================================================================== BUG: KCSAN: data-race in do_coredump / do_nanosleep read-write to 0xffff888105dc0024 of 4 bytes by task 8452 on cpu 0: freezer_count include/linux/freezer.h:121 [inline] freezable_schedule include/linux/freezer.h:173 [inline] do_nanosleep+0x111/0x390 kernel/time/hrtimer.c:1878 hrtimer_nanosleep kernel/time/hrtimer.c:1931 [inline] __do_sys_nanosleep kernel/time/hrtimer.c:1965 [inline] __se_sys_nanosleep+0x20b/0x2a0 kernel/time/hrtimer.c:1952 __x64_sys_nanosleep+0x2d/0x40 kernel/time/hrtimer.c:1952 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888105dc0024 of 4 bytes by task 14668 on cpu 1: zap_threads fs/coredump.c:427 [inline] coredump_wait fs/coredump.c:462 [inline] do_coredump+0x3bd/0x1ea0 fs/coredump.c:629 get_signal+0xf65/0x1510 kernel/signal.c:2752 arch_do_signal+0x25/0x260 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xde/0x170 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:266 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14668 Comm: syz-executor.3 Not tainted 5.10.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================