From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,LONGWORDS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08556C04AAF for ; Tue, 21 May 2019 13:39:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8A34208C3 for ; Tue, 21 May 2019 13:39:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728456AbfEUNjJ (ORCPT ); Tue, 21 May 2019 09:39:09 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:44651 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728176AbfEUNjJ (ORCPT ); Tue, 21 May 2019 09:39:09 -0400 Received: by mail-it1-f199.google.com with SMTP id o83so2584842itc.9 for ; Tue, 21 May 2019 06:39:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=HIpEwMoRUIhtPEOiJfYRhBBuiY1rMmkmSvNweC5cqNc=; b=XVJ5ll0txs/qBufjzroLdf7u/wqoNejmtafmU7amjat58yr9JFdFCvEpq1oQ8SrKdZ tA875foazT5LwE42tvHo5t4K7BfGa85Bo22CgPo9J2TQzrFzxfAT/psaSkYmG85GgsTr SW7vYevi+cHvdxVuoasA51hg/LPlQb6LPF0M7SHKEksr/5AewYVGFta61YEmPP9B5as0 A7IkbhNGKkddNYTdeVf647BJqMp+XivxEBWxGp2hXcSVL5mHkn1u5Sxx+r8Uz/T1Pqyo nVWrNERdby5nC+gzW+AAuPMdDM+zqKordYsvyD9QZALhhwX3dbaXjvzdfGQV57q17C8u VtUQ== X-Gm-Message-State: APjAAAUJmodNvyq1We5P06mrRSSdCKAOHsLvkse1h7kBRQVSmSCadIe9 ewrvIOZhH5E3xU93VpXpIvb+THqa0eBYskrXMjovhja5Ncx/ X-Google-Smtp-Source: APXvYqwugDzlSoELxSyOrmccgvIrUMkmFvZPH/4JEypFx8l0ZwEAwrhnWDJeusMA1pSAoJwZ7mlrOYKK9M2tLlL+FcNiN/rbOBVd MIME-Version: 1.0 X-Received: by 2002:a24:9412:: with SMTP id j18mr3731596ite.124.1558445947553; Tue, 21 May 2019 06:39:07 -0700 (PDT) Date: Tue, 21 May 2019 06:39:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001b266f058965f9a7@google.com> Subject: memory leak in v9fs_cache_session_get_cookie From: syzbot To: asmadeus@codewreck.org, ericvh@gmail.com, linux-kernel@vger.kernel.org, lucho@ionkov.net, syzkaller-bugs@googlegroups.com, v9fs-developer@lists.sourceforge.net Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: f49aa1de Merge tag 'for-5.2-rc1-tag' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1224e228a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=61dd9e15a761691d dashboard link: https://syzkaller.appspot.com/bug?extid=3a030a73b6c1e9833815 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17ffe1f8a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=151e66bca00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+3a030a73b6c1e9833815@syzkaller.appspotmail.com fl=222 nc=0 na=1] BUG: memory leak unreferenced object 0xffff88811d5b7ce0 (size 32): comm "syz-executor234", pid 7220, jiffies 4294945629 (age 16.870s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888114735700 (size 32): comm "syz-executor234", pid 7227, jiffies 4294945629 (age 16.870s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7860 (size 32): comm "syz-executor234", pid 7225, jiffies 4294945634 (age 16.820s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 33 34 00 00 00 00 00 00 4294945634...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7ce0 (size 32): comm "syz-executor234", pid 7220, jiffies 4294945629 (age 17.810s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888114735700 (size 32): comm "syz-executor234", pid 7227, jiffies 4294945629 (age 17.810s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7860 (size 32): comm "syz-executor234", pid 7225, jiffies 4294945634 (age 17.760s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 33 34 00 00 00 00 00 00 4294945634...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7ce0 (size 32): comm "syz-executor234", pid 7220, jiffies 4294945629 (age 18.730s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888114735700 (size 32): comm "syz-executor234", pid 7227, jiffies 4294945629 (age 18.730s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7860 (size 32): comm "syz-executor234", pid 7225, jiffies 4294945634 (age 18.680s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 33 34 00 00 00 00 00 00 4294945634...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7ce0 (size 32): comm "syz-executor234", pid 7220, jiffies 4294945629 (age 20.550s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888114735700 (size 32): comm "syz-executor234", pid 7227, jiffies 4294945629 (age 20.550s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7860 (size 32): comm "syz-executor234", pid 7225, jiffies 4294945634 (age 20.510s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 33 34 00 00 00 00 00 00 4294945634...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7ce0 (size 32): comm "syz-executor234", pid 7220, jiffies 4294945629 (age 21.520s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888114735700 (size 32): comm "syz-executor234", pid 7227, jiffies 4294945629 (age 21.520s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7860 (size 32): comm "syz-executor234", pid 7225, jiffies 4294945634 (age 21.470s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 33 34 00 00 00 00 00 00 4294945634...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7ce0 (size 32): comm "syz-executor234", pid 7220, jiffies 4294945629 (age 23.430s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888114735700 (size 32): comm "syz-executor234", pid 7227, jiffies 4294945629 (age 23.430s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 32 39 00 00 00 00 00 00 4294945629...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811d5b7860 (size 32): comm "syz-executor234", pid 7225, jiffies 4294945634 (age 23.380s) hex dump (first 32 bytes): 34 32 39 34 39 34 35 36 33 34 00 00 00 00 00 00 4294945634...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cabdadb>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000002cabdadb>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000002cabdadb>] slab_alloc mm/slab.c:3326 [inline] [<000000002cabdadb>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<00000000c9696bd2>] kmalloc include/linux/slab.h:547 [inline] [<00000000c9696bd2>] v9fs_random_cachetag fs/9p/cache.c:51 [inline] [<00000000c9696bd2>] v9fs_cache_session_get_cookie+0xa6/0x100 fs/9p/cache.c:67 [<000000009f2e3d4c>] v9fs_session_init+0x5c3/0x880 fs/9p/v9fs.c:485 [<000000003e76ac4c>] v9fs_mount+0x5e/0x3a0 fs/9p/vfs_super.c:135 [<00000000de1b2937>] legacy_get_tree+0x27/0x80 fs/fs_context.c:665 [<000000009d8e25aa>] vfs_get_tree+0x2e/0x120 fs/super.c:1476 [<0000000012e90ac4>] do_new_mount fs/namespace.c:2790 [inline] [<0000000012e90ac4>] do_mount+0x932/0xc50 fs/namespace.c:3110 [<0000000055e18c39>] ksys_mount+0xab/0x120 fs/namespace.c:3319 [<000000003fbb869f>] __do_sys_mount fs/namespace.c:3333 [inline] [<000000003fbb869f>] __se_sys_mount fs/namespace.c:3330 [inline] [<000000003fbb869f>] __x64_sys_mount+0x26/0x30 fs/namespace.c:3330 [<000000005a440e8e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<0000000091465610>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 executing program executing program executing program executing program executing program executing program executing program --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches