EXT4-fs (loop0): mounted filesystem without journal. Opts: usrquota,i_version,,errors=continue
EXT4-fs (loop1): mounted filesystem without journal. Opts: usrquota,i_version,,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: usrquota,i_version,,errors=continue
INFO: task syz-executor360:18194 blocked for more than 140 seconds.
Not tainted 4.14.302-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
EXT4-fs (loop0): mounted filesystem without journal. Opts: usrquota,i_version,,errors=continue
syz-executor360 D27608 18194 8013 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
io_schedule+0xb5/0x120 kernel/sched/core.c:5035
bit_wait_io+0x12/0x90 kernel/sched/wait_bit.c:249
__wait_on_bit_lock+0xc2/0x1d0 kernel/sched/wait_bit.c:89
out_of_line_wait_on_bit_lock+0xbc/0xd0 kernel/sched/wait_bit.c:116
wait_on_bit_lock_io include/linux/wait_bit.h:213 [inline]
__lock_buffer+0x43/0x50 fs/buffer.c:72
lock_buffer include/linux/buffer_head.h:408 [inline]
__sync_dirty_buffer+0x214/0x290 fs/buffer.c:3235
__ext4_handle_dirty_metadata+0x169/0x480 fs/ext4/ext4_jbd2.c:300
ext4_finish_convert_inline_dir fs/ext4/inline.c:1190 [inline]
ext4_convert_inline_data_nolock+0x8d8/0xc60 fs/ext4/inline.c:1266
ext4_try_add_inline_entry+0x2a5/0x4a0 fs/ext4/inline.c:1339
ext4_add_entry+0x2ee/0xa40 fs/ext4/namei.c:2138
ext4_mkdir+0x5cf/0xbd0 fs/ext4/namei.c:2732
vfs_mkdir+0x463/0x6e0 fs/namei.c:3851
SYSC_mkdirat fs/namei.c:3874 [inline]
SyS_mkdirat+0x1fd/0x270 fs/namei.c:3858
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f82aa844859
RSP: 002b:00007f82aa7f02f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f82aa8ca780 RCX: 00007f82aa844859
RDX: 00007f82aa844859 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f82aa8977a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000073 R11: 0000000000000246 R12: 7261637369646f6e
R13: 0030656c69662f2e R14: 6569727261626f6e R15: 00007f82aa8ca788
Showing all locks held in the system:
1 lock held by khungtaskd/1533:
#0: (tasklist_lock){.+.+}, at: [<ffffffff8702b3a4>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
3 locks held by syz-executor360/18194:
#0: (sb_writers#3){.+.+}, at: [<ffffffff818e1ffa>] sb_start_write include/linux/fs.h:1551 [inline]
#0: (sb_writers#3){.+.+}, at: [<ffffffff818e1ffa>] mnt_want_write+0x3a/0xb0 fs/namespace.c:386
#1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [<ffffffff818a98ca>] inode_lock_nested include/linux/fs.h:754 [inline]
#1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [<ffffffff818a98ca>] filename_create+0x12a/0x3f0 fs/namei.c:3676
#2: (&ei->xattr_sem){++++}, at: [<ffffffff81b9a432>] ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
#2: (&ei->xattr_sem){++++}, at: [<ffffffff81b9a432>] ext4_try_add_inline_entry+0xc2/0x4a0 fs/ext4/inline.c:1297
3 locks held by syz-executor360/23792:
#0: (sb_writers#3){.+.+}, at: [<ffffffff818e1ffa>] sb_start_write include/linux/fs.h:1551 [inline]
#0: (sb_writers#3){.+.+}, at: [<ffffffff818e1ffa>] mnt_want_write+0x3a/0xb0 fs/namespace.c:386
#1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [<ffffffff818a98ca>] inode_lock_nested include/linux/fs.h:754 [inline]
#1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [<ffffffff818a98ca>] filename_create+0x12a/0x3f0 fs/namei.c:3676
#2: (&ei->xattr_sem){++++}, at: [<ffffffff81b9a432>] ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
#2: (&ei->xattr_sem){++++}, at: [<ffffffff81b9a432>] ext4_try_add_inline_entry+0xc2/0x4a0 fs/ext4/inline.c:1297
3 locks held by syz-executor360/30187:
#0: (sb_writers#3){.+.+}, at: [<ffffffff818e1ffa>] sb_start_write include/linux/fs.h:1551 [inline]
#0: (sb_writers#3){.+.+}, at: [<ffffffff818e1ffa>] mnt_want_write+0x3a/0xb0 fs/namespace.c:386
#1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [<ffffffff818a98ca>] inode_lock_nested include/linux/fs.h:754 [inline]
#1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [<ffffffff818a98ca>] filename_create+0x12a/0x3f0 fs/namei.c:3676
#2: (&ei->xattr_sem){++++}, at: [<ffffffff81b9a432>] ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline]
#2: (&ei->xattr_sem){++++}, at: [<ffffffff81b9a432>] ext4_try_add_inline_entry+0xc2/0x4a0 fs/ext4/inline.c:1297
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-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
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8724bc2e