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[88.10.103.241]) by smtp.gmail.com with ESMTPSA id m17sm99738583wrn.0.2021.01.04.09.39.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 Jan 2021 09:39:56 -0800 (PST) Subject: Re: [PULL 00/35] MIPS patches for 2021-01-03 To: Peter Maydell References: <20210103205021.2837760-1-f4bug@amsat.org> <790b031a-2be6-82d0-565d-f7595e95c077@amsat.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: <47b22eb2-8600-b34f-371f-517804b9cb49@amsat.org> Date: Mon, 4 Jan 2021 18:39:55 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::42f; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wr1-x42f.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.248, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.248, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Huacai Chen , QEMU Developers , Aurelien Jarno Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/4/21 4:01 PM, Peter Maydell wrote: > On Mon, 4 Jan 2021 at 13:59, Philippe Mathieu-Daudé wrote: >> I don't have access to OSX host. I'll see to install an aarch32 chroot and >> keep testing (not sure what can differ from an i386 guest). >> If I can't find anything I'll resend the same series without the Loongson-3 >> machine, which is the single part adding QOM objects. > > You might also try using valgrind/address-sanitizer/etc, which can > sometimes flag up this kind of bug on x86-64 even if by default > it happens to work. On 32-bit I hit https://github.com/google/sanitizers/issues/954: $ qemu-system-mips64el AddressSanitizer:DEADLYSIGNAL ================================================================= ==18063==ERROR: AddressSanitizer: SEGV on unknown address 0xb7f20e40 (pc 0xb7f20e54 bp 0xbf86556c sp 0xbf86552c T16777215) ==18063==The signal is caused by a WRITE memory access. #0 0xb7f20e53 (/lib/ld-linux.so.2+0x11e53) #1 0xeb9b59 (/tmp/build/qemu-system-mips64el+0xa86b59) #2 0xe9c1c2 (/tmp/build/qemu-system-mips64el+0xa691c2) #3 0xb7f1e8ea (/lib/ld-linux.so.2+0xf8ea) #4 0xb7f0fcb9 (/lib/ld-linux.so.2+0xcb9) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/lib/ld-linux.so.2+0x11e53) ==18063==ABORTING What is funny is Aurelien is mentioned in the GCC BZ =) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84761 What libc do you use? I'll try to downgrade or reinstall an old distrib...