** Bug watch added: Samba Bugzilla #6422
   https://bugzilla.samba.org/show_bug.cgi?id=6422

** Also affects: glibc via
   https://bugzilla.samba.org/show_bug.cgi?id=6422
   Importance: Unknown
       Status: Unknown

** Project changed: glibc => rsync

** Package changed: glibc (Ubuntu) => rsync (Ubuntu)

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https://bugs.launchpad.net/bugs/1746995

Title:
  regression in 2.23-0ubuntu10: rsync in glusterfs's georeplication
  fails

Status in rsync:
  Unknown
Status in rsync package in Ubuntu:
  Confirmed

Bug description:
  Since somewhere in the Jan 14-18 range my glusterfs georeplication
  reports Faulty. Georeplication uses rsync internally, and tracking
  this this down leads to an exit code 3 out of rsync.

  I have no stacktraces myself, but I found this report about the same
  problem:

  https://www.spinics.net/lists/gluster-users/msg33568.html

  with traces:

  
  strace rsync :

  30743 23:34:47 newfstatat(3, "6737", {st_mode=S_IFDIR|0755, st_size=4096, 
...}, AT_SYMLINK_NOFOLLOW) = 0
  30743 23:34:47 newfstatat(3, "6741", {st_mode=S_IFDIR|0755, st_size=4096, 
...}, AT_SYMLINK_NOFOLLOW) = 0
  30743 23:34:47 getdents(3, /* 0 entries */, 131072) = 0
  30743 23:34:47 munmap(0x7fa4feae7000, 135168) = 0
  30743 23:34:47 close(3)                 = 0
  30743 23:34:47 write(2, "rsync: getcwd(): No such file or directory (2)", 46) 
= 46
  30743 23:34:47 write(2, "\n", 1)        = 1
  30743 23:34:47 rt_sigaction(SIGUSR1, {SIG_IGN, [], SA_RESTORER, 
0x7fa4fdf404b0}, NULL, 8) = 0
  30743 23:34:47 rt_sigaction(SIGUSR2, {SIG_IGN, [], SA_RESTORER, 
0x7fa4fdf404b0}, NULL, 8) = 0
  30743 23:34:47 write(2, "rsync error: errors selecting input/output files, 
dirs (code 3) at util.c(1056) [Receiver=3.1.1]", 96) = 96
  30743 23:34:47 write(2, "\n", 1)        = 1
  30743 23:34:47 exit_group(3)            = ?
  30743 23:34:47 +++ exited with 3 +++

  
  The Changelog of glibc mentions that getcwd has been changed:

    * SECURITY UPDATE: Buffer underflow in realpath()
      - debian/patches/any/cvs-make-getcwd-fail-if-path-is-no-absolute.diff:
        Make getcwd(3) fail if it cannot obtain an absolute path
      - CVE-2018-1000001

  and downgrading glibc to (2.23-0ubuntu3) indeed fixes my
  georeplication problem. 0ubuntu3 is the latest version that is
  available in the repositories, other than 0ubuntu10.

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