[Bug 1921919] Re: URfkill Segmentation fault with missing DMI info

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** Tags added: patch

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Title:
  URfkill Segmentation fault  with missing DMI info

Status in urfkill package in Ubuntu:
  In Progress

Bug description:
  The version of urfkill in -proposed has a possible segmentation fault
  if the call to get_dmi_info fails. After this there is an attempt to
  free an uninitialized variable. This was blocking the migration from
  -proposed.

  kernel: urfkilld[46754]: segfault (11) at 0 nip 955592940dc lr 955592940d4 code 1 in urfkill (11) at 0 nip 955592940dc lr 955592940d4 code 1 in urfkilld[95559280000+30000]
  kernel: urfkilld[46754]: code: 38a56b88 38800010 4bff07ad e8410018 4bfffcac 3ca2fffd 7e238b a56b88 38800010 4bff07ad e8410018 4bfffcac 3ca2fffd 7e238b78 38a56ad0
  kernel: urfkilld[46754]: code: 38800010 4bff0791 e8410018 39200000 <93090000> eb010100 4bff800010 4bff0791 e8410018 39200000 <93090000> eb010100 4bfff5e4 60000000

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