ci starts bisection 2025-04-25 14:43:19.333438343 +0000 UTC m=+115.795057460
bisecting cause commit starting from 5565acd1e6c4a1994e0ba32281ec10b69c0be14d
building syzkaller on 9c80ffa0c732875f03df82e97c8294cfdf76c8a5
ensuring issue is reproducible on original commit 5565acd1e6c4a1994e0ba32281ec10b69c0be14d

testing commit 5565acd1e6c4a1994e0ba32281ec10b69c0be14d gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 8db91f760b05064d231df2e43c961284b53ce7a1feec353bf92267d472bd84ab
all runs: crashed: WARNING in ipv6_addr_prefix
representative crash: WARNING in ipv6_addr_prefix, types: [WARNING]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 5565acd1e6c4a1994e0ba32281ec10b69c0be14d gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 1a9ececf70163cd8c517298d1ba321863bf64618177a1751ad48180d066b0542
all runs: crashed: WARNING in ipv6_addr_prefix
representative crash: WARNING in ipv6_addr_prefix, types: [WARNING]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
kconfig minimization: base=4087 full=8331 leaves diff=2132
split chunks (needed=false): <2132>
split chunk #0 of len 2132 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 5565acd1e6c4a1994e0ba32281ec10b69c0be14d gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: e7e3c77be97415359c28adb6ac469d42908b2402955d0f5862339c79d8d07f8f
all runs: crashed: WARNING in ipv6_addr_prefix
representative crash: WARNING in ipv6_addr_prefix, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 5565acd1e6c4a1994e0ba32281ec10b69c0be14d gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
failed building 5565acd1e6c4a1994e0ba32281ec10b69c0be14d: ld.lld: error: undefined symbol: devm_drm_of_get_bridge
testing without sub-chunk 3/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 5565acd1e6c4a1994e0ba32281ec10b69c0be14d gcc
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
kernel signature: 5daea8167b051400313aa654b0bd4228d52eeb5df6c16eb43c1d2b8339113631
all runs: crashed: WARNING in ipv6_addr_prefix
representative crash: WARNING in ipv6_addr_prefix, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
revisions tested: 4, total time: 13h24m59.163012565s (build: 6h21m25.718843404s, test: 14m34.512647161s)
error: config minimization failed: bisection is taking too long (>12h0m0s), aborting