| commit | 4372adfa24f2f5ddc587317d634b5389bd764106 | |
| author | Nathan Bossart <nathan@postgresql.org> | |
| Tue, 23 Jan 2024 02:44:38 +0000 (22 20:44 -0600) | ||
| committer | Nathan Bossart <nathan@postgresql.org> | |
| Tue, 23 Jan 2024 02:44:38 +0000 (22 20:44 -0600) | ||
| tree | 3fac41ae7e0a99b9c4498157bb4f4e82e64bb947 | treesnapshot (tar.gz zip) |
| parent | cdd863480c27b406ac14e94f1fe122b98ea562b4 | commitdiff |
Fix possible NULL pointer dereference in GetNamedDSMSegment().
GetNamedDSMSegment() doesn't check whether dsm_attach() returns
NULL, which creates the possibility of a NULL pointer dereference
soon after. To fix, emit an ERROR if dsm_attach() returns NULL.
This shouldn't happen, but it would be nice to avoid a segfault if
it does. In passing, tidy up the surrounding code.
Reported-by: Tom Lane
Reviewed-by: Michael Paquier, Bharath Rupireddy
Discussion: https://postgr.es/m/3348869.1705854106%40sss.pgh.pa.us
GetNamedDSMSegment() doesn't check whether dsm_attach() returns
NULL, which creates the possibility of a NULL pointer dereference
soon after. To fix, emit an ERROR if dsm_attach() returns NULL.
This shouldn't happen, but it would be nice to avoid a segfault if
it does. In passing, tidy up the surrounding code.
Reported-by: Tom Lane
Reviewed-by: Michael Paquier, Bharath Rupireddy
Discussion: https://postgr.es/m/3348869.1705854106%40sss.pgh.pa.us
| src/backend/storage/ipc/dsm_registry.c | diffblobblamehistory |