ci starts bisection 2026-06-24 23:37:42.887151891 +0000 UTC m=+1953.987333417
bisecting fixing commit since aaec7096f9961eb223b5b149abe9495525c205d9
building syzkaller on a15a64a66dd37b7f9c31f5c3efb1524bb9863162
ensuring issue is reproducible on original commit aaec7096f9961eb223b5b149abe9495525c205d9

testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 9cb516b821a78ac04da80e530b630e841e3382cd77e88141568c58f2546f1296
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 aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b7fce7d816393b91c057751cd4e14ff1417e94922381185d3fc219956662897e
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=4144 full=8589 leaves diff=2147
split chunks (needed=false): <2147>
split chunk #0 of len 2147 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 aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: f8b8b5f469f0f809e577844f019c7533e5b2a96af991301b1fd04668f387de00
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 aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: d1091b70879f18b8b616bbb0b3af43ed7edf20425d302034823c9beaab67b84d
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 55ac8b5dad9987ce532e8e2de01eb6f87642fd38289b28a5e727dcaa09183ad0
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 aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: f09515ef3a8a2555b53d84d0986e829e864c5b0492234a75251ba8f3c0d34808
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 aaec7096f9961eb223b5b149abe9495525c205d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: f65d988342e60603673763112b3c7ac1e87ba034130110b545519007929253f5
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing current HEAD d87363b0edfc7504ff2b144fe4cdd8154f90f42e
testing commit d87363b0edfc7504ff2b144fe4cdd8154f90f42e gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 026e872888ca3715b5efc335a245c5ba10993384ae2e60a6fc4c80eb25b55055
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: 5h32m43.018149511s (build: 1h21m52.536036051s, test: 42m1.819056211s)
crash still not fixed or there were kernel test errors
commit msg: eth: fbnic: fix ordering of heartbeat vs ownership
crash: lost connection to test machine