Horton

Don't clobber postmaster sigmask in dsm_impl_resize.

Thomas Munro <tmunro@postgresql.org>

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Commit: 74a9ee034829153c3d5bfa270fd6372aa3147db5
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2022-07-14T14:07:15Z
Releases: 11.17 
Don't clobber postmaster sigmask in dsm_impl_resize.

Commit 4518c798 intended to block signals in regular backends that
allocate DSM segments, but dsm_impl_resize() is also reached by
dsm_postmaster_startup().  It's not OK to clobber the postmaster's
signal mask, so only manipulate the signal mask when under the
postmaster.

Back-patch to all releases, like 4518c798.

Discussion: https://postgr.es/m/CA%2BhUKGKNpK%3D2OMeea_AZwpLg7Bm4%3DgYWk7eDjZ5F6YbozfOf8w%40mail.gmail.com

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PathChange+/−
src/backend/storage/ipc/dsm_impl.c modified +8 −4

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