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Howlett" , Mark Rutland , Masami Hiramatsu , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Oleg Nesterov , Palmer Dabbelt , Peter Zijlstra , Richard Weinberger , Russell King , Song Liu , Stafford Horne , Steven Rostedt , Suren Baghdasaryan , Thomas Bogendoerfer , Thomas Gleixner , Uladzislau Rezki , Vineet Gupta , Will Deacon , bpf@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-trace-kernel@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v7 6/8] x86/module: prepare module loading for ROX allocations of text Message-ID: <20241105190427.GA2903209@thelio-3990X> References: <20241023162711.2579610-1-rppt@kernel.org> <20241023162711.2579610-7-rppt@kernel.org> <20241104232741.GA3843610@thelio-3990X> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Nov 05, 2024 at 09:02:26AM +0200, Mike Rapoport wrote: > There's a silly mistake in cfi_rewrite_endbr() in that commit, the patch > below should fix it. Can you please test? Yup, that was it! All my machines boot with this diff applied on top of next-20241105, so with that fixed, I think we are all good here. Tested-by: Nathan Chancellor > diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c > index 3407efc26528..243843e44e89 100644 > --- a/arch/x86/kernel/alternative.c > +++ b/arch/x86/kernel/alternative.c > @@ -1241,7 +1241,7 @@ static void cfi_rewrite_endbr(s32 *start, s32 *end, struct module *mod) > void *addr = (void *)s + *s; > void *wr_addr = module_writable_address(mod, addr); > > - poison_endbr(addr+16, wr_addr, false); > + poison_endbr(addr + 16, wr_addr + 16, false); > } > } Cheers, Nathan