diff options
| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2016-01-21 22:49:19 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-24 07:35:43 (GMT) |
| commit | 8691ccd764f9ecc69a6812dfe76214c86ac9ba06 (patch) | |
| tree | 18c98fd034f30855cbad084848a25599c69f8032 /arch/x86/crypto/sha-mb | |
| parent | 68874ac3304ade7ed5ebb12af00d6b9bbbca0a16 (diff) | |
| download | linux-8691ccd764f9ecc69a6812dfe76214c86ac9ba06.tar.xz | |
x86/asm/crypto: Create stack frames in crypto functions
The crypto code has several callable non-leaf functions which don't
honor CONFIG_FRAME_POINTER, which can result in bad stack traces.
Create stack frames for them when CONFIG_FRAME_POINTER is enabled.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Chris J Arges <chris.j.arges@canonical.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/6c20192bcf1102ae18ae5a242cabf30ce9b29895.1453405861.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/crypto/sha-mb')
| -rw-r--r-- | arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S | 3 | ||||
| -rw-r--r-- | arch/x86/crypto/sha-mb/sha1_mb_mgr_submit_avx2.S | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S b/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S index 672eaeb..96df6a3 100644 --- a/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S +++ b/arch/x86/crypto/sha-mb/sha1_mb_mgr_flush_avx2.S @@ -52,6 +52,7 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/linkage.h> +#include <asm/frame.h> #include "sha1_mb_mgr_datastruct.S" @@ -103,6 +104,7 @@ offset = \_offset # JOB* sha1_mb_mgr_flush_avx2(MB_MGR *state) # arg 1 : rcx : state ENTRY(sha1_mb_mgr_flush_avx2) + FRAME_BEGIN push %rbx # If bit (32+3) is set, then all lanes are empty @@ -212,6 +214,7 @@ len_is_0: return: pop %rbx + FRAME_END ret return_null: diff --git a/arch/x86/crypto/sha-mb/sha1_mb_mgr_submit_avx2.S b/arch/x86/crypto/sha-mb/sha1_mb_mgr_submit_avx2.S index c3b9447..1435acf 100644 --- a/arch/x86/crypto/sha-mb/sha1_mb_mgr_submit_avx2.S +++ b/arch/x86/crypto/sha-mb/sha1_mb_mgr_submit_avx2.S @@ -53,6 +53,7 @@ */ #include <linux/linkage.h> +#include <asm/frame.h> #include "sha1_mb_mgr_datastruct.S" @@ -98,6 +99,7 @@ lane_data = %r10 # arg 1 : rcx : state # arg 2 : rdx : job ENTRY(sha1_mb_mgr_submit_avx2) + FRAME_BEGIN push %rbx push %r12 @@ -192,6 +194,7 @@ len_is_0: return: pop %r12 pop %rbx + FRAME_END ret return_null: |