| 605c4cda | 13-Apr-2020 |
Kyle Evans <[email protected]> |
close_range/closefrom: fix regression from close_range introduction
close_range will clamp the range between [0, fdp->fd_lastfile], but failed
to take into account that fdp->fd_lastfile can become -
close_range/closefrom: fix regression from close_range introduction
close_range will clamp the range between [0, fdp->fd_lastfile], but failed
to take into account that fdp->fd_lastfile can become -1 if all fds are
closed. =-( In this scenario, just return because there's nothing further we
can do at the moment.
Add a test case for this, fork() and simply closefrom(0) twice in the child;
on the second invocation, fdp->fd_lastfile == -1 and will trigger a panic
before this change.
X-MFC-With: r359836
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