[v6.1] SYZFAIL: mount(sysfs) failed

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: cf82dcca9634 Linux 6.1.187
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15bfa8f9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=31dfefc4a14efea3
dashboard link: https://syzkaller.appspot.com/bug?extid=e7a12ae273cd89a68355
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/97e1e40b968b/disk-cf82dcca.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/cfec27562c15/vmlinux-cf82dcca.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4c7cd066c46d/bzImage-cf82dcca.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e7a12a...@syzkaller.appspotmail.com

SYZFAIL: mount(sysfs) failed
(errno 2: No such file or directory)
loop exited with status 67
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=5 req=2621 state=1 status=67 (errno 9: Bad file descriptor)


---
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[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 0996e0926f6b Linux 5.15.220
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=170a1125580000
kernel config: https://syzkaller.appspot.com/x/.config?x=21845b39f8fc6be8
dashboard link: https://syzkaller.appspot.com/bug?extid=dc312b8c73f31f43d40e

compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:

disk image: https://storage.googleapis.com/syzbot-assets/dc4b8d8e9340/disk-0996e092.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d165c7b0f84a/vmlinux-0996e092.xz
kernel image: https://storage.googleapis.com/syzbot-assets/27adabc89e72/bzImage-0996e092.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+dc312b...@syzkaller.appspotmail.com

proc=2 req=98 state=1 status=67 (errno 9: Bad file descriptor)

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 0996e0926f6b Linux 5.15.220
git tree: linux-5.15.y

console output: https://syzkaller.appspot.com/x/log.txt?x=172beb49580000

kernel config: https://syzkaller.appspot.com/x/.config?x=21845b39f8fc6be8
dashboard link: https://syzkaller.appspot.com/bug?extid=dc312b8c73f31f43d40e
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10abeb49580000

SYZFAIL: repeatedly failed to execute the program

proc=0 req=617 state=3 status=67 (errno 9: Bad file descriptor)
connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF


---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 8b73de7da85f Linux 6.6.156
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12d3e6f9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7be9809cedd6b69c
dashboard link: https://syzkaller.appspot.com/bug?extid=0160d3ad00d878548f4d

compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d7e87682fef0/disk-8b73de7d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/096830afc063/vmlinux-8b73de7d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/89c175e4560d/bzImage-8b73de7d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+0160d3...@syzkaller.appspotmail.com

SYZFAIL: mount(sysfs) failed
(errno 2: No such file or directory)
loop exited with status 67

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=1 req=3055 state=1 status=67 (errno 11: Resource temporarily unavailable)

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 8b73de7da85f Linux 6.6.156
git tree: linux-6.6.y

console output: https://syzkaller.appspot.com/x/log.txt?x=1142ac8e580000

kernel config: https://syzkaller.appspot.com/x/.config?x=7be9809cedd6b69c
dashboard link: https://syzkaller.appspot.com/bug?extid=0160d3ad00d878548f4d
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16b02601580000

SYZFAIL: repeatedly failed to execute the program