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 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/4372adfa24f2f5ddc587317d634b5389bd764106 Modified Files -------------- src/backend/storage/ipc/dsm_registry.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-)