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linux/net/netlink
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Dmitry Safonov 61f4b23769 netlink: Don't shift with UB on nlk->ngroups 
On i386 nlk->ngroups might be 32 or 0. Which leads to UB, resulting in
hang during boot.
Check for 0 ngroups and use (unsigned long long) as a type to shift.

Fixes: 7acf9d4237 ("netlink: Do not subscribe to non-existent groups").
Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-30 12:42:22 -07:00
..
af_netlink.c netlink: Don't shift with UB on nlk->ngroups 2018-07-30 12:42:22 -07:00
af_netlink.h af_netlink: ensure that NLMSG_DONE never fails in dumps 2017-11-13 10:17:13 +09:00
diag.c rhashtable: Change rhashtable_walk_start to return void 2017-12-11 09:58:38 -05:00
genetlink.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
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