INFO: task syz-executor.0:2526 blocked for more than 143 seconds.
Not tainted 6.10.0-rc4-syzkaller-00053-g819984a0dd36 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D
stack:25168 pid:2526 tgid:2526 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xca6/0x3170 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
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:861 [inline]
d_revalidate fs/namei.c:858 [inline]
lookup_fast+0x239/0x540 fs/namei.c:1653
walk_component+0x5b/0x5b0 fs/namei.c:2000
link_path_walk.part.0.constprop.0+0x77f/0xcd0 fs/namei.c:2331
link_path_walk fs/namei.c:2256 [inline]
path_openat+0x22f/0x29f0 fs/namei.c:3803
do_filp_open+0x1dc/0x430 fs/namei.c:3834
do_sys_openat2+0x17a/0x1e0 fs/open.c:1405
do_sys_open fs/open.c:1420 [inline]
__do_sys_openat fs/open.c:1436 [inline]
__se_sys_openat fs/open.c:1431 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1431
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: 0033:0x7fd64d4fdb01
RSP: 002b:00007ffe58f9f7c0 EFLAGS: 00000287
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000415 RCX: 00007fd64d4fdb01
RDX: 0000000000090800 RSI: 00007fd64d55a76a RDI: 00000000ffffff9c
RBP: 00007ffe58f9f87c R08: 0000000000030fe6 R09: 00007fd64d60b080
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 000000000010f498 R14: 000000000010f498 R15: 0000000000000000
INFO: task udevd:5748 blocked for more than 144 seconds.
Not tainted 6.10.0-rc4-syzkaller-00053-g819984a0dd36 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24896 pid:5748 tgid:5748 ppid:2402 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xca6/0x3170 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
__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: 0033:0x7fcc5c8a0b6a
RSP: 002b:00007fff5c49f798 EFLAGS: 00000246
ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000559cb9fe4fa0 RCX: 00007fcc5c8a0b6a
RDX: 0000000000001000 RSI: 0000559cba0215e0 RDI: 0000000000000008
RBP: 0000559cb9fe4fa0 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007fff5c49fc78 R15: 000000000000000a
Showing all locks held in the system:
6 locks held by kworker/0:1/9:
1 lock held by khungtaskd/30:
#0:
ffffffff886b4660
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
6 locks held by kworker/0:2/723:
4 locks held by udevd/2402:
2 locks held by getty/2462:
#0: ffff88810eb730a0
(&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
3 locks held by kworker/1:4/4798:
5 locks held by kworker/0:4/4866:
4 locks held by udevd/5748:
#0:
ffff88811edbec30
(&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff88810f7f3088
(
&of->mutex
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2:
ffff88812f7cd878
(kn->active
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3:
ffff88811658b190
(
&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.3/6452:
#0:
ffffffff886bfdf8
(
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
3 locks held by kworker/1:3/11634:
2 locks held by syz-executor.2/15261:
#0: ffff88810e7ce110
(
&evdev->mutex
){+.+.}-{3:3}
, at: evdev_close_device drivers/input/evdev.c:411 [inline]
, at: evdev_release+0x29f/0x400 drivers/input/evdev.c:456
#1:
ffff88810c3c02c0
(&dev->mutex
#2){+.+.}-{3:3}
, at: input_close_device+0x46/0x200 drivers/input/input.c:704
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc4-syzkaller-00053-g819984a0dd36 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
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+0xf86/0x1240 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 1 to CPUs 0:
yealink 3-1:36.0: urb_ctl_callback - urb status -71
NMI backtrace for cpu 0
CPU: 0 PID: 2402 Comm: udevd Not tainted 6.10.0-rc4-syzkaller-00053-g819984a0dd36 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
Code: 34 b9 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 18 90 0b ff eb a2 e8 a1 90
RSP: 0018:ffffc900000075c8 EFLAGS: 00000006
RAX: dffffc0000000005 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff829a0f40 RDI: ffffffff8d719be0
RBP: ffffffff8d719ba0 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000003 R12: 0000000000000000
R13: ffffffff8d719ba0 R14: ffffffff8d719bf0 R15: 000000000000004b
FS: 00007fcc5c775c80(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31529000 CR3: 000000011695c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_port_in include/linux/serial_core.h:674 [inline]
serial8250_console_write+0x17d/0x1090 drivers/tty/serial/8250/8250_port.c:3357
console_emit_next_record kernel/printk/printk.c:2928 [inline]
console_flush_all+0x53c/0xd70 kernel/printk/printk.c:2994
console_unlock+0xae/0x290 kernel/printk/printk.c:3063
vprintk_emit kernel/printk/printk.c:2345 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2300
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:454
__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+0x17f6/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1687 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
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:unwind_next_frame+0xd/0x23a0 arch/x86/kernel/unwind_orc.c:469
Code: e8 98 69 90 00 e9 23 ff ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 41 55 41 54 55 <53> 48 89 fb 48 83 ec 40 e8 f6 0c 3e 00 48 89 da 48 b8 00 00 00 00
RSP: 0018:ffffc900014df940 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff810dc88f
RDX: ffff888116783a00 RSI: ffffffff810dc898 RDI: ffffc900014df978
RBP: ffffc900014dfa08 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900014df978
R13: ffffffff813f11b0 R14: ffffc900014dfa38 R15: ffff888116783a00
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x6e/0x70 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3941 [inline]
slab_alloc_node mm/slub.c:4001 [inline]
kmem_cache_alloc_noprof+0x11c/0x2b0 mm/slub.c:4008
getname_flags.part.0+0x50/0x4f0 fs/namei.c:139
getname_flags include/linux/audit.h:322 [inline]
getname+0x8f/0xe0 fs/namei.c:218
do_sys_openat2+0x104/0x1e0 fs/open.c:1399
do_sys_open fs/open.c:1420 [inline]
__do_sys_openat fs/open.c:1436 [inline]
__se_sys_openat fs/open.c:1431 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1431
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: 0033:0x7fcc5c8a09a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff5c4a8280 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000559caed17040 RCX: 00007fcc5c8a09a4
RDX: 0000000000080141 RSI: 0000559caecfa0d8 RDI: 00000000ffffff9c
RBP: 0000559caecfa0d8 R08: 00000000ffffffff R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141
R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff