syzbot


WARNING in vmx_handle_exit

Status: upstream: reported C repro on 2024/04/02 14:40
Subsystems: kvm
[Documentation on labels]
Reported-by: syzbot+988d9efcdf137bc05f66@syzkaller.appspotmail.com
First crash: 20d, last: 6d04h
Cause bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kvm?] WARNING in vmx_handle_exit 0 (1) 2024/04/02 14:40
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in vmx_handle_exit 1 1126d 1126d 0/1 auto-closed as invalid on 2021/07/19 10:58
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/04/15 04:10 15m retest repro upstream report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5391 at arch/x86/kvm/vmx/vmx.c:6436 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6436 [inline]
WARNING: CPU: 0 PID: 5391 at arch/x86/kvm/vmx/vmx.c:6436 vmx_handle_exit+0x14dc/0x1f40 arch/x86/kvm/vmx/vmx.c:6593
Modules linked in:
CPU: 0 PID: 5391 Comm: syz-executor617 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6436 [inline]
RIP: 0010:vmx_handle_exit+0x14dc/0x1f40 arch/x86/kvm/vmx/vmx.c:6593
Code: 00 00 e8 47 53 6d 00 4c 89 f7 e8 ef da f1 ff 41 bf 01 00 00 00 e9 b1 ed ff ff e8 2f 53 6d 00 e9 45 f4 ff ff e8 25 53 6d 00 90 <0f> 0b 90 42 80 7c 25 00 00 74 08 4c 89 f7 e8 31 a2 d0 00 49 8b 2e
RSP: 0018:ffffc9000595f418 EFLAGS: 00010293
RAX: ffffffff8127a22b RBX: 0000000000000000 RCX: ffff888024ba0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100f531518 R08: ffffffff81278fba R09: 1ffffffff259c2ba
R10: dffffc0000000000 R11: fffffbfff259c2bb R12: dffffc0000000000
R13: ffff88807a98cb90 R14: ffff88807a98a8c0 R15: 0000000080000021
FS:  00007f84df9ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000015efe000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vcpu_enter_guest arch/x86/kvm/x86.c:11080 [inline]
 vcpu_run+0x5ca0/0x8790 arch/x86/kvm/x86.c:11184
 kvm_arch_vcpu_ioctl_run+0xa7e/0x1920 arch/x86/kvm/x86.c:11410
 kvm_vcpu_ioctl+0x7f5/0xd00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4447
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:904 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f84e0287289
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 1d 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f84df9ff218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000003f RCX: 00007f84e0287289
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f84e031d038 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f84e031d030
R13: 00007f84e031d03c R14: 00007f84e02d74f8 R15: 6d766b2f7665642f
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/01 03:51 upstream 480e035fc4c7 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in vmx_handle_exit
2024/04/01 02:23 upstream 18737353cca0 6baf5069 .config console log report syz [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in vmx_handle_exit
2024/04/01 02:12 upstream 18737353cca0 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in vmx_handle_exit
* Struck through repros no longer work on HEAD.