ci starts bisection 2026-07-25 19:55:30.923025789 +0000 UTC m=+49992.531497873
bisecting fixing commit since ab9de95c9cf952332ab79453b4b5d1bfca8e514f
building syzkaller on 432fd51ab5a4ba9b2e892f55ae7e1e4c2d056026
ensuring issue is reproducible on original commit 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: 2f41f07061aaaf3d43dbba0de79829985848c0f60a817d2f4882c2c2a838d117
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 ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b9ae1a9276ac6376ed1134c234234ac476a8a33c881a95f2329cf0856d01a5f1
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=8600 leaves diff=2145
split chunks (needed=false): <2145>
split chunk #0 of len 2145 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 266fbe4032a2026987b1733a63337c14a7d64859ff72ef5066c2a5830be90d6f
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 292d5a0bc1d726c5629df21754bd9026a97f7515547812734d561e2bcb01a099
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 ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 6843a01bbd4d529257d6eb57e8ed9bb914528d73566de105c376f943b7e5a47d
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 ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b5829a9ca9e6a05e6bc4779770c5ff4af63992e81a547d7bb2eb8981957d9c9d
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit ab9de95c9cf952332ab79453b4b5d1bfca8e514f gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b96589f337a58f1b855af63f34417569116e9d37143f6bc578de6d436bf8844a
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 3dab139d4795f688e4f243e40c7474df00d329d9
testing commit 3dab139d4795f688e4f243e40c7474df00d329d9 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: b87af2c48cc01a0ef22a3b2eef4f55d7d28a3be77025dacf2c9dcd4054c6e339
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: 2h22m14.241556728s (build: 1h15m48.933345425s, test: 28m16.755953091s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'rust-fixes-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
crash: lost connection to test machine