SYZFAIL: open of /sys/kernel/debug/kcov failed

Status: premoderation: reported on 2026/08/13 04:53
Reported-by: syzbot+c273a703c4ed00db7cd6@syzkaller.appspotmail.com
First crash: 43d, last: 6m
▶ ▼ Similar bugs (12)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-12 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 11 8d19h 19d 0/1 premoderation: reported on 2026/09/05 20:00
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 1 1905d 1905d 0/1 auto-closed as invalid on 2021/11/04 08:11
android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 239 2d11h 26d 0/2 premoderation: reported on 2026/08/29 11:39
linux-6.6 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 56 19h33m 19d 0/2 upstream: reported on 2026/09/05 08:42
linux-6.1 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 42 18h54m 20d 0/3 upstream: reported on 2026/09/05 05:07
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 43 724d 800d 0/2 auto-obsoleted due to no activity on 2024/11/19 12:38
android-54 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 6 1756d 1858d 0/2 auto-closed as invalid on 2022/04/02 23:36
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed (3) -1 1 523d 523d 0/2 auto-obsoleted due to no activity on 2025/07/18 18:42
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed (4) -1 132 1d01h 20d 0/2 premoderation: reported on 2026/09/05 02:32
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed (2) -1 4 1756d 1756d 0/1 auto-closed as invalid on 2022/04/02 14:00
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed (2) -1 1 659d 659d 0/2 auto-obsoleted due to no activity on 2025/03/04 17:20
linux-5.15 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 36 2d20h 19d 0/3 upstream: reported on 2026/09/05 12:46

Sample crash report:
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /sys/kernel/debug/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: repeatedly failed to execute the program
proc=7 req=283 state=1 status=67 (errno 9: Bad file descriptor)

Crashes (318):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/25 07:09 android14-6.1 d687308775e6 f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/25 03:29 android14-6.1 d687308775e6 f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/25 01:50 android14-6.1 d687308775e6 3c3cdf19 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/24 17:25 android14-6.1 d687308775e6 3c3cdf19 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/24 13:33 android14-6.1 23dbb5ded88c 0281b448 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/24 11:16 android14-6.1 23dbb5ded88c 0281b448 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/24 03:42 android14-6.1 23dbb5ded88c 0281b448 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/24 00:35 android14-6.1 f26a1f4f9013 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 22:43 android14-6.1 f26a1f4f9013 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 20:07 android14-6.1 f26a1f4f9013 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 18:59 android14-6.1 f26a1f4f9013 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 17:15 android14-6.1 f26a1f4f9013 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 14:18 android14-6.1 f26a1f4f9013 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 07:39 android14-6.1 688a2fe85528 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/23 05:58 android14-6.1 688a2fe85528 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 17:23 android14-6.1 c5f3d472ff4d e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 13:11 android14-6.1 c5f3d472ff4d e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 07:36 android14-6.1 c5f3d472ff4d e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 02:28 android14-6.1 bef17d032038 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 18:36 android14-6.1 bef17d032038 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 18:21 android14-6.1 bef17d032038 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 13:46 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 10:38 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 06:52 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 03:37 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 23:43 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 18:23 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 13:51 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 11:39 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 10:39 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 08:06 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 04:25 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 01:39 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 00:08 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 23:07 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 21:41 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 18:31 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 12:29 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 03:36 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 01:56 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 23:32 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 19:08 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 14:29 android14-6.1 8cef8b5b11b7 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 04:10 android14-6.1 8cef8b5b11b7 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 00:58 android14-6.1 8cef8b5b11b7 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 00:56 android14-6.1 8cef8b5b11b7 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 19:38 android14-6.1 22764d91f0ef 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 17:52 android14-6.1 22764d91f0ef 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 15:34 android14-6.1 22764d91f0ef 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 14:08 android14-6.1 22764d91f0ef 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 08:04 android14-6.1 22764d91f0ef 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 01:30 android14-6.1 22764d91f0ef 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/10 03:40 android14-6.1 6f22c036600e 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
* Struck through repros no longer work on HEAD.