ci starts bisection 2026-07-26 06:42:59.809881768 +0000 UTC m=+88841.418353858
bisecting fixing commit since dca922e019dd758b4c1b4bec8f1d509efddeaab4
building syzkaller on 95008c030835c4879528388a94859e825cd16d84
ensuring issue is reproducible on original commit dca922e019dd758b4c1b4bec8f1d509efddeaab4

testing commit dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 9cef26245a374ff1b415c74f0def393555324be2f444ad15b217e18b25d0a464
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 dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 39bf229b1a67f70be26d04680595f0b11bb83b8a9525f6d652b916420e121169
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=8589 leaves diff=2148
split chunks (needed=false): <2148>
split chunk #0 of len 2148 into 5 parts
testing without sub-chunk 1/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: fd9598d309211efc9b7039b1633e5789ffda3ecbf5656bdac0cb2e265076d296
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 7f800f8e85038afb3455fa3d93d10698a18b99beffd03b78f768d58bb714ce35
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 452a3549bad2490c62f85d2cd7e036b314747fbf5156eac2a373d563558873eb
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 dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: 681e46ed1549213fc6e34721843f1ff1a02cb56bb650e1e9b9f44f542272f13e
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 dca922e019dd758b4c1b4bec8f1d509efddeaab4 gcc
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
kernel signature: e6b19c9f17938c0bbd758fab2e186fc36680d2b958f992734617a69b5c0e3040
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], 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: 7d0a3bc5e1c6a6a92004e62a24d706a6cf208a7a99f6d992e6daab1b1be4819c
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: 3h10m32.30977693s (build: 1h22m29.647916079s, test: 42m11.038318752s)
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