ci starts bisection 2026-07-13 09:04:36.496218918 +0000 UTC m=+858.907845612
bisecting fixing commit since 2d3090a8aeb596a26935db0955d46c9a5db5c6ce
building syzkaller on c36c07f6c1f2230a36374cbd22235f635e8f9284
ensuring issue is reproducible on original commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce

testing commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 15db308c76bb6c6165306490062c09ff9ce565b94f90f963ac4f14f19e3829af
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: f01523ce4b79a98c3323a08d4fb3e5408965bb91f7d1bdc78d943ec07fc49426
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
kconfig minimization: base=4140 full=8573 leaves diff=2139
split chunks (needed=false): <2139>
split chunk #0 of len 2139 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 2347fc1d27c82a9afc76a5eabe63b7557c590374faa58f5cb36a031daf689149
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 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: ed232b5453505960a6d7a36e9c9f2172aa15cf79515cb22a3c555c54acd71ad5
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: fd1af23c6f1f8ba93d7559a76db4b22c3f47f725e7f82128fda94e683e7da37b
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: b9873edeaa8e392feaf44dc338f6c8f196855ad6554970469330735192d8231b
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit 2d3090a8aeb596a26935db0955d46c9a5db5c6ce gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: b0da5d7c58b0acdccddc0f099049a2844075bb2612d5a9ff30857941e2466b1f
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 a13c140cc289c0b7b3770bce5b3ad42ab35074aa
testing commit a13c140cc289c0b7b3770bce5b3ad42ab35074aa gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: fa24a5c63472cae9e1da30e73aba579bd484b07a743b52c6563dc4beb77b129d
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: 3h10m19.640206391s (build: 1h6m25.154565693s, test: 36m26.809109785s)
crash still not fixed or there were kernel test errors
commit msg: Linux 7.2-rc3
crash: lost connection to test machine