[dm-devel] [PATCH 0/4] libmpathpersist allocation size fixes

mwilck at suse.com mwilck at suse.com
Fri Mar 6 23:06:01 UTC 2020


From: Martin Wilck <mwilck at suse.com>

Hi Christophe,

We recently found a problem with mpathpersist using an allocation length
of > 8192 bytes for PERSISTENT RESERVE IN/OUT commands. This patch set
tries to fix it. The last patch would change the ABI for external programs,
it's optional.

(Christophe, to avoid misunderstanding:	This set is not meant to be included
in the upcoming merge).

Reviews and comments welcome.

Regards,
Martin

Martin Wilck (4):
  libmpathpersist: limit PRIN allocation length to 8192 bytes
  libmpathpersist: format_transportids(): avoid PROUT overflow
  libmpathpersist: mpath_format_readfullstatus(): use real buffer size
  libmpathpersist: ABI change: limit data-in/out size to 8192 bytes

 libmpathpersist/mpath_persist.h  | 15 ++++++++----
 libmpathpersist/mpath_pr_ioctl.c | 40 +++++++++++++++++++++++++++-----
 2 files changed, 45 insertions(+), 10 deletions(-)

-- 
2.25.1





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