nginx-0.8.53 segfault

[Alex Hunsaker]

On Thu, Jan 13, 2011 at 12:16, Maxim C. <lists at ruby-forum.com> wrote:

> Cannot access memory at address 0xb1496648
> Cannot access memory at address 0xb1496648
> Cannot access memory at address 0xb1496648
[...]
> #0  0x08093c37 in ?? ()
> (gdb) bt
> #0  0x08093c37 in ?? ()
> Cannot access memory at address 0xbbc4732c
> (gdb)
>
> Linux kernel i'm using has chpax and grsec patches, if it helps.

IIRC under PaX you need to chpax/paxctl -m /usr/sbin/nginx  (turn off
mprotect restrictions) to let gdb get a stacktrace.  If that does not
work you might need -r or -x or just disable everything: -pemrxs.