syzbot

 sign-in | mailing list | source | docs
🐞 Open [452]
🐞 Fixed [23]
🐞 Invalid [211]
⬇ Missing Backports [17]
≡ 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: 305d, last: 34m
▶ ▼ 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 3051d never 0/2 closed as invalid on 2017/12/09 08:45
android-5-15 lost connection to test machine origin:lts -1 C 417612 7m 1290d 0/2 premoderation: reported C repro on 2022/10/05 10:32
android-44 lost connection to test machine (3) -1 C 259 3033d 3050d 0/2 closed as invalid on 2017/12/27 12:57
linux-4.14 lost connection to test machine -1 56267 1164d 2563d 0/1 upstream: reported on 2019/04/11 15:39
android-44 lost connection to test machine (4) -1 C 62294 2326d 2560d 0/2 public: reported C repro on 2019/04/14 00:00
android-49 lost connection to test machine (3) -1 C 109581 2326d 2560d 0/3 public: reported C repro on 2019/04/14 08:51
android-44 lost connection to test machine -1 79 3081d 3081d 0/2 closed as invalid on 2017/11/09 08:47
android-6-1 lost connection to test machine origin:upstream -1 C 327857 13m 1073d 0/2 premoderation: reported C repro on 2023/05/10 12:05
android-6-12 lost connection to test machine origin:downstream -1 C 46588 now 302d 0/1 premoderation: reported C repro on 2025/06/19 05:52
linux-4.4 lost connection to test machine -1 426 2398d 2558d 0/1 auto-closed as invalid on 2019/12/22 11:26
upstream lost connection to test machine (4) -1 C 1189 2972d 2986d 4/29 fixed on 2018/02/26 20:04
android-5-10 lost connection to test machine -1 C 744603 now 1627d 0/2 upstream: reported C repro on 2021/11/02 11:48
android-414 lost connection to test machine -1 C 23644 2326d 2562d 0/1 public: reported C repro on 2019/04/12 00:01
android-49 lost connection to test machine -1 C 8069 3081d 3081d 0/3 closed as invalid on 2017/11/09 10:06
upstream lost connection to test machine (2) -1 C 15874 3033d 3081d 0/29 closed as invalid on 2017/12/27 12:57
android-54 lost connection to test machine -1 syz 136755 326d 2289d 0/2 upstream: reported syz repro on 2020/01/10 15:22
upstream lost connection to test machine (5) -1 C error 3030797 now 2345d 0/29 moderation: reported C repro on 2019/11/15 12:45
upstream lost connection to test machine (3) -1 C 4251 2993d 3033d 4/29 fixed on 2018/02/04 23:45
upstream lost connection to test machine -1 C 25017 3081d 3081d 0/29 closed as invalid on 2017/11/09 10:06
linux-6.1 lost connection to test machine origin:upstream -1 C unreliable 79519 6h09m 1136d 0/3 upstream: reported C repro on 2023/03/08 14:43
android-49 lost connection to test machine (2) -1 C 2946 3033d 3081d 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 30602 5h44m 1136d 0/3 upstream: reported C repro on 2023/03/08 15:21
linux-4.19 lost connection to test machine -1 30440 1166d 2563d 0/1 upstream: reported on 2019/04/10 19:39
Crashes (16850):
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
2026/04/17 17:55 linux-6.6.y 8cee53b8eaeb 24ecfc1e .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/17 16:27 linux-6.6.y 8cee53b8eaeb 24ecfc1e .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/17 12:20 linux-6.6.y 8cee53b8eaeb de0a551d .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/16 00:52 linux-6.6.y 8cee53b8eaeb df15c5f3 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/15 16:07 linux-6.6.y 8cee53b8eaeb c441f497 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/15 13:26 linux-6.6.y 8cee53b8eaeb c441f497 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/14 22:07 linux-6.6.y 8cee53b8eaeb 362d1323 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/14 13:08 linux-6.6.y 8cee53b8eaeb 362d1323 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/13 02:17 linux-6.6.y 8cee53b8eaeb 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/12 18:29 linux-6.6.y 8cee53b8eaeb 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/11 07:34 linux-6.6.y 80de0a958133 38c8e246 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/11 06:20 linux-6.6.y 80de0a958133 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/10 23:20 linux-6.6.y 80de0a958133 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/10 20:12 linux-6.6.y 80de0a958133 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/09 21:23 linux-6.6.y 80de0a958133 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/08 06:51 linux-6.6.y 80de0a958133 2c961e87 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/08 02:43 linux-6.6.y 80de0a958133 2c961e87 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/07 22:14 linux-6.6.y 80de0a958133 628666c6 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/07 21:07 linux-6.6.y 80de0a958133 628666c6 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/06 21:58 linux-6.6.y 80de0a958133 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/06 19:05 linux-6.6.y 80de0a958133 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf lost connection to test machine
2026/04/04 22:19 linux-6.6.y c09fbcd31ae6 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/03 23:51 linux-6.6.y c09fbcd31ae6 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/03 21:50 linux-6.6.y c09fbcd31ae6 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/03 19:07 linux-6.6.y c09fbcd31ae6 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/02 17:39 linux-6.6.y c09fbcd31ae6 91bc79b0 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/02 04:33 linux-6.6.y c09fbcd31ae6 0cb124d5 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/01 20:31 linux-6.6.y c09fbcd31ae6 9a1f7828 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/04/01 19:27 linux-6.6.y c09fbcd31ae6 9a1f7828 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/31 04:46 linux-6.6.y c09fbcd31ae6 d0af506e .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/30 22:53 linux-6.6.y c09fbcd31ae6 d0af506e .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/30 09:04 linux-6.6.y c09fbcd31ae6 dcaebc52 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/29 22:42 linux-6.6.y c09fbcd31ae6 b5ceaad2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan lost connection to test machine
2026/03/29 01:08 linux-6.6.y c09fbcd31ae6 b5ceaad2 .config console log info [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
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.