------------[ cut here ]------------
WARNING: CPU: 0 PID: 15 at kernel/kcov.c:870 kcov_remote_start+0x274/0x6e0 kernel/kcov.c:870
Modules linked in:
CPU: 0 PID: 15 Comm: ksoftirqd/0 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:ffffc90000007570 EFLAGS: 00010002
RAX: 0000000000010102 RBX: 000000000002d428 RCX: ffffffff813080be
RDX: 0000000000000002 RSI: ffffffff86c7d9a0 RDI: ffffffff86e78600
RBP: ffff8881016a3a00 R08: 0000000000000000 R09: fffffbfff19989a6
R10: 0000000000000001 R11: 0000000000000002 R12: ffff8881f642d428
R13: 0000000000000000 R14: 0100000000000003 R15: ffff8881016a3a00
FS: 0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3102b000 CR3: 0000000124228000 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:__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:ffffc90000007ae0 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff888109794378 RCX: 1ffffffff199cd2a
RDX: 0000000000000000 RSI: ffffffff86c7d6a0 RDI: ffffffff86e78600
RBP: 0000000000000287 R08: 0000000000000001 R09: fffffbfff19989a6
R10: ffffffff8ccc4d37 R11: 0000000000000004 R12: 0000000000000287
R13: ffff888109794378 R14: 0000000000000001 R15: 0000000000000002
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
hub_resubmit_irq_urb+0xe7/0x190 drivers/usb/core/hub.c:694
hub_irq+0x32f/0x440 drivers/usb/core/hub.c:807
__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:finish_task_switch.isra.0+0x1e5/0xa40 kernel/sched/core.c:5282
Code: 0f 85 ad 07 00 00 8b 0d 01 19 97 08 85 c9 0f 85 cb 02 00 00 48 89 df e8 29 5a 6e 05 e8 74 a2 33 00 fb 65 48 8b 1d 6b e7 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:ffffc900000ffce0 EFLAGS: 00000202
RAX: 00000000001063cd RBX: ffff8881016a3a00 RCX: 1ffffffff137b5c1
RDX: 0000000000000000 RSI: ffffffff86c7d6a0 RDI: ffffffff86e78600
RBP: ffffc900000ffd28 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff89bde797 R11: 0000000000000000 R12: ffff8881f643d898
R13: ffff88810fedba00 R14: 0000000000000000 R15: ffff8881f643d898
context_switch kernel/sched/core.c:5411 [inline]
__schedule+0xcae/0x3170 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
smpboot_thread_fn+0x2d5/0xa10 kernel/smpboot.c:160
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
----------------
Code disassembly (best guess):
0: f5 cmc
1: 53 push %rbx
2: 48 8b 74 24 10 mov 0x10(%rsp),%rsi
7: 48 89 fb mov %rdi,%rbx
a: 48 83 c7 18 add $0x18,%rdi
e: e8 76 2c 9c fa call 0xfa9c2c89
13: 48 89 df mov %rbx,%rdi
16: e8 5e a9 9c fa call 0xfa9ca979
1b: f7 c5 00 02 00 00 test $0x200,%ebp
21: 75 23 jne 0x46
23: 9c pushf
24: 58 pop %rax
25: f6 c4 02 test $0x2,%ah
28: 75 37 jne 0x61
* 2a: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction
2f: e8 95 1f 91 fa call 0xfa911fc9
34: 65 8b 05 16 8c 6e 79 mov %gs:0x796e8c16(%rip),%eax # 0x796e8c51
3b: 85 c0 test %eax,%eax
3d: 74 16 je 0x55
3f: 5b pop %rbx