ASAN check Failed

[utkarshsasmit-cmd]

Hi Team,

Can anyone please assist with a high level description of the below issue.? Is it due to a memory leak or some kind of memory corruption?

Logs:
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #0 0xf79dcca2 in __asan::CheckUnwind() (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0xeeca2)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#1 0xf7a0646f in __sanitizer::CheckFailed(char const, int, char const, unsigned long long, unsigned long long) (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x11846f)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#2 0xf7912fb6 in __asan::QuarantineCallback::Recycle(__asan::AsanChunk*) (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x24fb6)**
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#3 0xf7913072 in __sanitizer::Quarantine<__asan::QuarantineCallback, __asan::AsanChunk>::DoRecycle(__sanitizer::QuarantineCache<__asan::QuarantineCallback>, __asan::QuarantineCallback) [clone .isra.0] (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x25072)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#4 0xf791343d in __sanitizer::Quarantine<__asan::QuarantineCallback, __asan::AsanChunk>::Recycle(unsigned int, __asan::QuarantineCallback) (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x2543d)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#5 0xf790fc90 in __asan::Allocator::QuarantineChunk(__asan::AsanChunk, void*, __sanitizer::BufferedStackTrace*) [clone .isra.0] (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x21c90)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#6 0xf79cf81f in __interceptor_free.part.0 (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0xe181f)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#7 0xf71f1290 in PQclear (/nix/store/cff39si1ypj07g0yydsspas5v3j184jf-postgresql-16.9-lib/lib/libpq.so.5+0x12290) (BuildId: d6f502957908235baa42871d12af4d099305f9d9)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: google/sanitizers#8 0x8181af7 in safe_PQclear ../tpfasm.c:783

[utkarshsasmit-cmd]

Hi Team,

Do we have any update on this please? I would be grateful for any prompt response on the above issue for any resolution or workaround

[gbMattN]

I don't think anything can be done with only what you've posted. If you think you've found some bug/issue in ASan could you provide a reproducer?

[utkarshsasmit-cmd]

Hi @gbMattN ,

Apologies for the delayed response. I just wanted to get a better understanding of the type of error reported in the ASan trace shared earlier.

I have an application written in C that uses libpq (the PostgreSQL client library). When I execute certain test entries, ASan reports a dump similar to the one shared above.

My clarification is — from the type of error reported by ASan, what exactly can we infer?
Is it indicating heap corruption, a double free, or some other kind of memory access issue?

Could you please help me interpret this further? Here is the extended snippet from the logs

Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: 2217490{f70188e9-f114-4a9b-b242-439a9b254ae5.F1666C}EWC1-SQL_get_tpf_rw() SelectDataNParams = 2
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #0 0xf79dcca2 in __asan::CheckUnwind() (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0xeeca2)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #1 0xf7a0646f in __sanitizer::CheckFailed(char const, int, char const, unsigned long long, unsigned long long) (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x11846f)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #2 0xf7912fb6 in __asan::QuarantineCallback::Recycle(__asan::AsanChunk*) (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x24fb6)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #3 0xf7913072 in __sanitizer::Quarantine<__asan::QuarantineCallback, __asan::AsanChunk>::DoRecycle(__sanitizer::QuarantineCache<__asan::QuarantineCallback>, __asan::QuarantineCallback) [clone .isra.0] (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x25072)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #4 0xf791343d in __sanitizer::Quarantine<__asan::QuarantineCallback, __asan::AsanChunk>::Recycle(unsigned int, __asan::QuarantineCallback) (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x2543d)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #5 0xf790fc90 in __asan::Allocator::QuarantineChunk(__asan::AsanChunk, void*, __sanitizer::BufferedStackTrace*) [clone .isra.0] (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0x21c90)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #6 0xf79cf81f in __interceptor_free.part.0 (/nix/store/bgvnrkrri93cz9y48kxj9dl0gqan52nh-gcc-13.3.0-lib/lib/libasan.so.8+0xe181f)
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #7 0xf71f1290 in PQclear (/nix/store/cff39si1ypj07g0yydsspas5v3j184jf-postgresql-16.9-lib/lib/libpq.so.5+0x12290) (BuildId: d6f502957908235baa42871d12af4d099305f9d9)**
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #8 0x8181af7 in safe_PQclear ../tpfasm.c:783
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #9 0x819baa0 in SQL_get_tpf_rw ../tpfasm.c:5704
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #10 0x8215e76 in get_tpf_rw ../tpfasm.c:5435
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #11 0x82804c9 in open_tpfdf_file ../tpfdf_tpf.c:3521
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #12 0x82e4d97 in DBADD ../tpfdf_tpf.c:2254
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #13 0xedb8c859 in _segSDI1 /app/build/sdi1.c:15803
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #14 0x81fad7d in call_segment ../tpfasm.c:3189
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #15 0x81fbb6f in ENTRC ../tpfasm.c:3593
Oct 16 02:38:40 zuccmshcd2 shc-server@1.service[2213285]: #16 0xebf80e7f in _segVDO9 /app/build/vdo9.c:22796