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| author | Tina Zhang <tina.zhang@intel.com> | 2020-02-25 13:35:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-05 16:43:45 +0100 |
| commit | 30b8a98a1ab30d3622d2fa34794dd3ef0e01eca2 (patch) | |
| tree | 6c503094d07477b9a42439a2895c02e7744fa1d2 /COPYING | |
| parent | 55105073e43c2c94fe3cb668bb6e2a24506552c8 (diff) | |
drm/i915/gvt: Fix orphan vgpu dmabuf_objs' lifetime
commit b549c252b1292aea959cd9b83537fcb9384a6112 upstream.
Deleting dmabuf item's list head after releasing its container can lead
to KASAN-reported issue:
BUG: KASAN: use-after-free in __list_del_entry_valid+0x15/0xf0
Read of size 8 at addr ffff88818a4598a8 by task kworker/u8:3/13119
So fix this issue by puting deleting dmabuf_objs ahead of releasing its
container.
Fixes: dfb6ae4e14bd6 ("drm/i915/gvt: Handle orphan dmabuf_objs")
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200225053527.8336-2-tina.zhang@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions