Hello,
syzbot found the following issue on:
HEAD commit: 7d7d1c0a Linux 4.14.232
git tree: linux-4.14.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=16946c0dd00000
kernel config:
https://syzkaller.appspot.com/x/.config?x=17ee8a0e183900d8
dashboard link:
https://syzkaller.appspot.com/bug?extid=c4e3b86f4df6450bd8ce
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+c4e3b8...@syzkaller.appspotmail.com
EXT4-fs (loop5): unsupported descriptor size 0
EXT4-fs (loop1): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
======================================================
WARNING: possible circular locking dependency detected
4.14.232-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.0/23016 is trying to acquire lock:
(&dquot->dq_lock){+.+.}, at: [<ffffffff819d845d>] dquot_commit+0x4d/0x3a0 fs/quota/dquot.c:469
but task is already holding lock:
(&ei->i_data_sem/2){++++}, at: [<ffffffff81b9fc13>] ext4_map_blocks+0x623/0x1730 fs/ext4/inode.c:649
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&ei->i_data_sem/2){++++}:
down_read+0x36/0x80 kernel/locking/rwsem.c:24
ext4_map_blocks+0x29f/0x1730 fs/ext4/inode.c:577
ext4_getblk+0x98/0x3f0 fs/ext4/inode.c:992
ext4_bread+0x6c/0x1a0 fs/ext4/inode.c:1042
ext4_quota_write+0x1dd/0x490 fs/ext4/super.c:5880
write_blk+0x106/0x1e0 fs/quota/quota_tree.c:72
get_free_dqblk+0xf3/0x2a0 fs/quota/quota_tree.c:101
do_insert_tree+0x68d/0xfc0 fs/quota/quota_tree.c:308
do_insert_tree+0xdb4/0xfc0 fs/quota/quota_tree.c:339
do_insert_tree+0xdb4/0xfc0 fs/quota/quota_tree.c:339
do_insert_tree+0xdb4/0xfc0 fs/quota/quota_tree.c:339
dq_insert_tree fs/quota/quota_tree.c:365 [inline]
qtree_write_dquot+0x18a/0x4e0 fs/quota/quota_tree.c:384
v2_write_dquot+0x10f/0x240 fs/quota/quota_v2.c:359
dquot_acquire+0x220/0x470 fs/quota/dquot.c:436
ext4_acquire_dquot+0x1b8/0x290 fs/ext4/super.c:5538
dqget+0x6a0/0xe90 fs/quota/dquot.c:892
__dquot_initialize+0x2fb/0xa70 fs/quota/dquot.c:1466
ext4_xattr_set+0xaa/0x230 fs/ext4/xattr.c:2498
__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_setxattr fs/xattr.c:557 [inline]
SyS_setxattr+0x36/0x50 fs/xattr.c:553
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
-> #1 (&s->s_dquot.dqio_sem){++++}:
down_read+0x36/0x80 kernel/locking/rwsem.c:24
v2_read_dquot+0x49/0x120 fs/quota/quota_v2.c:333
dquot_acquire+0x10e/0x470 fs/quota/dquot.c:428
ext4_acquire_dquot+0x1b8/0x290 fs/ext4/super.c:5538
dqget+0x6a0/0xe90 fs/quota/dquot.c:892
__dquot_initialize+0x2fb/0xa70 fs/quota/dquot.c:1466
ext4_xattr_set+0xaa/0x230 fs/ext4/xattr.c:2498
__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_setxattr fs/xattr.c:557 [inline]
SyS_setxattr+0x36/0x50 fs/xattr.c:553
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
-> #0 (&dquot->dq_lock){+.+.}:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
dquot_commit+0x4d/0x3a0 fs/quota/dquot.c:469
ext4_write_dquot+0x1ac/0x240 fs/ext4/super.c:5522
ext4_mark_dquot_dirty+0xfe/0x190 fs/ext4/super.c:5573
mark_dquot_dirty fs/quota/dquot.c:341 [inline]
mark_all_dquot_dirty fs/quota/dquot.c:379 [inline]
__dquot_alloc_space+0x329/0x7b0 fs/quota/dquot.c:1698
dquot_alloc_space_nodirty include/linux/quotaops.h:295 [inline]
dquot_alloc_space include/linux/quotaops.h:308 [inline]
dquot_alloc_block include/linux/quotaops.h:332 [inline]
ext4_mb_new_blocks+0x4ac/0x3db0 fs/ext4/mballoc.c:4561
ext4_ext_map_blocks+0x2845/0x6b10 fs/ext4/extents.c:4499
ext4_map_blocks+0x675/0x1730 fs/ext4/inode.c:656
_ext4_get_block+0x187/0x480 fs/ext4/inode.c:809
__block_write_begin_int+0x35c/0x1090 fs/buffer.c:2038
ext4_write_begin+0x43e/0x1260 fs/ext4/inode.c:1344
ext4_da_write_begin+0x628/0xe70 fs/ext4/inode.c:3058
generic_perform_write+0x1c9/0x420 mm/filemap.c:3055
__generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
call_write_iter include/linux/fs.h:1778 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
vfs_write+0x17f/0x4d0 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xf2/0x210 fs/read_write.c:582
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
other info that might help us debug this:
Chain exists of:
&dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ei->i_data_sem/2);
lock(&s->s_dquot.dqio_sem);
lock(&ei->i_data_sem/2);
lock(&dquot->dq_lock);
*** DEADLOCK ***
5 locks held by syz-executor.0/23016:
#0: (&f->f_pos_lock){+.+.}, at: [<ffffffff818d39ab>] __fdget_pos+0x1fb/0x2b0 fs/file.c:769
#1: (sb_writers#3){.+.+}, at: [<ffffffff8186d758>] file_start_write include/linux/fs.h:2712 [inline]
#1: (sb_writers#3){.+.+}, at: [<ffffffff8186d758>] vfs_write+0x3d8/0x4d0 fs/read_write.c:543
#2: (&sb->s_type->i_mutex_key#10){++++}, at: [<ffffffff81b73a7c>] inode_trylock include/linux/fs.h:739 [inline]
#2: (&sb->s_type->i_mutex_key#10){++++}, at: [<ffffffff81b73a7c>] ext4_file_write_iter+0x1cc/0xd20 fs/ext4/file.c:236
#3: (&ei->i_data_sem/2){++++}, at: [<ffffffff81b9fc13>] ext4_map_blocks+0x623/0x1730 fs/ext4/inode.c:649
#4: (dquot_srcu){....}, at: [<ffffffff819e4a34>] i_dquot fs/quota/dquot.c:917 [inline]
#4: (dquot_srcu){....}, at: [<ffffffff819e4a34>] __dquot_alloc_space+0x184/0x7b0 fs/quota/dquot.c:1658
stack backtrace:
CPU: 0 PID: 23016 Comm: syz-executor.0 Not tainted 4.14.232-syzkaller #0
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+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
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
dquot_commit+0x4d/0x3a0 fs/quota/dquot.c:469
ext4_write_dquot+0x1ac/0x240 fs/ext4/super.c:5522
ext4_mark_dquot_dirty+0xfe/0x190 fs/ext4/super.c:5573
mark_dquot_dirty fs/quota/dquot.c:341 [inline]
mark_all_dquot_dirty fs/quota/dquot.c:379 [inline]
__dquot_alloc_space+0x329/0x7b0 fs/quota/dquot.c:1698
dquot_alloc_space_nodirty include/linux/quotaops.h:295 [inline]
dquot_alloc_space include/linux/quotaops.h:308 [inline]
dquot_alloc_block include/linux/quotaops.h:332 [inline]
ext4_mb_new_blocks+0x4ac/0x3db0 fs/ext4/mballoc.c:4561
ext4_ext_map_blocks+0x2845/0x6b10 fs/ext4/extents.c:4499
ext4_map_blocks+0x675/0x1730 fs/ext4/inode.c:656
_ext4_get_block+0x187/0x480 fs/ext4/inode.c:809
__block_write_begin_int+0x35c/0x1090 fs/buffer.c:2038
ext4_write_begin+0x43e/0x1260 fs/ext4/inode.c:1344
ext4_da_write_begin+0x628/0xe70 fs/ext4/inode.c:3058
generic_perform_write+0x1c9/0x420 mm/filemap.c:3055
__generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
call_write_iter include/linux/fs.h:1778 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
vfs_write+0x17f/0x4d0 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xf2/0x210 fs/read_write.c:582
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4665f9
RSP: 002b:00007f842b389188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 000000000d4ba0ff RSI: 00000000200009c0 RDI: 0000000000000005
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffe56f5fbdf R14: 00007f842b389300 R15: 0000000000022000
ieee80211 phy6: Selected rate control algorithm 'minstrel_ht'
EXT4-fs (loop5): unsupported descriptor size 0
EXT4-fs (loop1): re-mounted. Opts: (null)
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop0): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
ieee80211 phy6: hwaddr 02:00:00:00:06:00 registered
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop5): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop1): re-mounted. Opts: (null)
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop5): unsupported descriptor size 0
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop5): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop5): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): unsupported descriptor size 0
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop5): unsupported descriptor size 0
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): invalid first ino: 0
EXT4-fs (loop0): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): invalid first ino: 0
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop3): invalid first ino: 0
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop0): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs mount: 51 callbacks suppressed
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop0): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): fragment/cluster size (65536) != block size (4096)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop5): invalid first ino: 0
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'.
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'.
EXT4-fs (loop3): VFS: Can't find ext4 filesystem
EXT4-fs (loop5): invalid first ino: 0
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop5): invalid first ino: 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop0): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): unsupported descriptor size 0
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): unsupported descriptor size 0
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop3): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop0): re-mounted. Opts: (null)
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop3): re-mounted. Opts: (null)
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop3): re-mounted. Opts: (null)
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop5): fragment/cluster size (65536) != block size (4096)
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop3): re-mounted. Opts: (null)
EXT4-fs (loop1): VFS: Can't find ext4 filesystem
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
9pnet: Insufficient options for proto=fd
EXT4-fs (loop4): re-mounted. Opts: (null)
---
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