ci2 starts bisection 2024-08-30 15:54:42.424135748 +0000 UTC m=+41587.775061045
bisecting fixing commit since 284087d4f7d57502b5a41b423b771f16cc6d157a
building syzkaller on 4cf3f9b3f15d248d052cd369d23308c953d657d9
ensuring issue is reproducible on original commit 284087d4f7d57502b5a41b423b771f16cc6d157a

testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 106463a7cf52a2aff50da75a8b2e579bb82b9870ab561d850ca7f10b14698f0d
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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7ac9c4872100df14e2e40bacc565a57b43906e7ebcabb2f2d7aab2daa31eb1f6
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=3706 full=7269 leaves diff=1976
split chunks (needed=false): <1976>
split chunk #0 of len 1976 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1fd43238461cea8a1076b159961edb6421445add4bfea45d4b79eaaa72e18158
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8f8e4e498288e41c547063ee0766ad62202f089d72fc29b5a01d6a22a3d1843b
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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6024af5c9b6bd3d9402652f096cfce5f583b174e92787a11dd28cec02128d2b2
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 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d19b0cd45bfdc14651a5319cab31abae0ac585442c26f156e6809c749ec3ddb9
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 284087d4f7d57502b5a41b423b771f16cc6d157a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ccef58fc79b8c47d763f75f1eead4bbd083106e8845a0168e5ad24fc88043203
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 [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing current HEAD fa93fa65db6e232b5f2226dd86c9f066ec6dfd97
testing commit fa93fa65db6e232b5f2226dd86c9f066ec6dfd97 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 56a82c525439716f055c6e118fb2983b60f6424e480cda504ae3a2a1c20d8e09
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: 48m18.133728858s (build: 23m54.470432182s, test: 22m46.580090571s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.165
crash: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
2024/08/30 16:42:36 parsed 1 programs
2024/08/30 16:42:36 [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)