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| author | Alex Dewar <alex.dewar90@gmail.com> | 2020-08-25 17:45:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 09:03:03 +0100 |
| commit | 8fe65dbd5e49b2168a0e1b44f40f441ae17ae3db (patch) | |
| tree | 586526ea075455aed4699f1942b4cf1748c4f31e /tools/perf/scripts/python/netdev-times.py | |
| parent | d22e0f8d72eddb31b50f6cfca0c20f3d68ac48b0 (diff) | |
VMCI: check return value of get_user_pages_fast() for errors
[ Upstream commit 90ca6333fd65f318c47bff425e1ea36c0a5539f6 ]
In a couple of places in qp_host_get_user_memory(),
get_user_pages_fast() is called without properly checking for errors. If
e.g. -EFAULT is returned, this negative value will then be passed on to
qp_release_pages(), which expects a u64 as input.
Fix this by only calling qp_release_pages() when we have a positive
number returned.
Fixes: 06164d2b72aa ("VMCI: queue pairs implementation.")
Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Link: https://lore.kernel.org/r/20200825164522.412392-1-alex.dewar90@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions