syzbot


possible deadlock in ext4_xattr_set_handle

Status: upstream: reported on 2023/02/03 16:43
Labels: ext4 (incorrect?)
Reported-by: syzbot+d6789ced44b11ad1689a@syzkaller.appspotmail.com
First crash: 113d, last: 113d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in ext4_xattr_set_handle (3) ext4 C 392 1d17h 123d 0/24 upstream: reported C repro on 2023/01/25 00:27
upstream possible deadlock in ext4_xattr_set_handle 1 586d 582d 0/24 auto-closed as invalid on 2022/02/15 19:59
upstream possible deadlock in ext4_xattr_set_handle (2) 1 320d 320d 0/24 auto-obsoleted due to no activity on 2022/11/08 16:24
linux-5.15 possible deadlock in ext4_xattr_set_handle origin:upstream C 32 18d 81d 0/3 upstream: reported C repro on 2023/03/07 17:51
linux-6.1 possible deadlock in ext4_xattr_set_handle origin:upstream C 4 6d10h 77d 0/3 upstream: reported C repro on 2023/03/12 03:51

Sample crash report:
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop3): Unrecognized mount option "user_xattr'journal_async_commit" or missing value
overlayfs: unrecognized mount option "obj_type=omfs" or missing value
======================================================
overlayfs: unrecognized mount option "obj_type=omfs" or missing value
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.5/6715 is trying to acquire lock:
00000000d5f95e7e (&ei->xattr_sem){++++}, at: ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline]
00000000d5f95e7e (&ei->xattr_sem){++++}, at: ext4_xattr_set_handle+0x159/0x1030 fs/ext4/xattr.c:2330
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled

but task is already holding lock:
0000000099190aef (&ea_inode->i_rwsem#10/1){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
0000000099190aef (&ea_inode->i_rwsem#10/1){+.+.}, at: vfs_setxattr+0xc7/0x270 fs/xattr.c:254

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&ea_inode->i_rwsem#10/1){+.+.}:
       inode_lock include/linux/fs.h:748 [inline]
       ext4_xattr_inode_create fs/ext4/xattr.c:1459 [inline]
       ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1542 [inline]
       ext4_xattr_set_entry+0x2a10/0x3750 fs/ext4/xattr.c:1670
       ext4_xattr_block_set+0xf44/0x2eb0 fs/ext4/xattr.c:1966
       ext4_xattr_set_handle+0xa1f/0x1030 fs/ext4/xattr.c:2415
       ext4_xattr_set+0x135/0x2a0 fs/ext4/xattr.c:2515
       __vfs_setxattr+0x10e/0x170 fs/xattr.c:149
       __vfs_setxattr_noperm+0x11a/0x420 fs/xattr.c:180
       __vfs_setxattr_locked+0x176/0x250 fs/xattr.c:238
       vfs_setxattr+0xe5/0x270 fs/xattr.c:255
       setxattr+0x23d/0x330 fs/xattr.c:520
       path_setxattr+0x170/0x190 fs/xattr.c:539
       __do_sys_setxattr fs/xattr.c:554 [inline]
       __se_sys_setxattr fs/xattr.c:550 [inline]
       __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:550
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #0 (&ei->xattr_sem){++++}:
       down_write+0x34/0x90 kernel/locking/rwsem.c:70
       ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline]
       ext4_xattr_set_handle+0x159/0x1030 fs/ext4/xattr.c:2330
       ext4_xattr_set+0x135/0x2a0 fs/ext4/xattr.c:2515
       __vfs_setxattr+0x10e/0x170 fs/xattr.c:149
       __vfs_setxattr_noperm+0x11a/0x420 fs/xattr.c:180
       __vfs_setxattr_locked+0x176/0x250 fs/xattr.c:238
       vfs_setxattr+0xe5/0x270 fs/xattr.c:255
       setxattr+0x23d/0x330 fs/xattr.c:520
       path_setxattr+0x170/0x190 fs/xattr.c:539
       __do_sys_setxattr fs/xattr.c:554 [inline]
       __se_sys_setxattr fs/xattr.c:550 [inline]
       __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:550
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ea_inode->i_rwsem#10/1);
                               lock(&ei->xattr_sem);
                               lock(&ea_inode->i_rwsem#10/1);
  lock(&ei->xattr_sem);

 *** DEADLOCK ***

2 locks held by syz-executor.5/6715:
 #0: 00000000fb729fb3 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline]
 #0: 00000000fb729fb3 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360
 #1: 0000000099190aef (&ea_inode->i_rwsem#10/1){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #1: 0000000099190aef (&ea_inode->i_rwsem#10/1){+.+.}, at: vfs_setxattr+0xc7/0x270 fs/xattr.c:254

stack backtrace:
CPU: 0 PID: 6715 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222
 check_prev_add kernel/locking/lockdep.c:1866 [inline]
 check_prevs_add kernel/locking/lockdep.c:1979 [inline]
 validate_chain kernel/locking/lockdep.c:2420 [inline]
 __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 down_write+0x34/0x90 kernel/locking/rwsem.c:70
 ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline]
 ext4_xattr_set_handle+0x159/0x1030 fs/ext4/xattr.c:2330
 ext4_xattr_set+0x135/0x2a0 fs/ext4/xattr.c:2515
 __vfs_setxattr+0x10e/0x170 fs/xattr.c:149
 __vfs_setxattr_noperm+0x11a/0x420 fs/xattr.c:180
 __vfs_setxattr_locked+0x176/0x250 fs/xattr.c:238
 vfs_setxattr+0xe5/0x270 fs/xattr.c:255
 setxattr+0x23d/0x330 fs/xattr.c:520
 path_setxattr+0x170/0x190 fs/xattr.c:539
 __do_sys_setxattr fs/xattr.c:554 [inline]
 __se_sys_setxattr fs/xattr.c:550 [inline]
 __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:550
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f918c0d90c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f918a64b168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f918c1f8f80 RCX: 00007f918c0d90c9
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000000
RBP: 00007f918c134ae9 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000000000e2 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca5ee406f R14: 00007f918a64b300 R15: 0000000000022000
overlayfs: unrecognized mount option "obj_type=omfs" or missing value
overlayfs: unrecognized mount option "obj_type=omfs" or missing value
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "user_xattr-journal_async_commit" or missing value
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "user_xattrZjournal_async_commit" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (0)
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "user_xattrajournal_async_commit" or missing value
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (0)
Started in network mode
Own node identity 9, cluster identity 4711
EXT4-fs (loop3): Unrecognized mount option "journal_async_commit
" or missing value
32-bit node address hash set to 9
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "journal_async_commit" or missing value
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
EXT4-fs (loop3): Unrecognized mount option "journal_async_commit%" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "journal_async_commit'" or missing value
9pnet: Insufficient options for proto=fd
netlink: 'syz-executor.1': attribute type 4 has an invalid length.
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): Unrecognized mount option "journal_async_commit-" or missing value
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs (loop5): Unrecognized mount option "func=MMAP_CHECK" or missing value
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "journal_async_commitZ" or missing value
EXT4-fs (loop5): Unrecognized mount option "func=MMAP_CHECK" or missing value
MTD: Attempt to mount non-MTD device "/dev/md0"
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "journal_async_commita" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
MTD: Attempt to mount non-MTD device "/dev/md0"
EXT4-fs (loop5): Unrecognized mount option "func=MMAP_CHECK" or missing value
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
overlayfs: unrecognized mount option "" or missing value
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): can't mount with journal_checksum, fs mounted w/o journal
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): mounted filesystem without journal. Opts: quota,jqfmt=vfsv0,user_xattr,,errors=continue
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
overlayfs: unrecognized mount option "" or missing value
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
9pnet: Insufficient options for proto=fd
omfs: Invalid superblock (0)
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Journaled quota options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Journaled quota options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
EXT4-fs (loop4): Unrecognized mount option "quoTa" or missing value
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Journaled quota options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
EXT4-fs (loop4): Unrecognized mount option "quoTa" or missing value
omfs: Invalid superblock (0)
omfs: Invalid superblock (6c616b7a)
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Unrecognized mount option "quoTa" or missing value
EXT4-fs (loop3): Unrecognized mount option "" or missing value
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs error (device loop4): __ext4_new_inode:921: comm syz-executor.4: reserved inode found cleared - inode=1
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (10)
EXT4-fs (loop3): Unrecognized mount option "	" or missing value
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs error (device loop4): __ext4_new_inode:921: comm syz-executor.4: reserved inode found cleared - inode=1
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
omfs: Invalid superblock (405dbc44)
omfs: Invalid superblock (405dbc44)
omfs: Invalid superblock (405dbc44)
omfs: Invalid superblock (405dbc44)
omfs: Invalid superblock (405dbc44)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
omfs: Invalid superblock (0)
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs (loop3): Unrecognized mount option "" or missing value
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs error (device loop4): __ext4_new_inode:921: comm syz-executor.4: reserved inode found cleared - inode=1
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (0)
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (0)
EXT4-fs (loop3): Unrecognized mount option "" or missing value
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Unrecognized mount option "subj_role=ext4" or missing value
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
omfs: Invalid superblock (1)
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "" or missing value
EXT4-fs (loop4): Unrecognized mount option "subj_role=ext4" or missing value
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option """ or missing value
EXT4-fs (loop5): Unrecognized mount option "uer_xattr" or missing value
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Unrecognized mount option "subj_role=ext4" or missing value
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "#" or missing value
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Unrecognized mount option "uer_xattr" or missing value
omfs: Invalid superblock (0)
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "'" or missing value
omfs: Invalid superblock (0)
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Unrecognized mount option "uer_xattr" or missing value
EXT4-fs (loop3): Unrecognized mount option "-" or missing value
omfs: Invalid superblock (0)
omfs: Invalid superblock (0)
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Project quota feature not enabled. Cannot enable project quota enforcement.
EXT4-fs (loop3): Unrecognized mount option "." or missing value
omfs: Invalid superblock (0)
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Project quota feature not enabled. Cannot enable project quota enforcement.
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option ">" or missing value
omfs: Invalid superblock (0)
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Project quota feature not enabled. Cannot enable project quota enforcement.
omfs: Invalid superblock (ffffffff)
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Unrecognized mount option "`" or missing value
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (47f27044)
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
omfs: Invalid superblock (405dbc44)
omfs: Invalid superblock (0)
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
omfs: Invalid superblock (0)
9pnet: Insufficient options for proto=fd
omfs: Invalid superblock (0)
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): can't mount with journal_checksum, fs mounted w/o journal
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs error (device loop5): __ext4_new_inode:921: comm syz-executor.5: reserved inode found cleared - inode=1
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): can't mount with journal_checksum, fs mounted w/o journal
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop3): can't mount with journal_checksum, fs mounted w/o journal
EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled
EXT4-fs (loop5): Unrecognized mount option "'nore" or missing value

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/02/03 16:43 linux-4.19.y 3f8a27f9e27b 1b2f701a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 possible deadlock in ext4_xattr_set_handle
* Struck through repros no longer work on HEAD.