From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 494F21A23BE; Tue, 22 Apr 2025 18:35:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745346931; cv=none; b=b51Td/WyMAxZ7jgqoTxzquzsbclXtEAUPKJEvOtUAluVUaIfq0FIifymaHQ++4wgMu8/S6MLbk6Qy/p2QOR1B0RN4JX1afCD6BLfZErkKmCHKaWwgoNaurM5zH9KAOslAWB1VliNWzlNpzmSt8Hwc0UzrjnPTgYgSSEINWkkHjw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745346931; c=relaxed/simple; bh=QhCwiPnd0gPBrQvImDQRKzcjy0jlFgvpErnwXkD5KI4=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=O25xwVcTXNssLD57c4UooF3SyXUu27+cAegfIhLqTKjUUIKsdiRB3SC067QuJ8lItKJHdeNKyWQelMoWZm+1d4AGgK49enqN32HWeTzgU3z0jHEyb3n6VoS8jX89O4Suh2RTYS48U7g3vUIonOjUNq/kD/Ay5pEiOWhCFDIY2jk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF154C4CEE9; Tue, 22 Apr 2025 18:35:30 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.98) (envelope-from ) id 1u7IUk-0000000Fw7R-0tvf; Tue, 22 Apr 2025 14:37:22 -0400 Message-ID: <20250422183722.068940486@goodmis.org> User-Agent: quilt/0.68 Date: Tue, 22 Apr 2025 14:34:40 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Josh Poimboeuf , Jens Remus , x86@kernel.org, Peter Zijlstra , Ingo Molnar , Indu Bhagat , Andy Lutomirski , Thomas Gleixner , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Subject: [PATCH v5 1/6] x86/vdso: Fix DWARF generation for getrandom() References: <20250422183439.895236512@goodmis.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 From: Josh Poimboeuf Add CFI annotations to the VDSO implementation of getrandom() so it will have valid DWARF unwinding metadata. Fixes: 33385150ac45 ("x86: vdso: Wire up getrandom() vDSO implementation") Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt (Google) --- arch/x86/entry/vdso/vgetrandom-chacha.S | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/entry/vdso/vgetrandom-chacha.S b/arch/x86/entry/vdso/vgetrandom-chacha.S index bcba5639b8ee..cc82da9216fb 100644 --- a/arch/x86/entry/vdso/vgetrandom-chacha.S +++ b/arch/x86/entry/vdso/vgetrandom-chacha.S @@ -4,7 +4,7 @@ */ #include -#include +#include .section .rodata, "a" .align 16 @@ -22,7 +22,7 @@ CONSTANTS: .octa 0x6b20657479622d323320646e61707865 * rcx: number of 64-byte blocks to write to output */ SYM_FUNC_START(__arch_chacha20_blocks_nostack) - + CFI_STARTPROC .set output, %rdi .set key, %rsi .set counter, %rdx @@ -175,4 +175,5 @@ SYM_FUNC_START(__arch_chacha20_blocks_nostack) pxor temp,temp ret + CFI_ENDPROC SYM_FUNC_END(__arch_chacha20_blocks_nostack) -- 2.47.2