ci starts bisection 2026-06-22 23:22:39.319687303 +0000 UTC m=+29943.689545336
bisecting fixing commit since 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5
building syzkaller on c0460fcde7051a8d07612ec2a17718d3c3019bb0
ensuring issue is reproducible on original commit 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5

testing commit 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 40cf5eb0eec2825daf9d3fb98bf192e321f5a8bb44036197952f307186fd7427
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 71972056b42b404cba8b988952b153f96f161124951b4efd64ff9fda27bbb351
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=4140 full=8516 leaves diff=2185
split chunks (needed=false): <2185>
split chunk #0 of len 2185 into 5 parts
testing without sub-chunk 1/5
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 1accc0c6d7c1dc2acdf41599d8d2808dd983f6bcb7d8ba23ae83b5d7de83da1f
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 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: cf06e123150b8492beb19071521dd7dace1a00903ed898922edae2ddaf566405
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 9075e1cd93c6a7fca95575e32bfab3c163bf903874aa53d8eb3de92be6683f8b
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 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 0236c287765e65b3954842ca861ca695d664e4431cb856f8d9146ee21f652a4e
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 6fab32bb6508abbb8b7b1c5498e44f0c32320ed5 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: fcf5f55a72969a7afbb85f02d4e13c6239f6226ac84151d6f3dcd79d2849855a
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing current HEAD 4708cac0e22cfd217f48f7cec3c35e5922efcccd
testing commit 4708cac0e22cfd217f48f7cec3c35e5922efcccd gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 2d32e9a9b9315ba70641929baed044798427ddf18b838e53adb9317c73c7b14b
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: 2h22m55.919654377s (build: 1h13m50.561526915s, test: 30m34.748831149s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'staging-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
crash: lost connection to test machine