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Fix a bunch of places that called malloc and friends with no NULL check.

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Where possible, use palloc or pg_malloc instead; otherwise, insert
explicit NULL checks.

Generally speaking, these are places where an actual OOM is quite
unlikely, either because they're in client programs that don't
allocate all that much, or they're very early in process startup
so that we'd likely have had a fork() failure instead.  Hence,
no back-patch, even though this is nominally a bug fix.

Michael Paquier, with some adjustments by me

Discussion: <CAB7nPqRu07Ot6iht9i9KRfYLpDaF2ZuUv5y_+72uP23ZAGysRg@mail.gmail.com>
This commit is contained in:
Tom Lane
2016-08-30 18:22:43 -04:00
parent 9daec77e16
commit 052cc223d5
12 changed files with 108 additions and 69 deletions
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14
src/backend/bootstrap/bootstrap.c
View File

@ -47,7 +47,8 @@
uint32 bootstrap_data_checksum_version = 0; /* No checksum */
#define ALLOC(t, c) ((t *) calloc((unsigned)(c), sizeof(t)))
#define ALLOC(t, c) \
((t *) MemoryContextAllocZero(TopMemoryContext, (unsigned)(c) * sizeof(t)))
static void CheckerModeMain(void);
static void BootstrapModeMain(void);
@ -227,7 +228,7 @@ AuxiliaryProcessMain(int argc, char *argv[])
SetConfigOption("shared_buffers", optarg, PGC_POSTMASTER, PGC_S_ARGV);
break;
case 'D':
userDoption = strdup(optarg);
userDoption = pstrdup(optarg);
break;
case 'd':
{
@ -1002,13 +1003,8 @@ boot_get_type_io_data(Oid typid,
static Form_pg_attribute
AllocateAttribute(void)
{
Form_pg_attribute attribute = (Form_pg_attribute) malloc(ATTRIBUTE_FIXED_PART_SIZE);
if (!PointerIsValid(attribute))
elog(FATAL, "out of memory");
MemSet(attribute, 0, ATTRIBUTE_FIXED_PART_SIZE);
return attribute;
return (Form_pg_attribute)
MemoryContextAllocZero(TopMemoryContext, ATTRIBUTE_FIXED_PART_SIZE);
}
/*