From nobody Wed Feb 11 16:45:55 2026 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FBD922D4F1; Thu, 29 May 2025 15:54:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748534076; cv=none; b=Uz6Y8J+bR6ig4RoJ/v4pUnI8HBfYYGXWpXY3zJllcRp/8xvDCJQM+bNdOC3JJmmXUCsj3mQ55Ijq63C+ReSqw2dd7KU4MCO/xXJzpJYLjmJhJRk8u5S3bLPQqib1TXEoVyCNBkq/ZrBoyh/sfrHllrvkv0LUoLUUI6bdId71/UQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748534076; c=relaxed/simple; bh=9iykyd3qskHYYgZ8CHKhOP7iD/5TnA6IMb1PXIV/U7A=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=UyAqqA5P2FAn5CqrFAWRis+GSOlsgS8juC9afJd9ATdND/gPRbLtidDbPcQyGtGGXXNg5Ov81HY+9tXjOBLusA3SV3h5P5qj0suG9pqHQbxNR84OcyB9pyolXCsGhZ6LkTNSOxMcPec7etfAn9qemU5pIDlMjb4FVU73XOvE754= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4b7WCD5f4YzYQv88; Thu, 29 May 2025 23:54:32 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.252]) by mail.maildlp.com (Postfix) with ESMTP id DC56B1A1599; Thu, 29 May 2025 23:54:31 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP3 (Coremail) with SMTP id _Ch0CgBX98EzgzhooMK5Ng--.57784S6; Thu, 29 May 2025 23:54:31 +0800 (CST) From: Pu Lehui To: mhiramat@kernel.org, oleg@redhat.com, peterz@infradead.org, akpm@linux-foundation.org, Liam.Howlett@oracle.com, lorenzo.stoakes@oracle.com, vbabka@suse.cz, jannh@google.com, pfalcato@suse.de Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, pulehui@huawei.com Subject: [PATCH v1 4/4] selftests/mm: Add test about uprobe pte be orphan during vma merge Date: Thu, 29 May 2025 15:56:50 +0000 Message-Id: <20250529155650.4017699-5-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250529155650.4017699-1-pulehui@huaweicloud.com> References: <20250529155650.4017699-1-pulehui@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _Ch0CgBX98EzgzhooMK5Ng--.57784S6 X-Coremail-Antispam: 1UD129KBjvJXoW7ury3JF1xCry8KFyfJrykuFg_yoW8uF4fp3 WkAwn8tw4rKw13t343Zryq9a1fKrs7Jr47t34fXFy8Z3W7tr9xJF40kFyDXFWkXrWvqrn8 C39xJFWfCrWUXaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPSb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAV Cq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0 rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2Ix0cI8IcVCY1x0267 AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E 14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7 xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Y z7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lFIxGxcIEc7CjxVA2Y2ka0xkIwI1lc7CjxVAaw2 AFwI0_Jw0_GFyl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAq x4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r 43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF 7I0E14v26F4j6r4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI 0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7I U1aLvJUUUUU== X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Pu Lehui Add test about uprobe pte be orphan during vma merge. Signed-off-by: Pu Lehui --- tools/testing/selftests/mm/merge.c | 42 ++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/tools/testing/selftests/mm/merge.c b/tools/testing/selftests/m= m/merge.c index c76646cdf6e6..8e1f38d23384 100644 --- a/tools/testing/selftests/mm/merge.c +++ b/tools/testing/selftests/mm/merge.c @@ -2,11 +2,13 @@ =20 #define _GNU_SOURCE #include "../kselftest_harness.h" +#include #include #include #include #include #include +#include #include "vm_util.h" =20 FIXTURE(merge) @@ -452,4 +454,44 @@ TEST_F(merge, forked_source_vma) ASSERT_EQ(procmap->query.vma_end, (unsigned long)ptr2 + 5 * page_size); } =20 +TEST_F(merge, handle_uprobe_upon_merged_vma) +{ + const size_t attr_sz =3D sizeof(struct perf_event_attr); + unsigned int page_size =3D self->page_size; + const char *probe_file =3D "./foo"; + char *carveout =3D self->carveout; + struct perf_event_attr attr; + unsigned long type; + void *ptr1, *ptr2; + int fd; + + fd =3D open(probe_file, O_RDWR|O_CREAT, 0600); + ASSERT_GE(fd, 0); + + ASSERT_EQ(ftruncate(fd, page_size), 0); + ASSERT_EQ(read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type),= 0); + + memset(&attr, 0, attr_sz); + attr.size =3D attr_sz; + attr.type =3D type; + attr.config1 =3D (__u64)(long)probe_file; + attr.config2 =3D 0x0; + + ASSERT_GE(syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0), 0); + + ptr1 =3D mmap(&carveout[page_size], 10 * page_size, PROT_EXEC, + MAP_PRIVATE | MAP_FIXED, fd, 0); + ASSERT_NE(ptr1, MAP_FAILED); + + ptr2 =3D mremap(ptr1, page_size, 2 * page_size, + MREMAP_MAYMOVE | MREMAP_FIXED, ptr1 + 5 * page_size); + ASSERT_NE(ptr2, MAP_FAILED); + + ASSERT_NE(mremap(ptr2, page_size, page_size, + MREMAP_MAYMOVE | MREMAP_FIXED, ptr1), MAP_FAILED); + + close(fd); + remove(probe_file); +} + TEST_HARNESS_MAIN --=20 2.34.1