WARNING: CPU: 0 PID: 3209 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3209 Comm: syzkaller192514 Not tainted 4.15.0-rc4-next-20171221+ #78 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 __warn+0x1dc/0x200 kernel/panic.c:547 report_bug+0x211/0x2d0 lib/bug.c:184 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:177 fixup_bug arch/x86/kernel/traps.c:246 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079 RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375 RSP: 0018:ffff8801c3daf560 EFLAGS: 00010293 RAX: ffff8801c3e7e1c0 RBX: ffff8801c0088000 RCX: ffffffff810df6b7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801ce46a060 RBP: ffff8801c3daf8f0 R08: 1ffff10039c8dea3 R09: 0000000000000001 R10: ffff8801c3daf540 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801c0e5fb00 R14: ffff8801ce469e40 R15: ffff8801ce469e40 kvm_vcpu_ioctl+0x6f1/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2554 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x448c69 RSP: 002b:00007f20ff210d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000006decb4 RCX: 0000000000448c69 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 00000000000000a6 RBP: 00000000006decb0 R08: 65732f636f72702f R09: 65732f636f72702f R10: 65732f636f72702f R11: 0000000000000246 R12: 00007f20ff210d20 R13: 6163326c2f74656e R14: 6d766b2f7665642f R15: 0000000000000009 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: 3165 Comm: syzkaller192514 Not tainted 4.15.0-rc4-next-20171221+ #78 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:ffff8801db307e88 EFLAGS: 00010086 RAX: dffffc0000000000 RBX: 00000000001606e0 RCX: 0000000000000001 RDX: 1ffffffff0c99084 RSI: 0000000000000000 RDI: 00000000001606e0 RBP: ffff8801db307e88 R08: ffff8801db307f40 R09: ffff8801db307f80 R10: ffff8801c70a7378 R11: 0000000000000000 R12: 0000000000000086 R13: 1ffff1003b660fd4 R14: ffff8801ca7fe5c0 R15: ffff8801db307fc0 FS: 00007f20ff2b7700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020ed2000 CR3: 00000001d5005001 CR4: 00000000001626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __write_cr4 arch/x86/include/asm/paravirt.h:76 [inline] __cr4_set arch/x86/include/asm/tlbflush.h:252 [inline] cr4_clear_bits arch/x86/include/asm/tlbflush.h:275 [inline] cpu_vmxoff arch/x86/include/asm/virtext.h:44 [inline] __cpu_emergency_vmxoff arch/x86/include/asm/virtext.h:59 [inline] cpu_emergency_vmxoff arch/x86/include/asm/virtext.h:67 [inline] smp_reboot_interrupt+0x3ea/0x510 arch/x86/kernel/smp.c:179 reboot_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:913 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:659 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:664 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x364/0x560 kernel/smp.c:302 RSP: 0018:ffff8801c70a7200 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff07 RAX: ffff8801ca7fe5c0 RBX: 1ffff10038e14e48 RCX: ffffffff81650c82 RDX: 0000000000000000 RSI: 00000000000000fb RDI: ffff8801c70a72f8 RBP: ffff8801c70a7350 R08: 0000000000000000 R09: 1ffff10038e14d8f R10: ffff8801c70a7378 R11: 0000000000000000 R12: ffff8801c70a72f8 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffed0038e14e54 smp_call_function_many+0x773/0x930 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0x3d/0x1b0 kernel/smp.c:602 cpa_flush_range arch/x86/mm/pageattr.c:198 [inline] change_page_attr_set_clr+0xabe/0xf60 arch/x86/mm/pageattr.c:1512 change_page_attr_clear arch/x86/mm/pageattr.c:1530 [inline] set_memory_ro+0x2e/0x40 arch/x86/mm/pageattr.c:1759 bpf_prog_lock_ro include/linux/filter.h:629 [inline] bpf_prog_select_runtime+0x1c4/0x5d0 kernel/bpf/core.c:1445 bpf_migrate_filter net/core/filter.c:1061 [inline] bpf_prepare_filter+0x92f/0xdf0 net/core/filter.c:1107 bpf_prog_create_from_user+0x1a8/0x2b0 net/core/filter.c:1201 seccomp_prepare_filter kernel/seccomp.c:386 [inline] seccomp_prepare_user_filter kernel/seccomp.c:421 [inline] seccomp_set_mode_filter kernel/seccomp.c:856 [inline] do_seccomp+0x8a7/0x21f0 kernel/seccomp.c:929 SYSC_seccomp kernel/seccomp.c:943 [inline] SyS_seccomp+0x24/0x30 kernel/seccomp.c:940 do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x448c69 RSP: 002b:00007f20ff2b6d18 EFLAGS: 00000293 ORIG_RAX: 000000000000013d RAX: ffffffffffffffda RBX: 00000000006dec3c RCX: 0000000000448c69 RDX: 00000000207f7ff0 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 00000000006dec38 R08: 65732f636f72702f R09: 65732f636f72702f R10: 65732f636f72702f R11: 0000000000000293 R12: 00007f20ff2b6d20 R13: 6163326c2f74656e R14: 6d766b2f7665642f R15: 0000000000000009 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: ffff8801db307e88 ---[ end trace 0370f67036446c24 ]--- Shutting down cpus with NMI invalid opcode: 0000 [#2] SMP KASAN Dumping ftrace buffer: (ftrace[ k ed 29in.3: 93 ---[ end trace 0370f67036446c25 ]--- Rebooting in 86400 seconds..