ci2 starts bisection 2026-06-27 05:22:36.889935488 +0000 UTC m=+50340.394483987
bisecting fixing commit since d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8
building syzkaller on 2b01f00eb6f21b4f227c78c2e10ecec55f5e7d76
ensuring issue is reproducible on original commit d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8

testing commit d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8ee217fdd5507261eb54d21bc9b10d76913c63b6efb97a0a7b81211c42f6e4a5
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 d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 3723d9061c7be2c4787f4e354ac20ad099bf792d908c785b82539f33e859f08e
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
kconfig minimization: base=4137 full=8381 leaves diff=2106
split chunks (needed=false): <2106>
split chunk #0 of len 2106 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 d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: d7a09c756dd9b6345eb771673b7e55d6b603e28c17a0f3c9a6c743d6e3910287
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 6381f0d4e088641d09b08ea2fdde8b5a3b70a976518cef1e8f3f20aa4f13c0f1
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 d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 37291a1f5c2071b435afc83df4e026f26e6f573d0cfc0cda14063d8617dc5d24
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 d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 6a931373d8b759b68730cd466e70d33a046000eb663942e0daad61845fa090d6
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 d60ec36cab338dfe2ae40d73e9c8d6c4af70d2b8 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 580d3ef58b6b8159541b30e6f8d41d965d82afcfefa24d872a55cc6d1fc03e6d
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing current HEAD 5a66900afbd6b2a063eebad35294038a654de2b0
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 1d301fc0e88f9c30759369d1345f96a62491043345a9a5849512fff2e5861653
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: 2h41m38.077621359s (build: 1h19m32.880677377s, test: 51m23.140174775s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'drm-fixes-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel
crash: lost connection to test machine