------------[ cut here ]------------
WARNING: CPU: 1 PID: 2523 at kernel/kcov.c:870 kcov_remote_start+0x274/0x6e0 kernel/kcov.c:870
Modules linked in:
CPU: 1 PID: 2523 Comm: syz-executor.1 Not tainted 6.10.0-rc2-syzkaller-00024-g5821bf2dffbe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:kcov_remote_start+0x274/0x6e0 kernel/kcov.c:870
Code: c0 22 49 89 47 08 e9 87 00 00 00 f6 c4 01 0f 85 06 fe ff ff e9 dc fd ff ff 44 8b 95 54 15 00 00 45 85 d2 0f 84 d5 fe ff ff 90 <0f> 0b 90 e9 b9 00 00 00 65 8b 05 55 72 b0 7e 49 c7 c0 2e e4 04 88
RSP: 0018:ffffc900001b8550 EFLAGS: 00010002
RAX: 0000000000010101 RBX: 000000000002d428 RCX: ffffffff813080be
RDX: 0000000000000002 RSI: ffffffff86c7d9a0 RDI: ffffffff86e78600
RBP: ffff888114060000 R08: 0000000000000000 R09: fffffbfff19989a6
R10: 0000000000000001 R11: 0000000000000002 R12: ffff8881f652d428
R13: 0000000000000000 R14: 0100000000000005 R15: ffff888114060000
FS: 000055557a077480(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31232000 CR3: 00000001310ee000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kcov_remote_start_usb include/linux/kcov.h:53 [inline]
kcov_remote_start_usb_softirq include/linux/kcov.h:66 [inline]
__usb_hcd_giveback_urb+0x331/0x5c0 drivers/usb/core/hcd.c:1647
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1732
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+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:queue_work_on+0x98/0x140 kernel/workqueue.c:2415
Code: e8 3d a7 31 00 48 85 ed 75 44 e8 03 ac 31 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 21 a7 31 00 48 85 db 0f 85 8d 00 00 00 e3 ab 31 00 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc e8
RSP: 0018:ffffc900001b8ac8 EFLAGS: 00000287
RAX: 000000000000073c RBX: 0000000000000000 RCX: ffffc90001203000
RDX: 0000000000040000 RSI: ffffffff812197b2 RDI: 0000000000000007
RBP: 0000000000000200 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000001
R13: 0000000000000008 R14: ffff888104ef4c00 R15: 0000000000000002
queue_work include/linux/workqueue.h:621 [inline]
kick_hub_wq drivers/usb/core/hub.c:724 [inline]
kick_hub_wq+0x145/0x2a0 drivers/usb/core/hub.c:705
hub_irq+0x322/0x440 drivers/usb/core/hub.c:804
__usb_hcd_giveback_urb+0x364/0x5c0 drivers/usb/core/hcd.c:1648
usb_giveback_urb_bh+0x28f/0x570 drivers/usb/core/hcd.c:1682
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
bh_worker+0x5a4/0x8a0 kernel/workqueue.c:3572
workqueue_softirq_action+0x12c/0x190 kernel/workqueue.c:3599
tasklet_hi_action+0x17/0x70 kernel/softirq.c:816
handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 2c 9c fa 48 89 df e8 5e a9 9c fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 95 1f 91 fa 65 8b 05 16 8c 6e 79 85 c0 74 16 5b
RSP: 0018:ffffc9000150fc50 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffff8881f652c7c0 RCX: 1ffffffff137b5c1
RDX: 0000000000000000 RSI: ffffffff86c7d6a0 RDI: ffffffff86e78600
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff89bde797 R11: ffffffff86ca5a00 R12: dffffc0000000000
R13: ffffc9000150fdb8 R14: ffffffff86952d3a R15: ffff888114060018
hrtimer_start_expires include/linux/hrtimer.h:289 [inline]
hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1949 [inline]
do_nanosleep+0x1f3/0x510 kernel/time/hrtimer.c:2025
hrtimer_nanosleep+0x1ab/0x440 kernel/time/hrtimer.c:2081
common_nsleep+0xa1/0xd0 kernel/time/posix-timers.c:1350
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1373 [inline]
__x64_sys_clock_nanosleep+0x344/0x4a0 kernel/time/posix-timers.c:1373
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: 0033:0x7ff8975ec2b3
Code: 00 00 00 00 0f 1f 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 4e fc 0d 00 00 74 14 b8 e6 00 00 00 0f 05 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffce086da28 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 00007ff8975ec2b3
RDX: 00007ffce086da40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffce086dabc R08: 0000000000004548 R09: 00007ff8976ce080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032
R13: 0000000000019436 R14: 0000000000018fc5 R15: 0000000000000002
----------------
Code disassembly (best guess):
0: e8 3d a7 31 00 call 0x31a742
5: 48 85 ed test %rbp,%rbp
8: 75 44 jne 0x4e
a: e8 03 ac 31 00 call 0x31ac12
f: 9c pushf
10: 5b pop %rbx
11: 81 e3 00 02 00 00 and $0x200,%ebx
17: 31 ff xor %edi,%edi
19: 48 89 de mov %rbx,%rsi
1c: e8 21 a7 31 00 call 0x31a742
21: 48 85 db test %rbx,%rbx
24: 0f 85 8d 00 00 00 jne 0xb7
* 2a: e8 e3 ab 31 00 call 0x31ac12 <-- trapping instruction
2f: 44 89 e0 mov %r12d,%eax
32: 5b pop %rbx
33: 5d pop %rbp
34: 41 5c pop %r12
36: 41 5d pop %r13
38: 41 5e pop %r14
3a: c3 ret
3b: cc int3
3c: cc int3
3d: cc int3
3e: cc int3
3f: e8 .byte 0xe8