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pgsql: Avoid possible crash within libsanitizer. 4+ messages / 1 participants [nested] [flat]
* pgsql: Avoid possible crash within libsanitizer. @ 2025-11-05 16:09 Tom Lane <tgl@sss.pgh.pa.us> 0 siblings, 0 replies; 4+ messages in thread From: Tom Lane @ 2025-11-05 16:09 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Avoid possible crash within libsanitizer. We've successfully used libsanitizer for awhile with the undefined and alignment sanitizers, but with some other sanitizers (at least thread and hwaddress) it crashes due to internal recursion before it's fully initialized itself. It turns out that that's due to the "__ubsan_default_options" hack installed by commit f686ae82f, and we can fix it by ensuring that __ubsan_default_options is built without any sanitizer instrumentation hooks. Reported-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Reported-by: Alexander Lakhin <exclusion@gmail.com> Diagnosed-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Fix-suggested-by: Jacob Champion <jacob.champion@enterprisedb.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/F7543B04-E56C-4D68-A040-B14CCBAD38F1@gmail.com Discussion: https://postgr.es/m/dbf77bf7-6e54-ed8a-c4ae-d196eeb664ce@gmail.com Backpatch-through: 16 Branch ------ REL_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/c775bf048abdb625d862c94f945c2fa11ccf0907 Modified Files -------------- src/backend/main/main.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 4+ messages in thread
* pgsql: Avoid possible crash within libsanitizer. @ 2025-11-05 16:09 Tom Lane <tgl@sss.pgh.pa.us> 0 siblings, 0 replies; 4+ messages in thread From: Tom Lane @ 2025-11-05 16:09 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Avoid possible crash within libsanitizer. We've successfully used libsanitizer for awhile with the undefined and alignment sanitizers, but with some other sanitizers (at least thread and hwaddress) it crashes due to internal recursion before it's fully initialized itself. It turns out that that's due to the "__ubsan_default_options" hack installed by commit f686ae82f, and we can fix it by ensuring that __ubsan_default_options is built without any sanitizer instrumentation hooks. Reported-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Reported-by: Alexander Lakhin <exclusion@gmail.com> Diagnosed-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Fix-suggested-by: Jacob Champion <jacob.champion@enterprisedb.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/F7543B04-E56C-4D68-A040-B14CCBAD38F1@gmail.com Discussion: https://postgr.es/m/dbf77bf7-6e54-ed8a-c4ae-d196eeb664ce@gmail.com Backpatch-through: 16 Branch ------ REL_17_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/a9515f294de153360e58d17a9aa468532cbab7e5 Modified Files -------------- src/backend/main/main.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 4+ messages in thread
* pgsql: Avoid possible crash within libsanitizer. @ 2025-11-05 16:09 Tom Lane <tgl@sss.pgh.pa.us> 0 siblings, 0 replies; 4+ messages in thread From: Tom Lane @ 2025-11-05 16:09 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Avoid possible crash within libsanitizer. We've successfully used libsanitizer for awhile with the undefined and alignment sanitizers, but with some other sanitizers (at least thread and hwaddress) it crashes due to internal recursion before it's fully initialized itself. It turns out that that's due to the "__ubsan_default_options" hack installed by commit f686ae82f, and we can fix it by ensuring that __ubsan_default_options is built without any sanitizer instrumentation hooks. Reported-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Reported-by: Alexander Lakhin <exclusion@gmail.com> Diagnosed-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Fix-suggested-by: Jacob Champion <jacob.champion@enterprisedb.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/F7543B04-E56C-4D68-A040-B14CCBAD38F1@gmail.com Discussion: https://postgr.es/m/dbf77bf7-6e54-ed8a-c4ae-d196eeb664ce@gmail.com Backpatch-through: 16 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/6d8acb777715c401925b7c26e16378b2716aa6a5 Modified Files -------------- src/backend/main/main.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 4+ messages in thread
* pgsql: Avoid possible crash within libsanitizer. @ 2025-11-05 16:09 Tom Lane <tgl@sss.pgh.pa.us> 0 siblings, 0 replies; 4+ messages in thread From: Tom Lane @ 2025-11-05 16:09 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Avoid possible crash within libsanitizer. We've successfully used libsanitizer for awhile with the undefined and alignment sanitizers, but with some other sanitizers (at least thread and hwaddress) it crashes due to internal recursion before it's fully initialized itself. It turns out that that's due to the "__ubsan_default_options" hack installed by commit f686ae82f, and we can fix it by ensuring that __ubsan_default_options is built without any sanitizer instrumentation hooks. Reported-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Reported-by: Alexander Lakhin <exclusion@gmail.com> Diagnosed-by: Emmanuel Sibi <emmanuelsibi.mec@gmail.com> Fix-suggested-by: Jacob Champion <jacob.champion@enterprisedb.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/F7543B04-E56C-4D68-A040-B14CCBAD38F1@gmail.com Discussion: https://postgr.es/m/dbf77bf7-6e54-ed8a-c4ae-d196eeb664ce@gmail.com Backpatch-through: 16 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/d4baa327a1c9c6a6e0b8f8d0ea410d19bf5dde33 Modified Files -------------- src/backend/main/main.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 4+ messages in thread
end of thread, other threads:[~2025-11-05 16:09 UTC | newest] Thread overview: 4+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2025-11-05 16:09 pgsql: Avoid possible crash within libsanitizer. Tom Lane <tgl@sss.pgh.pa.us> 2025-11-05 16:09 pgsql: Avoid possible crash within libsanitizer. Tom Lane <tgl@sss.pgh.pa.us> 2025-11-05 16:09 pgsql: Avoid possible crash within libsanitizer. Tom Lane <tgl@sss.pgh.pa.us> 2025-11-05 16:09 pgsql: Avoid possible crash within libsanitizer. Tom Lane <tgl@sss.pgh.pa.us>
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