ci starts bisection 2026-07-15 08:44:57.169783747 +0000 UTC m=+824.785169962
bisecting fixing commit since 9772589b57e44aedc240211c5c3f7a684a034d3a
building syzkaller on cc0956393c53a7771406d126236893fae27c3e27
ensuring issue is reproducible on original commit 9772589b57e44aedc240211c5c3f7a684a034d3a

testing commit 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8256aa3bd47c246a458fed58f9dc0ac1cd6f6b19c0ae40bafb0c6fb1c9a9ef9e
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: f09e8d13c6cfd42c6a2ac4b191374d04239d9533f134fed420802ad5d4d27615
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=4147 full=8582 leaves diff=2143
split chunks (needed=false): <2143>
split chunk #0 of len 2143 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 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 0ce2679e05762641382bb577049994c0fe2969f703df9118b480e0b28df9aa43
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: fe60db34089fcff8ea90a2059da3e69b675af57df3b0ad6cfa2c932e8b24b5e3
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 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b6a42887207d97cd52be4211d26922102619b8d3a60118ba17271786a07f7682
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 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b9a9396c1054fdfa23336ad38522764b0315da61de72a4d81a6cc3e4cf623741
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 9772589b57e44aedc240211c5c3f7a684a034d3a gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: dce6c56479ba3ec7a8ddbf0271973221601c6a928e4177fdbcf6e7cfd2ccb2f6
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing current HEAD 3f1f755366687d051174739fb99f7d560202f60b
testing commit 3f1f755366687d051174739fb99f7d560202f60b gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 37b7fc2bda9ffbc37774863e7078cf265a035fc7bf89be37864f782b5f2b1c34
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: 4h8m59.260542528s (build: 1h16m36.228552651s, test: 32m50.888091811s)
crash still not fixed or there were kernel test errors
commit msg: net: openvswitch: reject oversized nested action attrs
crash: lost connection to test machine