INFO: task kworker/1:12:4435 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:12    state:D stack:25936 pid: 4435 ppid:     2 flags:0x00004000
Workqueue: gfs_recovery gfs2_recover_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 io_schedule+0x7c/0xd0 kernel/sched/core.c:8503
 wait_on_page_bit_common+0x8bf/0xeb0 mm/filemap.c:1356
 wait_on_page_locked include/linux/pagemap.h:688 [inline]
 gfs2_jhead_process_page+0x252/0xbf0 fs/gfs2/lops.c:476
 gfs2_find_jhead+0xdaf/0xf00 fs/gfs2/lops.c:597
 gfs2_recover_func+0x73a/0x1cd0 fs/gfs2/recovery.c:462
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
INFO: task syz.5.77:4901 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.77        state:D stack:22224 pid: 4901 ppid:  4363 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 bit_wait+0xd/0xc0 kernel/sched/wait_bit.c:199
 __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
 out_of_line_wait_on_bit+0x173/0x230 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_recover_journal+0x104/0x150 fs/gfs2/recovery.c:579
 init_journal+0x17fa/0x22d0 fs/gfs2/ops_fstype.c:837
 init_inodes+0xdb/0x320 fs/gfs2/ops_fstype.c:891
 gfs2_fill_super+0x1671/0x1ea0 fs/gfs2/ops_fstype.c:1249
 get_tree_bdev+0x3e6/0x610 fs/super.c:1336
 gfs2_get_tree+0x4d/0x1e0 fs/gfs2/ops_fstype.c:1332
 vfs_get_tree+0x88/0x270 fs/super.c:1541
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbfb4d7d7ca
RSP: 002b:00007fbfb2fd2e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbfb2fd2ee0 RCX: 00007fbfb4d7d7ca
RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007fbfb2fd2ea0
RBP: 0000200000000180 R08: 00007fbfb2fd2ee0 R09: 0000000000000010
R10: 0000000000000010 R11: 0000000000000246 R12: 00002000000001c0
R13: 00007fbfb2fd2ea0 R14: 0000000000038011 R15: 0000200000000200
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3945:
 #0: ffff88814ca0a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc90002cf62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x594/0x1a50 drivers/tty/n_tty.c:2158
2 locks held by kworker/1:12/4435:
 #0: ffff88801ced1938 ((wq_completion)gfs_recovery){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1
 #1: ffffc900014ffd00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285
4 locks held by kworker/1:15/4439:
 #0: ffff8880b8f3a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x130 kernel/sched/core.c:475
 #1: ffffc9000453fd00 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((typeof(*((worker))) *)((worker))); (typeof((typeof(*((worker))) *)((worker)))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: psi_task_switch+0x517/0x810 kernel/sched/psi.c:891
 #2: ffff8880b8f27eb8 (krc.lock){..-.}-{2:2}, at: kfree_rcu_monitor+0x29/0x6e0 kernel/rcu/tree.c:3382
 #3: ffff8880b8f280d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x123/0x270 kernel/time/timer.c:946
1 lock held by syz.5.77/4901:
 #0: ffff888074d0a0e0 (&type->s_umount_key#65/1){+.+.}-{3:3}, at: alloc_super+0x200/0x970 fs/super.c:229

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xe1b/0xe60 kernel/hung_task.c:369
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__lock_acquire+0x156/0x7d40 kernel/locking/lockdep.c:4989
Code: 89 bc 24 c0 00 00 00 48 89 5c 24 20 41 83 fe 01 0f 87 11 01 00 00 44 89 f0 48 8d 5c c7 08 48 89 d8 48 c1 e8 03 42 80 3c 00 00 <74> 17 48 89 df e8 60 73 61 00 48 8b 7c 24 78 49 b8 00 00 00 00 00
RSP: 0018:ffffc90000d67760 EFLAGS: 00000046
RAX: 1ffff110171e746c RBX: ffff8880b8f3a360 RCX: 1ffff920001acf10
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b8f3a358
RBP: ffffc90000d679a8 R08: dffffc0000000000 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff1cda456 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005597fa6a3660 CR3: 000000002b8fc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737
 _raw_spin_lock_nested+0x2e/0x40 kernel/locking/spinlock.c:368
 raw_spin_rq_lock_nested+0x25/0x130 kernel/sched/core.c:475
 raw_spin_rq_lock kernel/sched/sched.h:1326 [inline]
 rq_lock kernel/sched/sched.h:1621 [inline]
 __schedule+0x316/0x4350 kernel/sched/core.c:6309
 schedule_idle+0x4a/0x90 kernel/sched/core.c:6506
 do_idle+0x606/0x650 kernel/sched/idle.c:355
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:424
 start_secondary+0x32f/0x430 arch/x86/kernel/smpboot.c:281
 secondary_startup_64_no_verify+0xb1/0xbb
 </TASK>