2017-11-18 4:22 GMT+08:00 syzbot <bot+d9fbc5c299aa8a95ac07572b4f6e191c0f4efff6@xxxxxxxxxxxxxxxxxxxxxxxxx>: > Hello, > > syzbot has tested the proposed patch but the reproducer still triggered > crash: > WARNING in kvm_arch_vcpu_ioctl_run > > VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 > reason=80000021 qualification=0000000000000000 > IDTVectoring: info=00000000 errcode=00000000 > TSC Offset = 0xffffffeeb46bc6ac > EPT pointer = 0x00000001ce37601e > WARNING: CPU: 0 PID: 3023 at arch/x86/kvm/x86.c:7293 > kvm_arch_vcpu_ioctl_run+0x213/0x5d20 > Kernel panic - not syncing: panic_on_warn set ... > > CPU: 0 PID: 3023 Comm: syz-executor4 Not tainted 4.14.0-next-20171117+ #9 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > dump_stack+0x173/0x237 > panic+0x1e4/0x41c > __warn+0x1d9/0x1f0 > report_bug+0x20a/0x2d0 > fixup_bug.part.10+0x32/0x80 > do_error_trap+0x29c/0x370 > invalid_op+0x18/0x20 > RIP: 0010:kvm_arch_vcpu_ioctl_run+0x213/0x5d20 > RSP: 0018:ffff8801ce197680 EFLAGS: 00010293 > RAX: ffff8801ce588440 RBX: ffff8801d5b8f000 RCX: ffffffff810d4003 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801ce0e02b8 > RBP: ffff8801ce197a50 R08: 0000000000000001 R09: 0000000000000001 > R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 > R13: ffff8801ce0e0168 R14: ffff8801cec10980 R15: ffff8801ce0e0080 > kvm_vcpu_ioctl+0x619/0xf80 > do_vfs_ioctl+0x18b/0x13e0 > SyS_ioctl+0x7e/0xb0 > entry_SYSCALL_64_fastpath+0x1f/0x96 > RIP: 0033:0x452879 > RSP: 002b:00007f4bc97fdbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 0000000000000082 RCX: 0000000000452879 > RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000004 > RBP: 00007ffce1993510 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 > R13: 00007ffce199348f R14: 00007f4bc97fe9c0 R15: 0000000000000006 > Dumping ftrace buffer: > (ftrace buffer empty) > Kernel Offset: disabled > Rebooting in 86400 seconds.. I will have a look. Regards, Wanpeng Li
