INFO: task jbd2/sda1-8:4645 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:24432 pid:4645 tgid:4645 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
__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:415 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:171 [inline]
jbd2_journal_commit_transaction+0x3df6/0x67e0 fs/jbd2/commit.c:887
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:
ffffffff8e938320
(rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
(rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
(rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
7 locks held by kworker/1:1/46:
5 locks held by kworker/1:2/58:
5 locks held by kworker/u8:7/2520:
#0:
ffff8880b923e9d8
(&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1:
ffff8880b9228948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
#2: ffff8880b922a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
#3:
ffffffff95172e30 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16d/0x510 lib/debugobjects.c:709
#4:
ffff8880b922a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
5 locks held by kworker/u8:9/2567:
#0: ffff8880166e5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff8880166e5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90009547d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90009547d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fc77ed0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffff88801dab90e8
(
&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
#4: ffff88801dabc250 (&devlink->lock_key#4){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff88801dabc250 (&devlink->lock_key#4){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff88801dabc250 (&devlink->lock_key#4){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506
2 locks held by getty/4983:
#0: ffff88802b6c60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:3/5241:
4 locks held by udevd/6031:
#0:
ffff88807c9a8d58 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xb7/0xd60 fs/seq_file.c:182
#1: ffff888023f79888 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x53/0x3b0 fs/kernfs/file.c:154
#2: ffff8880249daa58 (kn->active#25){.+.+}-{0:0}, at: kernfs_seq_start+0x72/0x3b0 fs/kernfs/file.c:155
#3: ffff888079100190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1014 [inline]
#3: ffff888079100190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
5 locks held by syz-executor/6116:
#0:
ffff888079b1e420 (sb_writers#8
){.+.+}-{0:0}
, at: file_start_write include/linux/fs.h:2881 [inline]
, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1:
ffff888022dd1088
(
&of->mutex
){+.+.}-{3:3}
, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff88802303f008 (kn->active#54){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3:
ffffffff8f521028 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4:
ffff88801dab90e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
ffff88801dab90e8 (&dev->mutex){....}-{3:3}, at: device_del+0xa6/0x9b0 drivers/base/core.c:3833
4 locks held by syz-executor/6125:
#0: ffff888079b1e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2881 [inline]
#0: ffff888079b1e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff8880228e9888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff88802303f008 (kn->active#54){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3:
ffffffff8f521028
(
nsim_bus_dev_list_lock
){+.+.}-{3:3}
, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
4 locks held by syz-executor/6140:
#0: ffff888079b1e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2881 [inline]
#0: ffff888079b1e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff88806a2e3488 (&of->mutex
){+.+.}-{3:3}
, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2:
ffff88802303f008
(
kn->active
#54
){.+.+}-{0:0}
, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3:
ffffffff8f521028
(nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
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:
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 46 Comm: kworker/1:1 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events nsim_dev_hwstats_traffic_work
RIP: 0010:io_serial_out+0x7e/0xc0 drivers/tty/serial/8250/8250_port.c:413
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 cc ab bb 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:ffffc90000a17ff0 EFLAGS: 00000002
RAX: 0000000000000039 RBX: ffffffff95259d40 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 0000000000000000 R08: ffffffff853f23eb R09: 1ffff110040a8046
R10: dffffc0000000000 R11: ffffffff853f23a0 R12: dffffc0000000000
R13: 0000000000000039 R14: 0000000000000039 R15: 00000000000003f8
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff0829953b0 CR3: 000000007c792000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial8250_console_write+0x1212/0x1770 drivers/tty/serial/8250/8250_port.c:3393
console_emit_next_record kernel/printk/printk.c:2983 [inline]
console_flush_all+0x865/0xfd0 kernel/printk/printk.c:3049
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x5dc/0x7c0 kernel/printk/printk.c:2348
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4912
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4923
_dev_warn+0x122/0x170 drivers/base/core.c:4979
usb_rx_callback_intf0+0x15a/0x1a0 drivers/media/rc/imon.c:1768
__usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x830/0x45a0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:trace_workqueue_execute_end include/trace/events/workqueue.h:110 [inline]
RIP: 0010:process_one_work kernel/workqueue.c:3236 [inline]
RIP: 0010:process_scheduled_works+0xad8/0x1830 kernel/workqueue.c:3312
Code: c6 0f 92 c3 bf 02 00 00 00 89 de e8 12 22 35 00 31 ff 89 de e8 09 22 35 00 45 84 f6 74 15 e8 2f 55 1b 00 84 c0 4c 8b 74 24 30 <74> 13 e8 f1 1e 35 00 eb 1e e8 ea 1e 35 00 4c 8b 74 24 30 eb 12 80
RSP: 0018:ffffc90000b67bc0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815e6ee1
RDX: ffff88801c6a1e00 RSI: ffffffff8c606ea0 RDI: ffffffff8c606e60
RBP: ffffc90000b67dc0 R08: ffffffff815e6f07 R09: 1ffffffff202fefd
R10: dffffc0000000000 R11: fffffbfff202fefe R12: dffffc0000000000
R13: ffff88801aee2c40 R14: ffff888015894408 R15: ffffffff815e6d85
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
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
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored