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-0700 (PDT) MIME-Version: 1.0 References: <0000000000008a5a2e05ea318aa9@google.com> In-Reply-To: <0000000000008a5a2e05ea318aa9@google.com> From: Dmitry Vyukov Date: Tue, 4 Oct 2022 10:52:43 +0200 Message-ID: Subject: Re: [syzbot] memory leak in __get_metapage To: syzbot , shaggy@kernel.org, jfs-discussion@lists.sourceforge.net Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1664873577; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=kDenzrDIARPlIFnV/nyFXpagvMf5CwxL44CV5BFQmi4=; b=tkrxCbntvr5ak8D3qvgQpNbuesOcVz2to4RkJStedMKzhIRtcgnUiYzgX1Nvd5OAyfZ34t 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header.from=google.com X-Rspamd-Server: rspam06 X-Rspam-User: X-Stat-Signature: gsuboupe9j7rbptyy5h3tymew9zmehmd X-HE-Tag: 1664873576-874496 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: On Tue, 4 Oct 2022 at 10:49, syzbot wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 4fe89d07dcc2 Linux 6.0 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=169a7924880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=21254cf9c7c084e0 > dashboard link: https://syzkaller.appspot.com/bug?extid=389b82b29093b3e2640a > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10bdd7ec880000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/651a252f7035/disk-4fe89d07.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/776feb8e0e5b/vmlinux-4fe89d07.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+389b82b29093b3e2640a@syzkaller.appspotmail.com > > BUG: memory leak > unreferenced object 0xffff888114339e80 (size 128): > comm "syz-executor.0", pid 3673, jiffies 4295017005 (age 12.610s) > hex dump (first 32 bytes): > 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [] mempool_alloc+0x73/0x230 mm/mempool.c:392 > [] alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] +jfs maintainers > [] __get_metapage+0x38a/0x9b0 fs/jfs/jfs_metapage.c:651 > [] diNewExt+0x3f2/0x9d0 fs/jfs/jfs_imap.c:2265 > [] diAllocExt fs/jfs/jfs_imap.c:1945 [inline] > [] diAllocAG+0x9a4/0xd50 fs/jfs/jfs_imap.c:1662 > [] diAlloc+0x31f/0x900 fs/jfs/jfs_imap.c:1583 > [] ialloc+0x6a/0x3a0 fs/jfs/jfs_inode.c:56 > [] jfs_mkdir+0xf7/0x480 fs/jfs/namei.c:225 > [] vfs_mkdir+0x223/0x340 fs/namei.c:4013 > [] do_mkdirat+0x1a5/0x1e0 fs/namei.c:4038 > [] __do_sys_mkdir fs/namei.c:4058 [inline] > [] __se_sys_mkdir fs/namei.c:4056 [inline] > [] __x64_sys_mkdir+0x69/0x90 fs/namei.c:4056 > [] do_syscall_x64 arch/x86/entry/common.c:50 [inline] > [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > [] entry_SYSCALL_64_after_hwframe+0x63/0xcd > > BUG: memory leak > unreferenced object 0xffff888114339e00 (size 128): > comm "syz-executor.0", pid 3673, jiffies 4295017005 (age 12.610s) > hex dump (first 32 bytes): > 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [] mempool_alloc+0x73/0x230 mm/mempool.c:392 > [] alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] > [] __get_metapage+0x38a/0x9b0 fs/jfs/jfs_metapage.c:651 > [] diNewExt+0x3f2/0x9d0 fs/jfs/jfs_imap.c:2265 > [] diAllocExt fs/jfs/jfs_imap.c:1945 [inline] > [] diAllocAG+0x9a4/0xd50 fs/jfs/jfs_imap.c:1662 > [] diAlloc+0x31f/0x900 fs/jfs/jfs_imap.c:1583 > [] ialloc+0x6a/0x3a0 fs/jfs/jfs_inode.c:56 > [] jfs_mkdir+0xf7/0x480 fs/jfs/namei.c:225 > [] vfs_mkdir+0x223/0x340 fs/namei.c:4013 > [] do_mkdirat+0x1a5/0x1e0 fs/namei.c:4038 > [] __do_sys_mkdir fs/namei.c:4058 [inline] > [] __se_sys_mkdir fs/namei.c:4056 [inline] > [] __x64_sys_mkdir+0x69/0x90 fs/namei.c:4056 > [] do_syscall_x64 arch/x86/entry/common.c:50 [inline] > [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > [] entry_SYSCALL_64_after_hwframe+0x63/0xcd > > BUG: memory leak > unreferenced object 0xffff888114339d80 (size 128): > comm "syz-executor.0", pid 3673, jiffies 4295017005 (age 12.610s) > hex dump (first 32 bytes): > 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [] mempool_alloc+0x73/0x230 mm/mempool.c:392 > [] alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] > [] __get_metapage+0x38a/0x9b0 fs/jfs/jfs_metapage.c:651 > [] diNewExt+0x3f2/0x9d0 fs/jfs/jfs_imap.c:2265 > [] diAllocExt fs/jfs/jfs_imap.c:1945 [inline] > [] diAllocAG+0x9a4/0xd50 fs/jfs/jfs_imap.c:1662 > [] diAlloc+0x31f/0x900 fs/jfs/jfs_imap.c:1583 > [] ialloc+0x6a/0x3a0 fs/jfs/jfs_inode.c:56 > [] jfs_mkdir+0xf7/0x480 fs/jfs/namei.c:225 > [] vfs_mkdir+0x223/0x340 fs/namei.c:4013 > [] do_mkdirat+0x1a5/0x1e0 fs/namei.c:4038 > [] __do_sys_mkdir fs/namei.c:4058 [inline] > [] __se_sys_mkdir fs/namei.c:4056 [inline] > [] __x64_sys_mkdir+0x69/0x90 fs/namei.c:4056 > [] do_syscall_x64 arch/x86/entry/common.c:50 [inline] > [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > [] entry_SYSCALL_64_after_hwframe+0x63/0xcd > > BUG: memory leak > unreferenced object 0xffff8881142f0300 (size 128): > comm "syz-executor.0", pid 3676, jiffies 4295017533 (age 7.330s) > hex dump (first 32 bytes): > 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [] mempool_alloc+0x73/0x230 mm/mempool.c:392 > [] alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] > [] __get_metapage+0x38a/0x9b0 fs/jfs/jfs_metapage.c:651 > [] diNewExt+0x3f2/0x9d0 fs/jfs/jfs_imap.c:2265 > [] diAllocExt fs/jfs/jfs_imap.c:1945 [inline] > [] diAllocAG+0x9a4/0xd50 fs/jfs/jfs_imap.c:1662 > [] diAlloc+0x31f/0x900 fs/jfs/jfs_imap.c:1583 > [] ialloc+0x6a/0x3a0 fs/jfs/jfs_inode.c:56 > [] jfs_mkdir+0xf7/0x480 fs/jfs/namei.c:225 > [] vfs_mkdir+0x223/0x340 fs/namei.c:4013 > [] do_mkdirat+0x1a5/0x1e0 fs/namei.c:4038 > [] __do_sys_mkdir fs/namei.c:4058 [inline] > [] __se_sys_mkdir fs/namei.c:4056 [inline] > [] __x64_sys_mkdir+0x69/0x90 fs/namei.c:4056 > [] do_syscall_x64 arch/x86/entry/common.c:50 [inline] > [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > [] entry_SYSCALL_64_after_hwframe+0x63/0xcd > > > > --- > This report 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 issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/0000000000008a5a2e05ea318aa9%40google.com.