ci2 starts bisection 2024-11-26 16:19:31.939664572 +0000 UTC m=+21260.722333423
bisecting fixing commit since 909ba1f1b4146de529469910c1bd0b1248964536
building syzkaller on 20bf80e1d6eb340a35a841a099b8dca81e42ff5e
ensuring issue is reproducible on original commit 909ba1f1b4146de529469910c1bd0b1248964536

testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d2d85fa1f1423ee15927dd49a8aafa4fc146f9b05593c43662444788da6ff42f
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
check whether we can drop unnecessary instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 978dbf4c80f34ef7a54a8a340d59a35f236320e568bb166aa431fab5064d7fb2
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=3824 full=7456 leaves diff=1985
split chunks (needed=false): <1985>
split chunk #0 of len 1985 into 5 parts
testing without sub-chunk 1/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: df5607b9c25c3842b83cafe7db4fd3417dcfb8091ffcfd7ec7341d72b6518a88
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b8ca37b2f981b5f6263418c1b034b9249569aa1cf0133634aaac2a3870d1b5c4
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 58fb930cb0b69156b261c1cc0c4676c3d14d3f19185d8399ade29f261101dda5
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 47c5a2aac98f0bff73b79a7cc979c4e8f2eb6fbd253eebfc43994128c8dd85b4
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b03f9ac9e1d627113a29d35da77e67fcc1bd29f4bf72745735fbb29122e3f54a
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
the chunk can be dropped
disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD e4d90d63d385228b1e0bcf31cc15539bbbc28f7f
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b0eb72dfb961373ea64d3538cb5128a7a8fbba9547293906921dabb3bc1e80e8
all runs: crashed: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
representative crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed, types: [SYZ_FAILURE]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 3h2m16.323803997s (build: 2h19m38.420437496s, test: 39m15.159741519s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1.119
crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
2024/11/26 19:21:25 parsed 1 programs
2024/11/26 19:21:25 [FATAL] failed to run ["./syz-executor" "setup" "fault" "binfmt_misc" "swap"]: exit status 67
mkdir(/syzcgroup) failed: 17
mount(binfmt_misc) failed: 16
write(/proc/sys/fs/binfmt_misc/register) failed: 17
SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
 (errno 17: File exists)