================================================================== BUG: KCSAN: data-race in mm_update_next_owner / stop_this_handle write to 0xffff88810390802c of 4 bytes by task 8399 on cpu 0: memalloc_nofs_restore include/linux/sched/mm.h:258 [inline] stop_this_handle+0x2ae/0x2f0 fs/jbd2/transaction.c:744 jbd2_journal_stop+0x573/0x6d0 fs/jbd2/transaction.c:1907 __ext4_journal_stop+0x99/0x110 fs/ext4/ext4_jbd2.c:127 ext4_evict_inode+0xc04/0xef0 fs/ext4/inode.c:334 evict+0x1aa/0x410 fs/inode.c:578 iput_final fs/inode.c:1654 [inline] iput+0x3fd/0x520 fs/inode.c:1680 do_unlinkat+0x2e9/0x4f0 fs/namei.c:4103 __do_sys_unlink fs/namei.c:4143 [inline] __se_sys_unlink fs/namei.c:4141 [inline] __x64_sys_unlink+0x2c/0x30 fs/namei.c:4141 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88810390802c of 4 bytes by task 21893 on cpu 1: mm_update_next_owner+0x1d9/0x4e0 kernel/exit.c:388 exit_mm+0x33c/0x430 kernel/exit.c:500 do_exit+0x3ff/0x1670 kernel/exit.c:812 do_group_exit+0x17d/0x180 kernel/exit.c:922 __do_sys_exit_group+0xb/0x10 kernel/exit.c:933 __se_sys_exit_group+0x5/0x10 kernel/exit.c:931 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:931 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 21893 Comm: syz-executor.2 Not tainted 5.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================