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Thu, 25 Sep 2025 14:06:49 -0700 (PDT) Date: Thu, 25 Sep 2025 14:06:49 -0700 In-Reply-To: <20250925144934.150299-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68d5aee9.050a0220.25d7ab.008a.GAE@google.com> Subject: [syzbot ci] Re: hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list From: syzbot ci To: akpm@linux-foundation.org, david@redhat.com, kartikey406@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, muchun.song@linux.dev, osalvador@suse.de, syzbot@syzkaller.appspotmail.com Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 6C6204000B X-Stat-Signature: q7wf4awqgjxqa8p699samm1m4fu6hdpw X-Rspam-User: X-HE-Tag: 1758834410-763135 X-HE-Meta: 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 QMsKujag 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 gV5vct5R NATWfDWO6YE0svT23eI0oByhU1uXqiTcLz+eANBu8y8HUFecYPUEr6NVZjR0sy4864G3nDHqhk1ywB/94DT1qviMe9cKBJEO24+ilKvzCB8= 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: syzbot ci has tested the following series [v1] hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list https://lore.kernel.org/all/20250925144934.150299-1-kartikey406@gmail.com * [PATCH] hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list and found the following issue: WARNING: lock held when returning to user space in hugetlb_vmdelete_list Full report is available here: https://ci.syzbot.org/series/7d3a090c-ec8f-4d0c-8f7b-8797e63f1fde *** WARNING: lock held when returning to user space in hugetlb_vmdelete_list tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux base: 07e27ad16399afcd693be20211b0dfae63e0615f arch: amd64 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 config: https://ci.syzbot.org/builds/06671e7c-eebd-4d11-9f0d-d9dae5637c0a/config C repro: https://ci.syzbot.org/findings/75fcdb87-67fc-45ee-a70d-3064e8c1126c/c_repro syz repro: https://ci.syzbot.org/findings/75fcdb87-67fc-45ee-a70d-3064e8c1126c/syz_repro ================================================ WARNING: lock held when returning to user space! syzkaller #0 Not tainted ------------------------------------------------ syz.0.17/5991 is leaving the kernel with locks still held! 1 lock held by syz.0.17/5991: #0: ffff88801f7dcce8 (&resv_map->rw_sema){+.+.}-{4:4}, at: hugetlb_vmdelete_list+0x67/0x230 fs/hugetlbfs/inode.c:490 *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com.