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: 39d, last: 16m
▶ ▼ 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 5d14h 16d 0/1 premoderation: reported on 2026/09/05 20:00
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 1 1902d 1902d 0/1 auto-closed as invalid on 2021/11/04 08:11
android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 222 48m 23d 0/2 premoderation: reported on 2026/08/29 11:39
linux-6.6 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 47 1d22h 16d 0/2 upstream: reported on 2026/09/05 08:42
linux-6.1 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 36 3d14h 16d 0/3 upstream: reported on 2026/09/05 05:07
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 43 721d 797d 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 1753d 1854d 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 520d 520d 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) -1 115 8h03m 17d 0/2 premoderation: reported on 2026/09/05 02:32
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed (2) -1 4 1753d 1753d 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 656d 656d 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 34 3d15h 16d 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=8 req=1046 state=1 status=67 (errno 11: Resource temporarily unavailable)

Crashes (282):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2026/09/16 22:17 android14-6.1 17514ea4a941 12a0a44a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/16 16:52 android14-6.1 17514ea4a941 12a0a44a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/16 14:10 android14-6.1 c5dd09d80de6 12a0a44a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/16 09:22 android14-6.1 c5dd09d80de6 12a0a44a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/16 00:53 android14-6.1 c5dd09d80de6 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 19:52 android14-6.1 c5dd09d80de6 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 17:07 android14-6.1 c5dd09d80de6 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 09:23 android14-6.1 da842aacc36b 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 08:15 android14-6.1 da842aacc36b 81a27d1a .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.