From: syzbot <syzbot+9dcd0a11dc9703a49511@syzkaller.appspotmail.com>
To: kartikey406@gmail.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [kvm-x86?] WARNING in kvm_check_and_inject_events
Date: Sat, 11 Jul 2026 21:57:02 -0700 [thread overview]
Message-ID: <6a531e9e.278cdcd2.e885.0019.GAE@google.com> (raw)
In-Reply-To: <20260712043621.31248-1-kartikey406@gmail.com>
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
WARNING in kvm_check_and_inject_events
KVM_DEBUG: has_extint called output=1 IRR0=03 IRR1=00 IMR0=06 IMR1=00
KVM_DEBUG: has_extint=FALSE returning -1! output=0
------------[ cut here ]------------
irq == -1
WARNING: arch/x86/kvm/x86.c:10800 at kvm_check_and_inject_events+0xf1e/0x1070 arch/x86/kvm/x86.c:10800, CPU#3: syz.1.28/6425
Modules linked in:
CPU: 3 UID: 0 PID: 6425 Comm: syz.1.28 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:kvm_check_and_inject_events+0xf1e/0x1070 arch/x86/kvm/x86.c:10800
Code: 00 48 8b 44 24 20 48 0d 00 01 01 00 48 89 44 24 10 e9 35 fd ff ff e8 a1 4e 7e 00 90 0f 0b 90 e9 b7 fe ff ff e8 93 4e 7e 00 90 <0f> 0b 90 e9 2e f8 ff ff e8 45 c8 ee 00 e9 ae f6 ff ff 48 8b 7c 24
RSP: 0018:ffffc900032e7a20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888058cea9c0 RCX: ffffffff818b8bac
RDX: ffff88802cef8000 RSI: ffffffff818b8ccd RDI: ffff88802cef8000
RBP: 00000000ffffffff R08: 0000000000000005 R09: 00000000ffffffff
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff888058ceb5ec
R13: 0000000000000001 R14: ffff888058ceaca8 R15: ffff888058ceb2f8
FS: 00007efc7b1fe6c0(0000) GS:ffff8880d60e8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc7b1dcff8 CR3: 0000000026a63000 CR4: 0000000000352ef0
Call Trace:
<TASK>
vcpu_enter_guest arch/x86/kvm/x86.c:11296 [inline]
vcpu_run+0xf1d/0x5d50 arch/x86/kvm/x86.c:11707
kvm_arch_vcpu_ioctl_run+0x5b6/0x1890 arch/x86/kvm/x86.c:12062
kvm_vcpu_ioctl+0x730/0x1700 virt/kvm/kvm_main.c:4470
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl fs/ioctl.c:583 [inline]
__x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc7bb9de59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc7b1fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007efc7be25fa0 RCX: 00007efc7bb9de59
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007efc7bc33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efc7be26038 R14: 00007efc7be25fa0 R15: 00007fff3d01fdc8
</TASK>
Tested on:
commit: 44696aa3 Merge tag 'input-for-v7.2-rc2' of git://git.k..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=17131b89580000
kernel config: https://syzkaller.appspot.com/x/.config?x=48ef5c5c0f192153
dashboard link: https://syzkaller.appspot.com/bug?extid=9dcd0a11dc9703a49511
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch: https://syzkaller.appspot.com/x/patch.diff?x=1376a0b9580000
next parent reply other threads:[~2026-07-12 4:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260712043621.31248-1-kartikey406@gmail.com>
2026-07-12 4:57 ` syzbot [this message]
[not found] <20260712020904.29847-1-kartikey406@gmail.com>
2026-07-12 2:32 ` [syzbot] [kvm-x86?] WARNING in kvm_check_and_inject_events syzbot
2026-07-09 16:33 syzbot
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