INFO: task kworker/1:3:5910 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3 state:D stack:23104 pid:5910 tgid:5910 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7026
io_schedule+0x80/0xd0 kernel/sched/core.c:7871
folio_wait_bit_common+0x6b0/0xb80 mm/filemap.c:1317
folio_wait_locked include/linux/pagemap.h:1208 [inline]
gfs2_jhead_process_page+0x16e/0x650 fs/gfs2/lops.c:472
gfs2_find_jhead+0xc9e/0xe10 fs/gfs2/lops.c:587
gfs2_recover_func+0x646/0x1d90 fs/gfs2/recovery.c:457
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz.5.702:8424 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.702 state:D stack:24408 pid:8424 tgid:8419 ppid:5843 task_flags:0x400140 flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7026
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:577
init_journal+0x17cc/0x2260 fs/gfs2/ops_fstype.c:798
init_inodes+0xdb/0x320 fs/gfs2/ops_fstype.c:851
gfs2_fill_super+0x1923/0x20d0 fs/gfs2/ops_fstype.c:1255
get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692
gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1337
vfs_get_tree+0x92/0x2b0 fs/super.c:1752
do_new_mount+0x2a2/0xa30 fs/namespace.c:3750
do_mount fs/namespace.c:4078 [inline]
__do_sys_mount fs/namespace.c:4278 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4255
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb74dd9066a
RSP: 002b:00007fb74ec1be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb74ec1bef0 RCX: 00007fb74dd9066a
RDX: 00002000000005c0 RSI: 00002000000002c0 RDI: 00007fb74ec1beb0
RBP: 00002000000005c0 R08: 00007fb74ec1bef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000002c0
R13: 00007fb74ec1beb0 R14: 0000000000037fe8 R15: 00002000000000c0
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8dd3a960 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8dd3a960 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8dd3a960 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5592:
#0: ffff88814dd050a0 (&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+0x43e/0x1400 drivers/tty/n_tty.c:2222
2 locks held by kworker/1:3/5910:
#0: ffff88801d780d48 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline]
#0: ffff88801d780d48 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3346
#1: ffffc9000432fbc0 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline]
#1: ffffc9000432fbc0 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3346
3 locks held by kworker/u8:8/5958:
#0: ffff8880b8839fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:646
#1: ffffc900045efbc0 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline]
#1: ffffc900045efbc0 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3346
#2: ffff8880b8825958 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x8ee/0xf30 kernel/time/timer.c:1117
1 lock held by syz.5.702/8424:
#0: ffff888027f2e0e0 (&type->s_umount_key#86/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 fs/super.c:345
2 locks held by syz.0.1117/9940:
#0: ffffffff8f0cf108 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff8f0cf108 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
#1: ffffffff8dd403f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
#1: ffffffff8dd403f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730 kernel/rcu/tree_exp.h:957
=============================================
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 08/18/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xf93/0xfe0 kernel/hung_task.c:491
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
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: 5821 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:get_cpu_gdt_rw arch/x86/include/asm/desc.h:53 [inline]
RIP: 0010:native_load_tls arch/x86/include/asm/desc.h:294 [inline]
RIP: 0010:__switch_to+0x240/0x1670 arch/x86/kernel/process_64.c:633
Code: 00 fc ff df 80 3c 18 00 74 08 4c 89 e7 e8 38 18 bf 00 4d 89 3c 24 45 89 ef bf 08 00 00 00 44 89 ee e8 54 71 5a 00 41 83 fd 07 <0f> 87 18 07 00 00 e8 05 6d 5a 00 48 8b 44 24 18 4c 8d a8 b8 18 00
RSP: 0018:ffffc9000441f840 EFLAGS: 00000097
RAX: ffffffff816408dc RBX: dffffc0000000000 RCX: 0000000040000000
RDX: ffff888030f00000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: ffffc9000441fa10 R08: ffffffff8f5cd637 R09: 1ffffffff1eb9ac6
R10: dffffc0000000000 R11: fffffbfff1eb9ac7 R12: ffff888030f018e8
R13: 0000000000000000 R14: ffff888030f00000 R15: 0000000000000000
FS: 00005555951fe500(0000) GS:ffff888126372000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdf4208f88 CR3: 0000000077fd9000 CR4: 0000000000350ef0
Call Trace: