Sorry for the long response time.
Here is the requested output:
Program received signal SIGBUS, Bus error.
0x00056fc0 in bgp_get_prefix (path_id=0, net=0xb6f0709c, c=0xb6ee9bc0)
at proto/bgp/attrs.c:1710
1710 proto/bgp/attrs.c: No such file or directory.
(gdb) p sizeof(struct mblock)
$1 = 16
(gdb) p px
$2 = (struct bgp_prefix *) 0xb6eac01c
(gdb) p (uintptr_t)px % 4
$3 = 0
(gdb) p (uintptr_t)px % 8
$4 = 4
On 12/6/24 3:16 AM, Ondrej Zajicek wrote:
On Thu, Dec 05, 2024 at 11:35:13PM +0100, nick via Bird-users wrote:
Dear BIRD Community,
I am writing to report a bug observed in the BGP implementation on ARMv7
platforms, which results in a SIGBUS error due to unaligned memory access in
the NEON assembler code. I debugged this issue on version 2.15.1 of BIRD.
The root cause appears to be insufficient alignment of memory allocated for
structures, specifically in this line:
```c
px = mb_alloc(c->pool, sizeof(struct bgp_prefix) + net->length);
```
Hello
Thanks for the report, can you get from your crash the pointer / aligment of
'px' and also get sizeof(struct mblock) in your build?
