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May 24 14:55:26 dev-3 kernel: [264002.592197] beam[8449]: segfault at 0 ip 0000000000437e10 sp 00007fffce250948 error 4 in beam[400000+174000]

sunny     4796  0.9  1.8 134320 76444 ?        Sl   10:58   0:00 /usr/lib/erlang/erts-5.7.2/bin/beam -A 256 -P 250000 -- -root /usr/lib/erlang -progname erl -- -home /home/sunny -noshell -noinput -noshell -noinput -master [hidden email] -name [hidden email] -s slave slave_start [hidden email] slave_waiter_2 -rsh ssh -noshell -noinput -setcookie tsung -smp disable

sunny@dev-3:~$ uname -a
Linux dev-3 2.6.31-14-server #48-Ubuntu SMP Fri Oct 16 15:07:34 UTC 2009 x86_64 GNU/Linux

sunny@dev-3:~$ dmesg | grep CPU
[    0.000000] SMP: Allowing 32 CPUs, 24 hotplug CPUs
[    0.000000] NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:32 nr_node_ids:2
[    0.000000] PERCPU: Remapped at ffffc90000000000 with large pages, static data 90720 bytes
[    0.000000] Initializing CPU#0
[    0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=32, Nodes=2
[    0.023346] CPU: Physical Processor ID: 1
[    0.023347] CPU: Processor Core ID: 0
[    0.023351] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.023353] CPU: L2 cache: 256K
[    0.023355] CPU: L3 cache: 4096K
[    0.023358] CPU 0/0x10 -> Node 0
[    0.023361] mce: CPU supports 9 MCE banks
[    0.023373] CPU0: Thermal monitoring enabled (TM1)
[    0.023377] CPU 0 MCA banks CMCI:2 CMCI:3 CMCI:5 CMCI:6 CMCI:8
[    0.131977] CPU0: Intel(R) Xeon(R) CPU           E5504  @ 2.00GHz stepping 05

Program received signal SIGSEGV, Segmentation fault.
unlink_free_block (allctr=0x7ad480, block=0x0) at beam/erl_goodfit_alloc.c:453
453        Uint sz = BLK_SZ(blk);
(gdb) whe
#0  unlink_free_block (allctr=0x7ad480, block=0x0) at beam/erl_goodfit_alloc.c:453
#1  0x0000000000437fd6 in get_free_block (allctr=0x7ad480, size=<value optimized out>, cand_blk=0x0, cand_size=0)
    at beam/erl_goodfit_alloc.c:421
#2  0x00000000004322c6 in mbc_alloc_block (allctr=0x7ad480, size=72) at beam/erl_alloc_util.c:631
#3  mbc_alloc (allctr=0x7ad480, size=72) at beam/erl_alloc_util.c:758
#4  0x00000000004b1697 in erts_alloc () at beam/erl_alloc.h:179
#5  exit_async () at beam/erl_async.c:132
#6  0x000000000043c13d in system_cleanup (exit_code=<value optimized out>) at beam/erl_init.c:1306
#7  0x000000000043c443 in erl_exit (n=0, fmt=0x54649c "") at beam/erl_init.c:1380
#8  0x000000000045d042 in halt_0 (A__p=<value optimized out>) at beam/bif.c:3319
#9  0x00000000004d081f in process_main () at beam/beam_emu.c:2008
#10 0x000000000043d56c in erl_start (argc=34, argv=<value optimized out>) at beam/erl_init.c:1233
#11 0x00000000004269b9 in main (argc=8049792, argv=0x0) at sys/unix/erl_main.c:29
(gdb) f 1
#1  0x0000000000437fd6 in get_free_block (allctr=0x7ad480, size=<value optimized out>, cand_blk=0x0, cand_size=0)
    at beam/erl_goodfit_alloc.c:421
421        unlink_free_block(allctr, blk);
(gdb) l 421
416        /* We are guaranteed to find a block that fits in this bucket */
417        blk = search_bucket(allctr, min_bi, size);
418        ASSERT(blk);
419        if (cand_blk && cand_size <= BLK_SZ(blk))
420        return NULL; /* cand_blk was better */
421        unlink_free_block(allctr, blk);
422        return blk;
423    }
424   
425   
(gdb)

(gdb) p allctr
$1 = (Allctr_t *) 0x7ad480
(gdb) p min_bi
$2 = <value optimized out>
(gdb) p size
$3 = <value optimized out>
(gdb) p *allctr
$4 = {name_prefix = 0x534227 "sl_", alloc_no = 3, name = {alloc = 0, realloc = 0, free = 0},
  vsn_str = 0x53602f "2.1", t = 0, ramv = 0, sbc_threshold = 524288, sbc_move_threshold = 80,
  mbc_move_threshold = 50, main_carrier_size = 131072, max_mseg_sbcs = 256, max_mseg_mbcs = 5,
  largest_mbc_size = 10485760, smallest_mbc_size = 1048576, mbc_growth_stages = 10, mseg_opt = {cache = 1,
    preserv = 1, abs_shrink_th = 4145152, rel_shrink_th = 80}, mbc_header_size = 32, sbc_header_size = 32,
  min_mbc_size = 16384, min_mbc_first_free_size = 4096, min_block_size = 32, mbc_list = {first = 0x7f4f93a5d010,
    last = 0x7f4f93a5d010}, sbc_list = {first = 0x0, last = 0x0}, main_carrier = 0x7f4f93a5d010,
  get_free_block = 0x437f40 <get_free_block>, link_free_block = 0x437d00 <link_free_block>,
  unlink_free_block = 0x437e10 <unlink_free_block>, info_options = 0x438480 <info_options>,
  get_next_mbc_size = 0x430e40 <get_next_mbc_size>, creating_mbc = 0x438100 <update_last_aux_mbc>,
  destroying_mbc = 0x438100 <update_last_aux_mbc>, init_atoms = 0x4385c0 <init_atoms>, mutex = {mtx = {pt_mtx = {
        __data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, __spins = 0, __list = {
            __prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 39 times>, __align = 0}, is_rec_mtx = 0,
      prev = 0x0, next = 0x0}}, thread_safe = 0, ts_list = {prev = 0x0, next = 0x0}, atoms_initialized = 0,
  stopped = 0, calls = {this_alloc = {giga_no = 0, no = 2460}, this_free = {giga_no = 0, no = 2458},
    this_realloc = {giga_no = 0, no = 0}, mseg_alloc = {giga_no = 0, no = 0}, mseg_dealloc = {giga_no = 0, no = 0},
    mseg_realloc = {giga_no = 0, no = 0}, sys_alloc = {giga_no = 0, no = 1}, sys_free = {giga_no = 0, no = 0},
    sys_realloc = {giga_no = 0, no = 0}}, sbcs = {curr_mseg = {no = 0, size = 0}, curr_sys_alloc = {no = 0,
      size = 0}, max = {no = 0, size = 0}, max_ever = {no = 0, size = 0}, blocks = {curr = {no = 0, size = 0},
      max = {no = 0, size = 0}, max_ever = {no = 0, size = 0}}}, mbcs = {curr_mseg = {no = 0, size = 0},
    curr_sys_alloc = {no = 1, size = 131112}, max = {no = 1, size = 131112}, max_ever = {no = 0, size = 0},
    blocks = {curr = {no = 4, size = 384}, max = {no = 144, size = 13848}, max_ever = {no = 0, size = 0}}}}
(gdb)

http://erlang.2086793.n4.nabble.com/beam-8449-segfault-at-0-ip-0000000000437e10-sp-00007fffce250948-error-4-in-beam-400000-174000-td2228295.html#a2244144