Map server crashed -- related to @Channels

Hey guys me again!

We've solved the issue we had with our player count - however recently another issue has been arising with @channels.

Here's the log:

#1  0x0000000000422ebd in atcommand_channel (fd=1293, sd=0xba41e20, 
    command=<optimized out>, message=<optimized out>, info=<optimized out>)
    at atcommand.c:9130
        channel = <optimized out>
        subcmd = "leave\000\000\000\247\036=u\032+\000\000\000\000\000"
        sub1 = "#party\000\000@t X\377\177\000\000\000\000\000"
        sub2 = "\000v X\377\177\000\000pu X\377\177\000\000Xy X"
        sub3 = '\000' <repeats 16 times>, "x\325", <incomplete sequence \337>
        k = 0 '\000'
        FUNCTION = "atcommand_channel"
#2  0x00000000004273ab in atcommand_exec (fd=1293, sd=0xba41e20, 
    message=0x2b1a8d3c584b "@channel leave #party", 
    player_invoked=<optimized out>) at atcommand.c:10201
        charname = '\000' <repeats 23 times>
        params = "leave #party", '\000' <repeats 87 times>
        charname2 = '\000' <repeats 23 times>
        params2 = '\000' <repeats 40 times>, "'\000\000\000\036\000\000\000\001", '\000' <repeats 23 times>, "hw X\377\177\000\000Xv X\377\177\000\000\061\001\000\000\001\000\000\000\000\000\000"
        command = "@channel", '\000' <repeats 91 times>
        output = '\000' <repeats 24 times>, "\001\000\000\000\000\000\000\000xw X\377\177\000\000\070\305K\000\000\000\000\000@\336F\000\000\000\000\000\377\377\377\177", '\000' <repeats 12 times>, "\060\000\000\000\060\000\000\000\310x X\377\177\000\000\340w X\377\177\000\000\000\000\000\000\000\000\000\000\310w X\377\177\000\000@\336F", '\000' <repeats 13 times>, "\003\000\000\000\000\000\000\000@ҙ\000\000\000\000\000\020\340\257\017\000\000\000\000DUL", '\000' <repeats 29 times>, "\060\000\000\000\060\000\000\000\250x X\377\177\000\000\340"...
        atcmd_msg = "@channel leave #party\000\000\000\340w X\377\177", '\000' <repeats 186 times>...
        ssd = <optimized out>
        info = 0x2b1a795bb93c
#3  0x0000000000468d10 in clif_parse_GlobalMessage (fd=1293, sd=0xba41e20)
    at clif.c:9918
        text = 0x2b1a8d3c5840 "Skrillex : @channel leave #party"
        textlen = 33
        name = 0x2b1a8d3c5840 "Skrillex : @channel leave #party"
        message = 0x2b1a8d3c584b "@channel leave #party"
        fakename = 0x0
        namelen = 8
        messagelen = 22
        is_fake = <optimized out>
        FUNCTION = "clif_parse_GlobalMessage"
#4  0x000000000045b791 in clif_parse (fd=1293) at clif.c:18782
        parse_cmd_func = <optimized out>
        cmd = <optimized out>
        packet_len = <optimized out>
        sd = 0xba41e20
        pnum = 0
#5  0x00000000005e1475 in do_sockets (next=<optimized out>) at socket.c:885
        rfd = {fds_bits = {2097408, 281474976972800, 0, 0, 0, 0, 0, 0, 0, 
            1024, 0, 4, 67108864, -9223372036854775808, 0, 72057594040025088, 
            4611686018427388032, 0, 0, 0, 72057598332903424, 4947802324992, 
            0 <repeats 104 times>}}
        timeout = {tv_sec = 0, tv_usec = 49792}
        ret = 0
        i = 1293
#6  0x0000000000404479 in main (argc=<optimized out>, argv=<optimized out>)
    at core.c:259
        next = <optimized out>
        retval = 0
(gdb)

This is the 2nd time it's happened in two days. Player counts were both above 1600 at time and I also found this: https://rathena.org/...p-server-crash/ when looking around. We're disabling the command from players for now. Yesterday when it crashed the log we received was:

http://pastebin.com/KZSGNxqi

So they're pretty similar.

Any thoughts would be much appreciated.

Cheers

Edit:

We've applied a hotfix to it, testing it out now. Will update later.