syzbot


WARNING in kvm_arch_vcpu_ioctl_run (4)

Status: upstream: reported C repro on 2023/03/16 19:12
Subsystems: kvm (incorrect?)
Reported-by: syzbot+8accb43ddc6bd1f5713a@syzkaller.appspotmail.com
First crash: 24d, last: 23h50m

Cause bisection: failed (error log, bisect log)
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kvm_arch_vcpu_ioctl_run (2) kvm C 61018 1878d 1966d 4/24 fixed on 2018/03/13 09:44
upstream WARNING in kvm_arch_vcpu_ioctl_run C 20284 2003d 2068d 3/24 fixed on 2017/09/26 01:38
linux-4.14 WARNING in kvm_arch_vcpu_ioctl_run C inconclusive 71 189d 1365d 0/1 upstream: reported C repro on 2019/06/25 23:07
upstream WARNING in kvm_arch_vcpu_ioctl_run (3) kvm C done error 16157 26d 1820d 24/24 fixed on 2023/02/24 13:50
linux-4.19 WARNING in kvm_arch_vcpu_ioctl_run C error 116 98d 1374d 0/1 upstream: reported C repro on 2019/06/17 10:07

Sample crash report:
kvm_intel: KVM_SET_TSS_ADDR needs to be called before running vCPU
kvm_intel: set kvm_intel.dump_invalid_vmcs=1 to dump internal KVM state.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5082 at arch/x86/kvm/x86.c:11060 kvm_arch_vcpu_ioctl_run+0x2464/0x2af0 arch/x86/kvm/x86.c:11060
Modules linked in:
CPU: 0 PID: 5082 Comm: syz-executor178 Not tainted 6.2.0-syzkaller-13115-gee3f96b16468 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x2464/0x2af0 arch/x86/kvm/x86.c:11060
Code: 74 c3 00 e9 2f de ff ff 48 c7 c7 80 45 78 8e e8 02 74 c3 00 e9 a9 dc ff ff e8 38 f8 71 00 0f 0b e9 6c e0 ff ff e8 2c f8 71 00 <0f> 0b e9 a4 e0 ff ff e8 20 f8 71 00 be 08 00 00 00 65 48 8b 1c 25
RSP: 0018:ffffc90003b4fcb0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880236e0000 RSI: ffffffff81130274 RDI: 0000000000000005
RBP: ffff888021798000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90003bfac90 R14: ffff88802319a8c0 R15: ffff8880217982ec
FS:  000055555600f300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000073d95000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_vcpu_ioctl+0x574/0xfe0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4099
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff9dc1b2289
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcad58a378 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff9dc1b2289
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007ff9dc175ce0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9dc175d70
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce 2023/03/02 06:33 upstream ee3f96b16468 f8902b57 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/03/21 16:32 upstream 17214b70a159 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/03/18 02:40 upstream 8d3c682a5e3d 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/03/16 15:16 upstream 9c1bec9c0b08 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-qemu-upstream 2023/03/16 08:29 upstream 9c1bec9c0b08 18b58603 .config console log report info WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/03/16 08:26 upstream 9c1bec9c0b08 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce-smack-root 2023/03/16 08:23 upstream 9c1bec9c0b08 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/03/05 18:38 upstream b01fe98d34f3 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/03/02 00:40 upstream ee3f96b16468 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-qemu-upstream 2023/03/01 16:24 upstream c0927a7a5391 ef65e6cb .config console log report info WARNING in kvm_arch_vcpu_ioctl_run
ci-upstream-kasan-gce 2023/02/27 19:44 upstream f3a2439f20d9 e792ae78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in kvm_arch_vcpu_ioctl_run
ci-qemu-upstream-386 2023/03/03 21:24 upstream 2eb29d59ddf0 f8902b57 .config console log report info WARNING in kvm_arch_vcpu_ioctl_run
ci-qemu-upstream-386 2023/02/26 10:56 upstream 1ec35eadc3b4 630c6bc9 .config console log report info WARNING in kvm_arch_vcpu_ioctl_run
* Struck through repros no longer work on HEAD.