================================================================== BUG: KCSAN: data-race in complete_signal / do_nanosleep write to 0xffff8880b0a890a4 of 4 bytes by task 12494 on cpu 0: freezer_count include/linux/freezer.h:121 [inline] freezable_schedule include/linux/freezer.h:173 [inline] do_nanosleep+0x121/0x390 kernel/time/hrtimer.c:1879 hrtimer_nanosleep kernel/time/hrtimer.c:1932 [inline] __do_sys_nanosleep kernel/time/hrtimer.c:1966 [inline] __se_sys_nanosleep+0x20b/0x2a0 kernel/time/hrtimer.c:1953 __x64_sys_nanosleep+0x2d/0x40 kernel/time/hrtimer.c:1953 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880b0a890a4 of 4 bytes by interrupt on cpu 1: wants_signal kernel/signal.c:977 [inline] complete_signal+0x7c/0x5f0 kernel/signal.c:1000 send_sigqueue+0x261/0x450 kernel/signal.c:1880 posix_timer_event kernel/time/posix-timers.c:354 [inline] posix_timer_fn+0xe8/0x210 kernel/time/posix-timers.c:380 __run_hrtimer+0x154/0x4b0 kernel/time/hrtimer.c:1520 __hrtimer_run_queues kernel/time/hrtimer.c:1584 [inline] hrtimer_interrupt+0x37c/0xa40 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0xa3/0x280 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0x9f/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:404 [inline] batadv_nc_worker+0xfd/0xa00 net/batman-adv/network-coding.c:718 process_one_work+0x3cb/0x990 kernel/workqueue.c:2269 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415 kthread+0x210/0x220 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 184 Comm: kworker/u4:3 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker ==================================================================