From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0663D155322 for ; Wed, 24 Dec 2025 11:15:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766574925; cv=none; b=e2Te6108NMPA9LRDBKDDdb5A1bbqVuEIf21tTwJJ/og64T9iVxqtwE5ZgRotI74gCh+Ay2ToJotMnsXq9vbAXyOhLeFAIIBOjF8+Ztr842bHr1OmETaBcc5AWyu6leofmwxfTI2qAy3DqcL9+JttlMSydWvUUDE2yv+mMg65i0Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766574925; c=relaxed/simple; bh=6vXejrukiiPtuISDAAVP73Zlx0RumkyhHH5TTP5Ehbk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; 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List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:f00c:b0:65d:be3:3110 with SMTP id 006d021491bc7-65d0e99d928mr8503395eaf.23.1766574921958; Wed, 24 Dec 2025 03:15:21 -0800 (PST) Date: Wed, 24 Dec 2025 03:15:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <694bcb49.050a0220.35954c.001a.GAE@google.com> Subject: [syzbot] [fs?] memory leak in getname_flags From: syzbot To: brauner@kernel.org, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: b927546677c8 Merge tag 'dma-mapping-6.19-2025-12-22' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=146fef1a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d60836e327fd6756 dashboard link: https://syzkaller.appspot.com/bug?extid=00e61c43eb5e4740438f compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=153e90fc580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=126fef1a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7c1254aadd0a/disk-b9275466.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/15b98aa2b078/vmlinux-b9275466.xz kernel image: https://storage.googleapis.com/syzbot-assets/10a68a086ef8/bzImage-b9275466.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+00e61c43eb5e4740438f@syzkaller.appspotmail.com 2025/12/24 09:11:05 executed programs: 5 BUG: memory leak unreferenced object 0xffff8881098a2000 (size 4096): comm "syz.0.17", pid 6087, jiffies 4294944491 hex dump (first 32 bytes): 20 20 8a 09 81 88 ff ff 40 02 00 00 00 20 00 00 ......@.... .. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 5d427fb2): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x3b4/0x590 mm/slub.c:5270 getname_flags.part.0+0x26/0x280 fs/namei.c:146 getname_flags+0x4b/0x90 include/linux/audit.h:345 getname include/linux/fs.h:2498 [inline] __io_openat_prep+0x87/0x1a0 io_uring/openclose.c:70 io_init_req io_uring/io_uring.c:2234 [inline] io_submit_sqe io_uring/io_uring.c:2281 [inline] io_submit_sqes+0x40d/0xf40 io_uring/io_uring.c:2434 __do_sys_io_uring_enter+0x841/0xcf0 io_uring/io_uring.c:3280 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff8881009ea000 (size 4096): comm "syz.0.18", pid 6090, jiffies 4294944493 hex dump (first 32 bytes): 20 a0 9e 00 81 88 ff ff 40 02 00 00 00 20 00 00 .......@.... .. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 254b05b2): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x3b4/0x590 mm/slub.c:5270 getname_flags.part.0+0x26/0x280 fs/namei.c:146 getname_flags+0x4b/0x90 include/linux/audit.h:345 getname include/linux/fs.h:2498 [inline] __io_openat_prep+0x87/0x1a0 io_uring/openclose.c:70 io_init_req io_uring/io_uring.c:2234 [inline] io_submit_sqe io_uring/io_uring.c:2281 [inline] io_submit_sqes+0x40d/0xf40 io_uring/io_uring.c:2434 __do_sys_io_uring_enter+0x841/0xcf0 io_uring/io_uring.c:3280 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff8881009eb000 (size 4096): comm "syz.0.19", pid 6092, jiffies 4294944494 hex dump (first 32 bytes): 20 b0 9e 00 81 88 ff ff 40 02 00 00 00 20 00 00 .......@.... .. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 9f4244d8): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x3b4/0x590 mm/slub.c:5270 getname_flags.part.0+0x26/0x280 fs/namei.c:146 getname_flags+0x4b/0x90 include/linux/audit.h:345 getname include/linux/fs.h:2498 [inline] __io_openat_prep+0x87/0x1a0 io_uring/openclose.c:70 io_init_req io_uring/io_uring.c:2234 [inline] io_submit_sqe io_uring/io_uring.c:2281 [inline] io_submit_sqes+0x40d/0xf40 io_uring/io_uring.c:2434 __do_sys_io_uring_enter+0x841/0xcf0 io_uring/io_uring.c:3280 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff8881098a6000 (size 4096): comm "syz.0.20", pid 6134, jiffies 4294945094 hex dump (first 32 bytes): 20 60 8a 09 81 88 ff ff 40 02 00 00 00 20 00 00 `......@.... .. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc d8f470d9): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x3b4/0x590 mm/slub.c:5270 getname_flags.part.0+0x26/0x280 fs/namei.c:146 getname_flags+0x4b/0x90 include/linux/audit.h:345 getname include/linux/fs.h:2498 [inline] __io_openat_prep+0x87/0x1a0 io_uring/openclose.c:70 io_init_req io_uring/io_uring.c:2234 [inline] io_submit_sqe io_uring/io_uring.c:2281 [inline] io_submit_sqes+0x40d/0xf40 io_uring/io_uring.c:2434 __do_sys_io_uring_enter+0x841/0xcf0 io_uring/io_uring.c:3280 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff8881098a1000 (size 4096): comm "syz.0.21", pid 6135, jiffies 4294945095 hex dump (first 32 bytes): 20 10 8a 09 81 88 ff ff 40 02 00 00 00 20 00 00 .......@.... .. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 4828ba4d): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x3b4/0x590 mm/slub.c:5270 getname_flags.part.0+0x26/0x280 fs/namei.c:146 getname_flags+0x4b/0x90 include/linux/audit.h:345 getname include/linux/fs.h:2498 [inline] __io_openat_prep+0x87/0x1a0 io_uring/openclose.c:70 io_init_req io_uring/io_uring.c:2234 [inline] io_submit_sqe io_uring/io_uring.c:2281 [inline] io_submit_sqes+0x40d/0xf40 io_uring/io_uring.c:2434 __do_sys_io_uring_enter+0x841/0xcf0 io_uring/io_uring.c:3280 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF --- This report is generated by a bot. 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