Hello, syzbot found the following issue on: HEAD commit: 64980441d269 Merge tag 'bpf-fixes' of git://git.kernel.org.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=145b31d4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=73696606574e3967 dashboard link: https://syzkaller.appspot.com/bug?extid=b1784a9a955885da51cd compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=110fcc0c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16340c0c580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b721c3fbaf59/disk-64980441.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b28b1e530885/vmlinux-64980441.xz kernel image: https://storage.googleapis.com/syzbot-assets/5aee07cc8b41/bzImage-64980441.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b1784a9a955885da51cd@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5841 at arch/x86/kvm/lapic.c:3407 kvm_apic_accept_events+0x341/0x490 arch/x86/kvm/lapic.c:3407 Modules linked in: CPU: 0 UID: 0 PID: 5841 Comm: syz-executor279 Not tainted 6.15.0-syzkaller-12058-g64980441d269 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:kvm_apic_accept_events+0x341/0x490 arch/x86/kvm/lapic.c:3407 Code: eb 0c e8 62 7b 72 00 eb 05 e8 5b 7b 72 00 45 31 ff 44 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 16 99 1a 0a cc e8 40 7b 72 00 90 <0f> 0b 90 e9 ec fd ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 4f RSP: 0018:ffffc9000433f5c8 EFLAGS: 00010293 RAX: ffffffff814de090 RBX: 0000000000000002 RCX: ffff88802a735a00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81463863 R10: dffffc0000000000 R11: fffffbfff1f4201f R12: 0000000000000002 R13: dffffc0000000000 R14: ffff888030df4600 R15: ffff888031a682d8 FS: 0000555566bb6380(0000) GS:ffff888125c55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002000 CR3: 0000000075360000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> vcpu_block arch/x86/kvm/x86.c:11298 [inline] vcpu_run+0x76f/0x6f70 arch/x86/kvm/x86.c:11335 kvm_arch_vcpu_ioctl_run+0xfc9/0x1940 arch/x86/kvm/x86.c:11656 kvm_vcpu_ioctl+0x95c/0xe90 virt/kvm/kvm_main.c:4461 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc83ec5e2f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff37b1fa98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fc83ec5e2f9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 0000200000bfe000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff37b1fac0 R13: 0000200000bff000 R14: 0000000000000004 R15: 0000000000000001 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
