------------[ cut here ]------------ WARNING: CPU: 0 PID: 238 at kernel/kcov.c:684 kcov_remote_start.cold+0xc/0x26 kernel/kcov.c:684 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 238 Comm: udevd Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:kcov_remote_start.cold+0xc/0x26 kernel/kcov.c:684 Code: b0 f8 ff ff 48 c7 c7 d8 dd a4 86 e8 54 93 ea ff 0f 0b 5b 4c 89 e7 5d 41 5c e9 9d e7 2f 04 48 c7 c7 d8 dd a4 86 e8 3a 93 ea ff <0f> 0b e9 93 fd ff ff 48 c7 c7 d8 dd a4 86 e8 27 93 ea ff 0f 0b e9 RSP: 0018:ffff8881db209ae8 EFLAGS: 00010082 RAX: 0000000000000024 RBX: ffff8881d567ee80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288ddd RDI: ffffed103b64134f RBP: ffff8881d567ee80 R08: 0000000000000024 R09: ffffed103b645d58 R10: ffffed103b645d57 R11: ffff8881db22eabf R12: ffff8881cd145d88 R13: ffff8881d55f4238 R14: dffffc0000000000 R15: ffff8881cbadc200 dummy_timer+0x125f/0x301a drivers/usb/gadget/udc/dummy_hcd.c:1965 call_timer_fn+0x179/0x650 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x5cc/0x14b0 kernel/time/timer.c:1698 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:537 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1133 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:lock_acquire+0x16a/0x320 kernel/locking/lockdep.c:4416 Code: c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 95 01 00 00 c7 83 44 08 00 00 00 00 00 00 ff 34 24 9d <48> 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 15 60 18 dc 7e RSP: 0018:ffff8881d393fdb8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff8881d3e5e000 RCX: 0000000000000a3e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881d3e5e844 RBP: ffff8881d43925f8 R08: ffffffff88d24dd0 R09: fffffbfff11ad79d R10: fffffbfff11ad79c R11: ffffffff88d6bce7 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 percpu_down_read include/linux/percpu-rwsem.h:40 [inline] __sb_start_write+0x1f4/0x440 fs/super.c:1545 file_start_write include/linux/fs.h:2828 [inline] vfs_write+0x474/0x5c0 fs/read_write.c:557 ksys_write+0x127/0x250 fs/read_write.c:611 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f67c8145370 Code: 73 01 c3 48 8b 0d c8 4a 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d 85 a2 2b 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 0e 8a 01 00 48 89 04 24 RSP: 002b:00007fff4e68d8d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000001ecbc10 RCX: 00007f67c8145370 RDX: 0000000000000006 RSI: 000000000041f4f9 RDI: 000000000000000b RBP: 0000000001ee2740 R08: 000000000041f4f1 R09: 00007f67c819b7d0 R10: 7269762f73656369 R11: 0000000000000246 R12: 000000000000000b R13: 0000000000000000 R14: 0000000001ecbc10 R15: 0000000001ec9250 Kernel Offset: disabled Rebooting in 86400 seconds..