INFO: task kworker/0:5:5922 blocked for more than 144 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D stack:18864 pid:5922 tgid:5922 ppid:2 flags:0x00004000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
io_schedule+0x8d/0x110 kernel/sched/core.c:7683
folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1300
folio_wait_locked include/linux/pagemap.h:1247 [inline]
gfs2_jhead_process_page+0x16e/0x510 fs/gfs2/lops.c:470
gfs2_find_jhead+0xd68/0xf10 fs/gfs2/lops.c:587
gfs2_recover_func+0x6c1/0x1f10 fs/gfs2/recovery.c:460
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.6.1014:11412 blocked for more than 144 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1014 state:D stack:22648 pid:11412 tgid:11409 ppid:7338 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:237
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:77 [inline]
gfs2_recover_journal+0xf2/0x160 fs/gfs2/recovery.c:577
init_journal+0x1855/0x2410 fs/gfs2/ops_fstype.c:811
init_inodes+0xdc/0x320 fs/gfs2/ops_fstype.c:864
gfs2_fill_super+0x1bd1/0x24d0 fs/gfs2/ops_fstype.c:1249
get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636
gfs2_get_tree+0x54/0x220 fs/gfs2/ops_fstype.c:1330
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6dbc7874ca
RSP: 002b:00007f6dbd648e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6dbd648ef0 RCX: 00007f6dbc7874ca
RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007f6dbd648eb0
RBP: 0000000020037f40 R08: 00007f6dbd648ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020037f80
R13: 00007f6dbd648eb0 R14: 0000000000037f95 R15: 00000000200000c0
Showing all locks held in the system:
1 lock held by rcu_exp_gp_kthr/19:
#0: ffff8880b863e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
1 lock held by ksoftirqd/1/24:
#0: ffff8880b863e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
1 lock held by khungtaskd/30:
#0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
2 locks held by getty/5589:
#0: ffff88814d5ad0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032fb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:3/5847:
#0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc900041afc60 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900041afc60 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8e7e1bb0 (umhelper_sem){++++}-{4:4}, at: usermodehelper_read_lock_wait+0x14e/0x260 kernel/umh.c:246
2 locks held by kworker/0:5/5922:
#0: ffff888147a91948 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888147a91948 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc900044dfc60 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900044dfc60 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
1 lock held by syz.6.1014/11412:
#0: ffff88807d87a0e0 (&type->s_umount_key#69/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 fs/super.c:344
2 locks held by syz.3.1530/13840:
#0: ffff88805a91ca08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:865 [inline]
#0: ffff88805a91ca08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline]
#0: ffff88805a91ca08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1419
#1: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#1: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10474 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_out+0x7e/0xc0 drivers/tty/serial/8250/8250_port.c:416
Code: fc 89 e9 41 d3 e7 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 6c 86 af fc 44 03 3b 44 89 f0 44 89 fa ee <5b> 41 5c 41 5e 41 5f 5d c3 cc cc cc cc 89 e9 80 e1 07 38 c1 7c a7
RSP: 0018:ffffc9000c4fe710 EFLAGS: 00000002
RAX: 000000000000005d RBX: ffffffff9a728080 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 0000000000000000 R08: ffffffff8576029b R09: 1ffff11004913046
R10: dffffc0000000000 R11: ffffffff85760250 R12: dffffc0000000000
R13: ffffffff9a422f2e R14: 000000000000005d R15: 00000000000003f8
FS: 000055556cd46500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7f4747ab8 CR3: 0000000021ed4000 CR4: 00000000003526f0
Call Trace:
serial8250_console_write+0x14ed/0x1ed0 drivers/tty/serial/8250/8250_port.c:3418
console_emit_next_record kernel/printk/printk.c:3122 [inline]
console_flush_all+0x869/0xeb0 kernel/printk/printk.c:3210
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309
vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432
_printk+0xd5/0x120 kernel/printk/printk.c:2457
bio_check_eod block/blk-core.c:557 [inline]
submit_bio_noacct+0xfcd/0x1900 block/blk-core.c:784
__submit_merged_bio+0x2a9/0x710 fs/f2fs/data.c:535
__f2fs_submit_merged_write fs/f2fs/data.c:631 [inline]
__submit_merged_write_cond fs/f2fs/data.c:653 [inline]
f2fs_submit_merged_write_cond+0x28a/0x360 fs/f2fs/data.c:670
f2fs_write_cache_pages fs/f2fs/data.c:3227 [inline]
__f2fs_write_data_pages fs/f2fs/data.c:3312 [inline]
f2fs_write_data_pages+0x2c18/0x3630 fs/f2fs/data.c:3339
do_writepages+0x35f/0x880 mm/page-writeback.c:2683
filemap_fdatawrite_wbc mm/filemap.c:389 [inline]
__filemap_fdatawrite_range mm/filemap.c:422 [inline]
__filemap_fdatawrite mm/filemap.c:428 [inline]
filemap_fdatawrite+0x1f3/0x2a0 mm/filemap.c:433
f2fs_sync_dirty_inodes+0x348/0x860 fs/f2fs/checkpoint.c:1124
block_operations fs/f2fs/checkpoint.c:1262 [inline]
f2fs_write_checkpoint+0x840/0x1c80 fs/f2fs/checkpoint.c:1666
kill_f2fs_super+0x27d/0x690 fs/f2fs/super.c:4953
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
task_work_run+0x24f/0x310 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1a01f87057
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffe20b44d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1a020018f4 RCX: 00007f1a01f87057
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffe20b4590
RBP: 00007fffe20b4590 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffe20b5610
R13: 00007f1a020018f4 R14: 00007fffe20b5650 R15: 0000000000000064