================================================================== BUG: KCSAN: data-race in exit_signals / mm_update_next_owner write to 0xffff888125767064 of 4 bytes by task 22807 on cpu 0: exit_signals+0x135/0x4c0 kernel/signal.c:2827 do_exit+0x17b/0x11e0 kernel/exit.c:744 do_group_exit+0xae/0x1a0 kernel/exit.c:893 __do_sys_exit_group kernel/exit.c:904 [inline] __se_sys_exit_group kernel/exit.c:902 [inline] __x64_sys_exit_group+0x2b/0x30 kernel/exit.c:902 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888125767064 of 4 bytes by task 22810 on cpu 1: mm_update_next_owner+0x376/0x5a0 kernel/exit.c:383 exit_mm kernel/exit.c:478 [inline] do_exit+0x63c/0x11e0 kernel/exit.c:782 do_group_exit+0xae/0x1a0 kernel/exit.c:893 get_signal+0x2a7/0x1290 kernel/signal.c:2739 do_signal+0x2b/0x840 arch/x86/kernel/signal.c:784 exit_to_usermode_loop+0x24a/0x2c0 arch/x86/entry/common.c:161 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x38b/0x3b0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 22810 Comm: syz-executor.2 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================