INFO: task kworker/0:1:14 blocked for more than 143 seconds.
Not tainted 6.2.0-rc3-syzkaller-00030-ge8f60cd7db24 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:19840 pid:14 ppid:2 flags:0x00004000
Workqueue: events_long flush_mdb
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
lock_buffer include/linux/buffer_head.h:397 [inline]
hfs_mdb_commit+0xacd/0xf80 fs/hfs/mdb.c:325
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xdab/0x1330 kernel/workqueue.c:2441
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.2:22339 blocked for more than 143 seconds.
Not tainted 6.2.0-rc3-syzkaller-00030-ge8f60cd7db24 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:18872 pid:22339 ppid:5113 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
schedule_timeout+0x98/0x2f0 kernel/time/timer.c:2143
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
__flush_work+0x110/0x190 kernel/workqueue.c:3073
flush_work kernel/workqueue.c:3094 [inline]
flush_delayed_work+0x132/0x180 kernel/workqueue.c:3218
hfs_file_fsync+0xe9/0x140 fs/hfs/inode.c:683
generic_write_sync include/linux/fs.h:2885 [inline]
generic_file_write_iter+0x29b/0x310 mm/filemap.c:3936
do_iter_write+0x6c2/0xc20 fs/read_write.c:861
vfs_writev fs/read_write.c:934 [inline]
do_pwritev+0x200/0x350 fs/read_write.c:1031
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: 0033:0x7f161fc8c0c9
RSP: 002b:00007f16209d8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f161fdabf80 RCX: 00007f161fc8c0c9
RDX: 0000000000000001 RSI: 0000000020000340 RDI: 0000000000000007
RBP: 00007f161fce7ae9 R08: 0000000000000000 R09: 0000000000000010
R10: 000000000000fc1d R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff85557e2f R14: 00007f16209d8300 R15: 0000000000022000
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
2 locks held by kworker/0:1/14:
#0: ffff888012871538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90000137d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by khungtaskd/28:
#0: ffffffff8d326d80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:4/75:
2 locks held by kworker/1:2/2270:
#0: ffff888012871538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000ab2fd00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by getty/4750:
#0: ffff88814a6ab098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.2/22339:
#0: ffff888030796460 (sb_writers#13){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline]
#0: ffff888030796460 (sb_writers#13){.+.+}-{0:0}, at: do_pwritev+0x1e9/0x350 fs/read_write.c:1031
#1: ffff88802e977128 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88802e977128 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: hfs_file_fsync+0x94/0x140 fs/hfs/inode.c:676
2 locks held by syz-executor.1/24531:
#0: ffff88802f756460 (sb_writers#13){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline]
#0: ffff88802f756460 (sb_writers#13){.+.+}-{0:0}, at: do_pwritev+0x1e9/0x350 fs/read_write.c:1031
#1: ffff8880211f8928 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880211f8928 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: hfs_file_fsync+0x94/0x140 fs/hfs/inode.c:676
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc3-syzkaller-00030-ge8f60cd7db24 #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5093 Comm: syz-fuzzer Not tainted 6.2.0-rc3-syzkaller-00030-ge8f60cd7db24 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0033:0x466a6b
Code: db f3 44 0f 6f 59 e0 f3 44 0f 6f 61 f0 c5 fe 6f 26 4c 01 de 48 29 c3 c5 fe 6f 06 c5 fe 6f 4e 20 c5 fe 6f 56 40 c5 fe 6f 5e 60 <48> 01 c6 c5 fd 7f 07 c5 fd 7f 4f 20 c5 fd 7f 57 40 c5 fd 7f 5f 60
RSP: 002b:000000c004432e00 EFLAGS: 00000206
RAX: 0000000000000080 RBX: 0000000000001db1 RCX: 000000c01bbd35d1
RDX: 000000000000a000 RSI: 000000c01bbd17a0 RDI: 000000c00a8a77a0
RBP: 000000c004432eb0 R08: 0000000000000020 R09: 0000000000000000
R10: 000000c00a8a0000 R11: 0000000000000020 R12: fca12564c3d5a62f
R13: 0000000000000000 R14: 000000c00156c000 R15: 0000000000000000
FS: 000000c00a6b7490 GS: 0000000000000000