diff options
| author | Alan Cox <alan@redhat.com> | 2009-01-15 16:30:25 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-15 23:48:35 +0300 |
| commit | c0253eec2a8e1140dd9672a1efe095cdcf5811d0 (patch) | |
| tree | c48dc5283ca4f01005295a97a28e532818aedce6 /Documentation/SM501.txt | |
| parent | 5393f780277165f282a37ed82dd878159ec9dad5 (diff) | |
| download | linux-c0253eec2a8e1140dd9672a1efe095cdcf5811d0.tar.xz | |
tty: Fix race in the flush for some ldiscs
If you issue an ioctl to flush a tty as the line discipline is changing or
otherwise unplugged you can get a crash. The bug is very old but the rest
of the BKL lock dropping and some very "good" luck on Ingo's part caught
an example.
Use the correct ldisc_ref form so that we wait for the ldisc change to
complete and then flush
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/SM501.txt')
0 files changed, 0 insertions, 0 deletions