ci2 starts bisection 2025-06-16 23:57:46.121332293 +0000 UTC m=+40787.257497470
bisecting fixing commit since 420102835862f49ec15c545594278dc5d2712f42
building syzkaller on fb427a0782000106c62de76d251e5a02de5406a9
ensuring issue is reproducible on original commit 420102835862f49ec15c545594278dc5d2712f42

testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 1e4e4f001b535b8a3390dfb4c7071105ad515dae6bd4b83f0c6e344425465ddb
run #0: crashed: lost connection to test machine
run #1: crashed: INFO: task hung in _free_event
run #2: crashed: INFO: task hung in _free_event
run #3: crashed: INFO: task hung in _free_event
run #4: crashed: INFO: task hung in _free_event
run #5: crashed: INFO: task hung in _free_event
run #6: crashed: INFO: task hung in _free_event
run #7: crashed: INFO: task hung in _free_event
run #8: crashed: INFO: task hung in _free_event
run #9: crashed: INFO: task hung in _free_event
run #10: crashed: INFO: task hung in _free_event
run #11: crashed: INFO: task hung in _free_event
run #12: crashed: INFO: task hung in _free_event
run #13: crashed: INFO: task hung in _free_event
run #14: crashed: INFO: task hung in _free_event
run #15: crashed: INFO: task hung in _free_event
run #16: crashed: INFO: task hung in _free_event
run #17: crashed: INFO: task hung in _free_event
run #18: crashed: INFO: task hung in _free_event
run #19: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: d5afef5c65c41f7f04b7fac5dffa8b7f7ef01aa3d273f2b073b0f53b4ddf6142
all runs: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=3829 full=7526 leaves diff=1997
split chunks (needed=false): <1997>
split chunk #0 of len 1997 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 900350ecc361cfeb7fb80a7df9ac2de5aa84d5fd9d89d1090c075d140f13d220
all runs: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 94500abe3ee9079ef7cc93a3e25edac66cb69d479be0b612fa062d1707c583be
all runs: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: a85309e78bb233385f0b517847466d41ac48cc51245755382e5ba7833b225a73
all runs: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 07a2ed2a788374122520f532bd3205910d3ce933f18a1df4104d782b08e2a2e1
all runs: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 8ff5eeb5045bc54c6f390b7f6284b3510682579a8946a28aff33aa6759054885
all runs: crashed: INFO: task hung in _free_event
representative crash: INFO: task hung in _free_event, types: [HANG]
the chunk can be dropped
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
determining the merge base between 420102835862f49ec15c545594278dc5d2712f42 and 9afe652958c3ee88f24df1e4a97f298afce89407
830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug
testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
failed building 830b3c68c1fb1e9176028d02ef86f3cf76aa2476: ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
reproducer does not crash the merge base, so there's no known bad commit
revisions tested: 7, total time: 1h28m28.064886322s (build: 32m8.713039364s, test: 50m49.101724585s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1