INFO: task kworker/1:2:790 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D stack:23352 pid:790 ppid:2 flags:0x00004000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x15ae/0x4700 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
io_schedule+0x80/0xd0 kernel/sched/core.c:9075
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:2657 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
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.2.244:7043 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.244 state:D stack:24688 pid:7043 ppid:5794 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x15ae/0x4700 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
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:1602
gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1344
vfs_get_tree+0x8c/0x280 fs/super.c:1775
do_new_mount+0x24a/0xa60 fs/namespace.c:3412
do_mount fs/namespace.c:3780 [inline]
__do_sys_mount fs/namespace.c:3989 [inline]
__se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3966
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: 0033:0x7f1e159a07ca
RSP: 002b:00007f1e167bee58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1e167beee0 RCX: 00007f1e159a07ca
RDX: 00002000000002c0 RSI: 0000200000000300 RDI: 00007f1e167beea0
RBP: 00002000000002c0 R08: 00007f1e167beee0 R09: 0000000000000010
R10: 0000000000000010 R11: 0000000000000246 R12: 0000200000000300
R13: 00007f1e167beea0 R14: 0000000000037fcc R15: 0000200000000340
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e1322e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8e1322e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8e1322e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6669
4 locks held by kworker/u4:4/60:
2 locks held by kworker/1:2/790:
#0: ffff8880197fa138 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
#0: ffff8880197fa138 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
#1: ffffc90003b37d00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
#1: ffffc90003b37d00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
3 locks held by kworker/u4:9/3464:
2 locks held by getty/5550:
#0: ffff888032fa20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000327e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x428/0x1370 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5792:
#0: ffff88807e4340e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807e4340e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807e4340e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:510
1 lock held by syz.2.244/7043:
#0: ffff8880798b80e0 (&type->s_umount_key#68){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880798b80e0 (&type->s_umount_key#68){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880798b80e0 (&type->s_umount_key#68){+.+.}-{3:3}, at: get_tree_bdev+0x345/0x520 fs/super.c:1600
2 locks held by syz.4.570/8380:
=============================================
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 10/07/2026
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: 7203 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:211
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d cc 06 06 0e 48 89 de 5b e9 e3 33 58 00 cc cc cc f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 10 e4 7b 7e 65 8b 15 11 e4 7b 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc9000367f6c0 EFLAGS: 00000002
RAX: ffffffff81c5c515 RBX: ffff888140ec102c RCX: 0000000000000000
RDX: ffff88802b27bc00 RSI: 0000000000000000 RDI: 0000000000000004
RBP: ffff888140ec1028 R08: ffffc9000006cea0 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520006cfeec R12: 0000000000015cec
R13: 0000000000000004 R14: 0000000000000000 R15: 1ffff110281d8205
FS: 0000555590ea3500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e6a9f62f8 CR3: 00000000541ae000 CR4: 00000000003506f0
Call Trace:
pcpu_block_update+0x1b5/0x8d0 mm/percpu.c:645
pcpu_chunk_refresh_hint+0x494/0x950 mm/percpu.c:763
pcpu_block_update_hint_free mm/percpu.c:1053 [inline]
pcpu_free_area+0xa06/0xdd0 mm/percpu.c:1302
free_percpu+0x2ef/0xe40 mm/percpu.c:2282
cleanup_entry+0x2cd/0x350 net/ipv6/netfilter/ip6_tables.c:676
__do_replace+0x75b/0x9b0 net/ipv6/netfilter/ip6_tables.c:1102
do_replace net/ipv6/netfilter/ip6_tables.c:1161 [inline]
do_ip6t_set_ctl+0xb41/0xe10 net/ipv6/netfilter/ip6_tables.c:1646
nf_setsockopt+0x263/0x280 net/netfilter/nf_sockopt.c:101
do_sock_setsockopt+0x175/0x1a0 net/socket.c:2322
__sys_setsockopt net/socket.c:2345 [inline]
__do_sys_setsockopt net/socket.c:2354 [inline]
__se_sys_setsockopt net/socket.c:2351 [inline]
__x64_sys_setsockopt+0x182/0x200 net/socket.c:2351
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: 0033:0x7f9e6a7a0d9a
Code: 48 83 ec 10 48 63 c9 48 63 ff 45 89 c9 6a 2c e8 6c 99 fb ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7
RSP: 002b:00007ffe2c80d738 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ffe2c80d7c0 RCX: 00007f9e6a7a0d9a
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00000000000003b8 R09: 0000000000000000
R10: 00007f9e6a9f6960 R11: 0000000000000202 R12: 00007f9e6a9f6900
R13: 00007ffe2c80d75c R14: 0000000000000000 R15: 00007f9e6a9f6fc0