 [inline] __io_read+0xa5a/0xaf0 io_uring/rw.c:869 io_read+0x1e/0x60 io_uring/rw.c:947 io_issue_sqe+0x150/0xc10 io_uring/io_uring.c:1740 io_wq_submit_work+0x3eb/0x540 io_uring/io_uring.c:1849 io_worker_handle_work+0x486/0x9d0 io_uring/io-wq.c:601 io_wq_worker+0x286/0x820 io_uring/io-wq.c:655 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: 0x00000000062b4ced -> 0x00000000062bf2f9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 23124 Comm: iou-wrk-23120 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/12/26 15:09 | upstream | 9b2ffa6148b1 | d3ccff63 | .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 | ||
2024/12/26 15:08 | upstream | 9b2ffa6148b1 | d3ccff63 | .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 |