INFO: task kworker/1:65:7452 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:65    state:D stack:21032 pid:7452  ppid:2      flags:0x00004000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
 schedule+0xbd/0x170 kernel/sched/core.c:6773
 io_schedule+0x80/0xd0 kernel/sched/core.c:9022
 folio_wait_bit_common+0x6eb/0xf70 mm/filemap.c:1329
 folio_wait_locked include/linux/pagemap.h:1149 [inline]
 gfs2_jhead_process_page+0x17a/0x700 fs/gfs2/lops.c:477
 gfs2_find_jhead+0xbe5/0xd20 fs/gfs2/lops.c:594
 gfs2_recover_func+0x688/0x1c60 fs/gfs2/recovery.c:460
 process_one_work kernel/workqueue.c:2634 [inline]
 process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
INFO: task syz.6.501:8674 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.501       state:D stack:25160 pid:8674  ppid:8194   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
 schedule+0xbd/0x170 kernel/sched/core.c:6773
 bit_wait+0x11/0xd0 kernel/sched/wait_bit.c:199
 __wait_on_bit+0xac/0x2d0 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0x123/0x170 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_recover_journal+0xda/0x130 fs/gfs2/recovery.c:577
 init_journal+0x17c5/0x2260 fs/gfs2/ops_fstype.c:833
 init_inodes+0xdb/0x320 fs/gfs2/ops_fstype.c:886
 gfs2_fill_super+0x1815/0x1f80 fs/gfs2/ops_fstype.c:1266
 get_tree_bdev+0x3e4/0x510 fs/super.c:1591
 gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1344
 vfs_get_tree+0x8c/0x280 fs/super.c:1764
 do_new_mount+0x24b/0xa40 fs/namespace.c:3386
 do_mount fs/namespace.c:3726 [inline]
 __do_sys_mount fs/namespace.c:3935 [inline]
 __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa911190eea
RSP: 002b:00007fa9120fae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa9120faef0 RCX: 00007fa911190eea
RDX: 000020000001f680 RSI: 0000200000000180 RDI: 00007fa9120faeb0
RBP: 000020000001f680 R08: 00007fa9120faef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000180
R13: 00007fa9120faeb0 R14: 000000000001f84d R15: 0000200000000380
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:1/9:
2 locks held by kworker/u4:0/11:
 #0: ffff8880b8f3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
 #1: ffff8880b8f289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
 #1: ffff8880b8f289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x20ee/0x44d0 kernel/sched/core.c:6694
1 lock held by khungtaskd/29:
 #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by syslogd/5119:
 #0: ffff8880b8f3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
 #1: ffff8880b8f289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
 #1: ffff8880b8f289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x20ee/0x44d0 kernel/sched/core.c:6694
2 locks held by getty/5528:
 #0: ffff88802ccfd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217
2 locks held by kworker/1:65/7452:
 #0: ffff888141eb6538 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
 #0: ffff888141eb6538 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
 #1: ffffc900037c7d00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
 #1: ffffc900037c7d00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
1 lock held by syz.6.501/8674:
 #0: ffff88802e6900e0 (&type->s_umount_key#116){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88802e6900e0 (&type->s_umount_key#116){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88802e6900e0 (&type->s_umount_key#116){+.+.}-{3:3}, at: get_tree_bdev+0x344/0x510 fs/super.c:1589
3 locks held by syz.0.869/11218:

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf41/0xf80 kernel/hung_task.c:379
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11218 Comm: syz.0.869 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:dput+0x0/0x1e0 fs/dcache.c:900
Code: 28 00 74 08 48 89 df e8 8e 51 eb ff 80 4b 02 01 4c 89 f7 5b 41 5c 41 5d 41 5e 41 5f e9 c9 6c 7f 08 66 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 55 41 56 53 49 89 fe e8 70 e3 93 ff 4d 85 f6 0f 84 1f
RSP: 0018:ffffc9000e297978 EFLAGS: 00000293
RAX: ffffffff81ec7822 RBX: ffff88802b7ec000 RCX: ffff88807eeb9e00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888079fea178
RBP: ffff888140e7d3a0 R08: ffff888148c46587 R09: 1ffff11029188cb0
R10: dffffc0000000000 R11: ffffed1029188cb1 R12: ffff88802b7ec050
R13: dffffc0000000000 R14: 1ffff110056fd80a R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000cb30000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __fput+0x5e5/0x970 fs/file_table.c:392
 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x90b/0x23c0 kernel/exit.c:883
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1024
 get_signal+0x12fc/0x1400 kernel/signal.c:2902
 arch_do_signal_or_restart+0x9c/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4a8258f34b
Code: Unable to access opcode bytes at 0x7f4a8258f321.
RSP: 002b:00007f4a833eaf10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 000000000000000b RCX: 00007f4a8258f34b
RDX: 00007f4a833ebfe0 RSI: 0000000080085502 RDI: 000000000000000b
RBP: 00007f4a833ebfe0 R08: 0000000000000000 R09: 00302e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000080085502
R13: 0000000800000000 R14: 0000200000003100 R15: 00007f4a8261f52a
 </TASK>