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Tue, 5 May 2026 12:33:42 +0000 (GMT) From: Jens Remus To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Steven Rostedt , Josh Poimboeuf , Indu Bhagat , Peter Zijlstra , Dylan Hatch , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Mathieu Desnoyers , Kees Cook , Sam James , Andy Lutomirski Cc: Jens Remus , bpf@vger.kernel.org, linux-mm@kvack.org, Namhyung Kim , Andrii Nakryiko , "Jose E. Marchesi" , Beau Belgrave , Florian Weimer , "Carlos O'Donell" , Masami Hiramatsu , Jiri Olsa , Arnaldo Carvalho de Melo , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Heiko Carstens , Vasily Gorbik , Ilya Leoshkevich , "Steven Rostedt (Google)" Subject: [PATCH v10 1/6] x86/vdso: Fix DWARF generation for getrandom() Date: Tue, 5 May 2026 14:33:35 +0200 Message-ID: <20260505123340.3770025-2-jremus@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260505123340.3770025-1-jremus@linux.ibm.com> References: <20260505123340.3770025-1-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-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTA1MDExNCBTYWx0ZWRfX2GRnzfkZK3nF QDtkHe4+WgAmmsutPIAWoCB8RgyNwGDI4TzKmBtaFR/xVVaZ230slWJs2dtF3CB1ZppjGuyEpyG 7o7tZuOSyHJszsu3wjMTzUSVuE2/8+yOWgMmX96zOZ0X9RGZjyiQWfyqW/+ULfYNYgbnVlfB4d0 SdC/BBIC5F/NPj7ZwEgwIQYlEFepfQxSj9rfsKJOboK065dNCL9zzzNnQ40OFYk1Hwp43DUtlsF QrLifpnCRaZfVjoq9mLtQS0gCwBXC0e63yhW+T0CBJ3oUR9e5zqjOncFIOoMpLpaEthzc8Jnl+1 nhNE0EGTDsCHWvnfd0Q7R/U+RhJ4HPkAS5lg8kIVCbjXZYQRkn799zfIFVlaHlmnOIoZqS4d07i NBqONMKaXZf8X79kIHiDJKg+kGuPlWlnnrwNDceS0mVCS6ugsUfeSZW5DqIRCruX0RfvsyJKw82 Gk63x+Scd3ZVh7+kI9Q== X-Proofpoint-ORIG-GUID: R1pcfcGcWaQmFvKCckkQUkBEXRPT_U9P X-Proofpoint-GUID: x493YNJDYyNO_h4WMWnoSuua8T33_v-k X-Authority-Analysis: v=2.4 cv=ctWrVV4i c=1 sm=1 tr=0 ts=69f9e3ac cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h: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-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-05_02,2026-04-30_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 clxscore=1015 suspectscore=0 impostorscore=0 spamscore=0 malwarescore=0 phishscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605050114 X-Rspam-User: X-Rspamd-Queue-Id: 5E39C160004 X-Rspamd-Server: rspam04 X-Stat-Signature: 4o8ew9nqzbdj8prhq1g4pdeiqh3cp5xp X-HE-Tag: 1777984449-126142 X-HE-Meta: U2FsdGVkX18nuZaSnEzAEhnI3tknZH7/5UZShmVNj/jrx+wRAB8cV8PGX2FUhmGXCm1Lkvo9r71qVCG3pATVkdEWGaCna/S9TAZA17F7ourxcFmL9Mrj4ch5PvOAp3Ad/+oWDMHOPAvLh4t/yO/D9p7ecIDYYcXWdN7PQXYb3sZz6TR6CWEgkjsfJGo5Q/NVCi88US4rXLuGYmq6xeAXjm0cDThapvKOY0Gal/liOIlApwoO9blADUqusbi1H4IeAZE3UYOfWqPf5cHWtaXI/d0d5tBSoYOarGQTw1zXpW5cLDxbtPR0F2E7OlOWVFDJUN7rgJWwgx9Q04tJVP/146QXEPsr4jmDpiPmrI0ySfaqAN2TUS2v2RMWRyD/7dfp2eBh4WShpATUAfIBKsvBafPMBEE45pgO+fjS0+EOZar/b1wHGmIGSnqFAwMK3b/3KBd4E0CuMPiAvLDMTjYdAtIF7gl9YuxVSBPk9GMnGQGC9nz1+NfrFVOuDoSwbx/H5ccqk4s/t19Fqenlt3mEzlW7ImTMIWz/ijXr5yvf9uxDoKJU9D1IrvrBGGFzyn7Q+OXSUzrQvLZwDmkAGtchVx3Y7r75nU5SGS3fhKIFLjpM+t77tT0C2yXOjld7vbjBLOA67piGfKO+Oaoj4aA1ckYgQQ85pzqVqgF++BdDiltsmXuSj63GeLP22bIuKajygVAaAZpS9ys04efmZgNHZHEHX4G9QUieYCyHesQ/YpFQpAkp8RoFC2eoXitqCemad2/jeZYPPTlcIyr6Jxh1jJciOVjtwL37PtPXlFQ17h5wa3FD3TBksV4Zo6iEwuNNYEyEZIrjZ9JbqSb8J+AYuHK179sIwQMC+rI6itmgxT636te62gwt86Z1pCghwK0PlwEbE1dHSVFMoZTbcYjb7wKvh1AnmeRPuLdvUx2p+gbHzDvXSfSlSOGqRS2pmuTFUgP+9qpQQuDJ+I2Btp9 Ew9oBZhk qFuRwJLP4gEEeEEQSr/Mjd1cJy7f9Ott/m6euSegsGTHCxGzOPkVbI81AEZvRXJvBEtjnCJ+I+V+WhAsI+d4gIwA7neGrqMFdHhoVfAxKKb9jel8wDV4V8q0DFl3ds5O9DXCloNm0JbRB6q8+ZEgk6PCnY+BbCafGlsgnwyV6YimGq0yNoYnHa+4SZFFVSSaghsvRvVdE/qTGp/Lm09hhKN0a+yBp2kF13d5RzTCHJXez7zkDHh2HbNMQno1LdHaFx2ociCKB/7HpdsX4EZBayN477RUY0cOmnruKqfVC1eT2usvVTHG+HQotHTw2hyqDha2VNeSNDAQwCxppr9UvTwlu5aMYCgVIfOY7aCoPKmwaa9Du3hQI4Q+Zixam/NUT964sJwXKOoxuZs8OWFRMzWX5M5IaNhDxUTXcXPduOLFZ+00kF2YWFp8glA== 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