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WARNING in up_write

Status: fixed on 2018/09/05 09:58
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+dc5ab2babdf22ca091af@syzkaller.appspotmail.com
Fix commit: d7d760efad70 locking/rwsem: Add a new RWSEM_ANONYMOUSLY_OWNED flag
First crash: 2493d, last: 2445d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
WARNING in up_write 15 (16) 2018/09/04 08:28

Sample crash report:
EXT4-fs (sda1): shut down requested (0)
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(sem->owner != get_current())
WARNING: CPU: 0 PID: 4473 at kernel/locking/rwsem.c:133 up_write+0x1c6/0x210 kernel/locking/rwsem.c:133
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4473 Comm: syzkaller097542 Not tainted 4.16.0+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b9/0x29f lib/dump_stack.c:53
 panic+0x22f/0x4de kernel/panic.c:183
 __warn.cold.8+0x163/0x1a3 kernel/panic.c:547
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1bc/0x470 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:991
RIP: 0010:up_write+0x1c6/0x210 kernel/locking/rwsem.c:133
RSP: 0018:ffff8801b9587670 EFLAGS: 00010286
RAX: 0000000000000030 RBX: ffff8801cd7d8f00 RCX: ffffffff815ecc1d
RDX: 0000000000000000 RSI: ffffffff815f1a01 RDI: 0000000000000001
RBP: ffff8801b95876f8 R08: ffff8801ad4a6140 R09: fffffbfff1170628
R10: fffffbfff1170628 R11: ffffffff88b83143 R12: 1ffff100372b0ece
R13: dffffc0000000000 R14: ffff8801b95876d0 R15: ffff8801cd7d8f58
 percpu_up_write+0xcd/0x110 kernel/locking/percpu-rwsem.c:183
 sb_freeze_unlock fs/super.c:1390 [inline]
 thaw_super+0x205/0x270 fs/super.c:1524
 thaw_bdev+0x162/0x1a0 fs/block_dev.c:555
 ext4_shutdown fs/ext4/ioctl.c:486 [inline]
 ext4_ioctl+0x12da/0x4190 fs/ext4/ioctl.c:1043
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x1cf/0x1650 fs/ioctl.c:684
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
 SYSC_ioctl fs/ioctl.c:708 [inline]
 SyS_ioctl+0x24/0x30 fs/ioctl.c:706
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x43fcb9
RSP: 002b:00007ffcd3fefe38 EFLAGS: 00000213 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9
RDX: 0000000020000a80 RSI: 000000008004587d RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000213 R12: 00000000004015e0
R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (725):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/06 06:45 upstream 3c8ba0d61d04 a932eae6 .config console log report syz C ci-upstream-kasan-gce-root
2018/04/02 22:11 upstream 86bbbebac193 676bd07e .config console log report syz C ci-upstream-kasan-gce-root
2018/05/20 20:01 upstream 203ec2fed17a f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/20 18:03 upstream 203ec2fed17a f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/20 13:55 upstream 203ec2fed17a f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/20 10:59 upstream 203ec2fed17a f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/20 05:37 upstream 0b449a441dac f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/20 04:08 upstream 0b449a441dac f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/20 02:22 upstream 0b449a441dac f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/05/19 20:24 upstream 73fcb1a370c7 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 19:09 upstream 73fcb1a370c7 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 17:33 upstream 73fcb1a370c7 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 11:20 upstream 73fcb1a370c7 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 10:14 upstream 73fcb1a370c7 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 07:42 upstream 2c71d338bef2 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 04:04 upstream 2c71d338bef2 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/19 00:22 upstream 2c71d338bef2 849705db .config console log report ci-upstream-kasan-gce-root
2018/05/18 15:25 upstream 3acf4e395260 c992b767 .config console log report ci-upstream-kasan-gce-root
2018/05/18 11:23 upstream 3acf4e395260 c992b767 .config console log report ci-upstream-kasan-gce-root
2018/05/18 10:00 upstream 3acf4e395260 c992b767 .config console log report ci-upstream-kasan-gce-root
2018/05/18 08:48 upstream 3acf4e395260 c992b767 .config console log report ci-upstream-kasan-gce-root
2018/05/18 05:36 upstream 305bb5521282 738d58ad .config console log report ci-upstream-kasan-gce-root
2018/05/18 01:18 upstream 305bb5521282 738d58ad .config console log report ci-upstream-kasan-gce-root
2018/05/17 21:41 upstream 305bb5521282 738d58ad .config console log report ci-upstream-kasan-gce-root
2018/05/17 20:37 upstream 305bb5521282 738d58ad .config console log report ci-upstream-kasan-gce-root
2018/05/17 18:01 upstream e6506eb24187 90c54c49 .config console log report ci-upstream-kasan-gce-root
2018/05/17 11:38 upstream e6506eb24187 90c54c49 .config console log report ci-upstream-kasan-gce-root
2018/05/17 09:19 upstream e6506eb24187 a367c1d7 .config console log report ci-upstream-kasan-gce-root
2018/05/17 07:50 upstream e6506eb24187 a367c1d7 .config console log report ci-upstream-kasan-gce-root
2018/05/17 06:37 upstream e6506eb24187 a367c1d7 .config console log report ci-upstream-kasan-gce-root
2018/05/17 03:48 upstream e6506eb24187 a367c1d7 .config console log report ci-upstream-kasan-gce-root
2018/05/17 02:38 upstream e6506eb24187 a367c1d7 .config console log report ci-upstream-kasan-gce-root
2018/05/16 23:00 upstream 21b9f1c7e319 a367c1d7 .config console log report ci-upstream-kasan-gce-root
2018/05/16 17:53 upstream 21b9f1c7e319 75b2448a .config console log report ci-upstream-kasan-gce-root
2018/05/16 11:34 upstream 21b9f1c7e319 75b2448a .config console log report ci-upstream-kasan-gce-root
2018/05/16 09:34 upstream 21b9f1c7e319 75b2448a .config console log report ci-upstream-kasan-gce-root
2018/05/16 07:07 upstream eeba2dfa6a0d 68ce85f1 .config console log report ci-upstream-kasan-gce-root
2018/05/16 04:39 upstream eeba2dfa6a0d 68ce85f1 .config console log report ci-upstream-kasan-gce-root
2018/05/16 00:16 upstream eeba2dfa6a0d 68ce85f1 .config console log report ci-upstream-kasan-gce-root
2018/05/15 21:44 upstream eeba2dfa6a0d 68ce85f1 .config console log report ci-upstream-kasan-gce-root
2018/05/15 19:18 upstream eeba2dfa6a0d 661fd7b9 .config console log report ci-upstream-kasan-gce-root
2018/05/15 16:13 upstream 67b8d5c70812 661fd7b9 .config console log report ci-upstream-kasan-gce-root
2018/05/15 13:09 upstream 67b8d5c70812 661fd7b9 .config console log report ci-upstream-kasan-gce-root
2018/05/15 08:25 upstream 67b8d5c70812 661fd7b9 .config console log report ci-upstream-kasan-gce-root
2018/05/14 11:01 upstream 66e1c94db3cd 2407e740 .config console log report ci-upstream-kasan-gce-root
2018/05/14 08:03 upstream 66e1c94db3cd 481f030c .config console log report ci-upstream-kasan-gce-root
2018/05/14 03:35 upstream 66e1c94db3cd 481f030c .config console log report ci-upstream-kasan-gce-root
2018/05/13 23:41 upstream 66e1c94db3cd 481f030c .config console log report ci-upstream-kasan-gce-root
2018/05/13 19:24 upstream ccda3c4b7777 c05b619d .config console log report ci-upstream-kasan-gce-root
2018/05/13 17:25 upstream ccda3c4b7777 c05b619d .config console log report ci-upstream-kasan-gce-root
2018/05/13 14:08 upstream ccda3c4b7777 c05b619d .config console log report ci-upstream-kasan-gce-root
2018/05/13 12:40 upstream ccda3c4b7777 c05b619d .config console log report ci-upstream-kasan-gce-root
2018/05/13 06:45 upstream 427fbe89261d e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/13 04:46 upstream 427fbe89261d e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/13 00:52 upstream 427fbe89261d e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/12 21:47 upstream f0ab773f5c96 e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/12 18:41 upstream f0ab773f5c96 e726f42b .config console log report ci-upstream-kasan-gce-root
2018/04/02 21:55 upstream 86bbbebac193 676bd07e .config console log report ci-upstream-kasan-gce-root
2018/04/16 04:31 bpf-next 17dec0a94915 7a67784c .config console log report ci-upstream-bpf-next-kasan-gce
* Struck through repros no longer work on HEAD.