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| author | Dmitry Safonov <[email protected]> | 2018-07-30 17:32:36 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-07-30 19:42:22 +0000 |
| commit | 61f4b23769f0cc72ae62c9a81cf08f0397d40da8 (patch) | |
| tree | 14625a2389a9357a44870604c3bff5f80ee3edcd /fs/btrfs/dev-replace.c | |
| parent | Merge tag 'linux-can-fixes-for-4.18-20180730' of ssh://gitolite.kernel.org/pu... (diff) | |
| download | kernel-61f4b23769f0cc72ae62c9a81cf08f0397d40da8.tar.gz kernel-61f4b23769f0cc72ae62c9a81cf08f0397d40da8.zip | |
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: 7acf9d4237c4 ("netlink: Do not subscribe to non-existent groups").
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Dmitry Safonov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions