syzbot

 sign-in | mailing list | source | docs
🐞 Open [900]
🐞 Fixed [141]
🐞 Invalid [1065]
⬇ Missing Backports [73]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

lost connection to test machine

Status: upstream: reported C repro on 2023/03/08 14:43
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+2848ce90a1090c236f33@syzkaller.appspotmail.com
First crash: 1129d, last: now
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2025/06/28 upstream (ToT) aaf724ed6926 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 3044d never 0/2 closed as invalid on 2017/12/09 08:45
android-5-15 lost connection to test machine origin:lts -1 C 413620 now 1283d 0/2 premoderation: reported C repro on 2022/10/05 10:32
android-44 lost connection to test machine (3) -1 C 259 3026d 3043d 0/2 closed as invalid on 2017/12/27 12:57
linux-4.14 lost connection to test machine -1 56267 1158d 2556d 0/1 upstream: reported on 2019/04/11 15:39
android-44 lost connection to test machine (4) -1 C 62294 2319d 2553d 0/2 public: reported C repro on 2019/04/14 00:00
android-49 lost connection to test machine (3) -1 C 109581 2319d 2553d 0/3 public: reported C repro on 2019/04/14 08:51
android-44 lost connection to test machine -1 79 3075d 3074d 0/2 closed as invalid on 2017/11/09 08:47
android-6-1 lost connection to test machine origin:upstream -1 C 324538 now 1066d 0/2 premoderation: reported C repro on 2023/05/10 12:05
android-6-12 lost connection to test machine origin:downstream -1 C 44380 now 295d 0/1 premoderation: reported C repro on 2025/06/19 05:52
linux-6.6 lost connection to test machine origin:upstream -1 C 16826 34m 298d 0/2 upstream: reported C repro on 2025/06/16 17:10
linux-4.4 lost connection to test machine -1 426 2391d 2552d 0/1 auto-closed as invalid on 2019/12/22 11:26
upstream lost connection to test machine (4) -1 C 1189 2965d 2979d 4/29 fixed on 2018/02/26 20:04
android-5-10 lost connection to test machine -1 C 734115 now 1620d 0/2 upstream: reported C repro on 2021/11/02 11:48
android-414 lost connection to test machine -1 C 23644 2319d 2555d 0/1 public: reported C repro on 2019/04/12 00:01
android-49 lost connection to test machine -1 C 8069 3074d 3074d 0/3 closed as invalid on 2017/11/09 10:06
upstream lost connection to test machine (2) -1 C 15874 3026d 3074d 0/29 closed as invalid on 2017/12/27 12:57
android-54 lost connection to test machine -1 syz 136755 319d 2282d 0/2 upstream: reported syz repro on 2020/01/10 15:22
upstream lost connection to test machine (5) -1 C error 3024556 now 2338d 0/29 moderation: reported C repro on 2019/11/15 12:45
upstream lost connection to test machine (3) -1 C 4251 2987d 3026d 4/29 fixed on 2018/02/04 23:45
upstream lost connection to test machine -1 C 25017 3074d 3074d 0/29 closed as invalid on 2017/11/09 10:06
android-49 lost connection to test machine (2) -1 C 2946 3026d 3074d 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 30579 1h12m 1129d 0/3 upstream: reported C repro on 2023/03/08 15:21
linux-4.19 lost connection to test machine -1 30440 1159d 2557d 0/1 upstream: reported on 2019/04/10 19:39
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2024/06/19 11:16 7h28m fix candidate upstream OK (1) job log
Crashes (79405):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/27 19:10 linux-6.1.y 7e69c33e4858 803ce19b .config console log syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2025/06/26 23:15 linux-6.1.y 58485ff1a74f 803ce19b .config console log syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/20 06:56 linux-6.1.y cd9b81672742 572effc1 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/19 16:44 linux-6.1.y cd9b81672742 a9fc5226 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/19 13:33 linux-6.1.y cd9b81672742 a9fc5226 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/18 12:35 linux-6.1.y cd9b81672742 20d37d28 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/17 04:23 linux-6.1.y bec0e10ee67e 20d37d28 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/16 20:36 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/16 19:25 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/01/16 09:50 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/15 21:41 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/15 11:35 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/15 10:22 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/15 04:29 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/14 13:22 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/14 11:28 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/13 14:29 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/13 03:53 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/12 17:24 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/12 07:27 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/12 00:01 linux-6.1.y bec0e10ee67e d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/11 02:14 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/10 20:03 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/09 14:13 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/08 20:26 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/08 08:09 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/07 16:19 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/06 21:16 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/06 18:08 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/05 06:49 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/05 06:12 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/04 18:29 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/04 16:46 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/04 14:07 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/03 16:41 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/03 07:56 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/03 06:29 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/03 05:05 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/03 00:07 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/02 22:30 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/02 07:38 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/01/02 05:33 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2024/06/12 16:08 linux-6.1.y ae9f2a70d69e f815599d .config console log syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2024/05/30 04:17 linux-6.1.y 88690811da69 34889ee3 .config syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2024/05/30 05:36 linux-6.1.y 88690811da69 34889ee3 .config syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/10 23:54 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/10 21:44 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/10 10:03 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/10 05:07 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/09 05:55 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/08 08:08 linux-6.1.y 1989cd3d56e2 2c961e87 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/07 21:56 linux-6.1.y 1989cd3d56e2 628666c6 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/07 20:22 linux-6.1.y 1989cd3d56e2 628666c6 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/07 14:57 linux-6.1.y 1989cd3d56e2 628666c6 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/04 11:45 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/03 21:56 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/03 21:49 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/03 12:20 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/03 01:22 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/02 14:18 linux-6.1.y 1989cd3d56e2 91bc79b0 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/01 22:59 linux-6.1.y 1989cd3d56e2 0cb124d5 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/01 21:11 linux-6.1.y 1989cd3d56e2 9a1f7828 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/04/01 11:03 linux-6.1.y 1989cd3d56e2 9a1f7828 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/03/31 19:32 linux-6.1.y 1989cd3d56e2 aeea1c72 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/03/30 22:48 linux-6.1.y 1989cd3d56e2 d0af506e .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/03/30 08:27 linux-6.1.y 1989cd3d56e2 dcaebc52 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/03/29 21:06 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan lost connection to test machine
2026/03/28 04:06 linux-6.1.y 1989cd3d56e2 356bdfc9 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/03/28 03:51 linux-6.1.y 1989cd3d56e2 356bdfc9 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2025/06/28 09:08 linux-6.1.y 7e69c33e4858 fc9d8ee5 .config console log syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
2026/04/10 15:01 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/09 14:37 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/09 11:36 linux-6.1.y 1989cd3d56e2 38c8e246 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/08 03:07 linux-6.1.y 1989cd3d56e2 2c961e87 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/06 14:52 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/06 05:29 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/05 10:15 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/04 04:56 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/03 15:00 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/03 03:04 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/03 00:11 linux-6.1.y 1989cd3d56e2 4440e7c2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/02 19:02 linux-6.1.y 1989cd3d56e2 91bc79b0 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/02 13:01 linux-6.1.y 1989cd3d56e2 91bc79b0 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/02 10:33 linux-6.1.y 1989cd3d56e2 91bc79b0 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/01 22:24 linux-6.1.y 1989cd3d56e2 0cb124d5 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/01 19:50 linux-6.1.y 1989cd3d56e2 9a1f7828 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/01 12:08 linux-6.1.y 1989cd3d56e2 9a1f7828 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/04/01 04:51 linux-6.1.y 1989cd3d56e2 fb8b2c26 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/03/31 14:01 linux-6.1.y 1989cd3d56e2 aeea1c72 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/03/31 12:34 linux-6.1.y 1989cd3d56e2 aeea1c72 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/03/31 12:34 linux-6.1.y 1989cd3d56e2 aeea1c72 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/03/30 14:55 linux-6.1.y 1989cd3d56e2 dcaebc52 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/03/28 20:16 linux-6.1.y 1989cd3d56e2 b5ceaad2 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2026/03/28 02:33 linux-6.1.y 1989cd3d56e2 356bdfc9 .config console log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 lost connection to test machine
2023/03/08 14:43 linux-6.1.y 42616e0f09fb d2b00170 .config console log info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf lost connection to test machine
* Struck through repros no longer work on HEAD.