ci starts bisection 2026-06-15 21:06:38.453655562 +0000 UTC m=+18528.171401008
bisecting fixing commit since 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864
building syzkaller on 0c1d6ded3570097468e0af306043c121b2ded6a8
ensuring issue is reproducible on original commit 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864

testing commit 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: a3e7f00eb664471a5f3ebd67739f45eb3b23b1cf6a998370de4873fce44d6daa
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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: 22dd56d8dc551c32b0c223a8c4d7e59b5f03b15b8efaa5b9845e7faacc2458b4
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=4144 full=8480 leaves diff=2236
split chunks (needed=false): <2236>
split chunk #0 of len 2236 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 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: ce0d8778931440bab6a1b5455946aa421b1ac64e96636dac98709584d6f51000
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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: ebd9e79f9012a5683dcfadba958d8035363a7ffce32ecd3ecfa5e2417259b58f
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 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: 4bc0b8f169d7f755122c10bd92b4b5a5047cd7600cf5c7f0ef228ed170457dc7
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 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: e59bce9060d2d9f0adf33bb7a6bd95811ce348772fffa43be7e81d664ec9b7ad
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit 01a412d06bc5786eb4e44a6c8f0f4659bd4c9864 gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: 6b4222b3c1b9eb7ed4090ca1c661119a222973b9a7081fad3913b3ceaa828d76
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 0e0611827f3349d0a2ac121c023a6d3260dcecdb
testing commit 0e0611827f3349d0a2ac121c023a6d3260dcecdb gcc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
kernel signature: 7bbdc30d815fe56722a236bfbc496f4b4883c0777a9d2880fefd50326cd72808
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: 2h35m52.0342884s (build: 1h30m48.697326356s, test: 28m45.076560186s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'pull-fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/viro/vfs
crash: lost connection to test machine