INFO: task syz-executor333:9386 blocked for more than 143 seconds.
Not tainted 6.2.0-rc4-next-20230120-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor333 state:D stack:26168 pid:9386 ppid:5125 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5301 [inline]
__schedule+0x25d0/0x5a70 kernel/sched/core.c:6619
schedule+0xde/0x1a0 kernel/sched/core.c:6695
io_schedule+0xbe/0x130 kernel/sched/core.c:8881
bit_wait_io+0x16/0xe0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0x11f/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0xd9/0x110 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:70 [inline]
lock_buffer include/linux/buffer_head.h:400 [inline]
__sync_dirty_buffer+0x30e/0x380 fs/buffer.c:2779
__ext4_handle_dirty_metadata+0x2b7/0x6f0 fs/ext4/ext4_jbd2.c:387
ext4_convert_inline_data_nolock+0x6e6/0xf10 fs/ext4/inline.c:1255
ext4_convert_inline_data+0x51a/0x5f0 fs/ext4/inline.c:2066
ext4_fallocate+0x19a/0x4470 fs/ext4/extents.c:4701
vfs_fallocate+0x48b/0xe40 fs/open.c:324
ioctl_preallocate+0x18e/0x200 fs/ioctl.c:290
file_ioctl fs/ioctl.c:335 [inline]
do_vfs_ioctl+0x129a/0x1600 fs/ioctl.c:849
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x10c/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7f8cca67b9
RSP: 002b:00007f7f8cc522f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7f8cd2b7a0 RCX: 00007f7f8cca67b9
RDX: 0000000020000000 RSI: 0000000040305839 RDI: 0000000000000004
RBP: 00007f7f8ccf883c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 5f646165726f6964
R13: 7272655f61746164 R14: 0030656c69662f2e R15: 00007f7f8cd2b7a8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c793b30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c793830 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:516
2 locks held by kworker/1:0/22:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2361
#1: ffffc900001c7da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2365
1 lock held by khungtaskd/28:
#0: ffffffff8c794700 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x2d4 kernel/locking/lockdep.c:6544
2 locks held by kworker/1:2/77:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2361
#1: ffffc900015e7da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2365
1 lock held by udevd/4440:
2 locks held by getty/4759:
#0: ffff888027583098 (&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor333/5124:
#0: ffffffff8c79f9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8c79f9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992
6 locks held by udevd/5156:
2 locks held by kworker/1:3/5159:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2361
#1: ffffc90003e8fda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2365
2 locks held by kworker/1:5/5465:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2361
#1: ffffc90004dbfda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2365
3 locks held by kworker/1:7/7443:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2361
#1: ffffc9000c3b7da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2365
#2: ffffffff8c79f9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#2: ffffffff8c79f9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992
3 locks held by syz-executor333/9386:
#0: ffff888017e00460 (sb_writers#4){.+.+}-{0:0}, at: ioctl_preallocate+0x18e/0x200 fs/ioctl.c:290
#1: ffff888077256850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff888077256850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x192/0x4470 fs/ext4/extents.c:4700
#2: ffff888077256518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888077256518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x352/0x5f0 fs/ext4/inline.c:2064
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc4-next-20230120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x32f/0x3c0 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+0xcae/0x1050 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 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: 20046 Comm: kworker/u4:6 Not tainted 6.2.0-rc4-next-20230120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:hash_64_generic include/linux/hash.h:78 [inline]
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3731 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3754 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3809 [inline]
RIP: 0010:__lock_acquire+0x16d0/0x5780 kernel/locking/lockdep.c:5073
Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 cb 35 91 e8 18 a9 6b 00 48 0f a3 1d 60 b4 d1 0f <48> bd eb 83 b5 80 46 86 c8 61 0f 92 c0 48 0f af 6c 24 08 48 c1 ed
RSP: 0018:ffffc900058e7990 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 00000000000000b8 RCX: ffffffff81641718
RDX: fffffbfff226b973 RSI: 0000000000000008 RDI: ffffffff9135cb90
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff9135cb97
R10: fffffbfff226b972 R11: 0000000000000000 R12: ffff888018898a88
R13: ffff888018898000 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555ab1628 CR3: 000000000c571000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire.part.0+0x11c/0x350 kernel/locking/lockdep.c:5690
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
prepare_to_wait_event+0x1f/0x6a0 kernel/sched/wait.c:310
toggle_allocation_gate mm/kfence/core.c:801 [inline]
toggle_allocation_gate+0x1c6/0x230 mm/kfence/core.c:791
process_one_work+0x9bf/0x1750 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308