[Bug 1792745] Re: NetworkManager crashed with SIGSEGV in _int_malloc()

[Anders Kaseorg]

** Patch added: "debdiff adding upstream patch"
   https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1792745/+attachment/5191867/+files/network-manager_1.12.2-0ubuntu4_lp1792745.debdiff

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Title:
  NetworkManager crashed with SIGSEGV in _int_malloc()

Status in NetworkManager:
  Unknown
Status in network-manager package in Ubuntu:
  New

Bug description:
  I’m seeing NetworkManager crash several times on startup and on resume
  from suspend. Apport doesn’t catch those for some reason, but this
  happened when I tried to reproduce by manually running NetworkManager
  --debug.

  (Different crash from bug 1792743?  Also apport-retrace didn’t seem to
  like that one.)

  ProblemType: Crash
  DistroRelease: Ubuntu 18.10
  Package: network-manager 1.12.2-0ubuntu4
  ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
  Uname: Linux 4.18.0-7-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 2.20.10-0ubuntu9
  Architecture: amd64
  Date: Sat Sep 15 14:04:50 2018
  EcryptfsInUse: Yes
  ExecutablePath: /usr/sbin/NetworkManager
  IfupdownConfig: # ifupdown has been replaced by netplan(5) on this system.  Do not edit.
  InstallationDate: Installed on 2016-02-19 (939 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160218)
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=false
  ProcCmdline: NetworkManager --debug
  SegvAnalysis:
   Segfault happened at: 0x7f79966ea378 <_int_malloc+3352>:	cmp    %rcx,0x18(%rdx)
   PC (0x7f79966ea378) ok
   source "%rcx" ok
   destination "0x18(%rdx)" (0x00000018) not located in a known VMA region (needed writable region)!
  SegvReason: writing NULL VMA
  Signal: 11
  SourcePackage: network-manager
  StacktraceTop:
   _int_malloc (av=av at entry=0x7f799683ac40 <main_arena>, bytes=bytes at entry=4096) at malloc.c:4014
   __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3420
   g_malloc0 () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
   nlmsg_alloc_size (len=4096) at src/platform/nm-netlink.c:314
   _nl80211_alloc_msg (id=28, ifindex=2, phy=0, cmd=cmd at entry=32, flags=flags at entry=768) at src/platform/wifi/wifi-utils-nl80211.c:88
  Title: NetworkManager crashed with SIGSEGV in _int_malloc()
  UpgradeStatus: Upgraded to cosmic on 2018-08-17 (29 days ago)
  UserGroups:
   
  nmcli-con: Error: command ['nmcli', '-f', 'all', 'con'] failed with exit code 8: Error: NetworkManager is not running.
  nmcli-dev: Error: command ['nmcli', '-f', 'all', 'dev'] failed with exit code 8: Error: NetworkManager is not running.
  nmcli-nm: Error: command ['nmcli', '-f', 'all', 'gen'] failed with exit code 8: Error: NetworkManager is not running.

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