diff options
| author | Todd Kjos <[email protected]> | 2021-08-30 12:51:46 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2021-09-14 09:02:13 +0200 |
| commit | 5fdb55c1ac9585eb23bb2541d5819224429e103d (patch) | |
| tree | 1ce65a704c88f44dabcc6e58538d0d4fa3902efc /drivers/fpga/fpga-bridge.c | |
| parent | b564171ade70570b7f335fa8ed17adb28409e3ac (diff) | |
binder: make sure fd closes complete
During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object
cleanup may close 1 or more fds. The close operations are
completed using the task work mechanism -- which means the thread
needs to return to userspace or the file object may never be
dereferenced -- which can lead to hung processes.
Force the binder thread back to userspace if an fd is closed during
BC_FREE_BUFFER handling.
Fixes: 80cd795630d6 ("binder: fix use-after-free due to ksys_close() during fdget()")
Cc: stable <[email protected]>
Reviewed-by: Martijn Coenen <[email protected]>
Acked-by: Christian Brauner <[email protected]>
Signed-off-by: Todd Kjos <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-bridge.c')
0 files changed, 0 insertions, 0 deletions