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| author | Matthias Reichl <hias@horus.com> | 2020-11-05 13:34:32 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-06 17:24:49 +0100 |
| commit | 4466d6d2f80c1193e0845d110277c56da77a6418 (patch) | |
| tree | f5814b105f5b9cf07ae532571cf7f735c5072796 /drivers/clk/renesas/r8a7743-cpg-mssr.c | |
| parent | serial: txx9: add missing platform_driver_unregister() on error in serial_txx... (diff) | |
| download | linux-4466d6d2f80c1193e0845d110277c56da77a6418.tar.xz linux-4466d6d2f80c1193e0845d110277c56da77a6418.zip | |
tty: fix crash in release_tty if tty->port is not set
Commit 2ae0b31e0face ("tty: don't crash in tty_init_dev when missing
tty_port") didn't fully prevent the crash as the cleanup path in
tty_init_dev() calls release_tty() which dereferences tty->port
without checking it for non-null.
Add tty->port checks to release_tty to avoid the kernel crash.
Fixes: 2ae0b31e0face ("tty: don't crash in tty_init_dev when missing tty_port")
Signed-off-by: Matthias Reichl <hias@horus.com>
Link: https://lore.kernel.org/r/20201105123432.4448-1-hias@horus.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/clk/renesas/r8a7743-cpg-mssr.c')
0 files changed, 0 insertions, 0 deletions