------------[ cut here ]------------ WARNING: CPU: 1 PID: 2748 at kernel/kcov.c:684 kcov_remote_start.cold+0xc/0x26 kernel/kcov.c:684 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 2748 Comm: blkid 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:ffff8881db309ae8 EFLAGS: 00010082 RAX: 0000000000000024 RBX: ffff8881d56abb80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288ddd RDI: ffffed103b66134f RBP: ffff8881d56abb80 R08: 0000000000000024 R09: ffffed103b665d58 R10: ffffed103b665d57 R11: ffff8881db32eabf R12: ffff8881c95e5b48 R13: ffff8881d55f8038 R14: dffffc0000000000 R15: ffff8881c85f0b00 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:unwind_get_return_address arch/x86/kernel/unwind_orc.c:311 [inline] RIP: 0010:unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:306 Code: 05 5b 31 c0 5d c3 48 8d 6b 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 75 32 48 8b 7b 48 e8 e6 f9 0b 00 <85> c0 74 d3 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 RSP: 0018:ffff8881c80a7808 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff8881c80a7820 RCX: 0000000000000001 RDX: 1ffff11039014f0d RSI: 0000000000000000 RDI: ffffffff8580007d RBP: ffff8881c80a7868 R08: 0000000000000001 R09: 0000000000000001 R10: 00000000000001d6 R11: 0000000000000001 R12: ffff8881c80a78d0 R13: 0000000000000000 R14: ffff8881c911c800 R15: 0000000000000001 arch_stack_walk+0x84/0xd0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9f/0xe0 kernel/stacktrace.c:123 save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:455 slab_free_hook mm/slub.c:1423 [inline] slab_free_freelist_hook mm/slub.c:1474 [inline] slab_free mm/slub.c:3016 [inline] kmem_cache_free+0xb9/0x380 mm/slub.c:3032 anon_vma_chain_free mm/rmap.c:134 [inline] unlink_anon_vmas+0x467/0x830 mm/rmap.c:419 free_pgtables+0x1ab/0x2f0 mm/memory.c:395 exit_mmap+0x287/0x4d0 mm/mmap.c:3146 __mmput kernel/fork.c:1064 [inline] mmput+0xce/0x3d0 kernel/fork.c:1085 exit_mm kernel/exit.c:547 [inline] do_exit+0x823/0x2c00 kernel/exit.c:866 do_group_exit+0x125/0x340 kernel/exit.c:983 __do_sys_exit_group kernel/exit.c:994 [inline] __se_sys_exit_group kernel/exit.c:992 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:992 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6a926501e8 Code: Bad RIP value. RSP: 002b:00007ffedc2ebfa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6a926501e8 RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 RBP: 00007f6a92925840 R08: 00000000000000e7 R09: ffffffffffffffa8 R10: 00007f6a9292b740 R11: 0000000000000246 R12: 00007f6a92925840 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..