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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 v8 1/6] x86/vdso: Fix DWARF generation for getrandom() Date: Fri, 6 Feb 2026 20:36:37 +0100 Message-ID: <20260206193642.1580787-2-jremus@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260206193642.1580787-1-jremus@linux.ibm.com> References: <20260206193642.1580787-1-jremus@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjA2MDE0MyBTYWx0ZWRfX//ngAxkJ97Id yxNP+DrkxShtUE0R+EYG2O9cYVZ+PEApJzk9rdGzGg9Yn+O+V/BshCZp+5IuZyFrL/OkFq2MKv8 Rk2ZnEHUYTl2CFGwhAPcdHJhMyC+BBBtJ0qTH1NQlvnRGSmIwjXjGDU88fL7WvzNug238MmNq8d hAG9jsyyWLB9/pMkpIPTPB7sI5Eo4wjzBFB/q+EquoiwScm7ss0ZXuGwx/bkcHhYAAf39ZkXdpw f0YxNQmvtIYLKio6h20fp2bDbOJX8pH+mc8ob45UBQJbo8b0C2CkFOcJuTs5XLAIJuuBmnk1P/1 ZqBM5SZ0+IaFgM/YNLSF6DNLSOXkELebFMXXJFDrDU3BIeQNt2A4nJJ3pINfVUTUVT/4UgV9NNI kt6ipeyF3vgq3ly6baLqtdVtzVzLvou0RjflvPuyEUgFnCNdmmln6Rtfxhzjn4dJfTLepTJBRSC EU2hQi9/H40LOvuS8kA== X-Proofpoint-GUID: pFAHhq3f3BpNXuJ4YV9EfDzrLY0VwEwE X-Authority-Analysis: v=2.4 cv=DbAaa/tW c=1 sm=1 tr=0 ts=698642d3 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==: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-ORIG-GUID: j1PEc7-sCw_jGVfvfOiamut4VxifSQth 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=2026-02-06_05,2026-02-05_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 phishscore=0 adultscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1011 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2601150000 definitions=main-2602060143 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) 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/entr= y/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 @@ */ =20 #include -#include +#include =20 .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 =20 ret + CFI_ENDPROC SYM_FUNC_END(__arch_chacha20_blocks_nostack) --=20 2.51.0