list_del corruption. next->prev should be ffff8880979d7910, but was ffff8880976b11f8 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:54! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 16618 Comm: systemd-udevd Not tainted 4.14.229-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880b56e4240 task.stack: ffff88822bd38000 RIP: 0010:__list_del_entry_valid.cold+0x48/0x4a lib/list_debug.c:54 RSP: 0018:ffff88822bd3fe58 EFLAGS: 00010282 RAX: 0000000000000054 RBX: ffff8880976b10c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bbbc0 RDI: ffffed10457a7fc1 RBP: ffff8880979d7910 R08: 0000000000000054 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880af7c7010 R13: ffff888000138010 R14: ffff8880979d7918 R15: 0000000000000000 FS: 00007fd0da5238c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff90ea3d108 CR3: 000000022da73000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del_init include/linux/list.h:159 [inline] fsnotify_detach_mark+0xea/0x350 fs/notify/mark.c:348 fsnotify_destroy_mark+0x2a/0x40 fs/notify/mark.c:391 SYSC_inotify_rm_watch fs/notify/inotify/inotify_user.c:750 [inline] SyS_inotify_rm_watch+0xc4/0x120 fs/notify/inotify/inotify_user.c:725 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fd0d93a3427 RSP: 002b:00007fff6d285b88 EFLAGS: 00000246 ORIG_RAX: 00000000000000ff RAX: ffffffffffffffda RBX: 000056423e72b730 RCX: 00007fd0d93a3427 RDX: 0000000000000007 RSI: 0000000000005d70 RDI: 0000000000000009 RBP: 0000000000005d70 R08: 000056423e71f1e9 R09: 0000000000000020 R10: 9d9fd71d014acb6e R11: 0000000000000246 R12: 00007fff6d285ca0 R13: 000056423e72b730 R14: 0000000000000003 R15: 000000000000000e Code: 87 e8 3b f3 f7 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 c0 ec cc 87 e8 27 f3 f7 ff 0f 0b 48 89 ee 48 c7 c7 80 ed cc 87 e8 16 f3 f7 ff <0f> 0b 45 31 e4 e9 5b 7e 10 fc 48 89 ef 48 89 34 24 e8 3c c8 75 RIP: __list_del_entry_valid.cold+0x48/0x4a lib/list_debug.c:54 RSP: ffff88822bd3fe58 ---[ end trace b013f2497138fee2 ]---