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BUG#16069598 - SERVER CRASH BY NULL POINTER DEREFERENCING IN

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MEM_HEAP_CREATE_BLOCK() 

PROBLEM
-------

If we give start mysqld with the option --innodb_log_buffer_size=50GB
,then  mem_area_alloc() function fails to allocate memory and returns
NULL.In debug version we assert at this point,but there is no check in
release version and we get a segmentation fault.

FIX
---
Added a log message saying that we are unable to allocate memory.
After this message we assert.

[Approved by Kevin http://rb.no.oracle.com/rb/r/2065 ]
This commit is contained in:
Aditya A 2013-03-07 14:44:35 +05:30
parent 6ff9305f96
commit 5f502ea371
1 changed files with 7 additions and 1 deletions
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8
storage/innobase/mem/mem0mem.c
View File

@ -353,7 +353,13 @@ mem_heap_create_block(
block = (mem_block_t*) buf_block->frame;
}
ut_ad(block);
if(!block) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Unable to allocate memory of size %lu.\n",
len);
ut_error;
}
block->buf_block = buf_block;
block->free_block = NULL;
#else /* !UNIV_HOTBACKUP */