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McKenney" , Boqun Feng , "H . Peter Anvin" , Paul Turner , linux-api@vger.kernel.org, Christian Brauner , Florian Weimer , David.Laight@ACULAB.COM, carlos@redhat.com, Peter Oskolkov , Alexander Mikhalitsyn , Chris Kennelly , Mathieu Desnoyers , Nathan Chancellor Subject: [RFC PATCH tip] rseq: Fix: Increase AT_VECTOR_SIZE_BASE to match rseq auxvec entries Date: Wed, 4 Jan 2023 14:20:54 -0500 Message-Id: <20230104192054.34046-1-mathieu.desnoyers@efficios.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RDNS_NONE,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754121309952325503?= X-GMAIL-MSGID: =?utf-8?q?1754121309952325503?= Two new auxiliary vector entries are introduced for rseq without matching increment of the AT_VECTOR_SIZE_BASE, which causes failures with CONFIG_HARDENED_USERCOPY=y. Reported-by: Nathan Chancellor Link: https://lore.kernel.org/r/Y7XJKZhuU9VJZQ11@dev-arch.thelio-3990X Fixes: 317c8194e6ae ("rseq: Introduce feature size and alignment ELF auxiliary vector entries") Signed-off-by: Mathieu Desnoyers Tested-by: Nathan Chancellor --- include/linux/auxvec.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/auxvec.h b/include/linux/auxvec.h index f68d0ec2d740..407f7005e6d6 100644 --- a/include/linux/auxvec.h +++ b/include/linux/auxvec.h @@ -4,6 +4,6 @@ #include -#define AT_VECTOR_SIZE_BASE 20 /* NEW_AUX_ENT entries in auxiliary table */ +#define AT_VECTOR_SIZE_BASE 22 /* NEW_AUX_ENT entries in auxiliary table */ /* number of "#define AT_.*" above, minus {AT_NULL, AT_IGNORE, AT_NOTELF} */ #endif /* _LINUX_AUXVEC_H */