Hello,
syzkaller hit the following crash on
045c5205823fc3cd4e5cafdedb2cc7d434424909
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
C reproducer is attached
syzkaller reproducer is attached. See https://goo.gl/kgGztJ
for information about syzkaller reproducers
EPT pointer = 0x00000001cbc2801e
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3247 at arch/x86/kvm/x86.c:7265
kvm_arch_vcpu_ioctl_run+0x213/0x5c70 arch/x86/kvm/x86.c:7265
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 3247 Comm: syzkaller201086 Not tainted
4.14.0-rc2-next-20170927+ #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:16 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:52
panic+0x1e4/0x417 kernel/panic.c:181
__warn+0x1c4/0x1d9 kernel/panic.c:542
report_bug+0x211/0x2d0 lib/bug.c:183
fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:178
do_trap_no_signal arch/x86/kernel/traps.c:212 [inline]
do_trap+0x260/0x390 arch/x86/kernel/traps.c:261
do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:298
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:311
invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x213/0x5c70 arch/x86/kvm/x86.c:7265
RSP: 0018:ffff8801cb807670 EFLAGS: 00010297
RAX: ffff8801cbf28280 RBX: ffff8801cbef1000 RCX: ffff8801cd678adc
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801cd6788f8
RBP: ffff8801cb807a40 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff10039700f72 R14: ffff8801d6928c00 R15: ffff8801cd6786c0
kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2551
vfs_ioctl fs/ioctl.c:45 [inline]
do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685
SYSC_ioctl fs/ioctl.c:700 [inline]
SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691
entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x446039
RSP: 002b:00007f520767adc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000000f
RBP: 0000000000000086 R08: 00007f520767b700 R09: 00007f520767b700
R10: 00007f520767b700 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffdb6946c2f R14: 00007f520767b9c0 R15: 0000000000000000
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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