ci2 starts bisection 2025-07-01 07:34:21.953447051 +0000 UTC m=+51820.516999821
bisecting cause commit starting from afa9a6f4f5744d907954f5b708d76c9bffa43234
building syzkaller on fc9d8ee542c85682943812ee52a252cbc934118d
ensuring issue is reproducible on original commit afa9a6f4f5744d907954f5b708d76c9bffa43234

testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 2ba040b862f573eecf453c50a5057d9fe54b242ec60f675e0e42698bac5a55c7
run #0: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #10: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #11: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #12: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #13: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #14: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #15: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #16: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #17: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #18: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #19: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: deb72802ed2f3b8ed55e0506d1c601e2392ac21a6b0195ba4d1a205c4af6c118
run #0: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
kconfig minimization: base=4088 full=8356 leaves diff=2126
split chunks (needed=false): <2126>
split chunk #0 of len 2126 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 3de9188ac511f15f139410a4a67822b383098ebd137ead579332a7d5c312ce43
run #0: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 9e4e4184ee3b727dbf9a3b1a7db13eb70830988da6d43c50b28d75dc09b7914d
run #0: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: a81553549f486f1a7f647a8e03b62806889d271d15d67fcc8b614c16627938de
all runs: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: c4e4c065585d7ed617410e9a4ea1568a9f8c6de858fd53e61abf3de5319fd6e4
all runs: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit afa9a6f4f5744d907954f5b708d76c9bffa43234 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 90a9f322c377f1fcca4deaf34434a1d3481cd846ff39200f481f1241fad971c9
run #0: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
picked [v6.15 v6.14 v6.13 v6.11 v6.9 v6.7 v6.5 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 38 release tags
testing release v6.15
testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 441ce3ed1f1201077af2949e3406195dc4a3be134e97439be0074918ee27d44e
run #0: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.14
testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 9255b65d2b20118a3106a94b58d27c3fa680512f83c33ddb454662ad6a360654
run #0: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.13
testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 137aa3505d5fbe39f24e85e9d9db597130b7829c1421373c4cc327b189b517b3
run #0: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: slab-use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: slab-use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.11
testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: f8a0b18b74479b57dd6a0b61366e498a4dbb963cfea9940b2d20dbf987cf3953
run #0: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: out-of-bounds Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: out-of-bounds Read in __ext4_check_dir_entry
run #6: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.9
testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 08d29902ad9db71c4a7ed72d817d86d6ff4272947fa0a2c935159412bf7ea0d6
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.7
testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: da69eec5c18351d78c6726250e92b581e9c056f02318097af185a0e3f6b6355c
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.5
testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 3ff93d571107a4b13f6ef8b66b5cad8a8c26a332af9e2564c7d4833641ffd59e
run #0: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: out-of-bounds Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.3
testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: b8d7e1b15bff706e16a035fc702205713f3a322dd219fe732b2bd3ef44100850
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.0
testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
failed building 4fe89d07dcc2804c8b562f6c7896a45643d34b2f: ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
testing release v5.17
testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
failed building f443e374ae131c168a065ea1748feac6b2e76613: scripts/sign-file.c:89:14: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
/usr/include/openssl/err.h:422:1: note: 'ERR_get_error_line' has been explicitly marked deprecated here
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
certs/extract-cert.c:46:14: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
certs/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
testing release v5.14
testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c937cd4f60aa99da90159a8ba469d280921f6017ebb8e229d9bf70321c0061ef
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e9046eb1921fac044fcbfb36287adfb6a7165c69d6b4458cad799a27b3b3c896
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 029a573a03d0e63dd721aec941d359c180827acf6b239d0d7edf48d6f82e5a2f
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 012424e2cec053082c453aec60214df02beea92710123ec4311112228fca1912
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 517da9deac7e061eab29ff93f056dca5c5a781b977184f0b8e05ff622591c60c
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 89241edcc25dc2b58ddf88ef66420bbeff3d3e4a9c423eee0be6fb0133cca016
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: dd0dda042570bddcdecb791ff1aa16c67809f02bd6662bf5abe5901ec1121751
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
revisions tested: 22, total time: 6h8m56.502159569s (build: 2h42m15.913493861s, test: 2h7m34.805123301s)
error: oldest tested release had kernel build, boot or test errors