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crypto: caam - add allocation failure handling in SPRINTFCAT macro

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GFP_ATOMIC memory allocation could fail.
In this case, avoid NULL pointer dereference and notify user.

Cc: <stable@vger.kernel.org> # 3.2+
Cc: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Horia Geanta 2014-04-18 13:01:42 +03:00 committed by Herbert Xu
parent eb4a5346e7
commit 27c5fb7a84
1 changed files with 7 additions and 3 deletions
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10
drivers/crypto/caam/error.c
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@ -16,9 +16,13 @@
char *tmp; \ char *tmp; \
\ \
tmp = kmalloc(sizeof(format) + max_alloc, GFP_ATOMIC); \ tmp = kmalloc(sizeof(format) + max_alloc, GFP_ATOMIC); \
sprintf(tmp, format, param); \ if (likely(tmp)) { \
strcat(str, tmp); \ sprintf(tmp, format, param); \
kfree(tmp); \ strcat(str, tmp); \
kfree(tmp); \
} else { \
strcat(str, "kmalloc failure in SPRINTFCAT"); \
} \
} }
static void report_jump_idx(u32 status, char *outstr) static void report_jump_idx(u32 status, char *outstr)