cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (9429 ticks this GP) idle=0654/1/0x4000000000000000 softirq=38177/38180 fqs=5229 rcu: hardirqs softirqs csw/system rcu: number: 3 0 0 rcu: cputime: 0 47143 0 ==> 52490(ms) rcu: (t=10500 jiffies g=52021 q=279 ncpus=2) CPU: 1 PID: 2397 Comm: udevd Not tainted 6.7.0-rc2-syzkaller-00020-ge8d69c2b55af #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 79 de fa 48 89 df e8 6e f8 de fa f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 25 6b d3 fa 65 8b 05 c6 9d b3 79 85 c0 74 12 5b RSP: 0018:ffffc90000198a90 EFLAGS: 00000246 RAX: 0000000000000016 RBX: ffff88810579c000 RCX: 1ffffffff16e9f64 RDX: 0000000000000000 RSI: ffffffff8687cf60 RDI: ffffffff86a68980 RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff16e1f57 R10: ffffffff8b70fabf R11: ffffffff814df380 R12: ffff888105b72438 R13: ffff888114d72000 R14: dffffc0000000000 R15: 1ffff92000033182 FS: 00007f4a4053fc80(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff566102ba8 CR3: 000000010fbcf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] dummy_timer+0x1f55/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:2001 call_timer_fn+0x193/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x20a/0x94b kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 79 de fa 48 89 df e8 6e f8 de fa f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 25 6b d3 fa 65 8b 05 c6 9d b3 79 85 c0 74 12 5b RSP: 0018:ffffc900005bf768 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffffffff8c0ef8b8 RCX: 1ffffffff1267ba9 RDX: 0000000000000000 RSI: ffffffff8687cf60 RDI: ffffffff86a68980 RBP: 0000000000000206 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff89340697 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888121628e60 R14: ffffffff86895380 R15: 1ffff920000b7ef4 debug_object_activate+0x27f/0x490 lib/debugobjects.c:745 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline] __call_rcu_common.constprop.0+0x2c/0x790 kernel/rcu/tree.c:2666 dentry_free+0xc2/0x160 fs/dcache.c:377 __dentry_kill+0x4c1/0x640 fs/dcache.c:621 dentry_kill fs/dcache.c:745 [inline] dput+0x6de/0xf80 fs/dcache.c:913 lookup_fast+0x275/0x520 fs/namei.c:1660 walk_component+0x5b/0x5a0 fs/namei.c:1998 link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329 link_path_walk fs/namei.c:2254 [inline] path_openat+0x240/0x2c40 fs/namei.c:3775 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f4a4066a9a4 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:00007fff5a5ccb40 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f4a4066a9a4 RDX: 0000000000080000 RSI: 00007fff5a5ccc78 RDI: 00000000ffffff9c RBP: 00007fff5a5ccc78 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055b899a80b42 R14: 0000000000000001 R15: 0000000000000000 cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: nonzero urb status received: -71 cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 2-1:1.0: wdm_int_callback - usb_submit_urb failed with result -1