================================================================== BUG: KCSAN: data-race in ring_buffer_unlock_commit / ring_buffer_unlock_commit write to 0xffff888100074cb4 of 1 bytes by task 7348 on cpu 1: rb_wakeups kernel/trace/ring_buffer.c:4295 [inline] ring_buffer_unlock_commit+0x6a/0x440 kernel/trace/ring_buffer.c:4495 __buffer_unlock_commit kernel/trace/trace.h:1697 [inline] trace_buffer_unlock_commit_regs+0x43/0x310 kernel/trace/trace.c:2049 trace_event_buffer_commit+0x149/0x590 kernel/trace/trace.c:2024 do_trace_event_raw_event_hrtimer_setup include/trace/events/timer.h:193 [inline] trace_event_raw_event_hrtimer_setup+0xc9/0x170 include/trace/events/timer.h:193 __do_trace_hrtimer_setup include/trace/events/timer.h:193 [inline] trace_hrtimer_setup include/trace/events/timer.h:193 [inline] debug_setup_on_stack kernel/time/hrtimer.c:523 [inline] hrtimer_setup_sleeper_on_stack+0xd1/0xf0 kernel/time/hrtimer.c:2366 schedule_hrtimeout_range_clock+0x71/0x1a0 kernel/time/sleep_timeout.c:211 schedule_hrtimeout_range+0x28/0x40 kernel/time/sleep_timeout.c:263 poll_schedule_timeout fs/select.c:241 [inline] do_select+0xed3/0xfa0 fs/select.c:603 core_sys_select+0x453/0x730 fs/select.c:677 do_pselect fs/select.c:770 [inline] __do_sys_pselect6 fs/select.c:809 [inline] __se_sys_pselect6+0x23f/0x2a0 fs/select.c:800 __x64_sys_pselect6+0x78/0x90 fs/select.c:800 x64_sys_call+0x8d5/0x3020 arch/x86/include/generated/asm/syscalls_64.h:271 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888100074cb4 of 1 bytes by task 49 on cpu 0: rb_wakeups kernel/trace/ring_buffer.c:4294 [inline] ring_buffer_unlock_commit+0x54/0x440 kernel/trace/ring_buffer.c:4495 __buffer_unlock_commit kernel/trace/trace.h:1697 [inline] trace_buffer_unlock_commit_regs+0x43/0x310 kernel/trace/trace.c:2049 trace_event_buffer_commit+0x149/0x590 kernel/trace/trace.c:2024 do_trace_event_raw_event_consume_skb include/trace/events/skb.h:57 [inline] trace_event_raw_event_consume_skb+0xb9/0x160 include/trace/events/skb.h:57 __do_trace_consume_skb include/trace/events/skb.h:57 [inline] trace_consume_skb include/trace/events/skb.h:57 [inline] consume_skb+0x10a/0x130 net/core/skbuff.c:1444 nsim_dev_trap_report drivers/net/netdevsim/dev.c:892 [inline] nsim_dev_trap_report_work+0x529/0x630 drivers/net/netdevsim/dev.c:922 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x4d4/0x9a0 kernel/workqueue.c:3405 worker_thread+0x569/0x750 kernel/workqueue.c:3486 kthread+0x221/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 49 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound nsim_dev_trap_report_work ==================================================================