]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
xen-netback: respect gnttab_map_refs()'s return value
authorJan Beulich <jbeulich@suse.com>
Thu, 25 Feb 2021 15:35:15 +0000 (16:35 +0100)
committerJuergen Gross <jgross@suse.com>
Wed, 3 Mar 2021 07:32:11 +0000 (08:32 +0100)
commit2991397d23ec597405b116d96de3813420bdcbc3
tree6c732c2467ced815406dffd9aa821daaa3b2e02f
parent8310b77b48c5558c140e7a57a702e7819e62f04e
xen-netback: respect gnttab_map_refs()'s return value

Commit 3194a1746e8a ("xen-netback: don't "handle" error by BUG()")
dropped respective a BUG_ON() without noticing that with this the
variable's value wouldn't be consumed anymore. With gnttab_set_map_op()
setting all status fields to a non-zero value, in case of an error no
slot should have a status of GNTST_okay (zero).

This is part of XSA-367.

Cc: <stable@vger.kernel.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/d933f495-619a-0086-5fb4-1ec3cf81a8fc@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
drivers/net/xen-netback/netback.c