report_size_overflow in grsecurity-3.0-3.2.54-201401051649

[jorgus]

Hi,

Is this of any interest to the PAX Team? Although grsecurity patch was not bleeding edge on this machine I'm afraid. It has been a one-off for about 5+ weeks of uptime and only on one machine out of several. It's not a common sighting then.

Pid: 19298, comm: postgres Not tainted 3.2.54-1-amd64 #1
Call Trace:
[<ffffffff810e3104>] ? report_size_overflow+0x24/0x30
[<ffffffff81344151>] ? __ip_select_ident+0x1d1/0x1e0
[<ffffffff8134c6a1>] ? __ip_make_skb+0x1f1/0x470
[<ffffffff8134caea>] ? ip_make_skb+0x12a/0x150
[<ffffffff8134a420>] ? __ip_append_data.isra.31+0xba0/0xba0
[<ffffffff81372897>] ? udp_sendmsg+0x2a7/0x970
[<ffffffff8134c92e>] ? ip_send_skb+0xe/0x40
[<ffffffff812f8423>] ? sock_sendmsg+0xc3/0xf0
[<ffffffff812f8423>] ? sock_sendmsg+0xc3/0xf0
[<ffffffff812f84c2>] ? sockfd_lookup_light+0x22/0x80
[<ffffffff812f84c2>] ? sockfd_lookup_light+0x22/0x80
[<ffffffff812fbdf3>] ? sys_sendto+0x113/0x180
[<ffffffff812fbdf3>] ? sys_sendto+0x113/0x180
[<ffffffff8139e08f>] ? system_call_fastpath+0x16/0x1b
[<ffffffff8139e0b7>] ? sysret_check+0x1e/0x65

[ephox]

Could you please send me your kernel .config, the entire dmesg (the message about the function and line number is missing) and the result (net/ipv4/route.*) of the make net/ipv4/route.o EXTRA_CFLAGS=-fdump-tree-all command?

[jorgus]

Sorry, I was not notified by email about your post (forgot to subscribe...). I have already upgraded to 3.2.55 and old sources have been purged from my package builder. I'll let you know if I encounter this problem in 3.2.55.