device bridge0 entered promiscuous mode kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 4477 Comm: syz-executor6 Not tainted 4.16.0-rc7+ #370 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76 RSP: 0018:ffff8801db307ca8 EFLAGS: 00010006 RAX: ffff8801d8f1a700 RBX: 00000000001606e0 RCX: ffffffff811a6082 RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 RBP: ffff8801db307ca8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 R13: ffff8801d8f1a700 R14: ffff8801db31d130 R15: ffff8801db31d130 FS: 000000000231b940(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffefacce020 CR3: 00000001d8aca003 CR4: 00000000001626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __write_cr4 arch/x86/include/asm/paravirt.h:77 [inline] __cr4_set arch/x86/include/asm/tlbflush.h:254 [inline] cr4_clear_bits arch/x86/include/asm/tlbflush.h:277 [inline] kvm_cpu_vmxoff arch/x86/kvm/vmx.c:3658 [inline] hardware_disable+0x34a/0x4b0 arch/x86/kvm/vmx.c:3664 kvm_arch_hardware_disable+0x35/0xd0 arch/x86/kvm/x86.c:8281 hardware_disable_nolock+0x30/0x40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3289 flush_smp_call_function_queue+0x1f4/0x570 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0x13/0x30 kernel/smp.c:192 smp_call_function_single_interrupt+0x103/0x640 arch/x86/kernel/smp.c:295 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:879 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:773 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:795 [inline] RIP: 0010:lock_release+0x104/0xa40 kernel/locking/lockdep.c:3935 RSP: 0018:ffff8801d88ffb30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 RAX: dffffc0000000000 RBX: ffff8801d8f1a700 RCX: ffffffff819ccb99 RDX: 1ffffffff0f5957c RSI: 0000000000000000 RDI: ffffffff87acabe0 RBP: ffff8801d88ffc68 R08: 0000000000000000 R09: 0000000000000005 R10: ffff8801d88ffb48 R11: 0000000000000003 R12: ffff8801d88ffc40 R13: 0000000000000019 R14: 0000000000a3ead0 R15: 1ffff1003b11ff6c __might_fault+0x183/0x1d0 mm/memory.c:4571 _copy_to_user+0x2c/0xc0 lib/usercopy.c:25 copy_to_user include/linux/uaccess.h:155 [inline] put_timespec64+0xef/0x180 kernel/time/time.c:867 SYSC_clock_gettime kernel/time/posix-timers.c:1069 [inline] SyS_clock_gettime+0x12f/0x160 kernel/time/posix-timers.c:1057 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4576da RSP: 002b:0000000000a3eac8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4 RAX: ffffffffffffffda RBX: 0000000000000194 RCX: 00000000004576da RDX: 0000000000000000 RSI: 0000000000a3ead0 RDI: 0000000000000001 RBP: 0000000000a3f1a0 R08: 0000000000000001 R09: 000000000231b940 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000004ff R13: 0000000000000000 R14: 0000000000000010 R15: 000000000001f394 Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d RIP: native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76 RSP: ffff8801db307ca8 ---[ end trace 59145553b4546889 ]---