[Gluster-devel] NULL frame->conn cause a crash

[Anand Avati]

You seem to be hitting strange corner cases. I wonder how a netbsd
environment could trigger such corner cases. Valgrind will help a long way.
Also, do you visit IRC? it might help to do more efficient debugging there
than over email.

Avati

On Tue, Jul 5, 2011 at 3:02 PM, Emmanuel Dreyfus <manu at netbsd.org> wrote:

> Let us forget my previous batch of crashes that were with 3.2.1. This
> one iw with today's code from git:
>
> Program terminated with signal 11, Segmentation fault.
> #0  0xba0c41f8 in server_inodelk_cbk (frame=0xbad01660, cookie=0xbaf0708c,
>    this=0xba816000, op_ret=0, op_errno=0) at server3_1-fops.c:251
> 251                             gf_add_locker (conn->ltable, state->volume,
>
> And indeed conn leads to a SIGSEGV as it is NUL.
> (gdb) print *((server_state_t *)frame->root->state)
> $7 = {conn = 0x0, xprt = 0x0, itable = 0xbb96f080,
>  resume_fn = 0xba0c42d4 <server_inodelk_resume>, loc = {
>    path = 0xb98fa330
> "/netbsd/usr/src/common/dist/zlib/contrib/dotzlib/CVS/Root.02151a", name =
> 0xb98fa365 "Root.02151a", inode = 0x0, parent = 0x0,
>    gfid = '\0' <repeats 15 times>, pargfid = '\0' <repeats 15 times>,
>    ino = 0}, loc2 = {path = 0x0, name = 0x0, inode = 0x0, parent = 0x0,
>    gfid = '\0' <repeats 15 times>, pargfid = '\0' <repeats 15 times>,
>    ino = 0}, resolve = {type = RESOLVE_EXACT, fd_no = 18446744073709551615,
>    ino = 0, gen = 0, par = 0, gfid = "rð\033òX\207Kí¨§\2304ÆWý_",
>
>
> I saved the core if someone wants more details
>
> --
> Emmanuel Dreyfus
> manu at netbsd.org
>
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