[Gluster-devel] in dict.c, this gets replace by environment

[Anand Avati]

Can you post a bt full?

Thanks


On Wed, Aug 13, 2014 at 9:35 PM, Emmanuel Dreyfus <manu at netbsd.org> wrote:

> Just in case someone has an idea why this happens: From time to time on
> NetBSD, gluster randomly crashes because "this" gets replaced by process
> environment. Here is an example:
>
> #3  0xbb75afb2 in dict_get (this=0xbb140628,
>     key=0xbb23669a "transport.address-family") at dict.c:380
> (gdb) list
> 375             if (!this || !key) {
> 376                     gf_log_callingfn ("dict", GF_LOG_INFO,
> 377                                       "!this || key=%s", (key) ? key :
> "()");
> 378                     return NULL;
> 379             }
> 380     if (this->hash_size < 0) abort();
> 381
> 382             LOCK (&this->lock);
> 383
> 384             pair = _dict_lookup (this, key);
>
> Note I added the if (this->hash_size < 0) abort(); to catch the problem
> early.
> "this" is completely corrupted:
>
> (gdb) print *this
> $2 = {is_static = 1 '\001', hash_size = -1082130687, count = -1082130674,
>   refcount = -1082130649, members = 0xbf7fff2e, members_list = 0xbf7fff39,
>   extra_free = 0xbf7fff41 "HARNESS_VERSION=3.26",
>   extra_stdfree = 0xbf7fff56 "SU_FROM=root", lock = {pts_magic =
> 3212836707,
>     pts_spin = 112 'p', pts_flags = -1082130523},
>   members_internal = 0xbf7fffb6, free_pair = {hash_next = 0xbb185411,
>     prev = 0x0, next = 0x0, value = 0x0, key = 0x0},
>   free_pair_in_use = _gf_false}
>
> Hex output give a better hint at the problem:
>
> (gdb) x/10wx this
> 0xbb140628:     0xbf7ffeed      0xbf7fff01      0xbf7fff0e      0xbf7fff27
> 0xbb140638:     0xbf7fff2e      0xbf7fff39      0xbf7fff41      0xbf7fff56
> 0xbb140648:     0xbf7fff63      0xbf7fff70
> (gdb) x/1s 0xbf7ffeed
> 0xbf7ffeed:      "MAIL=/var/mail/root"
> (gdb) x/1s 0xbf7fff01
> 0xbf7fff01:      "BLOCKSIZE=1k"
> (gdb) x/1s 0xbf7fff0e
> 0xbf7fff0e:      "PWD=/autobuild/glusterfs"
>
>
> Oddly, rebooting the machine fixes the problem.
>
> --
> Emmanuel Dreyfus
> http://hcpnet.free.fr/pubz
> manu at netbsd.org
> _______________________________________________
> Gluster-devel mailing list
> Gluster-devel at gluster.org
> http://supercolony.gluster.org/mailman/listinfo/gluster-devel
>
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