Hope I got it right:
(gdb) bt full
#0 0xa772a623 in G_ClientEndRound (player=0x1b06f89c, quiet=qfalse)
at src/game/g_round.c:215
p = (player_t *) 0x1
i = 479138748
#1 0x0816cdc4 in SV_ExecuteClientMessage (cl=0x1bee77ac, cmd=2,
msg=0x1d3b10ec) at src/server/sv_user.c:351
s = 0x20ffd00 <Address 0x20ffd00 out of bounds>
#2 0x08167fb0 in SV_ReadPacket (s=0x1b5c1dbc) at src/server/sv_main.c:449
cmd = 2
cl = (client_t *) 0x1bee77ac
msg = (struct dbuffer *) 0x1d3b10ec
#3 0x08151663 in NET_Wait (timeout=0) at src/common/net.c:457
s = (struct net_stream *) 0x1b5c1dbc
tv = {tv_sec = 0, tv_usec = 0}
ready = 0
i = 0
read_fds_out = {fds_bits = {0 <repeats 32 times>}}
write_fds_out = {fds_bits = {0 <repeats 32 times>}}
#4 0x081466e5 in Qcommon_Frame () at src/common/common.c:1155
s = 0x0
time_to_next = 0
event = (struct event *) 0x1d3b10ec
#5 0x08197719 in main (argc=7, argv=0xbfec1484)
at src/ports/linux/linux_main.c:53
No locals.