Path: csiph.com!au2pb.net!feeder.erje.net!us.feeder.erje.net!news2.arglkargh.de!news.mixmin.net!weretis.net!feeder1.news.weretis.net!newsfeed.CARNet.hr!news.spin.it!bofh.it!news.nic.it!robomod From: Josh Poimboeuf Newsgroups: linux.kernel Subject: [PATCH v13 16/23] x86/asm/crypto: Create stack frames in clmul_ghash_mul/update() Date: Tue, 22 Sep 2015 18:00:04 +0200 Message-ID: References: X-Original-To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 64 Organization: linux.* mail to news gateway X-Original-Cc: linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, Michal Marek , Peter Zijlstra , Andy Lutomirski , Borislav Petkov , Linus Torvalds , Andi Kleen , Pedro Alves , Namhyung Kim , Bernd Petrovitsch , Chris J Arges , Andrew Morton , Herbert Xu , "David S. Miller" X-Original-Date: Tue, 22 Sep 2015 10:47:07 -0500 X-Original-Message-ID: <813aa225f0fa97ba3510821a17e61c43724c087a.1442935712.git.jpoimboe@redhat.com> X-Original-References: X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1230391 clmul_ghash_mul() and clmul_ghash_update() are 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 Cc: Herbert Xu Cc: David S. Miller --- arch/x86/crypto/ghash-clmulni-intel_asm.S | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/crypto/ghash-clmulni-intel_asm.S b/arch/x86/crypto/ghash-clmulni-intel_asm.S index 5d1e007..eed55c8 100644 --- a/arch/x86/crypto/ghash-clmulni-intel_asm.S +++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S @@ -18,6 +18,7 @@ #include #include +#include .data @@ -94,6 +95,7 @@ ENDPROC(__clmul_gf128mul_ble) /* void clmul_ghash_mul(char *dst, const u128 *shash) */ ENTRY(clmul_ghash_mul) + FRAME_BEGIN movups (%rdi), DATA movups (%rsi), SHASH movaps .Lbswap_mask, BSWAP @@ -101,6 +103,7 @@ ENTRY(clmul_ghash_mul) call __clmul_gf128mul_ble PSHUFB_XMM BSWAP DATA movups DATA, (%rdi) + FRAME_END ret ENDPROC(clmul_ghash_mul) @@ -109,6 +112,7 @@ ENDPROC(clmul_ghash_mul) * const u128 *shash); */ ENTRY(clmul_ghash_update) + FRAME_BEGIN cmp $16, %rdx jb .Lupdate_just_ret # check length movaps .Lbswap_mask, BSWAP @@ -128,5 +132,6 @@ ENTRY(clmul_ghash_update) PSHUFB_XMM BSWAP DATA movups DATA, (%rdi) .Lupdate_just_ret: + FRAME_END ret ENDPROC(clmul_ghash_update) -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/