ci starts bisection 2026-07-17 14:19:10.52665755 +0000 UTC m=+28388.279885686
bisecting fixing commit since f5459048c38a00fc583658d6dcd0f894aff6df8f
building syzkaller on 38c8e24669882aabb2ec15315fbe22eb28592b44
ensuring issue is reproducible on original commit f5459048c38a00fc583658d6dcd0f894aff6df8f

testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8a72b896e8c1934c4b4415351b852f00916ec21f1f521b665b6ee8f66eff2ea7
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 3b27dcc727d2efbeabecbedbb85cde0bb8da44be0d1fa4469e73cc1953229e45
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
kconfig minimization: base=4147 full=8611 leaves diff=2175
split chunks (needed=false): <2175>
split chunk #0 of len 2175 into 5 parts
testing without sub-chunk 1/5
disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 7a896fc91f03fa0131ae640d475a6799a49604b257b106fe578edc639df16bf7
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: c8334e6c846ac6764c24dd7a5420b435f3ccef488bd53846ca5027b87bc8f9db
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 4787714c37b1f91c20730c701511617819103d121acff874149ad208137f368f
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 68ddf031f8366a20669983379162ac0d5009406ba02d7105ebd81b2d4c351eaf
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 f5459048c38a00fc583658d6dcd0f894aff6df8f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 44c3ab3c379113543e19d7f82b3835d8e1cfcc083b6552e2159831eac4e08968
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 fce2dfa773ced15f27dd27cd0b482a7473cdcf2a
testing commit fce2dfa773ced15f27dd27cd0b482a7473cdcf2a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: af0f8ec0de923e3798cbc2486eb1d6295a1389ddf40b499aa97ed2114df5f204
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: 10h20m42.334496267s (build: 8h58m33.160337441s, test: 32m1.721676111s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'v7.2-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
crash: lost connection to test machine