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imf08.hostedemail.com; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=arm.com (policy=none); spf=none (imf08.hostedemail.com: domain of aishwarya.tcv@foss.arm.com has no SPF policy when checking 217.140.110.172) smtp.mailfrom=aishwarya.tcv@foss.arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1749551854; a=rsa-sha256; cv=none; b=BHvcDXnNFrpq9HmdQ28PtDFFUiC371aG9qt2LAKdaNmp7LenIhonojR3KnVSt8KdZkFOns qQv0jaCtgb/rsEAPS8KXIxfXwjWrEvF3BV1nZVu0+do5K1FWFlN4y3tZ/JHxFd0G3cn/h/ ve7WU/yuewXwdxMH5sCOGgaZ1O0GEMY= Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6486C14BF; Tue, 10 Jun 2025 03:37:13 -0700 (PDT) Received: from usa.arm.com (unknown [10.57.49.127]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 031EB3F673; Tue, 10 Jun 2025 03:37:29 -0700 (PDT) From: Aishwarya To: pulehui@huaweicloud.com Cc: Liam.Howlett@oracle.com, akpm@linux-foundation.org, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, mhiramat@kernel.org, oleg@redhat.com, peterz@infradead.org, pfalcato@suse.de, pulehui@huawei.com, stable@vger.kernel.org, vbabka@suse.cz, broonie@kernel.org, Ryan.Roberts@arm.com, Dev.Jain@arm.com Subject: Re: [PATCH v1 4/4] selftests/mm: Add test about uprobe pte be orphan during vma merge Date: Tue, 10 Jun 2025 11:37:29 +0100 Message-Id: <20250610103729.72440-1-aishwarya.tcv@arm.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250529155650.4017699-5-pulehui@huaweicloud.com> References: <20250529155650.4017699-5-pulehui@huaweicloud.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: E75AA16000E X-Stat-Signature: gzxaumg1dw5sg8rkwck77ytageussyzg X-Rspam-User: X-HE-Tag: 1749551853-60415 X-HE-Meta: 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 3xLF86vW 2084bo2TeAuiDA7B9vLxliR61ADbkYSLJ+xJS8qripUvOn/RcLXKzkGgwulMuNMwZtyPA62xGvlwxiL9VTmY8ciiDh7h8elf4R2wUmvG3hagUmSBGzDuEIvWCMvL+jXrcy4dhTshm7dAc9BGVqqDFOQf0vOXT2rQCTGSHDRWFiaviuQk8q6FJ+04vU4Cyas5jBIygEm52ydopXW+hxdV/ppjVpVJ3IVzhO4Eo4t6g9OHjN16d+D1cE8VTnbpLrTxGuu00JPhBnA1LiPRQIuOS74mQEpVcoSyIhq9i5gJNCEERSCjALLvAqAW9Vw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, kselftest-mm test 'merge.handle_uprobe_upon_merged_vma' is failing against mainline master v6.16-rc1 with Arm64 on Ampere Altra/TX2 in our CI. The kernel was built using defconfig along with the additional config fragment from: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/testing/selftests/mm/config I understand the failure is already being discussed and is expected to be addressed by including sys/syscall.h.Sharing this observation here for reference. A bisect identified commit efe99fabeb11b030c89a7dc5a5e7a7558d0dc7ec as the first bad commit. This was bisected against tag v6.16-rc1 from: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git This test passes on Linux version v6.15-13627-g119b1e61a769. Failure log: 7151 12:46:54.627936 # # # RUN merge.handle_uprobe_upon_merged_vma ... 7152 12:46:54.639014 # # f /sys/bus/event_source/devices/uprobe/type 7153 12:46:54.639306 # # fopen: No such file or directory 7154 12:46:54.650451 # # # merge.c:473:handle_uprobe_upon_merged_vma:Expected read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) (1) == 0 (0) 7155 12:46:54.650730 # # # handle_uprobe_upon_merged_vma: Test terminated by assertion 7156 12:46:54.661750 # # # FAIL merge.handle_uprobe_upon_merged_vma 7157 12:46:54.662030 # # not ok 8 merge.handle_uprobe_upon_merged_vma Git bisection log: git bisect start # status: waiting for both good and bad commits # good: [119b1e61a769aa98e68599f44721661a4d8c55f3] Merge tag 'riscv-for-linus-6.16-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux git bisect good 119b1e61a769aa98e68599f44721661a4d8c55f3 # status: waiting for bad commit, 1 good commit known # bad: [19272b37aa4f83ca52bdf9c16d5d81bdd1354494] Linux 6.16-rc1 git bisect bad 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 # bad: [b3154a6ff1f53b794c01096577700f35b1be9cc2] Merge tag 'sh-for-v6.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux git bisect bad b3154a6ff1f53b794c01096577700f35b1be9cc2 # bad: [5b032cac622533631b8f9b7826498b7ce75001c6] Merge tag 'ubifs-for-linus-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs git bisect bad 5b032cac622533631b8f9b7826498b7ce75001c6 # good: [2da20fd904f87f7bb31b79719bc3dda4093f8cdb] kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count git bisect good 2da20fd904f87f7bb31b79719bc3dda4093f8cdb # good: [d3c82f618a9c2b764b7651afe16594ffeb50ade9] Merge tag 'mm-hotfixes-stable-2025-06-06-16-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm git bisect good d3c82f618a9c2b764b7651afe16594ffeb50ade9 # bad: [efe99fabeb11b030c89a7dc5a5e7a7558d0dc7ec] selftests/mm: add test about uprobe pte be orphan during vma merge git bisect bad efe99fabeb11b030c89a7dc5a5e7a7558d0dc7ec # good: [2b12d06c37fd3a394376f42f026a7478d826ed63] mm: fix uprobe pte be overwritten when expanding vma git bisect good 2b12d06c37fd3a394376f42f026a7478d826ed63 # good: [6fb6223347d5d9512875120267c117e7437f0db6] selftests/mm: extract read_sysfs and write_sysfs into vm_util git bisect good 6fb6223347d5d9512875120267c117e7437f0db6 # first bad commit: [efe99fabeb11b030c89a7dc5a5e7a7558d0dc7ec] selftests/mm: add test about uprobe pte be orphan during vma merge Thanks, Aishwarya