------------[ cut here ]------------ WARNING: CPU: 1 PID: 2764 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: 2764 Comm: syz-executor.0 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: ffff8881d55ff700 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288ddd RDI: ffffed103b66134f RBP: ffff8881d55ff700 R08: 0000000000000024 R09: ffffed103b665d58 R10: ffffed103b665d57 R11: ffff8881db32eabf R12: ffff8881cb348308 R13: ffff8881d5600038 R14: dffffc0000000000 R15: ffff8881ca0cae00 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:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:31 [inline] RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:27 [inline] RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:300 [inline] RIP: 0010:rcu_is_watching+0x41/0x80 kernel/rcu/tree.c:894 Code: 7e 48 8d ab d8 00 00 00 be 04 00 00 00 48 89 ef e8 e4 23 38 00 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 <48> 89 e8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 15 8b 83 d8 00 00 RSP: 0018:ffff8881c85776b8 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8881db333b00 RCX: ffffffff812c3a9c RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881db333bd8 RBP: ffff8881db333bd8 R08: 0000000000000000 R09: ffffed103b66677c R10: ffffed103b66677b R11: ffff8881db333bdb R12: 0000000000000000 R13: ffffea00071e3808 R14: 0000000000000000 R15: dead000000000100 rcu_read_lock include/linux/rcupdate.h:593 [inline] lock_page_memcg+0x137/0x230 mm/memcontrol.c:2086 page_remove_file_rmap mm/rmap.c:1218 [inline] page_remove_rmap+0x1ed/0x5a0 mm/rmap.c:1303 zap_pte_range mm/memory.c:1059 [inline] zap_pmd_range mm/memory.c:1161 [inline] zap_pud_range mm/memory.c:1190 [inline] zap_p4d_range mm/memory.c:1211 [inline] unmap_page_range+0xb6e/0x1970 mm/memory.c:1232 unmap_single_vma+0x196/0x300 mm/memory.c:1277 unmap_vmas+0x122/0x270 mm/memory.c:1309 exit_mmap+0x278/0x4d0 mm/mmap.c:3145 __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 get_signal+0x466/0x23d0 kernel/signal.c:2734 do_signal+0x88/0x14e0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x1a2/0x200 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f986baa4cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000075bf28 RCX: 0000000000459879 RDX: 00000000004c6ced RSI: 0000000000000081 RDI: 000000000075bf2c RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007ffe06e1c9bf R14: 00007f986baa59c0 R15: 000000000075bf2c Kernel Offset: disabled Rebooting in 86400 seconds..