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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-04 11:06:13 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-01 09:48:05 +0100 |
| commit | c428d528f8a0aa70473cc9a87374ed4ec75626ec (patch) | |
| tree | 1cb5fbc870ecef06a7346f86127146616b2d0ed0 | |
| parent | c47386bdb907e89956994212ea1190e117d5cbbf (diff) | |
| download | linux-stable-c428d528f8a0aa70473cc9a87374ed4ec75626ec.tar.gz linux-stable-c428d528f8a0aa70473cc9a87374ed4ec75626ec.tar.bz2 linux-stable-c428d528f8a0aa70473cc9a87374ed4ec75626ec.zip | |
tty: wipe buffer.
commit c9a8e5fce009e3c601a43c49ea9dbcb25d1ffac5 upstream.
After we are done with the tty buffer, zero it out.
Reported-by: aszlig <aszlig@nix.build>
Tested-by: Milan Broz <gmazyland@gmail.com>
Tested-by: Daniel Zatovic <daniel.zatovic@gmail.com>
Tested-by: aszlig <aszlig@nix.build>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/tty_buffer.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 143deb62467d..0d3fc2dae23a 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -415,6 +415,8 @@ receive_buf(struct tty_struct *tty, struct tty_buffer *head, int count) disc->ops->receive_buf(tty, p, f, count); } head->read += count; + if (count > 0) + memset(p, 0, count); return count; } |