[Samba] segfault in smbclient 4.13.2?
Andrew Bartlett
abartlet at samba.org
Wed Mar 3 17:41:38 UTC 2021
Looks like a known issue to me. Try 4.13.3:
https://www.samba.org/samba/history/samba-4.13.3.html
commit 9f24b5098f796f364a3f403ad4e9ae28b3c0935a
Author: Volker Lendecke <vl at samba.org>
Date: Mon Sep 28 15:03:41 2020 +0200
smbclient: Fix recursive mget
Make do_mget rely on do_list() already doing the recursion in a
breadth-first manner. The previous code called do_list() from
within
its callback. Unfortunately the recent simplifications of do_list()
broke this, leading to recursive mget to segfault. Instead of
figuring
out how this worked before the simplifications in do_list() (I did
spend a few hours on this) and fixing it, I chose to restructure
do_mget() to not recursively call do_list() anymore but instead
rely
on do_list() to do the recursion. Saves quite a few lines of code
and
complexity.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=14517
Signed-off-by: Volker Lendecke <vl at samba.org>
Reviewed-by: Jeremy Allison <jra at samba.org>
Autobuild-User(master): Jeremy Allison <jra at samba.org>
Autobuild-Date(master): Wed Sep 30 17:23:45 UTC 2020 on sn-devel-
184
On Wed, 2021-03-03 at 17:57 +0100, Joachim Lindenberg via samba wrote:
> Hello,
>
>
>
>
> As part of my replication script for sysvol, I am using the following excerpt:
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>
> mkdir /tmp/samba/sysvolcopy
>
> cd /tmp/samba/sysvolcopy
>
> peer='cobra.samba.lindenberg.one'
>
> smbclient \\\\$peer\\sysvol 'password' -UJoachim -e --max-protocol SMB3 -c "prompt; recurse; mget *"
>
>
>
>
> with 4.13.2-Debian running on Ubuntu 20.04 I get
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>
>
>
> getting file \samba.lindenberg.one\Policies\{06C651B1-01BC-4B53-8497-40CFD30F94C2}\GPT.INI of size 59 as GPT.INI (0.6 KiloBytes/sec) (average 0.6 KiloBytes/sec)
>
> getting file \samba.lindenberg.one\Policies\{06C651B1-01BC-4B53-8497-40CFD30F94C2}\Machine\comment.cmtx of size 1396 as comment.cmtx (13.0 KiloBytes/sec) (average 6.9 KiloBytes/sec)
>
> getting file \samba.lindenberg.one\Policies\{06C651B1-01BC-4B53-8497-40CFD30F94C2}\Machine\Registry.pol of size 2294 as Registry.pol (20.7 KiloBytes/sec) (average 11.6 KiloBytes/sec)
>
> ./bug.sh: line 4: 3620 Segmentation fault (core dumped) smbclient \\\\$peer\\sysvol 'password' -UJoachim -e --max-protocol SMB3 -c "prompt; recurse; mget *"
>
>
>
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> Whereas with 4.12.11 the script runs through all my sysvol successfully.
>
> Is this a know bug in 4.13? An ACL issue? Anything else to check?
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> Thanks, Joachim
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--
Andrew Bartlett (he/him) https://samba.org/~abartlet/
Samba Team Member (since 2001) https://samba.org
Samba Developer, Catalyst IT https://catalyst.net.nz/services/samba
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