INFO: task syz-executor:2947 blocked for more than 143 seconds.
Not tainted 6.13.0-rc4-syzkaller-00080-gf1a2241778d9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:24064 pid:2947 tgid:2947 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1526
kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
d_revalidate fs/namei.c:927 [inline]
d_revalidate fs/namei.c:924 [inline]
lookup_fast+0x239/0x540 fs/namei.c:1752
walk_component+0x5b/0x5b0 fs/namei.c:2108
link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2477
link_path_walk fs/namei.c:2409 [inline]
path_openat+0x228/0x2d60 fs/namei.c:3983
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f75b41f5621
RSP: 002b:00007ffec94e6010 EFLAGS: 00000287
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000229 RCX: 00007f75b41f5621
RDX: 0000000000090800 RSI: 00007f75b4271e28 RDI: 00000000ffffff9c
RBP: 00007ffec94e60ac R08: 0000000000018f22 R09: 00007f75b4f20000
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000848b3 R14: 00007ffec94e6100 R15: 00000000000000be
INFO: task kworker/1:4:5231 blocked for more than 144 seconds.
Not tainted 6.13.0-rc4-syzkaller-00080-gf1a2241778d9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D
stack:21360 pid:5231 tgid:5231 ppid:2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
device_lock include/linux/device.h:1014 [inline]
ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1161 [inline]
ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1294
request_firmware_work_func+0x13a/0x250 drivers/base/firmware_loader/main.c:1196
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task udevd:5237 blocked for more than 144 seconds.
Not tainted 6.13.0-rc4-syzkaller-00080-gf1a2241778d9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24080 pid:5237 tgid:5237 ppid:2846 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
device_lock include/linux/device.h:1014 [inline]
uevent_show+0x188/0x3b0 drivers/base/core.c:2729
dev_attr_show+0x53/0xe0 drivers/base/core.c:2423
sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x87f/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58f6056b6a
RSP: 002b:00007ffe9d254778 EFLAGS: 00000246
ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00005589f7c3b1f0 RCX: 00007f58f6056b6a
RDX: 0000000000001000 RSI: 00005589f7c3e010 RDI: 0000000000000008
RBP: 00005589f7c3b1f0 R08: 0000000000000008 R09: 0000000002000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffe9d254c58 R15: 000000000000000a
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
1 lock held by khungtaskd/30:
#0: ffffffff88ebc880 (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+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:2/36:
#0:
ffff888100089148
((wq_completion)events_unbound){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000267d80 ((work_completion)(&sub_info->work)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by getty/2904:
#0: ffff8881121ba0a0 (&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock
){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/2947:
#0: ffff888100abc148
(&root->kernfs_rwsem
){++++}-{4:4}, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2949:
#0: ffff888100abc148 (&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2951:
#0: ffff888100abc148
(&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2952:
#0: ffff888100abc148 (&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2954:
#0: ffff888100abc148
(
&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
4 locks held by kworker/0:2/5228:
3 locks held by kworker/1:4/5231:
#0: ffff888100080948
(
(wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000226fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2:
ffff88810b349190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
ffff88810b349190 (&dev->mutex){....}-{4:4}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1161 [inline]
ffff88810b349190 (&dev->mutex){....}-{4:4}, at: ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1294
5 locks held by kworker/1:5/5234:
#0: ffff8881066aed48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1:
ffffc9000229fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2:
ffff88810afe9190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888106af8a78
(
&(&priv->bus_notifier)->rwsem){++++}-{4:4}
, at: blocking_notifier_call_chain kernel/notifier.c:379 [inline]
, at: blocking_notifier_call_chain+0x53/0xa0 kernel/notifier.c:368
#4: ffff888100abc148
(
&root->kernfs_rwsem
){++++}-{4:4}, at: kernfs_find_and_get_ns+0x71/0xc0 fs/kernfs/dir.c:918
4 locks held by udevd/5237:
#0:
ffff888111aeb790 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#1: ffff88811abbf888
(&of->mutex#2){+.+.}-{4:4}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88810771c968 (
kn->active
#5
){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff888109357190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
2 locks held by kworker/0:3/5240:
4 locks held by udevd/5813:
#0:
ffff888121eced58 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#1:
ffff888111681888 (
&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88811354df08 (kn->active#5){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff8881102d7190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
6 locks held by kworker/1:8/7857:
#0:
ffff8881066aed48
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90012777d80
((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2:
ffff88810af97190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
ffff88810af97190 (&dev->mutex){....}-{4:4}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff8881102d7190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88813a906160
(&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
#5: ffffffff88ec8080 (
rcu_state.barrier_mutex
){+.+.}-{4:4}
, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:4565
1 lock held by syz.0.1019/8775:
#0:
ffff888100abc148 (
&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
1 lock held by syz-executor/8791:
#0: ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/8792:
#0: ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/8793:
#0:
ffff888100abc148 (
&root->kernfs_rwsem
){++++}-{4:4}, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/8794:
#0: ffff888100abc148
(
&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by modprobe/8803:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc4-syzkaller-00080-gf1a2241778d9 #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+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5240 Comm: kworker/0:3 Not tainted 6.13.0-rc4-syzkaller-00080-gf1a2241778d9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:410
Code: 65 b2 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 78 28 0c ff eb a2 e8 01 29
RSP: 0018:ffffc900000074a8 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff82a90630 RDI: ffffffff93644920
RBP: ffffffff936448e0 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff26c8976 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020006200 CR3: 000000011650a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:137 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2088
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3335 [inline]
serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3413
console_emit_next_record kernel/printk/printk.c:3122 [inline]
console_flush_all+0x800/0xc60 kernel/printk/printk.c:3210
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
dev_vprintk_emit drivers/base/core.c:4935 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4946
__dev_printk+0xf5/0x270 drivers/base/core.c:4958
_dev_warn+0xe5/0x120 drivers/base/core.c:5002
usb_rx_callback_intf0+0x11c/0x1a0 drivers/media/rc/imon.c:1768
__usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17f7/0x3960 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820
handle_softirqs+0x206/0x8d0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xfa/0x160 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:debug_check_no_locks_freed+0x223/0x2b0 kernel/locking/lockdep.c:6701
Code: c7 20 11 28 87 e8 6d 1e 03 00 e8 c8 2f ae 05 e8 f3 2d 04 00 9c 58 f6 c4 02 75 2d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 10 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 83 c3 28 48 39 f3
RSP: 0018:ffffc900022f7a58 EFLAGS: 00000282
RAX: 0000000000000046 RBX: ffff88810c30c578 RCX: dffffc0000000000
RDX: ffffc900022f7da8 RSI: ffff88810c30c578 RDI: ffff88810c30c510
RBP: ffff888114b09a40 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000000004ef R12: ffff88810c30c540
R13: ffff88810c30ba80 R14: ffff888114b09a48 R15: 0000000000000008
slab_free_hook mm/slub.c:2281 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0xe5/0x470 mm/slub.c:4761
usb_control_msg+0x39e/0x4b0 drivers/usb/core/message.c:160
m920x_read drivers/media/usb/dvb-usb/m920x.c:36 [inline]
m920x_rc_query+0xdf/0x770 drivers/media/usb/dvb-usb/m920x.c:188
legacy_dvb_usb_read_remote_control+0x10a/0x500 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244