tty: Fix tty_send_xchar() lock order inversion

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commit ee0c1a65cf upstream.

The correct lock order is atomic_write_lock => termios_rwsem, as
established by tty_write() => n_tty_write().

Fixes: c274f6ef1c ("tty: Hold termios_rwsem for tcflow(TCIxxx)")
Reported-and-Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Peter Hurley 2015-11-11 08:03:54 -05:00 • committed by Greg Kroah-Hartman

parent 8d0fe5721d

commit ff4fcbdf43

2 changed files with 4 additions and 4 deletions

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4

drivers/tty/tty_io.c

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4

drivers/tty/tty_ioctl.c

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