INFO: task kworker/0:1H:52 blocked for more than 143 seconds.
      Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1H    state:D stack:27712 pid:52    ppid:2      flags:0x00004000
Workqueue: xfs-log/loop0 xlog_ioend_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x1d15/0x5790 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143
 ___down_common+0x2bf/0x430 kernel/locking/semaphore.c:225
 __down_common kernel/locking/semaphore.c:246 [inline]
 __down+0x20/0x30 kernel/locking/semaphore.c:254
 down+0x74/0xa0 kernel/locking/semaphore.c:63
 xfs_buf_lock+0x125/0x490 fs/xfs/xfs_buf.c:1119
 xfs_buf_item_unpin+0x536/0x870 fs/xfs/xfs_buf_item.c:547
 xfs_trans_committed_bulk+0x362/0x7c0 fs/xfs/xfs_trans.c:806
 xlog_cil_committed+0xd09/0x1090 fs/xfs/xfs_log_cil.c:795
 xlog_cil_process_committed+0x123/0x1f0 fs/xfs/xfs_log_cil.c:823
 xlog_state_shutdown_callbacks+0x1e3/0x370 fs/xfs/xfs_log.c:538
 xlog_force_shutdown+0x1e3/0x3f0 fs/xfs/xfs_log.c:3837
 xlog_ioend_work+0xe7/0x110 fs/xfs/xfs_log.c:1429
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2407
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2554
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task syz-executor260:5007 blocked for more than 143 seconds.
      Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor260 state:D stack:24808 pid:5007  ppid:5006   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x1d15/0x5790 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 xlog_wait fs/xfs/xfs_log_priv.h:617 [inline]
 xlog_wait_on_iclog+0x48f/0x6c0 fs/xfs/xfs_log.c:926
 xlog_force_lsn+0x6a6/0x910 fs/xfs/xfs_log.c:3372
 xfs_log_force_seq+0x1d5/0x4a0 fs/xfs/xfs_log.c:3409
 __xfs_trans_commit+0xb93/0xfa0 fs/xfs/xfs_trans.c:1014
 xfs_sync_sb_buf+0x126/0x170 fs/xfs/libxfs/xfs_sb.c:1112
 xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1801 [inline]
 xfs_file_ioctl+0x15ba/0x1c30 fs/xfs/xfs_ioctl.c:1899
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 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: 0033:0x7fbe6ad722c9
RSP: 002b:00007ffc178fee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbe6ad722c9
RDX: 0000000020000000 RSI: 0000000041009432 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fbe6adebec0 R09: 00007fbe6adebec0
R10: 00007fbe6adebec0 R11: 0000000000000246 R12: 00007ffc178fee50
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8c798530 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8c798230 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
 #0: ffffffff8c799140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6559
2 locks held by kworker/0:1H/52:
 #0: ffff88801678c538 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88801678c538 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88801678c538 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
 #0: ffff88801678c538 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
 #0: ffff88801678c538 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
 #0: ffff88801678c538 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2378
 #1: ffffc90000bd7db0 ((work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2382
2 locks held by getty/4759:
 #0: ffff8880297e8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor260/5007:
 #0: ffff888020aee460 (sb_writers#9){.+.+}-{0:0}, at: xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1783 [inline]
 #0: ffff888020aee460 (sb_writers#9){.+.+}-{0:0}, at: xfs_file_ioctl+0x1550/0x1c30 fs/xfs/xfs_ioctl.c:1899

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xe16/0x1090 kernel/hung_task.c:379
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x70 kernel/kcov.c:207
Code: 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 0d 98 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 c0 bb 03 00 <a9> 00 01 ff 00 74 0e 85 c9 74 35 8b 82 0c 16 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc90000b77a18 EFLAGS: 00000246
RAX: 0000000080000000 RBX: ffffc90000b77a88 RCX: 0000000000000000
RDX: ffff8880156c1dc0 RSI: ffffffff8a06377f RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: 000000000000000f R14: dffffc0000000000 R15: 1ffff9200016ef4b
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564364982680 CR3: 000000000c571000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 insn_complete arch/x86/lib/insn.c:721 [inline]
 insn_decode+0x1cf/0x3b0 arch/x86/lib/insn.c:751
 text_poke_loc_init+0xbc/0x4d0 arch/x86/kernel/alternative.c:2229
 arch_jump_label_transform_queue+0x98/0x100 arch/x86/kernel/jump_label.c:138
 __jump_label_update+0x12e/0x410 kernel/jump_label.c:475
 jump_label_update+0x32f/0x410 kernel/jump_label.c:829
 static_key_disable_cpuslocked+0x156/0x1b0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate mm/kfence/core.c:836 [inline]
 toggle_allocation_gate+0x143/0x230 mm/kfence/core.c:823
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2407
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2554
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.434 msecs