diff options
| author | Horia Geanta <horia.geanta@freescale.com> | 2014-04-18 13:01:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 10:28:27 -0700 |
| commit | c40da129a2be0858f7e9dc8503fc878c0ebc5f6f (patch) | |
| tree | 761d21375258cdbb6ec6600ca18e5080d8421f94 /drivers/crypto | |
| parent | 23de3167679e331f65d9aebdfb07fbf4f2167a4c (diff) | |
crypto: caam - add allocation failure handling in SPRINTFCAT macro
commit 27c5fb7a84242b66bf1e0b2fe6bf40d19bcc5c04 upstream.
GFP_ATOMIC memory allocation could fail.
In this case, avoid NULL pointer dereference and notify user.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/error.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/crypto/caam/error.c b/drivers/crypto/caam/error.c index 9f25f5296029..0eabd81e1a90 100644 --- a/drivers/crypto/caam/error.c +++ b/drivers/crypto/caam/error.c @@ -16,9 +16,13 @@ char *tmp; \ \ tmp = kmalloc(sizeof(format) + max_alloc, GFP_ATOMIC); \ - sprintf(tmp, format, param); \ - strcat(str, tmp); \ - kfree(tmp); \ + if (likely(tmp)) { \ + sprintf(tmp, format, param); \ + strcat(str, tmp); \ + kfree(tmp); \ + } else { \ + strcat(str, "kmalloc failure in SPRINTFCAT"); \ + } \ } static void report_jump_idx(u32 status, char *outstr) |