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Tue, 10 Jun 2025 11:27:30 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id Z1nTHaIWSGhgVAAAD6G6ig (envelope-from ); Tue, 10 Jun 2025 11:27:30 +0000 Date: Tue, 10 Jun 2025 12:27:28 +0100 From: Pedro Falcato To: Aishwarya Cc: pulehui@huaweicloud.com, 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, 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 Message-ID: References: <20250529155650.4017699-5-pulehui@huaweicloud.com> <20250610103729.72440-1-aishwarya.tcv@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250610103729.72440-1-aishwarya.tcv@arm.com> X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 39DC240002 X-Stat-Signature: 8684fms9tm3s3d3psm54jemuaup6sg86 X-Rspam-User: X-HE-Tag: 1749554852-808565 X-HE-Meta: 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 udqwX3Dm z/PR1tqfeJFumGTmM+urvto56ISJw3DCX3oK0X1G9UlaUoOhB9Ln/c1OSift33eWr69aD+WD1Gid8OwgFgU15crr+15CILkd2NnXsYL9OzdecE+Bcq0IXOo88l50Soac3HypbVio+WBgqQdwiwnP3ZA6ZSFaM24Na/e8AbsU1dw8qvB1+z72Uhojh7mIJrbrAkVldV7FdLz1V5fgirG9lV4KDtuNrNlioeHMAjYOM7cgvyT+634b1jdascBAbhax5xAG9bGD+dYuZqdodsIc7Ole9jzv5Cbo8hSnda1QUE0bO5fMVRKku3Hl6Wij0LmtUrhaBb13IRPKQE0g= 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: On Tue, Jun 10, 2025 at 11:37:29AM +0100, Aishwarya wrote: > 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. This is a different problem. > > 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 > So, basically we're not finding the uprobe (I guess CONFIG_UPROBES isn't set in defconfig, and it's not in the mm/config either), and the test just fails instead of skipping. -- Pedro