INFO: task syz-executor376:5297 blocked for more than 143 seconds.
Not tainted 6.2.0-rc2-syzkaller-00313-g9b43a525db12 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor376 state:D stack:21248 pid:5297 ppid:5066 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
io_schedule+0x83/0x100 kernel/sched/core.c:8811
bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbb/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1c3/0x240 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:69 [inline]
lock_buffer include/linux/buffer_head.h:397 [inline]
__sync_dirty_buffer+0x107/0x330 fs/buffer.c:2732
__ext4_handle_dirty_metadata+0x29a/0x810 fs/ext4/ext4_jbd2.c:387
ext4_handle_dirty_dirblock+0x363/0x6b0 fs/ext4/namei.c:438
ext4_finish_convert_inline_dir+0x58a/0x700 fs/ext4/inline.c:1181
ext4_convert_inline_data_nolock+0x639/0x820 fs/ext4/inline.c:1258
ext4_try_add_inline_entry+0x683/0x990 fs/ext4/inline.c:1331
ext4_add_entry+0x5a4/0xeb0 fs/ext4/namei.c:2385
ext4_mkdir+0x557/0xcf0 fs/ext4/namei.c:3007
vfs_mkdir+0x3b3/0x590 fs/namei.c:4036
do_mkdirat+0x25b/0x530 fs/namei.c:4061
__do_sys_mkdir fs/namei.c:4081 [inline]
__se_sys_mkdir fs/namei.c:4079 [inline]
__x64_sys_mkdir+0x6a/0x80 fs/namei.c:4079
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f72a380b759
RSP: 002b:00007f72a37b72f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f72a3891780 RCX: 00007f72a380b759
RDX: 00007f72a380b759 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f72a385e780 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000073 R11: 0000000000000246 R12: 7261637369646f6e
R13: 0030656c69662f2e R14: 6569727261626f6e R15: 00007f72a3891788
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326f50 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327750 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326d80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4743:
#0: ffff8880295d0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
3 locks held by syz-executor376/5297:
#0: ffff88802b414460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#1: ffff88807312ac20 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff88807312ac20 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x22a/0x4f0 fs/namei.c:3807
#2: ffff88807312a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88807312a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xe1/0x990 fs/ext4/inline.c:1289
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-00313-g9b43a525db12 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc2-syzkaller-00313-g9b43a525db12 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:check_preemption_disabled+0x14/0x110 lib/smp_processor_id.c:13
Code: ff cc cc cc cc cc 48 c7 c7 c0 c3 4b 8b 48 c7 c6 00 c4 4b 8b eb 00 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 <48> 89 44 24 08 65 8b 1d ec 31 52 75 65 8b 05 e1 31 52 75 a9 ff ff
RSP: 0018:ffffc90000177ac8 EFLAGS: 00000082
RAX: 1b54913549c15100 RBX: ffffc90000177b90 RCX: 0000000000177b03
RDX: 0000000000000000 RSI: ffffffff8aedcd60 RDI: ffffffff8b4bc420
RBP: ffffc90000177c30 R08: dffffc0000000000 R09: fffffbfff1d2cdfe
R10: fffffbfff1d2cdfe R11: 1ffffffff1d2cdfd R12: dffffc0000000000
R13: ffff888012af2778 R14: 1ffff9200002ef6c R15: 0000000000000046
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005571c2f5fdc8 CR3: 00000000207b2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline]
lock_release+0x54c/0x820 kernel/locking/lockdep.c:5690
seqcount_lockdep_reader_access+0xf2/0x1f0 include/linux/seqlock.h:103
timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
ktime_get+0x95/0x2b0 kernel/time/timekeeping.c:848
tick_nohz_start_idle kernel/time/tick-sched.c:672 [inline]
tick_nohz_idle_enter+0x1cc/0x2e0 kernel/time/tick-sched.c:1160
do_idle+0xb0/0x640 kernel/sched/idle.c:277
cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400
start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:264
secondary_startup_64_no_verify+0xcf/0xdb