ci starts bisection 2026-07-21 01:41:22.206349325 +0000 UTC m=+58922.154575239
bisecting fixing commit since 8f303194b241c2795bb9b79ee80bc93e7876879c
building syzkaller on fca8d36012560bb3df56f0d849e5588ffe9eb992
ensuring issue is reproducible on original commit 8f303194b241c2795bb9b79ee80bc93e7876879c

testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 3de40a84e9e61c17a10d59bf49401062a4164f23135cb720756f2ee2476441b3
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 9f1b33780f632dcbe130aebe04766343cf6c4c69934b45fa335caf9f9a8fb32c
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=4147 full=8611 leaves diff=2174
split chunks (needed=false): <2174>
split chunk #0 of len 2174 into 5 parts
testing without sub-chunk 1/5
disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8495a33e7d9e8cfd6ac3cad3da6fbbc22da5c96d992d8e67d9f19a372b14e4b9
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: db25af90faa503b46e7f9f4423c6602f91890a1ed7d7ffc0345e595c592a16f9
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 6199a7cf03a0277a01ca0ba71cb0bd33cb661c8f38dc50463c9de897df62f68c
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 0ef2827832318a4589a6465902e2a0edcf856da9df2ff1c1bbc5a61b59e747a6
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 8f303194b241c2795bb9b79ee80bc93e7876879c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e008398ce0cf632e3619177541e32de3922ae7cd48eb9d97071e547250f5bcc7
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing current HEAD e354f7d60f14a3eacd5ec7b607346a5612f655ec
testing commit e354f7d60f14a3eacd5ec7b607346a5612f655ec gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 30418f34e6986bc2206320f4ecd47401bca3b299340fb9b027d2481a2e26229a
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: 3h26m35.368496795s (build: 1h3m52.834358325s, test: 45m48.599362029s)
crash still not fixed or there were kernel test errors
commit msg: bnx2x: fix null pointer dereference in bnx2x_free_mem_bp()
crash: lost connection to test machine