SYZFAIL: open of /sys/kernel/debug/kcov failed (4)

Status: premoderation: reported on 2026/09/05 02:32
Reported-by: syzbot+c605d7f6f0398790ef65@syzkaller.appspotmail.com
First crash: 15d, last: 9h40m
▶ ▼ 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 3d22h 14d 0/1 premoderation: reported on 2026/09/05 20:00
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 1 1901d 1901d 0/1 auto-closed as invalid on 2021/11/04 08:11
android-5-10 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 180 1h04m 21d 0/2 premoderation: reported on 2026/08/29 11:39
linux-6.6 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 47 5h40m 15d 0/2 upstream: reported on 2026/09/05 08:42
linux-6.1 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 36 1d21h 15d 0/3 upstream: reported on 2026/09/05 05:07
android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 43 719d 795d 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 -1 262 1h46m 38d 0/2 premoderation: reported on 2026/08/13 04:53
android-54 SYZFAIL: open of /sys/kernel/debug/kcov failed -1 6 1751d 1853d 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 518d 518d 0/2 auto-obsoleted due to no activity on 2025/07/18 18:42
linux-4.19 SYZFAIL: open of /sys/kernel/debug/kcov failed (2) -1 4 1751d 1751d 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 654d 654d 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 1d22h 14d 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=6 req=832 state=1 status=67 (errno 9: Bad file descriptor)

Crashes (104):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/20 00:22 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 23:22 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 21:30 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 18:50 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/19 18:50 android13-5.15-lts 5bfe2b8c1439 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 13:48 android13-5.15-lts 5bfe2b8c1439 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 10:00 android13-5.15-lts 5bfe2b8c1439 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/17 08:46 android13-5.15-lts 5bfe2b8c1439 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/16 00:43 android13-5.15-lts 5bfe2b8c1439 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 23:05 android13-5.15-lts 5bfe2b8c1439 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 21:49 android13-5.15-lts 5bfe2b8c1439 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 20:45 android13-5.15-lts 5bfe2b8c1439 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 19:24 android13-5.15-lts 5bfe2b8c1439 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 18:05 android13-5.15-lts 5bfe2b8c1439 2daa4bb5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 06:26 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 04:56 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 03:03 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/15 02:21 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/14 21:27 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/14 14:52 android13-5.15-lts 5bfe2b8c1439 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/14 09:30 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/14 08:07 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 22:48 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 19:44 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 14:54 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 13:17 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 09:12 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 07:53 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/13 03:31 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 23:47 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 20:16 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 16:03 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 05:02 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:59 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:27 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:27 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:27 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:26 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:25 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 04:25 android13-5.15-lts 5bfe2b8c1439 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 00:13 android13-5.15-lts 45bb2952b61c b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/12 00:13 android13-5.15-lts 45bb2952b61c b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/11 15:30 android13-5.15-lts 45bb2952b61c b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/11 15:28 android13-5.15-lts 45bb2952b61c b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/11 15:28 android13-5.15-lts 45bb2952b61c b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
2026/09/11 15:28 android13-5.15-lts 45bb2952b61c b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: open of /sys/kernel/debug/kcov failed
* Struck through repros no longer work on HEAD.