syzbot

 sign-in | mailing list | source | docs
🐞 Open [461]
🐞 Fixed [21]
🐞 Invalid [181]
⬇ Missing Backports [18]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

lost connection to test machine

Status: upstream: reported C repro on 2025/06/16 17:10
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+4305e0b617aee2c36ebc@syzkaller.appspotmail.com
First crash: 284d, last: 11h55m
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2025/06/30 upstream (ToT) d0b3b7b22dfa C [report] no output from test machine
▶ ▼ Similar bugs (23)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-44 lost connection to test machine (2) -1 6 3031d never 0/2 closed as invalid on 2017/12/09 08:45
android-5-15 lost connection to test machine origin:lts -1 C 404797 1h07m 1270d 0/2 premoderation: reported C repro on 2022/10/05 10:32
android-44 lost connection to test machine (3) -1 C 259 3013d 3030d 0/2 closed as invalid on 2017/12/27 12:57
linux-4.14 lost connection to test machine -1 56267 1144d 2543d 0/1 upstream: reported on 2019/04/11 15:39
android-44 lost connection to test machine (4) -1 C 62294 2306d 2540d 0/2 public: reported C repro on 2019/04/14 00:00
android-49 lost connection to test machine (3) -1 C 109581 2306d 2540d 0/3 public: reported C repro on 2019/04/14 08:51
android-44 lost connection to test machine -1 79 3061d 3061d 0/2 closed as invalid on 2017/11/09 08:47
android-6-1 lost connection to test machine origin:upstream -1 C 316624 now 1053d 0/2 premoderation: reported C repro on 2023/05/10 12:05
android-6-12 lost connection to test machine origin:downstream -1 C 40251 now 282d 0/1 premoderation: reported C repro on 2025/06/19 05:52
linux-4.4 lost connection to test machine -1 426 2378d 2538d 0/1 auto-closed as invalid on 2019/12/22 11:26
upstream lost connection to test machine (4) -1 C 1189 2951d 2966d 4/29 fixed on 2018/02/26 20:04
android-5-10 lost connection to test machine -1 C 715167 now 1607d 0/2 upstream: reported C repro on 2021/11/02 11:48
android-414 lost connection to test machine -1 C 23644 2306d 2542d 0/1 public: reported C repro on 2019/04/12 00:01
android-49 lost connection to test machine -1 C 8069 3061d 3061d 0/3 closed as invalid on 2017/11/09 10:06
upstream lost connection to test machine (2) -1 C 15874 3013d 3061d 0/29 closed as invalid on 2017/12/27 12:57
android-54 lost connection to test machine -1 syz 136755 306d 2269d 0/2 upstream: reported syz repro on 2020/01/10 15:22
upstream lost connection to test machine (5) -1 C error 3012270 5m 2325d 0/29 moderation: reported C repro on 2019/11/15 12:45
upstream lost connection to test machine (3) -1 C 4251 2973d 3012d 4/29 fixed on 2018/02/04 23:45
upstream lost connection to test machine -1 C 25017 3061d 3061d 0/29 closed as invalid on 2017/11/09 10:06
linux-6.1 lost connection to test machine origin:upstream -1 C unreliable 79325 11h57m 1116d 0/3 upstream: reported C repro on 2023/03/08 14:43
android-49 lost connection to test machine (2) -1 C 2946 3013d 3061d 0/3 closed as invalid on 2017/12/27 12:57
linux-5.15 lost connection to test machine origin:lts-only -1 C done 30564 6h00m 1116d 0/3 upstream: reported C repro on 2023/03/08 15:21
linux-4.19 lost connection to test machine -1 30440 1146d 2543d 0/1 upstream: reported on 2019/04/10 19:39
Crashes (16793):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/08 02:05 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan lost connection to test machine
2025/06/29 21:50 linux-6.6.y 3f5b4c104b7d fc9d8ee5 .config console log syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2025/06/27 03:20 linux-6.6.y 6282921b6825 803ce19b .config console log syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/20 07:41 linux-6.6.y cbb31f77b879 572effc1 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/19 17:33 linux-6.6.y cbb31f77b879 a9fc5226 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/19 14:15 linux-6.6.y cbb31f77b879 a9fc5226 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/19 04:06 linux-6.6.y cbb31f77b879 20d37d28 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/18 12:51 linux-6.6.y cbb31f77b879 20d37d28 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/18 05:01 linux-6.6.y cbb31f77b879 20d37d28 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/17 02:51 linux-6.6.y c596736dadab 20d37d28 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/16 20:54 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/16 19:01 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/16 11:14 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/16 02:27 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/16 01:48 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/15 20:10 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/15 00:57 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/14 13:28 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/14 08:50 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/13 18:47 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/01/13 14:00 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/13 06:13 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/13 04:34 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/12 16:02 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/12 09:47 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/12 08:34 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/12 06:05 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/12 01:17 linux-6.6.y c596736dadab d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/11 02:42 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/10 18:40 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/09 18:16 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/09 16:54 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/08 19:55 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/08 10:02 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/07 16:21 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/07 14:57 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/07 13:50 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/01/07 12:46 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/07 10:52 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/01/06 21:53 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/06 18:11 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/01/05 22:53 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2025/06/17 19:03 linux-6.6.y c2603c511feb cfebc887 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/28 03:46 linux-6.6.y c09fbcd31ae6 356bdfc9 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/27 15:04 linux-6.6.y c09fbcd31ae6 74a13a23 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/26 23:54 linux-6.6.y c09fbcd31ae6 766b6434 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/26 22:17 linux-6.6.y c09fbcd31ae6 766b6434 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/26 15:00 linux-6.6.y c09fbcd31ae6 766b6434 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/24 21:14 linux-6.6.y 4fc00fe35d46 74e70d19 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/23 04:04 linux-6.6.y 4fc00fe35d46 5b92003d .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/20 22:04 linux-6.6.y 4fc00fe35d46 ac6f1dff .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/20 19:52 linux-6.6.y 4fc00fe35d46 ac6f1dff .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/20 15:45 linux-6.6.y 4fc00fe35d46 ac6f1dff .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/20 11:46 linux-6.6.y 4fc00fe35d46 2f245add .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/20 10:55 linux-6.6.y 4fc00fe35d46 2f245add .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/20 07:35 linux-6.6.y 4fc00fe35d46 2f245add .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/20 05:32 linux-6.6.y 4fc00fe35d46 2f245add .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/19 16:29 linux-6.6.y 4fc00fe35d46 bd6dcb30 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/19 08:30 linux-6.6.y 4fc00fe35d46 0199f9a1 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/19 07:17 linux-6.6.y 4fc00fe35d46 0199f9a1 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/18 23:59 linux-6.6.y 4fc00fe35d46 0199f9a1 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/18 07:11 linux-6.6.y 4fc00fe35d46 c8810548 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/18 02:14 linux-6.6.y 4fc00fe35d46 c8810548 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/18 00:27 linux-6.6.y 4fc00fe35d46 c8810548 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/17 19:48 linux-6.6.y 4fc00fe35d46 c8810548 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/17 15:16 linux-6.6.y 4fc00fe35d46 c01bca74 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/12 21:09 linux-6.6.y 4fc00fe35d46 4efadf07 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/11 23:06 linux-6.6.y 4fc00fe35d46 2d88ab01 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/11 11:16 linux-6.6.y 4fc00fe35d46 86914af9 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/11 04:52 linux-6.6.y 4fc00fe35d46 86914af9 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/10 14:11 linux-6.6.y 4fc00fe35d46 4683d576 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/09 23:36 linux-6.6.y 4fc00fe35d46 176bead5 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/08 18:00 linux-6.6.y 4fc00fe35d46 5cb44a80 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/08 15:07 linux-6.6.y 4fc00fe35d46 5cb44a80 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/08 13:37 linux-6.6.y 4fc00fe35d46 5cb44a80 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/08 10:59 linux-6.6.y 4fc00fe35d46 5cb44a80 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/07 09:32 linux-6.6.y 4fc00fe35d46 5cb44a80 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/06 22:07 linux-6.6.y 4fc00fe35d46 41d8037d .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/06 06:49 linux-6.6.y 4fc00fe35d46 31e9c887 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/06 04:31 linux-6.6.y 4fc00fe35d46 31e9c887 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/06 03:23 linux-6.6.y 4fc00fe35d46 31e9c887 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/06 01:17 linux-6.6.y 4fc00fe35d46 31e9c887 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/05 13:52 linux-6.6.y 682d8e2f892b d20b04c8 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/05 05:05 linux-6.6.y 682d8e2f892b a9fe5c9e .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/04 22:36 linux-6.6.y 682d8e2f892b e6b6b96b .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/03/04 02:23 linux-6.6.y 7a137e9bfa0e 4180d919 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2025/06/16 17:09 linux-6.6.y c2603c511feb d1716036 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
* Struck through repros no longer work on HEAD.