[Bug 488285] Re: multipathd segfault

[Serge Hallyn]

** Description changed:

  Binary package hint: multipath-tools
+ 
+ SRU justification:
+ =====
+ Impact: stopping multipathd (i.e. to restart) can cause a segfault
+ How bug addressed: an upstream patch is cherrypicked which avoids dereferencing a backlog of syslog messages when it is empty.
+ Patch: See the debdiff in comment #8
+ Instructions: Start multipathd, then stop it, watch segfault.
+ Regression potential: If there were an error in the patch, then it should at worst fail to log backlogged syslog messages at shutdown.
+ =====
  
  Sometimes multipathd segfault when i do /etc/init.d/multipath-tools
  restart
  
  kernel: [ 1507.119302] multipathd[1595]: segfault at a ip 00007f1e3f106eda sp 00007fff66618440 error 4 in libc-2.10.1.so[7f1e3f091000+166000]
  kernel: [  118.628780] multipathd[1585]: segfault at a ip 00007fa347beeeda sp 00007fff2a53e0f0 error 4 in libc-2.10.1.so[7fa347b79000+166000]
  kernel: [  150.051148] multipathd[2750]: segfault at a ip 00007f61bf42feda sp 00007fff0e5027d0 error 4 in libc-2.10.1.so[7f61bf3ba000+166000]
  kernel: [  631.839777] multipathd[6280]: segfault at a ip 00007f5ca8c42eda sp 00007fffd0f7b7f0 error 4 in libc-2.10.1.so[7f5ca8bcd000+166000]
  kernel: [  798.741986] multipathd[6607]: segfault at a ip 00007f4af50fdeda sp 00007fff77cbca60 error 4 in libc-2.10.1.so[7f4af5088000+166000]
  kernel: [  911.696705] multipathd[7465]: segfault at a ip 00007fe8ca569eda sp 00007ffff715f180 error 4 in libc-2.10.1.so[7fe8ca4f4000+166000]
  kernel: [ 1067.310120] multipathd[8346]: segfault at a ip 00007f9ffbba8eda sp 00007fff607f1780 error 4 in libc-2.10.1.so[7f9ffbb33000+166000]
  kernel: [64755.500780] multipathd[8832]: segfault at a ip 00007fbb056beeda sp 00007fff5f3a6260 error 4 in libc-2.10.1.so[7fbb05649000+166000]
  kernel: [12634.257334] multipathd[1598]: segfault at a ip 00007f45643eaeda sp 00007fffde6d9c40 error 4 in libc-2.10.1.so[7f4564375000+166000]
  kernel: [12764.271327] multipathd[20491]: segfault at 10 ip 00007fed4fd756b4 sp 00007fed50187f80 error 4 in libpthread-2.10.1.so[7fed4fd6b000+17000]
  kernel: [13211.173415] multipathd[21145]: segfault at a ip 00007f80c27f9eda sp 00007fffca3090a0 error 4 in libc-2.10.1.so[7f80c2784000+166000]
  kernel: [13320.949129] multipathd[24947]: segfault at a ip 00007fe713bf0eda sp 00007fffb3d15910 error 4 in libc-2.10.1.so[7fe713b7b000+166000]
  kernel: [407603.710900] multipathd[3048]: segfault at a ip 00007fa9c053deda sp 00007fffe3ab6330 error 4 in libc-2.10.1.so[7fa9c04c8000+166000]
  kernel: [53589.949830] multipathd[5156]: segfault at a ip 00007fe124907eda sp 00007fff7922dd00 error 4 in libc-2.10.1.so[7fe124892000+166000]
  kernel: [53620.587085] multipathd[3065]: segfault at a ip 00007f8768e36eda sp 00007ffff5bcdca0 error 4 in libc-2.10.1.so[7f8768dc1000+166000]
  kernel: [53656.093356] multipathd[3333]: segfault at a ip 00007f90ac095eda sp 00007fffe7b497f0 error 4 in libc-2.10.1.so[7f90ac020000+166000]
  kernel: [62144.892185] multipathd[3654]: segfault at a ip 00007f63a26c5eda sp 00007fff11745940 error 4 in libc-2.10.1.so[7f63a2650000+166000]
  kernel: [80138.461495] multipathd[5405]: segfault at a ip 00007f790164ceda sp 00007fff56a3d840 error 4 in libc-2.10.1.so[7f79015d7000+166000]
  
- 
  1)
  lsb_release -r
  Release:	9.10
  
  2)
  multipath-tools:
-   Installé : 0.4.8-14ubuntu2
-   Candidat : 0.4.8-14ubuntu2
-  Table de version :
-  *** 0.4.8-14ubuntu2 0
-         500 http://archive.ubuntu.com karmic/main Packages
-         100 /var/lib/dpkg/status
+   Installé : 0.4.8-14ubuntu2
+   Candidat : 0.4.8-14ubuntu2
+  Table de version :
+  *** 0.4.8-14ubuntu2 0
+         500 http://archive.ubuntu.com karmic/main Packages
+         100 /var/lib/dpkg/status
  
  3) a restart without segfault
  
  4) multipathd segfault

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https://bugs.launchpad.net/bugs/488285

Title:
  multipathd segfault