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Wed, 11 Feb 2026 14:13:58 +0000 (GMT) From: Jens Remus To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org, Steven Rostedt Cc: Jens Remus , Josh Poimboeuf , Masami Hiramatsu , Mathieu Desnoyers , Peter Zijlstra , Ingo Molnar , Jiri Olsa , Arnaldo Carvalho de Melo , Namhyung Kim , Thomas Gleixner , Andrii Nakryiko , Indu Bhagat , "Jose E. Marchesi" , Beau Belgrave , Linus Torvalds , Andrew Morton , Florian Weimer , Kees Cook , "Carlos O'Donell" , Sam James , Dylan Hatch , Borislav Petkov , Dave Hansen , David Hildenbrand , "H. Peter Anvin" , "Liam R. Howlett" , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , Heiko Carstens , Vasily Gorbik , "Steven Rostedt (Google)" Subject: [PATCH v9 1/6] x86/vdso: Fix DWARF generation for getrandom() Date: Wed, 11 Feb 2026 15:13:52 +0100 Message-ID: <20260211141357.271402-2-jremus@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260211141357.271402-1-jremus@linux.ibm.com> References: <20260211141357.271402-1-jremus@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=WZYBqkhX c=1 sm=1 tr=0 ts=698c8ead cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=VwQbUJbxAAAA:8 a=meVymXHHAAAA:8 a=oGMlB6cnAAAA:8 a=VnNF1IyMAAAA:8 a=rsc5PF6bQGhcUx5MhlsA:9 a=2JgSa4NbpEOStq-L5dxp:22 a=NdAtdrkLVvyUPsUoGJp4:22 X-Proofpoint-GUID: coOlGK5_Y3eioVjFxn1dt-jFO-6QXvjH X-Proofpoint-ORIG-GUID: hCiBiAg_lSUcbnUCAx289HQUzG6fCHkp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjExMDEwNyBTYWx0ZWRfX2URJV1E8ko/V FYOQMGVlZpMxXxdGg9YmrhVbUUEC99giRAiNLHyPm6TJGCSYZAOBPL3g0Q1mB+br2n/IOiPaOSL OaSumIDOrcUrdU7Lb+zF6eoHEcK+hVidv3PV/kdQec4Bnj/jAq93gUKvY1EnC4h3mSKfUBUQWS3 L1wBJzwcxTeT6PmNX5CdS6Jmf4YGHzLzO+Ep1wxYd0osZaaMuLyHob071b1rwIGsgKERKp9Dp/X tzApMzOMBdHt02bysDTv0YQ0voHL0RY4ZG2IpfnO3+PvhhTIOrS/sr61M3ph+FAqLWa2k5aErYe /TKcYXJ1JOFaBXWTzjlAXo08wAs+VVtIU55hUqeSY1joNSx+pMW93SwgTyt/zIKUAWd/EpD4XB9 le0veV4Poz/qdFd9Hqh0VQxadQ+1rb4LAHKyi6mqNBK/RfDYktYxVs0aZBeVXVokBi2NLl9bGQn KumaDRN5X6qvgdLfSqw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-11_01,2026-02-11_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 phishscore=0 bulkscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 impostorscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602110107 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: A30924000E X-Stat-Signature: wk4h4x5zkj5zhjfez95uumq9ezzzuf89 X-Rspam-User: X-HE-Tag: 1770819268-211262 X-HE-Meta: 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 ZJQZ0LjF ADQGcnSe3TRGsAQFrNJZA9CDLa49d4GTECyzRqUVGI1GZ33KzXQRJUk78aa6WKPsRnICjaYQb77xxbOu18MELu25MDIIYW3nlSneQxCiPOJJPDajjl1zWbXtCwitqwAXadV0xU8Qk50c1nW/5E302sT70rghTxrw4uMyMozQ6BtqI3bw4U8DNIq3/JBMPIyL6FmjczXjO0CXa4YcwIBGXjluvVVeFy3HJ4Bl0N/R46JPzVlrzegk3VlcaF8Kpt4jir8Uq1gxd4yGOWVwyhraOMmOKU71qcq4atcGBp/igoQx4t4O/ihXNQskkm3Lzseb3yoC+Eipncyez8Ehax2WsCVOB0qwSGXE914n9FbJ+/fXFwrd4L1ZqJW5LbP+XdVcEW21sR1nHzMkLiIBl8UyqelyH1ISu67nESguBvV3cbUa1G18x3UXPDMsSKA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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) Acked-by: H. Peter Anvin (Intel) Signed-off-by: Jens Remus --- arch/x86/entry/vdso/vdso64/vgetrandom-chacha.S | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/entry/vdso/vdso64/vgetrandom-chacha.S b/arch/x86/entry/vdso/vdso64/vgetrandom-chacha.S index bcba5639b8ee..cc82da9216fb 100644 --- a/arch/x86/entry/vdso/vdso64/vgetrandom-chacha.S +++ b/arch/x86/entry/vdso/vdso64/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) -- 2.51.0