Running an strace still offers no clues to this problem...
When running:
# strace yum --help 2>&1 | cat > yum-tracelog
I see this at the end of the log.
>>
open("/lib64/libsepol.so.1", O_RDONLY) = 6
read(6, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0=\300C7\0\0\0"..., 832) = 832
fstat(6, {st_mode=S_IFREG|0755, st_size=247496, ...}) = 0
mmap(0x3743c00000, 2383136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 6, 0) = 0x3743c00000
mprotect(0x3743c3b000, 2097152, PROT_NONE) = 0
mmap(0x3743e3b000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 6, 0x3b000) = 0x3743e3b000
mmap(0x3743e3c000, 40224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3743e3c000
close(6) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
<<
So after closing /lib64/libsepol.so.1, the segfault is triggered.
But, since I disabled selinux, why is there a call to libsepol.so.1 ?
On a my mirror-server, the same call to # yum --help" does work without segfault.
An strace in this situation, will show that after closing the /lib64/libespol.so.1 the next commands are traced ...
>
mprotect(0x319a607000, 4096, PROT_READ) = 0
access("/etc/selinux/", F_OK) = 0
open("/etc/selinux/config", O_RDONLY) = 6
fstat(6, {st_mode=S_IFREG|0644, st_size=511, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b9d45eb4000
read(6, "# This file controls the state o"..., 4096) = 511
read(6, "", 4096) = 0
close(6)
<
/etc/selinux/config is identical on both systems.
Anyone a clue ?
Regards,
Carel
-----Original Message-----
From: Zhi-Wei Lu [mailto:[log in to unmask]]
Sent: dinsdag 24 juni 2014 14:18
To: Werf, C.G. van der (Carel); [log in to unmask]
Subject: RE: yum segfaulting
I had similar problem before, someone changed the stock system libz.so with a newer version libz.so, which yum didn't like it!
Zhi-Wei Lu
IET-CR-Network Operations Center
University of California, Davis
(530) 752-0155
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Werf, C.G. van der (Carel)
Sent: Tuesday, June 24, 2014 12:23 AM
To: [log in to unmask]
Subject: yum segfaulting
Hi,
I have two identical SL 5.3 fileservers, who function as a DRBD-pair.
One of them was recently completely replaced with identical hardware, so I had to image the old one, and install OS-image on "new" server.
But now, when I run yum on the new server, it returns a segmentation fault (even a simple: # yum --help).
Googling this, a lot of pages hint for a memory error. But, running a memtest did not show any error.
So far, only yum returns the segmentation fault.
Does anyone have any clue for this ?
Regards,
Carel van der Werf
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