INFO: task jbd2/sda1-8:5167 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:22768 pid:5167 tgid:5167 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__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_buffer include/linux/buffer_head.h:414 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:171 [inline]
jbd2_journal_commit_transaction+0x3cfa/0x6560 fs/jbd2/commit.c:883
kjournald2+0x41c/0x7b0 fs/jbd2/journal.c:201
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0:
ffffffff8e937ae0
(
rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by dhcpcd/5498:
#0:
ffffffff8fc98148
(
vlan_ioctl_mutex
){+.+.}-{4:4}
, at: sock_ioctl+0x661/0x8e0 net/socket.c:1290
#1:
ffffffff8fcb2a88
(
rtnl_mutex
){+.+.}-{4:4}
, at: vlan_ioctl_handler+0x112/0x9d0 net/8021q/vlan.c:553
2 locks held by getty/5587:
#0:
ffff88814d7c70a0
(
&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
2 locks held by kworker/1:4/5882:
8 locks held by kworker/1:6/6077:
5 locks held by kworker/u8:10/7190:
4 locks held by kworker/1:7/9346:
3 locks held by kworker/1:9/17660:
#0:
ffff88801ac80948
(
(wq_completion)events
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3204 [inline]
, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1:
ffffc9000c3e7d00
(
deferred_process_work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3205 [inline]
, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2:
ffffffff8fcb2a88
(
rtnl_mutex
){+.+.}-{4:4}
, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
6 locks held by kworker/u8:1/20961:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc9000bb2fd00
(
net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8fca65d0
(
pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602
#3: ffff888066aa20e8 (&dev->mutex
){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
){....}-{4:4}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
#4: ffff888066aa3250 (&devlink->lock_key
#48
){+.+.}-{4:4}
, at: devl_lock net/devlink/core.c:276 [inline]
, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506
#5:
ffffffff8fcb2a88
(
rtnl_mutex
){+.+.}-{4:4}
, at: nsim_init_netdevsim drivers/net/netdevsim/netdev.c:721 [inline]
, at: nsim_create+0x408/0x890 drivers/net/netdevsim/netdev.c:793
3 locks held by kworker/u8:6/22395:
#0:
ffff88801ac89148
(
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3204 [inline]
, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1:
ffffc90005107d00
((linkwatch_work).work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3205 [inline]
, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8fcb2a88
(
rtnl_mutex
){+.+.}-{4:4}
, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:281
2 locks held by kworker/1:1/30511:
3 locks held by syz-executor/1113:
#0:
ffffffff8f45c3e0
(&ops->srcu
#2
){.+.+}-{0:0}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:555
#1:
ffffffff8fcb2a88
(
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline]
, at: rtnl_newlink+0xbcb/0x2150 net/core/rtnetlink.c:4010
#2:
ffffffff8e93cff8
(
rcu_state.exp_mutex){+.+.}-{4:4}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
2 locks held by syz-executor/1114:
#0: ffffffff8f468bc0 (&ops->srcu
#2
){.+.+}-{0:0}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:555
#1: ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#1: ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline]
#1: ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xbcb/0x2150 net/core/rtnetlink.c:4010
1 lock held by syz-executor/1117:
#0:
ffffffff8fcb2a88
(
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline]
, at: rtnl_newlink+0xbcb/0x2150 net/core/rtnetlink.c:4010
2 locks held by syz-executor/1118:
#0: ffffffff8f45c3e0
(&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
(&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
(&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:555
#1: ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#1: ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline]
#1: ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xbcb/0x2150 net/core/rtnetlink.c:4010
2 locks held by syz-executor/1120:
#0: ffffffff8f45c3e0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8f45c3e0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8f45c3e0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:555
#1:
ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline]
ffffffff8fcb2a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xbcb/0x2150 net/core/rtnetlink.c:4010
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
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: 30511 Comm: kworker/1:1 Not tainted 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:409
Code: 00 55 4f fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 a1 b4 b5 fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 cc cc cc cc 89 e9 80 e1 07 38 c1 7c
RSP: 0018:ffffc900056773d8 EFLAGS: 00000006
RAX: 1ffffffff34de105 RBX: ffffffff9a6f0820 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 0000000000000000 R08: ffffffff85501ee6 R09: fffff52000acee5c
R10: dffffc0000000000 R11: ffffffff85501ea0 R12: dffffc0000000000
R13: 1ffff92000acee98 R14: 00000000000003f9 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002028e030 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
serial_port_in include/linux/serial_core.h:791 [inline]
serial8250_console_write+0x4de/0x1ed0 drivers/tty/serial/8250/8250_port.c:3377
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
m920x_rc_query+0x314/0x820
legacy_dvb_usb_read_remote_control+0x122/0x590 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244