================================================================== BUG: KCSAN: assert: race in __block_task kernel/sched/sched.h:2773 [inline] BUG: KCSAN: assert: race in dequeue_entities+0x6df/0x760 kernel/sched/fair.c:7180 race at unknown origin, with assert no writes to 0xffff8881001cb1e8 of 4 bytes by task 31088 on cpu 1: __block_task kernel/sched/sched.h:2773 [inline] dequeue_entities+0x6df/0x760 kernel/sched/fair.c:7180 pick_next_entity kernel/sched/fair.c:5627 [inline] pick_task_fair kernel/sched/fair.c:8859 [inline] pick_next_task_fair+0x7d/0x410 kernel/sched/fair.c:8879 __pick_next_task kernel/sched/core.c:5968 [inline] pick_next_task kernel/sched/core.c:6490 [inline] __schedule+0x284/0x940 kernel/sched/core.c:6644 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x55/0xc0 kernel/sched/core.c:6782 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+0x23c4/0x2d60 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 value changed: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 31088 Comm: syz.6.6033 Tainted: G W 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================