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| author | Arnd Bergmann <arnd@arndb.de> | 2017-08-02 13:11:39 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-27 11:00:13 +0200 |
| commit | c13c5c7e88d79cae57ac25c6a3946cb17418ae3f (patch) | |
| tree | f6061a7337be119f19de2d06b24c82d4cf62d4a9 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | 077933dcd5cabd45e82aceab45dec772ebecbd09 (diff) | |
tty: fix __tty_insert_flip_char regression
commit 8a5a90a2a477b86a3dc2eaa5a706db9bfdd647ca upstream.
Sergey noticed a small but fatal mistake in __tty_insert_flip_char,
leading to an oops in an interrupt handler when using any serial
port.
The problem is that I accidentally took the tty_buffer pointer
before calling __tty_buffer_request_room(), which replaces the
buffer. This moves the pointer lookup to the right place after
allocating the new buffer space.
Fixes: 979990c62848 ("tty: improve tty_insert_flip_char() fast path")
Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions