Re: Segfault at cache read_dir

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Dongmin Yu wrote:
Hello,

To isolate the issue, I created a simple test case.

I’m using CentOS 64bit. The configuration was not the issue.

This test works fine with 2.0.7 but does endless loop with 2.0.8 client.

Thats a good lead. I'll check it out.

Thanks
-Shehjar


Thanks

*DongMin Yu*

HOSTWAY IDC Corp. / R&D Principal Researcher

TEL. +822 2105 6037

FAX. +822 2105 6019

CELL. +8216 2086 1357

EMAIL: min.yu@xxxxxxxxxxxxxxx <mailto:min.yu@xxxxxxxxxxxxxxx>

Website: http://www.hostway.com

*NOTICE: This email and any file transmitted are confidential and/or legally privileged and intended only for the person(s) directly addressed. If you are not the intended recipient, any use, copying, transmission, distribution, or other forms of dissemination is strictly prohibited. If you have received this email in error, please notify the sender immediately and permanently delete the email and files, if any.*

*From:* gluster-devel-bounces+min=hostway.co.kr@xxxxxxxxxx [mailto:gluster-devel-bounces+min=hostway.co.kr@xxxxxxxxxx] *On Behalf Of *Dongmin Yu
*Sent:* Tuesday, November 24, 2009 8:01 PM
*To:* gluster-devel@xxxxxxxxxx
*Subject:* Segfault at cache read_dir

Hello

I’m using GlusterFS-2.0.8 and I turn on readahead. I got a Segfault when I try to read a directory.

At the following trace, fd_ctx->dcache seems to be NULL

volume readahead

  type performance/read-ahead

  option page-count 4           # 2 is default option

  option force-atime-update off # default is off

  subvolumes distribute

end-volume

Program received signal SIGSEGV, Segmentation fault.

0x00002aaab4b03606 in libgf_dcache_readdir (ctx=<value optimized out>,

    fd=<value optimized out>, dirp=0x2aaab31cd7f8, offset=0x4f9d2248)

    at libglusterfsclient.c:398

398             *offset = fd_ctx->dcache->next->d_off;

(gdb) bt

#0  0x00002aaab4b03606 in libgf_dcache_readdir (ctx=<value optimized out>,

    fd=<value optimized out>, dirp=0x2aaab31cd7f8, offset=0x4f9d2248)

    at libglusterfsclient.c:398

#1  0x00002aaab4b100d9 in libgf_client_readdir (ctx=0x2aaab31cd80b,

    fd=0x2aaab48e0928, dirp=0x0, offset=0x0) at libglusterfsclient.c:4151

#2  0x00002aaab4b1047f in glusterfs_readdir (dirfd=0x2aaab319b310)

    at libglusterfsclient.c:4253

#3  0x00002aaab48e7e38 in gluster_readdir (self=<value optimized out>,

    args=0x2aaab4824840) at glusterfs.c:1035

(gdb) p  fd_ctx->dcache->next->d_off

Cannot access memory at address 0xb8

(gdb) p  fd_ctx

$1 = (libglusterfs_client_fd_ctx_t *) 0x2aaab31cd7c0

(gdb) p  fd_ctx->dcache

$2 = (struct direntcache *) 0x0

*DongMin Yu*

HOSTWAY IDC Corp. / R&D Principal Researcher

TEL. +822 2105 6037

FAX. +822 2105 6019

CELL. +8216 2086 1357

EMAIL: min.yu@xxxxxxxxxxxxxxx <mailto:min.yu@xxxxxxxxxxxxxxx>

Website: http://www.hostway.com

*NOTICE: This email and any file transmitted are confidential and/or legally privileged and intended only for the person(s) directly addressed. If you are not the intended recipient, any use, copying, transmission, distribution, or other forms of dissemination is strictly prohibited. If you have received this email in error, please notify the sender immediately and permanently delete the email and files, if any.*


------------------------------------------------------------------------

_______________________________________________
Gluster-devel mailing list
Gluster-devel@xxxxxxxxxx
http://lists.nongnu.org/mailman/listinfo/gluster-devel





[Index of Archives]     [Gluster Users]     [Ceph Users]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux