cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 5-1:21.0: nonzero urb status received: -71
cdc_wdm 5-1:21.0: wdm_int_callback - 0 bytes
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (8113 ticks this GP) idle=4754/1/0x4000000000000000 softirq=263211/263211 fqs=0
rcu: (t=10500 jiffies g=357605 q=287 ncpus=2)
rcu: rcu_preempt kthread starved for 10500 jiffies! g357605 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:29296 pid:15 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xaa9/0x2f10 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 2484 Comm: syz-executor.2 Not tainted 6.4.0-rc5-syzkaller-gd37537a1f7cf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 66 20 fe fa 48 89 ef e8 8e 8e fe fa 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 5f 4d f3 fa 65 8b 05 20 c9 d4 79 85 c0 74 0a 5b 5d c3 e8 2c d8
RSP: 0018:ffffc90000188b20 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff16a09a6
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff88810576c000 R08: 0000000000000001 R09: ffffffff8b4ca8df
R10: 0000000000000001 R11: ffffc9001141f000 R12: ffff888105b95440
R13: ffff88811cc6a800 R14: dffffc0000000000 R15: ffff888112f5c500
FS: 0000555556501400(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3072f000 CR3: 0000000139963000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
dummy_timer+0x1519/0x3400 drivers/usb/gadget/udc/dummy_hcd.c:2001
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
__run_timers kernel/time/timer.c:2022 [inline]
__run_timers kernel/time/timer.c:1995 [inline]
run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
__do_softirq+0x1c1/0x8e8 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu kernel/softirq.c:650 [inline]
irq_exit_rcu+0x11b/0x190 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:207
Code: 81 e1 00 01 00 00 65 48 8b 14 25 c0 a9 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 44 15 00 00 85 c0 74 2b 8b 82 20 15 00 00 <83> f8 02 75 20 48 8b 8a 28 15 00 00 8b 92 24 15 00 00 48 8b 01 48
RSP: 0018:ffffc900017a7b58 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888114675700 RSI: ffffffff81174a81 RDI: 0000000000000005
RBP: ffffc900017a7d1c R08: 0000000000000005 R09: 0000000000000030
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000040000005 R14: 0000000040000000 R15: ffff88812adf3a00
wait_consider_task+0x331/0x3ce0 kernel/exit.c:1411
do_wait_thread kernel/exit.c:1500 [inline]
do_wait+0x799/0xc30 kernel/exit.c:1617
kernel_wait4+0x150/0x260 kernel/exit.c:1780
__do_sys_wait4+0x13f/0x150 kernel/exit.c:1808
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1d6fe07d06
Code: 1f 44 00 00 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff5b1bc798 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000001182 RCX: 00007f1d6fe07d06
RDX: 0000000040000001 RSI: 00007fff5b1bc7fc RDI: 00000000ffffffff
RBP: 00007fff5b1bc7fc R08: 0000000000000d38 R09: 00007fff5b1dc080
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032
R13: 000000000033a02b R14: 0000000000000006 R15: 00007fff5b1bc860
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 27799 Comm: kworker/u4:3 Not tainted 6.4.0-rc5-syzkaller-gd37537a1f7cf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: events_unbound call_usermodehelper_exec_work
RIP: 0010:queued_write_lock_slowpath+0x14b/0x2d0 kernel/locking/qrwlock.c:85
Code: ff df 49 01 c7 41 83 c6 03 41 0f b6 07 41 38 c6 7c 08 84 c0 0f 85 46 01 00 00 8b 45 00 3d 00 01 00 00 74 19 f3 90 41 0f b6 07 <41> 38 c6 7c eb 84 c0 74 e7 48 89 ef e8 44 a5 65 fb eb dd 48 89 ef
RSP: 0018:ffffc9000e33f828 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 1ffff92001c67f06 RCX: ffffffff862f00dd
RDX: fffffbfff0f41411 RSI: 0000000000000004 RDI: ffffffff87a0a080
RBP: ffffffff87a0a080 R08: 0000000000000001 R09: ffffffff87a0a083
R10: fffffbfff0f41410 R11: 0000000000000001 R12: ffffffff87a0a084
R13: 00000000000000ff R14: 0000000000000003 R15: fffffbfff0f41410
FS: 0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f68f0ecf440 CR3: 0000000139963000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
queued_write_lock include/asm-generic/qrwlock.h:101 [inline]
do_raw_write_lock+0x1d2/0x3b0 kernel/locking/spinlock_debug.c:210
release_task+0x21d/0x1870 kernel/exit.c:253
wait_task_zombie kernel/exit.c:1210 [inline]
wait_consider_task+0x306d/0x3ce0 kernel/exit.c:1437
do_wait_pid kernel/exit.c:1568 [inline]
do_wait+0x690/0xc30 kernel/exit.c:1610
kernel_wait+0xa0/0x150 kernel/exit.c:1797
call_usermodehelper_exec_sync kernel/umh.c:137 [inline]
call_usermodehelper_exec_work+0xf9/0x180 kernel/umh.c:164
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
CPU: 1 PID: 2484 Comm: syz-executor.2 Not tainted 6.4.0-rc5-syzkaller-gd37537a1f7cf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 66 20 fe fa 48 89 ef e8 8e 8e fe fa 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 5f 4d f3 fa 65 8b 05 20 c9 d4 79 85 c0 74 0a 5b 5d c3 e8 2c d8
RSP: 0018:ffffc90000188b20 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff16a09a6
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff88810576c000 R08: 0000000000000001 R09: ffffffff8b4ca8df
R10: 0000000000000001 R11: ffffc9001141f000 R12: ffff888105b95440
R13: ffff88811cc6a800 R14: dffffc0000000000 R15: ffff888112f5c500
FS: 0000555556501400(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3072f000 CR3: 0000000139963000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
dummy_timer+0x1519/0x3400 drivers/usb/gadget/udc/dummy_hcd.c:2001
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
__run_timers kernel/time/timer.c:2022 [inline]
__run_timers kernel/time/timer.c:1995 [inline]
run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
__do_softirq+0x1c1/0x8e8 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu kernel/softirq.c:650 [inline]
irq_exit_rcu+0x11b/0x190 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:207
Code: 81 e1 00 01 00 00 65 48 8b 14 25 c0 a9 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 44 15 00 00 85 c0 74 2b 8b 82 20 15 00 00 <83> f8 02 75 20 48 8b 8a 28 15 00 00 8b 92 24 15 00 00 48 8b 01 48
RSP: 0018:ffffc900017a7b58 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888114675700 RSI: ffffffff81174a81 RDI: 0000000000000005
RBP: ffffc900017a7d1c R08: 0000000000000005 R09: 0000000000000030
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000040000005 R14: 0000000040000000 R15: ffff88812adf3a00
wait_consider_task+0x331/0x3ce0 kernel/exit.c:1411
do_wait_thread kernel/exit.c:1500 [inline]
do_wait+0x799/0xc30 kernel/exit.c:1617
kernel_wait4+0x150/0x260 kernel/exit.c:1780
__do_sys_wait4+0x13f/0x150 kernel/exit.c:1808
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1d6fe07d06
Code: 1f 44 00 00 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff5b1bc798 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000001182 RCX: 00007f1d6fe07d06
RDX: 0000000040000001 RSI: 00007fff5b1bc7fc RDI: 00000000ffffffff
RBP: 00007fff5b1bc7fc R08: 0000000000000d38 R09: 00007fff5b1dc080
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032
R13: 000000000033a02b R14: 0000000000000006 R15: 00007fff5b1bc860
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 5-1:21.0: nonzero urb status received: -71
cdc_wdm 5-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 5-1:21.0: nonzero urb status received: -71
cdc_wdm 5-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 5-1:21.0: nonzero urb status received: -71
cdc_wdm 5-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 5-1:21.0: nonzero urb status received: -71
cdc_wdm 5-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 5-1:21.0: nonzero urb status received: -71
cdc_wdm 5-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: nonzero urb status received: -71
cdc_wdm 4-1:21.0: wdm_int_callback - 0 bytes
cdc_wdm 4-1:21.0: wdm_int_callback - usb_submit_urb failed with result -1