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

Status: premoderation: reported on 2026/08/29 11:39
Reported-by: syzbot+08df89fe7da5613f91f6@syzkaller.appspotmail.com
First crash: 48d, last: 23d
▶ ▼ 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 12 18d 40d 0/1 premoderation: reported on 2026/09/05 20:00
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 1 1927d 1927d 0/1 auto-closed as invalid on 2021/11/04 08:11
linux-6.6 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 56 22d 41d 0/2 upstream: reported on 2026/09/05 08:42
linux-6.1 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 46 17d 41d 0/3 upstream: reported on 2026/09/05 05:07
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 43 746d 822d 0/2 auto-obsoleted due to no activity on 2024/11/19 12:38
android-6-1 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 330 20d 64d 0/2 premoderation: reported on 2026/08/13 04:53
android-54 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 6 1777d 1879d 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 544d 544d 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 22d 41d 0/2 premoderation: reported on 2026/09/05 02:32
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed (2) -1 4 1778d 1778d 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 681d 681d 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 24d 41d 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=112 state=1 status=67 (errno 9: Bad file descriptor)

Crashes (239):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/22 19:26 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 17:56 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 15:52 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 13:28 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 10:20 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 08:19 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 07:19 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 05:37 android13-5.10-lts 452567d1985b e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 03:22 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 01:56 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/22 00:43 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 21:52 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 19:04 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 17:42 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 15:17 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 12:52 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 09:21 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 06:59 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 05:23 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 03:22 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 00:37 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/21 00:16 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 22:30 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 21:09 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 19:52 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 17:26 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 16:14 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 13:25 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 11:44 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 10:19 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 08:57 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 07:27 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 04:19 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 02:59 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/20 00:00 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 22:11 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 19:30 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 18:00 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 15:19 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 14:05 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 11:58 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 09:18 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 09:17 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 06:11 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 03:35 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 02:35 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 01:18 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 22:20 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 20:49 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 16:06 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 07:46 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/18 04:51 android13-5.10-lts 452567d1985b 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/11 23:31 android13-5.10-lts 452567d1985b b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed
* Struck through repros no longer work on HEAD.