INFO: task kworker/1:9:11474 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:9 state:D stack:22984 pid:11474 ppid:2 flags:0x00004000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
io_schedule+0x80/0xd0 kernel/sched/core.c:9023
folio_wait_bit_common+0x881/0xfa0 mm/filemap.c:1329
folio_wait_locked include/linux/pagemap.h:1149 [inline]
gfs2_jhead_process_page+0x17e/0x750 fs/gfs2/lops.c:477
gfs2_find_jhead+0xc84/0xdc0 fs/gfs2/lops.c:594
gfs2_recover_func+0x6cd/0x1c80 fs/gfs2/recovery.c:460
process_one_work kernel/workqueue.c:2653 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811
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
INFO: task syz.7.1382:12785 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1382 state:D stack:25192 pid:12785 ppid:10411 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
bit_wait+0x11/0xd0 kernel/sched/wait_bit.c:199
__wait_on_bit+0x9f/0x2c0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x13c/0x190 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+0x1838/0x22f0 fs/gfs2/ops_fstype.c:833
init_inodes+0xdb/0x320 fs/gfs2/ops_fstype.c:886
gfs2_fill_super+0x1828/0x1f90 fs/gfs2/ops_fstype.c:1266
get_tree_bdev+0x3e5/0x520 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+0x24a/0xa40 fs/namespace.c:3386
do_mount fs/namespace.c:3726 [inline]
__do_sys_mount fs/namespace.c:3935 [inline]
__se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc1ea79e0ca
RSP: 002b:00007fc1eb6c5e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc1eb6c5ee0 RCX: 00007fc1ea79e0ca
RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc1eb6c5ea0
RBP: 0000200000037f40 R08: 00007fc1eb6c5ee0 R09: 0000000000010000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000200000037f80
R13: 00007fc1eb6c5ea0 R14: 000000000003801e R15: 0000200000001040
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
1 lock held by acpid/5127:
#0: ffffffff8d137778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#0: ffffffff8d137778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3da/0x880 kernel/rcu/tree_exp.h:1004
2 locks held by getty/5533:
#0: ffff88814c7bc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x428/0x1370 drivers/tty/n_tty.c:2217
2 locks held by kworker/1:4/5820:
#0: ffff888017c72538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#0: ffff888017c72538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2730
#1: ffffc9000475fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#1: ffffc9000475fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2730
3 locks held by kworker/0:4/5821:
3 locks held by udevd/11303:
#0: ffff88805b799110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_close_device drivers/input/evdev.c:411 [inline]
#0: ffff88805b799110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_release+0x6fb/0x7f0 drivers/input/evdev.c:456
#1: ffff88805e44d2c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_close_device+0x4c/0x1d0 drivers/input/input.c:704
#2: ffffffff8d137778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#2: ffffffff8d137778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3da/0x880 kernel/rcu/tree_exp.h:1004
2 locks held by kworker/1:9/11474:
#0: ffff888018f03938 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#0: ffff888018f03938 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2730
#1: ffffc9000c40fd00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#1: ffffc9000c40fd00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2730
1 lock held by syz.7.1382/12785:
#0: ffff888078b100e0 (&type->s_umount_key#91){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888078b100e0 (&type->s_umount_key#91){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888078b100e0 (&type->s_umount_key#91){+.+.}-{3:3}, at: get_tree_bdev+0x345/0x520 fs/super.c:1589
2 locks held by syz-executor/12889:
1 lock held by syz.4.1591/13616:
#0: ffffffff8e3bfe48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e3bfe48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ed/0xf90 net/core/rtnetlink.c:6473
3 locks held by syz.4.1591/13624:
#0: ffff888144bbd158 (&mousedev->mutex/1){+.+.}-{3:3}, at: mixdev_close_devices+0x31/0x210 drivers/input/mousedev.c:486
#1: ffff888027061158 (&mousedev->mutex#2){+.+.}-{3:3}, at: mousedev_close_device drivers/input/mousedev.c:441 [inline]
#1: ffff888027061158 (&mousedev->mutex#2){+.+.}-{3:3}, at: mixdev_close_devices+0xba/0x210 drivers/input/mousedev.c:494
#2: ffff8880270602c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_close_device+0x4c/0x1d0 drivers/input/input.c:704
1 lock held by dhcpcd/13623:
#0: ffff88807446fa20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#0: ffff88807446fa20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
#0: ffff88807446fa20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x82/0x210 net/socket.c:1421
=============================================
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 05/09/2026
Call Trace:
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a6/0x3e0 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+0xf59/0xfa0 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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5766 Comm: kworker/0:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events_power_efficient gc_worker
RIP: 0010:mark_lock+0xe2/0x320 kernel/locking/lockdep.c:4656
Code: 03 42 0f b6 04 28 84 c0 0f 85 06 02 00 00 83 3d 93 72 c3 15 00 74 36 45 31 ff 49 83 c7 60 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 ff e8 b4 97 76 00 b8 01 00 00 00 45 85 27 74 50 48 83
RSP: 0018:ffffc900044cf8a0 EFLAGS: 00000046
RAX: 1ffffffff216bed6 RBX: ffff888028270000 RCX: ffffffff8168c1b4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff911bc590
RBP: 0000000000000002 R08: ffffffff911bc597 R09: 1ffffffff22378b2
R10: dffffc0000000000 R11: fffffbfff22378b3 R12: 0000000000000004
R13: dffffc0000000000 R14: ffff888028270b08 R15: ffffffff90b5f6b0
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563504e9a660 CR3: 0000000025d65000 CR4: 00000000003506f0
Call Trace:
mark_held_locks kernel/locking/lockdep.c:4274 [inline]
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x23b/0x7d0 kernel/locking/lockdep.c:4359
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
seqcount_lockdep_reader_access+0x12b/0x1d0 include/linux/seqlock.h:-1
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:350 [inline]
gc_worker+0x314/0x14a0 net/netfilter/nf_conntrack_core.c:1504
process_one_work kernel/workqueue.c:2653 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811
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