INFO: task syz-executor:2647 blocked for more than 143 seconds.
Not tainted 6.11.0-rc1-syzkaller-00012-gd483f034f032 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:24720 pid:2647 tgid:2647 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xcda/0x2f80 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
d_revalidate fs/namei.c:868 [inline]
d_revalidate fs/namei.c:865 [inline]
lookup_fast+0x239/0x540 fs/namei.c:1679
walk_component+0x5b/0x5b0 fs/namei.c:2035
link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2404
link_path_walk fs/namei.c:2336 [inline]
path_openat+0x238/0x2d20 fs/namei.c:3882
do_filp_open+0x1dc/0x430 fs/namei.c:3913
do_sys_openat2+0x17a/0x1e0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1442
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: 0033:0x7f80319a6cb1
RSP: 002b:00007ffc68c4cae0 EFLAGS: 00000287
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000003db RCX: 00007f80319a6cb1
RDX: 0000000000090800 RSI: 00007f8031a14de5 RDI: 00000000ffffff9c
RBP: 00007ffc68c4cb7c R08: 0000000000022656 R09: 00007f8031b0a080
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000b6006 R14: 00000000000b6006 R15: 00007ffc68c4cbd0
INFO: task udevd:5358 blocked for more than 144 seconds.
Not tainted 6.11.0-rc1-syzkaller-00012-gd483f034f032 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24032 pid:5358 tgid:5358 ppid:2545 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xcda/0x2f80 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1009 [inline]
uevent_show+0x188/0x3b0 drivers/base/core.c:2743
dev_attr_show+0x53/0xe0 drivers/base/core.c:2437
sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230
kernfs_fop_read_iter+0x41a/0x590 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:395 [inline]
vfs_read+0x869/0xbd0 fs/read_write.c:476
ksys_read+0x12f/0x260 fs/read_write.c:619
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: 0033:0x7fef178c7b6a
RSP: 002b:00007fff24780768 EFLAGS: 00000246
ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000558078a886c0 RCX: 00007fef178c7b6a
RDX: 0000000000001000 RSI: 0000558078aa0bb0 RDI: 0000000000000008
RBP: 0000558078a886c0 R08: 0000000000000008 R09: 0000000000000004
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007fff24780c48 R15: 000000000000000a
Showing all locks held in the system:
5 locks held by kworker/1:0/24:
1 lock held by khungtaskd/30:
#0:
ffffffff88cb68a0
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6620
5 locks held by kworker/u8:3/41:
#0: ffff888100abb148
((wq_completion)netns
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900002b7d80
(
net_cleanup_work
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2:
ffffffff89f54990
(
pernet_ops_rwsem
){++++}-{3:3}
, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594
#3:
ffffffff89f6a0a8
(
rtnl_mutex
){+.+.}-{3:3}
, at: cleanup_net+0x503/0xbf0 net/core/net_namespace.c:630
#4:
ffffffff88cc2038
(
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
7 locks held by kworker/1:1/42:
2 locks held by kworker/u8:5/273:
#0:
ffff888100089148
(
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1:
ffffc9000164fd80
((work_completion)(&sub_info->work)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
5 locks held by kworker/1:2/804:
2 locks held by kworker/u8:10/1129:
#0: ffff888100089148
(
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1:
ffffc9000216fd80
((work_completion)(&sub_info->work)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
3 locks held by kworker/R-ipv6_/1252:
#0: ffff88810c74f948
(
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1:
ffffc9000239fd08
((work_completion)(&(&net->ipv6.addr_chk_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff89f6a0a8
(rtnl_mutex
){+.+.}-{3:3}
, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4734
2 locks held by getty/2603:
#0:
ffff8881135c10a0
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1:
ffffc900000432f0
(&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:5/4925:
#0:
ffff888100080948
(
(wq_completion)events
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1:
ffffc90001d4fd80
(free_ipc_work
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
5 locks held by kworker/1:3/4980:
5 locks held by kworker/1:5/5146:
8 locks held by kworker/1:6/5264:
4 locks held by udevd/5358:
#0:
ffff8881194eab08
(
&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff88811c103488
(&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2:
ffff8881193142d8
(
kn->active
#3
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff888108380190
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
1 lock held by syz-executor/10721:
#0:
ffffffff88cc2038
(
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc1-syzkaller-00012-gd483f034f032 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xf4e/0x1280 kernel/hung_task.c:379
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 0 to CPUs 1:
yealink 3-1:36.0: unexpected response 0
yealink 3-1:36.0: urb_ctl_callback - urb status -71
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5264 Comm: kworker/1:6 Not tainted 6.11.0-rc1-syzkaller-00012-gd483f034f032 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x111/0x1a0 mm/kasan/generic.c:189
Code: 44 89 c2 e8 01 eb ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 85 d2 74 4f 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 41 80 38 00 <74> f2 eb b2 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83 c0
RSP: 0018:ffffc900001b8370 EFLAGS: 00000046
RAX: fffffbfff1aad1d4 RBX: fffffbfff1aad1d5 RCX: ffffffff8131445b
RDX: fffffbfff1aad1d5 RSI: 0000000000000008 RDI: ffffffff8d568ea0
RBP: fffffbfff1aad1d4 R08: 0000000000000000 R09: fffffbfff1aad1d4
R10: ffffffff8d568ea7 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000006 R14: 0000000000000002 R15: ffff88810eecd700
FS: 0000000000000000(0000) GS:ffff8881f6300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f903da520 CR3: 0000000008aa0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:227 [inline]
check_wait_context kernel/locking/lockdep.c:4797 [inline]
__lock_acquire+0x6eb/0x3cb0 kernel/locking/lockdep.c:5092
lock_acquire kernel/locking/lockdep.c:5759 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
uart_port_lock_irqsave include/linux/serial_core.h:618 [inline]
serial8250_console_write+0xaa6/0x1090 drivers/tty/serial/8250/8250_port.c:3352
console_emit_next_record kernel/printk/printk.c:2983 [inline]
console_flush_all+0x53c/0xd70 kernel/printk/printk.c:3049
console_unlock+0xae/0x290 kernel/printk/printk.c:3118
vprintk_emit kernel/printk/printk.c:2348 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
dev_vprintk_emit drivers/base/core.c:4909 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4920
__dev_printk+0xf5/0x270 drivers/base/core.c:4932
_dev_err+0xe5/0x120 drivers/base/core.c:4975
urb_ctl_callback+0x1eb/0x2f0 drivers/input/misc/yealink.c:456
__usb_hcd_giveback_urb+0x466/0x6e0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x1e5/0xa40 kernel/sched/core.c:5062
Code: 0f 85 ad 07 00 00 8b 0d f1 59 0b 09 85 c9 0f 85 cb 02 00 00 48 89 df e8 59 e1 bc 05 e8 f4 94 33 00 fb 65 48 8b 1d fb b3 dc 7e <48> 8d bb 30 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000f05edd0 EFLAGS: 00000206
RAX: 0000000000162521 RBX: ffff88810eecd700 RCX: 1ffffffff1ab17ba
RDX: 0000000000000000 RSI: ffffffff8727e740 RDI: ffffffff87465d00
RBP: ffffc9000f05ee18 R08: 0000000000000001 R09: fffffbfff1aad1df
R10: ffffffff8d568eff R11: 0000000000000000 R12: ffff8881f633d758
R13: ffff888105ab5700 R14: 0000000000000000 R15: ffff8881f633d758
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xce2/0x2f80 kernel/sched/core.c:6529
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6708
__cond_resched+0x1b/0x30 kernel/sched/core.c:7041
might_resched include/linux/kernel.h:73 [inline]
might_alloc include/linux/sched/mm.h:337 [inline]
might_alloc include/linux/sched/mm.h:332 [inline]
slab_pre_alloc_hook mm/slub.c:3939 [inline]
slab_alloc_node mm/slub.c:4017 [inline]
kmem_cache_alloc_noprof+0x24c/0x2b0 mm/slub.c:4044
__kernfs_new_node+0xd3/0x890 fs/kernfs/dir.c:624
kernfs_new_node+0x186/0x240 fs/kernfs/dir.c:700
kernfs_create_dir_ns+0x4c/0x150 fs/kernfs/dir.c:1061
sysfs_create_dir_ns+0x13b/0x2b0 fs/sysfs/dir.c:59
create_dir lib/kobject.c:73 [inline]
kobject_add_internal+0x2c8/0x990 lib/kobject.c:240
kobject_add_varg lib/kobject.c:374 [inline]
kobject_add+0x16f/0x240 lib/kobject.c:426
device_add+0x289/0x1a70 drivers/base/core.c:3617
usb_create_ep_devs+0x160/0x2b0 drivers/usb/core/endpoint.c:169
create_intf_ep_devs.isra.0+0x161/0x200 drivers/usb/core/message.c:1252
usb_set_configuration+0x10ed/0x1c50 drivers/usb/core/message.c:2216
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
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