ci2 starts bisection 2026-06-25 16:28:05.796535013 +0000 UTC m=+42847.922259071
bisecting fixing commit since 6bd9ed02871f22beb0e50690b0c3caf457104f7c
building syzkaller on 6df4c87aea53e125680d309de1b6f7306e0d2e62
ensuring issue is reproducible on original commit 6bd9ed02871f22beb0e50690b0c3caf457104f7c

testing commit 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 7fb67a44c8969e92dd1ecd4c0acf178555a262f9a35a79ca36c3861501fbcc29
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 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 14943c0ada61269f2be086b3eb30a2811bf03cf8fffc524861ac270d94f3e4c4
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=4137 full=8386 leaves diff=2141
split chunks (needed=false): <2141>
split chunk #0 of len 2141 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 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 5b16babadab3e7f91ef144f1cf399d23e284750cf923519a523df453cf05baf1
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 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: c35630d76e31fd4a73c90c74bc27b9343c795ec6b70818d9e6762746c279d42c
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 46b13168b1916d2ff27f3381d6070e71e76e4aef2fc8bfc6c17cbccc96cb9d85
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 3141f20f1824dace33203d9b97b4848b56fa96ae8c5738b0f64f05d4576e5344
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 6bd9ed02871f22beb0e50690b0c3caf457104f7c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: ac80915882a0705dbaa2b19033e936344eae9465ed52b51874165df84cb2e4ef
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 ab9de95c9cf952332ab79453b4b5d1bfca8e514f
testing commit ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 85d6cf18b53c4205543241c63d91f9f64a15774d73d65f92068de5183cde6f7d
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: 2h12m30.341629951s (build: 1h15m56.426513632s, test: 31m0.338429372s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'rust-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
crash: lost connection to test machine