ci starts bisection 2025-06-11 18:27:53.252413006 +0000 UTC m=+98.650590762
bisecting cause commit starting from 19a60293b9925080d97f22f122aca3fc46dadaf9
building syzkaller on 5d7e17caf7d0971d22446d8a81bcf1cd8c18a0dc
ensuring issue is reproducible on original commit 19a60293b9925080d97f22f122aca3fc46dadaf9

testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: ea4b6e58ba16b9a8df2af73134b18310a6e1204098383fb047513decb086c3fb
all runs: crashed: KASAN: slab-use-after-free Read in do_check
representative crash: KASAN: slab-use-after-free Read in do_check, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 712dd8ef2a342add6ff99164c38c4ce19a1c9ce22f72cb8996842f76a72da0ff
all runs: crashed: KASAN: slab-use-after-free Read in do_check
representative crash: KASAN: slab-use-after-free Read in do_check, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
kconfig minimization: base=4091 full=8368 leaves diff=2129
split chunks (needed=false): <2129>
split chunk #0 of len 2129 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: da69110a6902f671bb2349cec07de0063c1919ba1cb012b485f498264dffae35
all runs: crashed: KASAN: slab-use-after-free Read in do_check
representative crash: KASAN: slab-use-after-free Read in do_check, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: b2b9e2a2cf318901d44a329a1041115c52bd22f8d237baf7fc5e37680bf659c4
all runs: crashed: KASAN: slab-use-after-free Read in do_check
representative crash: KASAN: slab-use-after-free Read in do_check, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 47e7143b126f89cf0937212592d1e6e1928cef7e092b52282bf04b03d196c58e
run #0: infra problem: failed to create instance: googleapi: Error 503: Visibility check was unavailable. Please retry the request and contact support if the problem persists, backendError
run #1: crashed: KASAN: slab-use-after-free Read in do_check
run #2: crashed: KASAN: slab-use-after-free Read in do_check
run #3: crashed: KASAN: slab-use-after-free Read in do_check
run #4: crashed: KASAN: slab-use-after-free Read in do_check
run #5: crashed: KASAN: slab-use-after-free Read in do_check
run #6: crashed: KASAN: slab-use-after-free Read in do_check
run #7: crashed: KASAN: slab-use-after-free Read in do_check
run #8: crashed: KASAN: slab-use-after-free Read in do_check
run #9: crashed: KASAN: slab-use-after-free Read in do_check
representative crash: KASAN: slab-use-after-free Read in do_check, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 02c6166c4854c92c0e68b76223c3407cba331f3c1b7b1531f0a0cd844c830498
all runs: crashed: KASAN: slab-use-after-free Read in do_check
representative crash: KASAN: slab-use-after-free Read in do_check, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 19a60293b9925080d97f22f122aca3fc46dadaf9 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 2a9fc6d3d46be0f403cd4a3d5d1c379611bbbeea46b85586f7b5d1bb8c2a99da
repro testing failure: failed to create VM pool: failed to create GCE image: failed to get create image operation operation-1749684339439-6375421857844-f1907ff3-eab8f310: googleapi: Error 503: Visibility check was unavailable. Please retry the request and contact support if the problem persists, backendError
revisions tested: 7, total time: 4h59m0.735143633s (build: 4h10m33.507994612s, test: 38m37.112059507s)
error: config minimization failed: repro testing failure: failed to create VM pool: failed to create GCE image: failed to get create image operation operation-1749684339439-6375421857844-f1907ff3-eab8f310: googleapi: Error 503: Visibility check was unavailable. Please retry the request and contact support if the problem persists, backendError