syzbot


possible deadlock in mnt_want_write

Status: upstream: reported C repro on 2019/04/25 05:09
Subsystems: ubifs
[Documentation on labels]
Reported-by: syzbot+662c18f543a2543ad297@syzkaller.appspotmail.com
First crash: 1887d, last: 475d
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 possible deadlock in mnt_want_write origin:upstream missing-backport C done 117 208d 461d 0/3 upstream: reported C repro on 2023/03/21 10:01
upstream possible deadlock in mnt_want_write fs C done done 662 1355d 2162d 15/27 fixed on 2020/11/16 12:12
linux-6.1 possible deadlock in mnt_want_write origin:upstream missing-backport C done 56 209d 453d 0/3 upstream: reported C repro on 2023/03/28 13:05
linux-4.19 possible deadlock in mnt_want_write romfs C 730 475d 1892d 0/1 upstream: reported C repro on 2019/04/19 16:54
android-49 possible deadlock in mnt_want_write 1 2145d 2145d 0/3 auto-closed as invalid on 2019/02/22 14:57
upstream possible deadlock in mnt_want_write (2) integrity overlayfs C done 867 236d 1104d 25/27 fixed on 2023/12/21 01:43
upstream possible deadlock in mnt_want_write (3) kernfs 9 71d 175d 0/27 upstream: reported on 2024/01/01 07:31
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2021/08/06 04:04 25m bisect fix linux-4.14.y job log (0) log
2020/05/19 11:53 25m bisect fix linux-4.14.y job log (0) log

Sample crash report:
======================================================
WARNING: possible circular locking dependency detected
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
4.14.300-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor380/21227 is trying to acquire lock:
 (sb_writers#3){.+.+}, at: [<ffffffff818e1bca>] sb_start_write include/linux/fs.h:1551 [inline]
 (sb_writers#3){.+.+}, at: [<ffffffff818e1bca>] mnt_want_write+0x3a/0xb0 fs/namespace.c:386

but task is already holding lock:
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
 (&ovl_i_mutex_dir_key[depth]#2){++++}, at: [<ffffffff818f4f11>] inode_lock include/linux/fs.h:719 [inline]
 (&ovl_i_mutex_dir_key[depth]#2){++++}, at: [<ffffffff818f4f11>] vfs_setxattr+0xb1/0x230 fs/xattr.c:255

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&ovl_i_mutex_dir_key[depth]#2){++++}:
       down_read+0x36/0x80 kernel/locking/rwsem.c:24
       inode_lock_shared include/linux/fs.h:729 [inline]
       lookup_slow+0x129/0x400 fs/namei.c:1674
       lookup_one_len_unlocked+0x3a0/0x410 fs/namei.c:2595
       ovl_lower_positive+0x184/0x350 fs/overlayfs/namei.c:783
       ovl_rename+0x47c/0xe50 fs/overlayfs/dir.c:968
       vfs_rename+0x560/0x1820 fs/namei.c:4498
       SYSC_renameat2 fs/namei.c:4646 [inline]
       SyS_renameat2+0x95b/0xad0 fs/namei.c:4535
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

-> #1 (&oi->lock){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       ovl_copy_up_start+0x40/0xe0 fs/overlayfs/util.c:318
       ovl_copy_up_one+0x21f/0x910 fs/overlayfs/copy_up.c:631
       ovl_copy_up_flags+0xd5/0x120 fs/overlayfs/copy_up.c:686
       ovl_rename+0x1a6/0xe50 fs/overlayfs/dir.c:943
       vfs_rename+0x560/0x1820 fs/namei.c:4498
       SYSC_renameat2 fs/namei.c:4646 [inline]
       SyS_renameat2+0x95b/0xad0 fs/namei.c:4535
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

-> #0 (sb_writers#3){.+.+}:
       lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
       percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
       percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
       __sb_start_write+0x64/0x260 fs/super.c:1342
       sb_start_write include/linux/fs.h:1551 [inline]
       mnt_want_write+0x3a/0xb0 fs/namespace.c:386
       ovl_xattr_set+0x4d/0x290 fs/overlayfs/inode.c:214
       __vfs_setxattr+0xdc/0x130 fs/xattr.c:150
       __vfs_setxattr_noperm+0xfd/0x3d0 fs/xattr.c:181
       __vfs_setxattr_locked+0x14d/0x250 fs/xattr.c:239
       vfs_setxattr+0xcf/0x230 fs/xattr.c:256
       setxattr+0x1a9/0x300 fs/xattr.c:523
       path_setxattr+0x118/0x130 fs/xattr.c:542
       SYSC_lsetxattr fs/xattr.c:564 [inline]
       SyS_lsetxattr+0x33/0x40 fs/xattr.c:560
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

other info that might help us debug this:

Chain exists of:
  sb_writers#3 --> &oi->lock --> &ovl_i_mutex_dir_key[depth]#2

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ovl_i_mutex_dir_key[depth]#2);
                               lock(&oi->lock);
                               lock(&ovl_i_mutex_dir_key[depth]#2);
  lock(sb_writers#3);

 *** DEADLOCK ***

2 locks held by syz-executor380/21227:
 #0:  (sb_writers#13){.+.+}, at: [<ffffffff818e1bca>] sb_start_write include/linux/fs.h:1551 [inline]
 #0:  (sb_writers#13){.+.+}, at: [<ffffffff818e1bca>] mnt_want_write+0x3a/0xb0 fs/namespace.c:386
 #1:  (&ovl_i_mutex_dir_key[depth]#2){++++}, at: [<ffffffff818f4f11>] inode_lock include/linux/fs.h:719 [inline]
 #1:  (&ovl_i_mutex_dir_key[depth]#2){++++}, at: [<ffffffff818f4f11>] vfs_setxattr+0xb1/0x230 fs/xattr.c:255

stack backtrace:
CPU: 0 PID: 21227 Comm: syz-executor380 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258
 check_prev_add kernel/locking/lockdep.c:1905 [inline]
 check_prevs_add kernel/locking/lockdep.c:2022 [inline]
 validate_chain kernel/locking/lockdep.c:2464 [inline]
 __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
 percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
 __sb_start_write+0x64/0x260 fs/super.c:1342
 sb_start_write include/linux/fs.h:1551 [inline]
 mnt_want_write+0x3a/0xb0 fs/namespace.c:386
 ovl_xattr_set+0x4d/0x290 fs/overlayfs/inode.c:214
 __vfs_setxattr+0xdc/0x130 fs/xattr.c:150
 __vfs_setxattr_noperm+0xfd/0x3d0 fs/xattr.c:181
 __vfs_setxattr_locked+0x14d/0x250 fs/xattr.c:239
 vfs_setxattr+0xcf/0x230 fs/xattr.c:256
 setxattr+0x1a9/0x300 fs/xattr.c:523
 path_setxattr+0x118/0x130 fs/xattr.c:542
 SYSC_lsetxattr fs/xattr.c:564 [inline]
 SyS_lsetxattr+0x33/0x40 fs/xattr.c:560
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
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overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off.

Crashes (10467):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/12/06 14:35 linux-4.14.y 179ef7fe8677 045cbb84 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2022/11/05 10:28 linux-4.14.y a901bb6c7db7 6d752409 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2022/10/11 08:55 linux-4.14.y 9d5c0b3a8e1a 5bcf0c31 .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in mnt_want_write
2022/07/02 23:19 linux-4.14.y ed2e96e11936 1434eec0 .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/10/31 00:07 linux-4.14.y cd5296934610 098b5d53 .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/09/23 15:11 linux-4.14.y 8ea4f73cfa7e 8cac236e .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/09/18 12:44 linux-4.14.y f96eb53cbd76 70b76c1d .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/08/24 14:51 linux-4.14.y 162b95d01320 b599f2fc .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/06/28 07:27 linux-4.14.y cfb41ef9deb1 9d2ab5df .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/06/22 18:41 linux-4.14.y cfb41ef9deb1 aba2b2fb .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/06/21 03:33 linux-4.14.y cfb41ef9deb1 aba2b2fb .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/05/16 20:26 linux-4.14.y 7d7d1c0ab3eb f54a5c09 .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2021/05/05 05:36 linux-4.14.y 7d7d1c0ab3eb 06c27ff5 .config console log report syz C ci2-linux-4-14 possible deadlock in mnt_want_write
2020/12/01 08:25 linux-4.14.y 87335852c5d9 b3a34598 .config console log report syz C ci2-linux-4-14
2020/12/01 07:45 linux-4.14.y 87335852c5d9 b3a34598 .config console log report syz C ci2-linux-4-14
2020/11/02 20:04 linux-4.14.y 2b7915014161 8bc4594f .config console log report syz C ci2-linux-4-14
2020/10/16 04:36 linux-4.14.y cbfa1702aaf6 6e262c73 .config console log report syz C ci2-linux-4-14
2020/10/09 19:59 linux-4.14.y cbfa1702aaf6 fa79ed2a .config console log report syz C ci2-linux-4-14
2020/10/09 15:08 linux-4.14.y cbfa1702aaf6 fa79ed2a .config console log report syz C ci2-linux-4-14
2020/10/08 01:46 linux-4.14.y cbfa1702aaf6 1880b4a9 .config console log report syz C ci2-linux-4-14
2020/10/04 01:50 linux-4.14.y cbfa1702aaf6 1a3f9408 .config console log report syz C ci2-linux-4-14
2020/09/27 21:55 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz C ci2-linux-4-14
2020/09/27 19:41 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz C ci2-linux-4-14
2020/09/27 19:20 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz C ci2-linux-4-14
2020/09/27 07:42 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz C ci2-linux-4-14
2020/09/27 03:13 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz C ci2-linux-4-14
2020/09/26 22:45 linux-4.14.y cbfa1702aaf6 2d5ea0cb .config console log report syz C ci2-linux-4-14
2020/05/22 11:25 linux-4.14.y a41ba30d9df2 4afdfa20 .config console log report syz C ci2-linux-4-14
2023/03/06 04:41 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/01/08 17:49 linux-4.14.y c4215ee4771b 1dac8c7a .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2022/12/07 20:25 linux-4.14.y 179ef7fe8677 d88f3abb .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2022/05/12 04:49 linux-4.14.y e3a56aaade89 beb0b407 .config console log report syz ci2-linux-4-14 possible deadlock in mnt_want_write
2021/11/01 00:45 linux-4.14.y cd5296934610 098b5d53 .config console log report syz ci2-linux-4-14 possible deadlock in mnt_want_write
2021/07/03 19:42 linux-4.14.y 313e82bbefb3 55aa55c2 .config console log report syz ci2-linux-4-14 possible deadlock in mnt_want_write
2021/03/29 03:10 linux-4.14.y 670d6552eda8 a8529b82 .config console log report syz ci2-linux-4-14 possible deadlock in mnt_want_write
2021/01/27 02:04 linux-4.14.y 2d2791fce891 55a7d4df .config console log report syz ci2-linux-4-14 possible deadlock in mnt_want_write
2021/01/25 20:54 linux-4.14.y 2d2791fce891 52e37319 .config console log report syz ci2-linux-4-14 possible deadlock in mnt_want_write
2020/12/12 21:59 linux-4.14.y 3f2ecb86cb90 bca53db9 .config console log report syz ci2-linux-4-14
2020/10/09 22:52 linux-4.14.y cbfa1702aaf6 93817d89 .config console log report syz ci2-linux-4-14
2020/10/07 20:29 linux-4.14.y cbfa1702aaf6 1880b4a9 .config console log report syz ci2-linux-4-14
2020/09/27 21:30 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz ci2-linux-4-14
2020/09/27 07:21 linux-4.14.y cbfa1702aaf6 5dd8aee8 .config console log report syz ci2-linux-4-14
2020/09/26 18:57 linux-4.14.y cbfa1702aaf6 2d5ea0cb .config console log report syz ci2-linux-4-14
2019/08/10 18:44 linux-4.14.y 3ffe1e79c174 acb51638 .config console log report syz ci2-linux-4-14
2019/06/20 21:19 linux-4.14.y bb263a2a2d43 34bf9440 .config console log report syz ci2-linux-4-14
2023/03/07 04:21 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/06 18:10 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/06 16:56 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/05 19:48 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/04 03:55 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/02 07:00 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/02 02:23 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/01 22:07 linux-4.14.y 7878a41b6cc1 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/01 13:52 linux-4.14.y 7878a41b6cc1 ef65e6cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/01 09:51 linux-4.14.y 7878a41b6cc1 ef65e6cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/03/01 08:31 linux-4.14.y 7878a41b6cc1 ef65e6cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/28 20:49 linux-4.14.y 7878a41b6cc1 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/28 18:16 linux-4.14.y 7878a41b6cc1 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/28 07:40 linux-4.14.y 7878a41b6cc1 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/28 03:09 linux-4.14.y 7878a41b6cc1 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/28 00:24 linux-4.14.y 7878a41b6cc1 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/27 22:04 linux-4.14.y 7878a41b6cc1 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/27 11:47 linux-4.14.y 7878a41b6cc1 9189cb53 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/27 10:00 linux-4.14.y 7878a41b6cc1 9189cb53 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/27 08:18 linux-4.14.y 7878a41b6cc1 9189cb53 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/26 14:05 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/26 03:20 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/26 01:55 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/25 22:16 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/25 21:03 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/25 16:39 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/25 15:21 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/25 12:39 linux-4.14.y 7878a41b6cc1 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/24 14:12 linux-4.14.y 1e61bd26fa2c ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/24 10:45 linux-4.14.y 1e61bd26fa2c ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/24 10:40 linux-4.14.y 1e61bd26fa2c ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/23 15:22 linux-4.14.y 1e61bd26fa2c 9e2ebb3c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/23 13:52 linux-4.14.y 1e61bd26fa2c 9e2ebb3c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/23 11:32 linux-4.14.y 1e61bd26fa2c 9e2ebb3c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/22 19:33 linux-4.14.y 1e61bd26fa2c 9f1e2cb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/22 18:03 linux-4.14.y 1e61bd26fa2c 9f1e2cb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/22 16:18 linux-4.14.y 1e61bd26fa2c 9f1e2cb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/22 13:28 linux-4.14.y 1e61bd26fa2c 42a4d508 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 22:22 linux-4.14.y a8ad60f2af58 42a4d508 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 21:04 linux-4.14.y a8ad60f2af58 42a4d508 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 19:52 linux-4.14.y a8ad60f2af58 42a4d508 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 12:31 linux-4.14.y a8ad60f2af58 f949448d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 11:21 linux-4.14.y a8ad60f2af58 f949448d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 09:44 linux-4.14.y a8ad60f2af58 f949448d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 08:40 linux-4.14.y a8ad60f2af58 f949448d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2023/02/21 07:16 linux-4.14.y a8ad60f2af58 f949448d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in mnt_want_write
2021/01/17 11:41 linux-4.14.y f79dc86058bc 813be542 .config console log report info ci2-linux-4-14
2019/04/25 04:09 linux-4.14.y 68d7a45eec10 8e3c52b1 .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.