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| author | Peter Hurley <peter@hurleysoftware.com> | 2015-06-27 09:21:32 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-07-23 15:05:53 -0700 |
| commit | 3b19e032295647b7be2aa3be62510db4aaeda759 (patch) | |
| tree | 42d49b560e263749594dd73e5b149460bdad3dfd /drivers/tty/serial/amba-pl011.c | |
| parent | 52721d9d3334c1cb1f76219a161084094ec634dc (diff) | |
| download | op-kernel-dev-3b19e032295647b7be2aa3be62510db4aaeda759.zip op-kernel-dev-3b19e032295647b7be2aa3be62510db4aaeda759.tar.gz | |
n_tty: signal and flush atomically
When handling signalling char, claim the termios write lock before
signalling waiting readers and writers to prevent further i/o
before flushing the echo and output buffers. This prevents a
userspace signal handler which may output from racing the terminal
flush.
Reference: Bugzilla #99351 ("Output truncated in ssh session after...")
Fixes: commit d2b6f44779d3 ("n_tty: Fix signal handling flushes")
Reported-by: Filipe Brandenburger <filbranden@google.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
0 files changed, 0 insertions, 0 deletions
