ci starts bisection 2026-07-05 16:23:29.693098173 +0000 UTC m=+153954.922253594
bisecting fixing commit since 37a93dd5c49b5fda807fd204edf2547c3493319c
building syzkaller on 504cb1bfd362b0bb3b5d58f3c0abc7cc8c8ad026
ensuring issue is reproducible on original commit 37a93dd5c49b5fda807fd204edf2547c3493319c

testing commit 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 9e618183ae4afb15d40ad34b1403a2fd59a5e4fbe192d50f2470f87c886e82e1
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 8821102bc679a6b34f3707890e7cbdc2c726cd4f7456408efa0efd0501ea3ed6
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=4147 full=8600 leaves diff=2175
split chunks (needed=false): <2175>
split chunk #0 of len 2175 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 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 9ed668959d3abb81b34558517639ac8a391dfe9eb2a5cd04e3718fe50dfc722b
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 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: cd996426f4d567d38e5cf3757d0927ab8f63042b30d992ee64f4968f02fb0548
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 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e6500ebc7fe281ff1d1a14b2cbc36cacec1090e4da1832722b200a6f9a08e80a
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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 48cd794ff4296fc16f3df75bba73787b0f05b592706c31c0b1087fd6c1489f38
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 37a93dd5c49b5fda807fd204edf2547c3493319c gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 75b5c7582aa6865ced4cac0b91a192688b1b9aa02188fee66e0052e5bcdff254
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 b73bc9ca3686b78b642fb35dcc1fdf874ecb74a1
testing commit b73bc9ca3686b78b642fb35dcc1fdf874ecb74a1 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 63ead3ef7ef97a08bc305fb9b05792f9f7477273084e135f44fcba2279ed7e2a
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: 5h56m17.666672005s (build: 1h40m11.77343636s, test: 40m42.071230943s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'nf-next-26-07-02' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next
crash: lost connection to test machine