From: syzbot <syzbot+c99868fde67014f7e9f5@syzkaller.appspotmail.com>
To: coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de,
kadlec@netfilter.org, kuba@kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
netfilter-devel@vger.kernel.org, pablo@netfilter.org,
syzkaller-bugs@googlegroups.com
Subject: memory leak in nf_tables_addchain
Date: Tue, 11 Aug 2020 10:07:14 -0700 [thread overview]
Message-ID: <00000000000044d3c705ac9d1a39@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 449dc8c9 Merge tag 'for-v5.9' of git://git.kernel.org/pub/..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14f87006900000
kernel config: https://syzkaller.appspot.com/x/.config?x=4810fa4a53b3aa2c
dashboard link: https://syzkaller.appspot.com/bug?extid=c99868fde67014f7e9f5
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17fbf6e6900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12781652900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c99868fde67014f7e9f5@syzkaller.appspotmail.com
executing program
BUG: memory leak
unreferenced object 0xffff888119189f80 (size 128):
comm "syz-executor071", pid 6469, jiffies 4294944001 (age 12.440s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
90 9f 18 19 81 88 ff ff 90 9f 18 19 81 88 ff ff ................
backtrace:
[<0000000004286457>] kmalloc include/linux/slab.h:554 [inline]
[<0000000004286457>] kzalloc include/linux/slab.h:666 [inline]
[<0000000004286457>] nf_tables_addchain.constprop.0+0x414/0x720 net/netfilter/nf_tables_api.c:2006
[<0000000064582dc8>] nf_tables_newchain+0x74c/0x9d0 net/netfilter/nf_tables_api.c:2316
[<000000009af54f85>] nfnetlink_rcv_batch+0x2fb/0x9e0 net/netfilter/nfnetlink.c:434
[<000000000edcf8ff>] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:544 [inline]
[<000000000edcf8ff>] nfnetlink_rcv+0x182/0x1b0 net/netfilter/nfnetlink.c:562
[<00000000d8cb87ba>] netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
[<00000000d8cb87ba>] netlink_unicast+0x2b6/0x3c0 net/netlink/af_netlink.c:1330
[<00000000e133d3d8>] netlink_sendmsg+0x2ba/0x570 net/netlink/af_netlink.c:1919
[<000000003f4dae42>] sock_sendmsg_nosec net/socket.c:651 [inline]
[<000000003f4dae42>] sock_sendmsg+0x4c/0x60 net/socket.c:671
[<00000000a38aa29c>] ____sys_sendmsg+0x2c4/0x2f0 net/socket.c:2359
[<00000000a06b2c98>] ___sys_sendmsg+0x81/0xc0 net/socket.c:2413
[<00000000b3d1da45>] __sys_sendmsg+0x77/0xe0 net/socket.c:2446
[<00000000e1124972>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
[<00000000f18a8a31>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot can test patches for this issue, for details see:
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reply other threads:[~2020-08-11 17:07 UTC|newest]
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