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GET /api/patches/2217753/?format=api
{ "id": 2217753, "url": "http://patchwork.ozlabs.org/api/patches/2217753/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260330133035.287842-5-yebin@huaweicloud.com/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/projects/8/?format=api", "name": "Linux ext4 filesystem development", "link_name": "linux-ext4", "list_id": "linux-ext4.vger.kernel.org", "list_email": "linux-ext4@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260330133035.287842-5-yebin@huaweicloud.com>", "list_archive_url": null, "date": "2026-03-30T13:30:34", "name": "[v5,4/5] ext4: fix possible null-ptr-deref in extents_kunit_exit()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e6b8b65169d42d9fdd92994215f430b45c8fda95", "submitter": { "id": 85089, "url": "http://patchwork.ozlabs.org/api/people/85089/?format=api", "name": "Ye Bin", "email": "yebin@huaweicloud.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260330133035.287842-5-yebin@huaweicloud.com/mbox/", "series": [ { "id": 498033, "url": "http://patchwork.ozlabs.org/api/series/498033/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=498033", "date": "2026-03-30T13:30:32", "name": "Fix some issues about ext4-test", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/498033/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217753/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217753/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=N5hM=B6=vger.kernel.org=linux-ext4+bounces-15538-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-ext4@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@ozlabs.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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gandalf.ozlabs.org;\n dmarc=none (p=none dis=none) header.from=huaweicloud.com;\n spf=pass (client-ip=172.105.105.114; helo=tor.lore.kernel.org;\n envelope-from=linux-ext4+bounces-15538-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org", "i=1; smtp.subspace.kernel.org;\n dmarc=none (p=none dis=none) header.from=huaweicloud.com;\n spf=none smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51" ], "From": "Ye Bin <yebin@huaweicloud.com>", "To": "tytso@mit.edu,\n\tadilger.kernel@dilger.ca,\n\tlinux-ext4@vger.kernel.org", "Cc": "jack@suse.cz", "Subject": "[PATCH v5 4/5] ext4: fix possible null-ptr-deref in\n extents_kunit_exit()", "Date": "Mon, 30 Mar 2026 21:30:34 +0800", "Message-Id": "<20260330133035.287842-5-yebin@huaweicloud.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260330133035.287842-1-yebin@huaweicloud.com>", "References": "<20260330133035.287842-1-yebin@huaweicloud.com>", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-CM-TRANSID": "gCh0CgDHn0p7e8pp7U0sCw--.17260S8", "X-Coremail-Antispam": "1UD129KBjvJXoW7uFyrtw48CF1fCr1ruw1fCrg_yoW8XFykpr\n\tsxCF4UKr48Zw1UCFWxGFy5tryakan7CFW7uryxJa1agayDCry8Kr1UKr1UKFZ8XF48JFy5\n\tuF10v34UK3W3KaDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n\t9KBjDU0xBIdaVrnRJUUUvEb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k2\n\t6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAV\n\tCq3wA2048vs2IY020Ec7CjxVAFwI0_Gr0_Xr1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0\n\trcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267\n\tAKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E\n\t14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7\n\txfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Y\n\tz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7\n\tv_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF\n\t1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIx\n\tAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI\n\t42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWI\n\tevJa73UjIFyTuYvjxU2CJmUUUUU", "X-CM-SenderInfo": "p1hex046kxt4xhlfz01xgou0bp/", "X-Spam-Status": "No, score=-1.1 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDMARC_MISSING,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,\n\tSPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "From: Ye Bin <yebin10@huawei.com>\n\nThere's issue as follows:\nKASAN: null-ptr-deref in range [0x00000000000002c0-0x00000000000002c7]\nTainted: [E]=UNSIGNED_MODULE, [N]=TEST\nRIP: 0010:extents_kunit_exit+0x2e/0xc0 [ext4_test]\nCall Trace:\n <TASK>\n kunit_try_run_case_cleanup+0xbc/0x100 [kunit]\n kunit_generic_run_threadfn_adapter+0x89/0x100 [kunit]\n kthread+0x408/0x540\n ret_from_fork+0xa76/0xdf0\n ret_from_fork_asm+0x1a/0x30\n\nAbove issue happens as extents_kunit_init() init testcase failed.\nSo test if testcase is inited success.\n\nFixes: cb1e0c1d1fad (\"ext4: kunit tests for extent splitting and conversion\")\nSigned-off-by: Ye Bin <yebin10@huawei.com>\nReviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>\nReviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>\n---\n fs/ext4/extents-test.c | 7 +++++--\n 1 file changed, 5 insertions(+), 2 deletions(-)", "diff": "diff --git a/fs/ext4/extents-test.c b/fs/ext4/extents-test.c\nindex 4042bc8a95e2..6b53a3f39fcd 100644\n--- a/fs/ext4/extents-test.c\n+++ b/fs/ext4/extents-test.c\n@@ -142,9 +142,12 @@ static struct file_system_type ext_fs_type = {\n \n static void extents_kunit_exit(struct kunit *test)\n {\n-\tstruct super_block *sb = k_ctx.k_ei->vfs_inode.i_sb;\n-\tstruct ext4_sb_info *sbi = sb->s_fs_info;\n+\tstruct ext4_sb_info *sbi;\n \n+\tif (!k_ctx.k_ei)\n+\t\treturn;\n+\n+\tsbi = k_ctx.k_ei->vfs_inode.i_sb->s_fs_info;\n \text4_es_unregister_shrinker(sbi);\n \tdeactivate_super(sbi->s_sb);\n \tkfree(sbi);\n", "prefixes": [ "v5", "4/5" ] }