ci starts bisection 2026-07-09 05:12:48.235163648 +0000 UTC m=+21014.613498481
bisecting fixing commit since aaec7096f9961eb223b5b149abe9495525c205d9
building syzkaller on de5aae85e5f28e2fa1c7deefcc24fe286abe5140
ensuring issue is reproducible on original commit aaec7096f9961eb223b5b149abe9495525c205d9

testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8cffe97eaa583fedc43070dd45ede7c5c4c802d399a9c0784407d8401c210998
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 3a519647b649d973123550f926387e4f1e8d90d5e66124d897094284c5612a11
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the bug reproduces without the instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
kconfig minimization: base=4147 full=8589 leaves diff=2148
split chunks (needed=false): <2148>
split chunk #0 of len 2148 into 5 parts
testing without sub-chunk 1/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e31d67b66b78d1308f70a462a60c6310c0847483f6d8f6393eef9bbe11cd1260
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: ef512693205c12826f595e8b6242c5bd321949651b3a0c1e159d7727ccff6a5f
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: cf3ac123f60320d8138cb0b15b168bedd840a091bef66fa1d6599b514c814584
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 14c38c27ee9e126b0ecc450114ad5689f62f967a5253b994e55c0651004c0f8e
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 6d7481a8e6cf6964872ed43ccabee633149e1b589d87cab26c9c3359f32da2f4
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing current HEAD 6d27e29a90bc6a717b97c6ddcd866db7bd8e4adc
testing commit 6d27e29a90bc6a717b97c6ddcd866db7bd8e4adc gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 96812785e970542e7f80fa32b77a2b8a962dae02664a11b7ce0d70a9d2e9ad06
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 5h11m18.951587391s (build: 4h2m53.664270394s, test: 33m29.480529507s)
crash still not fixed or there were kernel test errors
commit msg: Merge branch 'ipv4-ipv6-fix-uaf-and-memory-leak-in-igmp-mld'
crash: lost connection to test machine