syzbot


WARNING in kvm_put_kvm (2)

Status: auto-obsoleted due to no activity on 2025/03/14 05:33
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+4f8d3ac3727ffc0ecd8a@syzkaller.appspotmail.com
First crash: 163d, last: 78d
Discussions (4)
Title Replies (including bot) Last reply
[syzbot] [kvm?] WARNING in kvm_put_kvm (2) 1 (2) 2025/01/16 18:01
[syzbot] Monthly kvm report (Jan 2025) 0 (1) 2025/01/13 10:54
[syzbot] Monthly kvm report (Dec 2024) 0 (1) 2024/12/11 11:27
[syzbot] Monthly kvm report (Nov 2024) 0 (1) 2024/11/01 12:35
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kvm_put_kvm kvm 14 279d 288d 0/28 closed as invalid on 2024/08/16 18:20

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6091 at kernel/rcu/srcutree.c:681 cleanup_srcu_struct+0x404/0x4d0 kernel/rcu/srcutree.c:681
Modules linked in:
CPU: 0 UID: 0 PID: 6091 Comm: syz.2.27 Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:cleanup_srcu_struct+0x404/0x4d0 kernel/rcu/srcutree.c:681
Code: 02 81 00 48 c7 03 00 00 00 00 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 0f 0b 90 eb e7 90 0f 0b 90 eb e1 90 <0f> 0b 90 eb db 90 0f 0b 90 eb 0a 90 0f 0b 90 eb 04 90 0f 0b 90 48
RSP: 0018:ffffc90004b7fc78 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff8880295cf180 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffe8ffffd6a9d8
RBP: 0000000000000001 R08: ffffe8ffffd6a9df R09: 1ffffd1ffffad53b
R10: dffffc0000000000 R11: fffff91ffffad53c R12: dffffc0000000000
R13: ffffc90004d2a8f8 R14: ffffc90004d21000 R15: ffff8880295cf000
FS:  000055558ccd5500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555f158608 CR3: 000000002afb4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_destroy_vm virt/kvm/kvm_main.c:1310 [inline]
 kvm_put_kvm+0xd45/0xf60 virt/kvm/kvm_main.c:1340
 kvm_vm_release+0x43/0x50 virt/kvm/kvm_main.c:1363
 __fput+0x3e9/0x9f0 fs/file_table.c:450
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0ca2385d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdf3a6fa08 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000015bea RCX: 00007f0ca2385d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f0ca2577ba0 R08: 0000000000000001 R09: 00007ffdf3a6fcff
R10: 00007f0ca2200000 R11: 0000000000000246 R12: 00000000000164e3
R13: 00007f0ca2575fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>

Crashes (18):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/13 05:32 linux-next 7b4b9bf203da 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2025/01/06 14:13 linux-next 8155b4ef3466 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/31 20:56 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/27 11:03 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/27 07:03 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/25 17:15 linux-next 8155b4ef3466 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/25 17:00 linux-next 8155b4ef3466 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/24 13:15 linux-next 8155b4ef3466 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/21 23:23 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/21 02:35 linux-next 8155b4ef3466 1ac6aa80 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/11 03:20 linux-next af2ea8ab7a54 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/12/09 17:10 linux-next af2ea8ab7a54 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/11/30 15:36 linux-next f486c8aa16b8 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/11/28 05:13 linux-next f486c8aa16b8 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/11/26 04:40 linux-next 85a2dd7d7c81 a84878fc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/11/21 04:11 linux-next ac24e26aa08f 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/11/20 03:18 linux-next 414c97c966b6 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
2024/10/20 06:26 linux-next 15e7d45e786a cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kvm_put_kvm
* Struck through repros no longer work on HEAD.