ci starts bisection 2026-07-15 05:28:33.08466124 +0000 UTC m=+112041.263290103
bisecting fixing commit since 4a4be1ad3a6efea16c56615f31117590fd881358
building syzkaller on 34889ee3b09e7b4d381828377aa6173bfcc36cc7
ensuring issue is reproducible on original commit 4a4be1ad3a6efea16c56615f31117590fd881358

testing commit 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 01b8ca3faf52fcb8e69f0e672ebfe1b2f6d07889821ad61dda5a703d8092c9f3
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 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 508bc675f3493b78bd6d6ef2ea2b377c215683a843b93e0d03fae13c2157b86b
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
kconfig minimization: base=4140 full=8043 leaves diff=2082
split chunks (needed=false): <2082>
split chunk #0 of len 2082 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 78a29b883465a83dd5b00cdadd097cc6ed5d7257fabc6d08e474c7a2da15ebc9
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 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 767367a3db81ce3b5fe3278d9950ff78637c369a3c4224f833c7defa25cb2438
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: deea39b0e7c7c965ce9fa124fdc27174799cdfcd5b531dd3ea8d0013bbf9f70e
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 1fbcf83fb076acaa3e213d041a884a1bf1b8d4e402eff52330f2d73b9b1fa24e
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 4a4be1ad3a6efea16c56615f31117590fd881358 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 145bf159687f29108cd2583ecb235af1be6e72437227fddd92fd334c82a29123
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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing current HEAD 58717b2a1365d06c8c64b72aa948541b53fe31eb
testing commit 58717b2a1365d06c8c64b72aa948541b53fe31eb gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: fd5a5a3d27b0a5fd73128e7eea62342f72ca7fab2a2ba23742f8c6dd1ec45780
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: 2h15m24.101429502s (build: 1h8m15.468320783s, test: 30m44.87458767s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'sound-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
crash: lost connection to test machine