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@xxxxxxxxxxxxxxxxxxxxxxxxx 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. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. 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
