memory leak in ctnetlink_del

Title	Replies (including bot)	Last reply
[PATCH 0/4] Netfilter fixes for net	6 (6)	2020/06/15 20:27
[PATCH nf] netfilter: ctnetlink: memleak in filter initialization error path	2 (2)	2020/06/11 08:46
memory leak in ctnetlink_del_conntrack	0 (1)	2020/06/09 21:58

executing program executing program executing program BUG: memory leak unreferenced object 0xffff88811c505300 (size 128): comm "syz-executor470", pid 6431, jiffies 4294945909 (age 13.210s) hex dump (first 32 bytes): 00 00 00 00 02 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: [<00000000da2809df>] kmalloc include/linux/slab.h:555 [inline] [<00000000da2809df>] kzalloc include/linux/slab.h:669 [inline] [<00000000da2809df>] ctnetlink_alloc_filter+0x3a/0x2a0 net/netfilter/nf_conntrack_netlink.c:924 [<00000000745f0fc9>] ctnetlink_flush_conntrack net/netfilter/nf_conntrack_netlink.c:1516 [inline] [<00000000745f0fc9>] ctnetlink_del_conntrack+0x20a/0x326 net/netfilter/nf_conntrack_netlink.c:1554 [<00000000385a38da>] nfnetlink_rcv_msg+0x32f/0x370 net/netfilter/nfnetlink.c:229 [<00000000bb3b1fc1>] netlink_rcv_skb+0x5a/0x180 net/netlink/af_netlink.c:2469 [<00000000b2799dbb>] nfnetlink_rcv+0x83/0x1b0 net/netfilter/nfnetlink.c:563 [<000000006021f56a>] netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] [<000000006021f56a>] netlink_unicast+0x20a/0x2f0 net/netlink/af_netlink.c:1329 [<000000003a4cd173>] netlink_sendmsg+0x2b5/0x560 net/netlink/af_netlink.c:1918 [<00000000ff287393>] sock_sendmsg_nosec net/socket.c:652 [inline] [<00000000ff287393>] sock_sendmsg+0x4c/0x60 net/socket.c:672 [<000000008c32b330>] ____sys_sendmsg+0x2c4/0x2f0 net/socket.c:2352 [<00000000a8f57b1b>] ___sys_sendmsg+0x8a/0xd0 net/socket.c:2406 [<000000002c938bcf>] __sys_sendmsg+0x77/0xe0 net/socket.c:2439 [<00000000878f0bd0>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:295 [<00000000dcd0e014>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88811ac32a00 (size 128): comm "syz-executor470", pid 6432, jiffies 4294946459 (age 7.710s) hex dump (first 32 bytes): 00 00 00 00 02 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: [<00000000da2809df>] kmalloc include/linux/slab.h:555 [inline] [<00000000da2809df>] kzalloc include/linux/slab.h:669 [inline] [<00000000da2809df>] ctnetlink_alloc_filter+0x3a/0x2a0 net/netfilter/nf_conntrack_netlink.c:924 [<00000000745f0fc9>] ctnetlink_flush_conntrack net/netfilter/nf_conntrack_netlink.c:1516 [inline] [<00000000745f0fc9>] ctnetlink_del_conntrack+0x20a/0x326 net/netfilter/nf_conntrack_netlink.c:1554 [<00000000385a38da>] nfnetlink_rcv_msg+0x32f/0x370 net/netfilter/nfnetlink.c:229 [<00000000bb3b1fc1>] netlink_rcv_skb+0x5a/0x180 net/netlink/af_netlink.c:2469 [<00000000b2799dbb>] nfnetlink_rcv+0x83/0x1b0 net/netfilter/nfnetlink.c:563 [<000000006021f56a>] netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] [<000000006021f56a>] netlink_unicast+0x20a/0x2f0 net/netlink/af_netlink.c:1329 [<000000003a4cd173>] netlink_sendmsg+0x2b5/0x560 net/netlink/af_netlink.c:1918 [<00000000ff287393>] sock_sendmsg_nosec net/socket.c:652 [inline] [<00000000ff287393>] sock_sendmsg+0x4c/0x60 net/socket.c:672 [<000000008c32b330>] ____sys_sendmsg+0x2c4/0x2f0 net/socket.c:2352 [<00000000a8f57b1b>] ___sys_sendmsg+0x8a/0xd0 net/socket.c:2406 [<000000002c938bcf>] __sys_sendmsg+0x77/0xe0 net/socket.c:2439 [<00000000878f0bd0>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:295 [<00000000dcd0e014>] entry_SYSCALL_64_after_hwframe+0x44/0xa9