Re: xfs_repair segfault

[Rui Gomes <rgomes@rvx.is>]

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Hello Carsten,

Thank you for the quick reply, we tried many different combinations, without the -m flag the result is the same.
New gdb dump in the attachment replacing the -m with -v

Regards 

------------------------------- 
Rui Gomes 
CTO 


RVX - Reykjavik Visual Effects 
Seljavegur 2, 
101 Reykjavik 
Iceland 


Tel: + 354 527 3330 
Mob: + 354 663 3360

----- Original Message -----
From: "Carsten Aulbert" <Carsten.Aulbert@aei.mpg.de>
To: "Rui Gomes" <rgomes@rvx.is>, "xfs" <xfs@oss.sgi.com>
Cc: "omar" <omar@rvx.is>
Sent: Monday, 9 March, 2015 15:55:00
Subject: xfs_repair segfault

Hi Rui

On 03/09/2015 04:50 PM, Rui Gomes wrote:
> Full output and GDB Backtrace in the attachment, do you guys have any
> advice how can we get xfs_repair to do a clean run?
> 

At the very least (though I'm not sure if that will already fix it) I
think you need to change the -m flag:


/usr/sbin/xfs_repair -n -P -m 500000000000000 /dev/sdb1

according to man page:

 -m maxmem
              Specifies the approximate maximum amount of memory, in
megabytes, to use for xfs_repair.  xfs_repair has its own internal block
cache  which  will  scale
              out up to the lesser of the process's virtual address
limit or about 75% of the system's physical RAM.  This option overrides
these limits.

              NOTE: These memory limits are only approximate and may use
more than the specified limit.

and I doubt your machine has that much memory, possibly just drop it for
now.

Cheers

Carsten

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Starting program: /usr/sbin/xfs_repair -n -P -v /dev/sdb1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffef950700 (LWP 16520)]
[New Thread 0x7fffef14f700 (LWP 16521)]
[New Thread 0x7fffee94e700 (LWP 16522)]
[New Thread 0x7fffee14d700 (LWP 16523)]
[New Thread 0x7fffed94c700 (LWP 16524)]
[New Thread 0x7fffed14b700 (LWP 16525)]
[New Thread 0x7fffec94a700 (LWP 16526)]
[New Thread 0x7fffec149700 (LWP 16527)]
[New Thread 0x7fffeb948700 (LWP 16528)]
[New Thread 0x7fffeb147700 (LWP 16529)]
[New Thread 0x7fffea946700 (LWP 16530)]
[New Thread 0x7fffea145700 (LWP 16531)]
[New Thread 0x7fffe9944700 (LWP 16532)]
[New Thread 0x7fffe9143700 (LWP 16533)]
[New Thread 0x7fffe8942700 (LWP 16534)]
[New Thread 0x7fffe8141700 (LWP 16535)]
[New Thread 0x7fffe7940700 (LWP 16536)]
[New Thread 0x7fffe713f700 (LWP 16537)]
[New Thread 0x7fffe693e700 (LWP 16538)]
[New Thread 0x7fffe613d700 (LWP 16539)]
[New Thread 0x7fffe593c700 (LWP 16540)]
[New Thread 0x7fffe513b700 (LWP 16541)]
[New Thread 0x7fffe493a700 (LWP 16542)]
[New Thread 0x7fffe4139700 (LWP 16543)]
[New Thread 0x7fffe3938700 (LWP 16544)]
[New Thread 0x7fffe3137700 (LWP 16545)]
[New Thread 0x7fffe2936700 (LWP 16546)]
[New Thread 0x7fffe2135700 (LWP 16547)]
[New Thread 0x7fffe1934700 (LWP 16548)]
[New Thread 0x7fffe1133700 (LWP 16549)]
[New Thread 0x7fffe0932700 (LWP 16550)]
[New Thread 0x7fffe0131700 (LWP 16551)]
[Thread 0x7fffec149700 (LWP 16527) exited]
[Thread 0x7fffe613d700 (LWP 16539) exited]
[Thread 0x7fffe8942700 (LWP 16534) exited]
[Thread 0x7fffe3938700 (LWP 16544) exited]
[Thread 0x7fffe8141700 (LWP 16535) exited]
[Thread 0x7fffe9944700 (LWP 16532) exited]
[Thread 0x7fffe0932700 (LWP 16550) exited]
[Thread 0x7fffe593c700 (LWP 16540) exited]
[Thread 0x7fffea946700 (LWP 16530) exited]
[Thread 0x7fffe3137700 (LWP 16545) exited]
[Thread 0x7fffe693e700 (LWP 16538) exited]
[Thread 0x7fffea145700 (LWP 16531) exited]
[Thread 0x7fffe7940700 (LWP 16536) exited]
[Thread 0x7fffeb147700 (LWP 16529) exited]
[Thread 0x7fffe493a700 (LWP 16542) exited]
[Thread 0x7fffeb948700 (LWP 16528) exited]
[Thread 0x7fffed94c700 (LWP 16524) exited]
[Thread 0x7fffe1934700 (LWP 16548) exited]
[Thread 0x7fffec94a700 (LWP 16526) exited]
[Thread 0x7fffed14b700 (LWP 16525) exited]
[Thread 0x7fffe0131700 (LWP 16551) exited]
[Thread 0x7fffe713f700 (LWP 16537) exited]
[Thread 0x7fffef950700 (LWP 16520) exited]
[Thread 0x7fffee94e700 (LWP 16522) exited]
[Thread 0x7fffe1133700 (LWP 16549) exited]
[Thread 0x7fffe2135700 (LWP 16547) exited]
[Thread 0x7fffe9143700 (LWP 16533) exited]
[Thread 0x7fffe513b700 (LWP 16541) exited]
[Thread 0x7fffef14f700 (LWP 16521) exited]
[Thread 0x7fffee14d700 (LWP 16523) exited]
[Thread 0x7fffe2936700 (LWP 16546) exited]
[Thread 0x7fffe4139700 (LWP 16543) exited]

Program received signal SIGABRT, Aborted.
0x00007ffff74275c9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
#0  0x00007ffff74275c9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007ffff7428cd8 in __GI_abort () at abort.c:90
#2  0x00007ffff7467db7 in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7ffff756f561 "*** %s ***: %s terminated\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:196
#3  0x00007ffff74ff9c7 in __GI___fortify_fail (msg=msg@entry=0x7ffff756f507 "buffer overflow detected") at fortify_fail.c:31
#4  0x00007ffff74fdb90 in __GI___chk_fail () at chk_fail.c:28
#5  0x0000000000414ea8 in memmove (__len=18446744073709551615, __src=0x1e560e94, __dest=0x7fffffffd900) at /usr/include/bits/string3.h:57
#6  process_sf_dir2 (dirname=0x46b0e2 "", repair=<synthetic pointer>, parent=0x7fffffffdc30, dino_dirty=0x7fffffffdc28, ino_discovery=1, dip=0x1e560e00, ino=260256256, mp=0x1e560e91) at dir2.c:992
#7  process_dir2 (mp=mp@entry=0x7fffffffe030, ino=ino@entry=260256256, dip=dip@entry=0x1e560e00, ino_discovery=ino_discovery@entry=1, dino_dirty=dino_dirty@entry=0x7fffffffdc28, dirname=dirname@entry=0x46b0e2 "", 
    parent=parent@entry=0x7fffffffdc30, blkmap=0x0) at dir2.c:1988
#8  0x000000000041189f in process_dinode_int (mp=mp@entry=0x7fffffffe030, dino=dino@entry=0x1e560e00, agno=agno@entry=0, ino=ino@entry=260256256, was_free=<optimized out>, dirty=dirty@entry=0x7fffffffdc28, 
    used=used@entry=0x7fffffffdc24, verify_mode=verify_mode@entry=0, uncertain=uncertain@entry=0, ino_discovery=ino_discovery@entry=1, check_dups=check_dups@entry=0, extra_attr_check=extra_attr_check@entry=1, 
    isa_dir=isa_dir@entry=0x7fffffffdc2c, parent=parent@entry=0x7fffffffdc30) at dinode.c:2881
#9  0x00000000004124ce in process_dinode (mp=mp@entry=0x7fffffffe030, dino=dino@entry=0x1e560e00, agno=agno@entry=0, ino=ino@entry=260256256, was_free=<optimized out>, dirty=dirty@entry=0x7fffffffdc28, used=used@entry=0x7fffffffdc24, 
    ino_discovery=ino_discovery@entry=1, check_dups=check_dups@entry=0, extra_attr_check=extra_attr_check@entry=1, isa_dir=isa_dir@entry=0x7fffffffdc2c, parent=parent@entry=0x7fffffffdc30) at dinode.c:2989
#10 0x000000000040b96f in process_inode_chunk (mp=mp@entry=0x7fffffffe030, agno=agno@entry=0, first_irec=first_irec@entry=0x7fffc055a3f0, ino_discovery=ino_discovery@entry=1, check_dups=check_dups@entry=0, 
    extra_attr_check=extra_attr_check@entry=1, bogus=bogus@entry=0x7fffffffdcb4, num_inos=<optimized out>) at dino_chunks.c:772
#11 0x000000000040cddd in process_aginodes (mp=0x7fffffffe030, pf_args=pf_args@entry=0x0, agno=agno@entry=0, ino_discovery=ino_discovery@entry=1, check_dups=check_dups@entry=0, extra_attr_check=extra_attr_check@entry=1)
    at dino_chunks.c:1025
#12 0x000000000041964e in process_ag_func (wq=0x7fffffffdda0, agno=0, arg=0x0) at phase3.c:77
#13 0x00000000004265da in prefetch_ag_range (work=0x7fffffffdda0, start_ag=<optimized out>, end_ag=32, dirs_only=false, func=0x419600 <process_ag_func>) at prefetch.c:907
#14 0x000000000042666c in do_inode_prefetch (mp=mp@entry=0x7fffffffe030, stride=0, func=func@entry=0x419600 <process_ag_func>, check_cache=check_cache@entry=false, dirs_only=dirs_only@entry=false) at prefetch.c:970
#15 0x000000000041975d in process_ags (mp=0x7fffffffe030) at phase3.c:85
#16 phase3 (mp=mp@entry=0x7fffffffe030) at phase3.c:121
#17 0x000000000040388e in main (argc=<optimized out>, argv=<optimized out>) at xfs_repair.c:785
A debugging session is active.

	Inferior 1 [process 16516] will be killed.

Quit anyway? (y or n) 

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