syzbot

 sign-in | mailing list | source | docs
🐞 Open [569] 🐞 Fixed [66] 🐞 Invalid [207] ⬇ Missing Backports [40] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

WARNING in io_req_complete_failed

Status: upstream: reported C repro on 2023/03/19 07:17
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+61712a06f708f289dfdf@syzkaller.appspotmail.com
First crash: 411d, last: 251d
Fix bisection: the issue occurs on the latest tested release (bisect log)
Crash: WARNING in io_req_complete_failed (log)
Repro: C syz .config
  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/05/04 linux-6.1.y (ToT) ca48fc16c493 C [report] WARNING in io_req_complete_failed
2023/05/04 upstream (ToT) 1a5304fecee5 C Didn't crash
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in io_req_complete_failed io-uring C error 2 525d 521d 22/26 fixed on 2023/02/24 13:50
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/09/26 20:37 1h11m fix candidate upstream job log (0)
2023/06/07 19:34 35m bisect fix linux-6.1.y job log (0) log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 14 at io_uring/io_uring.c:872 io_req_complete_failed+0x1d7/0x290
Modules linked in:
CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 6.1.20-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: events io_fallback_req_func

RIP: 0010:io_req_complete_failed+0x1d7/0x290 io_uring/io_uring.c:872
Code: 6f 58 fd 4c 89 f7 ff d3 eb 05 e8 e4 6f 58 fd 4c 89 f7 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ae ea ff ff e8 c9 6f 58 fd <0f> 0b e9 d9 fe ff ff 89 e9 80 e1 07 38 c1 0f 8c 4d fe ff ff 48 89
RSP: 0018:ffffc90000137b60 EFLAGS: 00010293
RAX: ffffffff8431f157 RBX: ffff88802759a950 RCX: ffff88813fe69d40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8431f023 R09: ffffffff84356978
R10: 0000000000000003 R11: ffff88813fe69d40 R12: 00000000ffffff83
R13: ffff88802759a8c0 R14: ffff88802759a8c0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd1c2e5ff8 CR3: 0000000022983000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 io_fallback_req_func+0x10f/0x1fe io_uring/io_uring.c:250
 process_one_work+0x909/0x1380 kernel/workqueue.c:2289
 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436
 kthread+0x268/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Crashes (27):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/19 08:46 linux-6.1.y 7eaef76fbc46 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/08/25 22:01 linux-6.1.y 802aacbbffe2 03d9c195 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/05/08 08:19 linux-6.1.y ca48fc16c493 90c93c40 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/03/19 17:00 linux-6.1.y 7eaef76fbc46 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/08/25 17:39 linux-6.1.y 802aacbbffe2 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/07/09 10:43 linux-6.1.y 61fd484b2cf6 668cb1fa .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/06/27 08:17 linux-6.1.y e84a4e368abe 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/06/17 21:16 linux-6.1.y ca87e77a2ef8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/06/10 16:50 linux-6.1.y 2f3918bc53fb 49519f06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/04/29 17:28 linux-6.1.y ca1c9012c941 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/04/21 20:54 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/04/16 01:37 linux-6.1.y 0102425ac76b ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/04/11 14:46 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/04/09 00:20 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/03/19 07:17 linux-6.1.y 7eaef76fbc46 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_req_complete_failed
2023/08/13 14:07 linux-6.1.y 1321ab403b38 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/06/24 07:34 linux-6.1.y e84a4e368abe 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/06/17 21:34 linux-6.1.y ca87e77a2ef8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/29 03:48 linux-6.1.y ca1c9012c941 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/26 07:39 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/25 12:40 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/23 00:10 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/20 09:26 linux-6.1.y 0102425ac76b a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/20 02:16 linux-6.1.y 0102425ac76b a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/13 10:09 linux-6.1.y 543aff194ab6 82d5e53e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/04/02 15:07 linux-6.1.y 3b29299e5f60 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
2023/03/25 06:33 linux-6.1.y e3a87a10f259 9700afae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_req_complete_failed
* Struck through repros no longer work on HEAD.