INFO: task kworker/0:3:1226 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:24696 pid:1226 tgid:1226 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
context_switch kernel/sched/core.c:5290 [inline]
__schedule+0x14db/0x5030 kernel/sched/core.c:6902
__schedule_loop kernel/sched/core.c:6984 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6999
io_schedule+0x80/0xd0 kernel/sched/core.c:7828
folio_wait_bit_common+0x6b0/0xb80 mm/filemap.c:1323
folio_wait_locked include/linux/pagemap.h:1245 [inline]
gfs2_jhead_process_page+0x171/0x650 fs/gfs2/lops.c:470
gfs2_find_jhead+0xbd2/0xd30 fs/gfs2/lops.c:586
gfs2_recover_func+0x5f5/0x1c90 fs/gfs2/recovery.c:459
process_one_work+0x93a/0x15a0 kernel/workqueue.c:3279
process_scheduled_works kernel/workqueue.c:3362 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3443
kthread+0x389/0x480 kernel/kthread.c:467
ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz.0.17:6512 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17 state:D stack:24600 pid:6512 tgid:6511 ppid:6351 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5290 [inline]
__schedule+0x14db/0x5030 kernel/sched/core.c:6902
__schedule_loop kernel/sched/core.c:6984 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6999
bit_wait+0x11/0xd0 kernel/sched/wait_bit.c:240
__wait_on_bit+0xb9/0x310 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0x123/0x170 kernel/sched/wait_bit.c:67
wait_on_bit include/linux/wait_bit.h:77 [inline]
gfs2_recover_journal+0xda/0x140 fs/gfs2/recovery.c:579
init_journal+0x1977/0x2170 fs/gfs2/ops_fstype.c:794
init_inodes+0xdb/0x320 fs/gfs2/ops_fstype.c:844
gfs2_fill_super+0x1a08/0x21b0 fs/gfs2/ops_fstype.c:1250
get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1691
gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x92/0x2a0 fs/super.c:1751
fc_mount fs/namespace.c:1204 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x31a/0xcf0 fs/namespace.c:3839
do_mount fs/namespace.c:4162 [inline]
__do_sys_mount fs/namespace.c:4351 [inline]
__se_sys_mount+0x313/0x410 fs/namespace.c:4328
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe7fcf9038a
RSP: 002b:00007fe7fddbae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe7fddbaef0 RCX: 00007fe7fcf9038a
RDX: 000020000001f680 RSI: 0000200000000040 RDI: 00007fe7fddbaeb0
RBP: 000020000001f680 R08: 00007fe7fddbaef0 R09: 0000000000000084
R10: 0000000000000084 R11: 0000000000000246 R12: 0000200000000040
R13: 00007fe7fddbaeb0 R14: 000000000001f790 R15: 00002000000001c0
Showing all locks held in the system:
1 lock held by ksoftirqd/1/23:
#0: ffff8880b873abe0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 kernel/sched/core.c:647
1 lock held by khungtaskd/31:
#0: ffffffff8e144ce0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
#0: ffffffff8e144ce0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
#0: ffffffff8e144ce0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
4 locks held by kworker/u8:4/59:
#0: ffff8880b863abe0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 kernel/sched/core.c:647
#1: ffff8880b8624588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
#2: ffff8880b8626118 (&base->lock){-.-.}-{2:2}, at: lock_timer_base kernel/time/timer.c:1004 [inline]
#2: ffff8880b8626118 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x1ae/0xf30 kernel/time/timer.c:1085
#3: ffffffff8e144ce0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
#3: ffffffff8e144ce0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
#3: ffffffff8e144ce0 (rcu_read_lock){....}-{1:3}, at: ieee80211_sta_active_ibss+0xc3/0x330 net/mac80211/ibss.c:635
2 locks held by kworker/0:3/1226:
#0:
ffff8881442cc948 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3254
#1: ffffc90003f9fc40 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3255
2 locks held by kworker/u8:12/3474:
#0: ffff8880b863abe0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 kernel/sched/core.c:647
#1: ffff8880b8624588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
2 locks held by getty/5583:
#0: ffff88814d8970a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
1 lock held by syz.0.17/6512:
#0: ffff8880540f80e0 (&type->s_umount_key#53/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xaa0 fs/super.c:344
1 lock held by syz.5.263/7855:
2 locks held by syz.1.264/7862:
2 locks held by syz.3.265/7866:
2 locks held by syz.2.266/7868:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xf95/0xfe0 kernel/hung_task.c:515
kthread+0x389/0x480 kernel/kthread.c:467
ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6604 Comm: udevd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__might_resched+0x147/0x4d0 kernel/sched/core.c:8840
Code: 28 84 c0 0f 85 d7 02 00 00 41 f6 45 00 02 75 21 4d 8d ae 98 0a 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 d4 02 00 00 <41> 83 7d 00 00 74 7e 48 c7 c0 80 97 a2 8f 48 c1 e8 03 0f b6 04 28
RSP: 0018:ffffc9000415f428 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8db8bddd RDI: ffffffff8be09760
RBP: dffffc0000000000 R08: ffff88807f4fe063 R09: 1ffff1100fe9fc0c
R10: dffffc0000000000 R11: ffffed100fe9fc0d R12: ffff88802c98a2c4
R13: ffff88802c98a8d8 R14: ffff88802c989e40 R15: 1ffff11005931458
FS: 00007f7c3a744880(0000) GS:ffff888125bf9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7c39ffe000 CR3: 0000000073392000 CR4: 00000000003526f0
Call Trace:
zap_pmd_range mm/memory.c:1949 [inline]
zap_pud_range mm/memory.c:1975 [inline]
zap_p4d_range mm/memory.c:1996 [inline]
unmap_page_range+0x3b7f/0x4170 mm/memory.c:2017
unmap_single_vma mm/memory.c:2059 [inline]
unmap_vmas+0x399/0x580 mm/memory.c:2101
vms_clear_ptes+0x353/0x530 mm/vma.c:1271
vms_complete_munmap_vmas+0x206/0x8a0 mm/vma.c:1320
do_vmi_align_munmap+0x364/0x440 mm/vma.c:1579
do_vmi_munmap+0x253/0x2e0 mm/vma.c:1627
__vm_munmap+0x207/0x380 mm/vma.c:3247
__do_sys_munmap mm/mmap.c:1077 [inline]
__se_sys_munmap mm/mmap.c:1074 [inline]
__x64_sys_munmap+0x60/0x70 mm/mmap.c:1074
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c3a11e097
Code: 73 01 c3 48 8b 0d 61 2d 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 31 2d 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc80b40ef8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000564a23776730 RCX: 00007f7c3a11e097
RDX: 0000564a23771418 RSI: 0000000000000200 RDI: 00007f7c3a003000
RBP: 0000564a23783ff0 R08: 0000000000000030 R09: 0000000000040000
R10: 0000564a23783fe0 R11: 0000000000000246 R12: 00007f7c3a8697c0
R13: 00007f7c3a86b39c R14: 0000000000000022 R15: 0000000000000001