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Bug 1365124 - dump -0.4-0.28 crashes with a SEGV after writing 1 10K block to dumpfile
Summary: dump -0.4-0.28 crashes with a SEGV after writing 1 10K block to dumpfile
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: dump
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Josef Ridky
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
: 1366864 1367385 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-08-08 13:07 UTC by Valdis Kletnieks
Modified: 2016-10-28 00:40 UTC (History)
5 users (show)

Fixed In Version: dump-0.4-0.29.b45.fc24 dump-0.4-0.30.b46.fc25
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-10-28 00:40:00 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Valdis Kletnieks 2016-08-08 13:07:06 UTC 
Description of problem:

Dump crashes when it starts trying to dump the data - it writes one block and dies.

GDB says:

(gdb) run -0 -z3 -u -f /disk2/backups/zz9.dump -L / /
Starting program: /usr/sbin/dump -0 -z3 -u -f /disk2/backups/zz9.dump -L / /
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
  DUMP: Date of this level 0 dump: Mon Aug  8 08:51:13 2016
  DUMP: Dumping /dev/mapper/turing--police-root (/) to /disk2/backups/zz9.dump
  DUMP: Label: /
  DUMP: Writing 10 Kilobyte records
  DUMP: Compressing output at transformation level 3 (zlib)
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 159656 blocks.
Detaching after fork from child process 76592.
  DUMP: Volume 1 started with block 1 at: Mon Aug  8 08:51:14 2016
  DUMP: dumping (Pass III) [directories]
  DUMP: SIGSEGV: ABORTING!
  DUMP: SIGSEGV: ABORTING!
  DUMP: SIGSEGV: ABORTING!
  DUMP: SIGSEGV: ABORTING!

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7040450 in __libc_wait (stat_loc=stat_loc@entry=0x7fffffffb178) at ../sysdeps/unix/sysv/linux/wait.c:29
29        pid_t result = SYSCALL_CANCEL (wait4, WAIT_ANY, stat_loc, 0,
Missing separate debuginfos, use: dnf debuginfo-install bzip2-libs-1.0.6-20.fc24.x86_64 e2fsprogs-libs-1.43.1-2.fc25.x86_64 libcom_err-1.43.1-2.fc25.x86_64 lzo-2.08-8.fc24.x86_64 zlib-1.2.8-10.fc24.x86_64
(gdb) where
#0  0x00007ffff7040450 in __libc_wait (stat_loc=stat_loc@entry=0x7fffffffb178) at ../sysdeps/unix/sysv/linux/wait.c:29
#1  0x000055555555c568 in startnewtape (top=1) at tape.c:813
#2  0x0000555555558116 in main (argc=<optimized out>, argv=0x7fffffffe570) at main.c:930

zz9.dump has exactly 1 10K (default size) block:

ls -l /disk2/backups/zz9.dump 
-rw-r--r--. 1 root root 10240 Aug  8 08:51 /disk2/backups/zz9.dump

dump-0.4-0.27.b44.fc24.x86_64 works just fine...


Version-Release number of selected component (if applicable):
dump-0.4-0.28.b45.fc26.x86_64

How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Comment 1 Fedora Update System 2016-08-11 10:47:31 UTC 
dump-0.4-0.29.b45.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-83a3339530
Comment 2 Fedora Update System 2016-08-11 10:47:46 UTC 
dump-0.4-0.29.b45.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-a344486d48
Comment 3 Valdis Kletnieks 2016-08-11 16:12:23 UTC 
Pulled dump-0.4-0.29.b45.fc26.x86_64 down from koji, confirming that it works OK, thanks for the quick fix....
Comment 4 Fedora Update System 2016-08-11 16:56:05 UTC 
dump-0.4-0.29.b45.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-a344486d48
Comment 5 Fedora Update System 2016-08-12 03:02:53 UTC 
dump-0.4-0.29.b45.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-83a3339530
Comment 6 Josef Ridky 2016-08-15 08:11:19 UTC 
*** Bug 1366864 has been marked as a duplicate of this bug. ***
Comment 7 Josef Ridky 2016-08-16 10:33:59 UTC 
*** Bug 1367385 has been marked as a duplicate of this bug. ***
Comment 8 Jason Tibbitts 2016-09-01 16:42:34 UTC 
So I'm running Fedora 24 with dump-0.4-0.29.b45.fc24.x86_64 (which I believe according to comment 1 means that I should have the fix for this).  But I'm still seeing segfaults:

# /sbin/dump -v -0 -s 1048576 -f - /dev/mapper/vg0-var > /dev/null
  DUMP: Date of this level 0 dump: Thu Sep  1 10:22:49 2016
  DUMP: Dumping /dev/mapper/vg0-var (/var) to standard output
  DUMP: Excluding inode 8 (journal inode) from dump
  DUMP: Excluding inode 7 (resize inode) from dump
  DUMP: Label: none
  DUMP: Writing 10 Kilobyte records
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 2807705 blocks.
  DUMP: Volume 1 started with block 1 at: Thu Sep  1 10:22:49 2016
  DUMP:   DUMP: SIGSEGV: ABORTING!
  DUMP:   DUMP: SIGSEGV: ABORTING!
SIGSEGV: ABORTING!
Segmentation fault (core dumped)
[root@rsync2 tmp]#   DUMP: Broken pipe
  DUMP: The ENTIRE dump is aborted.

I get some number of core files, usually three.  Here are the backtraces for each.

#0  0x00007faa65dca5be in __libc_wait (stat_loc=stat_loc@entry=0x7ffcfb53ced8) at ../sysdeps/unix/sysv/linux/wait.c:29
#1  0x00005632d4411588 in startnewtape (top=1) at tape.c:813
#2  0x00005632d440d136 in main (argc=<optimized out>, argv=0x7ffcfb5402c8) at main.c:930


#0  0x00007f84a760c02e in __read_nocancel () at ../sysdeps/unix/syscall-template.S:84
#1  0x000055fce07ce51e in read (__nbytes=16, __buf=0x7ffe07b08740, __fd=8) at /usr/include/bits/unistd.h:44
#2  dump_atomic_read (fd=8, buf=buf@entry=0x7ffe07b08740 "", count=count@entry=16) at tape.c:1351
#3  0x000055fce07cff1e in flushtape () at tape.c:418
#4  0x000055fce07d0496 in writerec (dp=dp@entry=0x55fce0c7c1a0, isspcl=isspcl@entry=0) at tape.c:253
#5  0x000055fce07d0f95 in dumpmap (map=<optimized out>, type=<optimized out>, ino=<optimized out>) at traverse.c:1310
#6  0x000055fce07cb159 in main (argc=<optimized out>, argv=0x7ffe07b0ba18) at main.c:932


#0  0x0000000000000000 in ?? ()
#1  0x000055fce07cea6b in doslave (cmd=5, first=<optimized out>) at tape.c:1329
#2  0x000055fce07cf664 in enslave () at tape.c:1047
#3  startnewtape (top=1) at tape.c:908
#4  0x000055fce07cb136 in main (argc=<optimized out>, argv=0x7ffe07b0ba18) at main.c:930
Comment 9 Jason Tibbitts 2016-09-01 16:44:43 UTC 
Never mind, somehow I got the crash on one machine but ran rpm -q on another. I pulled the update from testing onto the problem machine and everything works fine now.

Sorry for the trouble.
Comment 10 Fedora Update System 2016-09-02 20:54:03 UTC 
dump-0.4-0.29.b45.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2016-09-15 13:09:11 UTC 
dump-0.4-0.30.b46.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-efe4ccf884
Comment 12 Fedora Update System 2016-09-16 01:24:19 UTC 
dump-0.4-0.30.b46.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-efe4ccf884
Comment 13 Fedora Update System 2016-10-28 00:40:00 UTC 
dump-0.4-0.30.b46.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
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