Messages in this thread Patch in this message | | | From | Alexander Beregalov <> | Subject | [PATCH] uml: line.c: avoid NULL pointer dereference | Date | Thu, 7 Jan 2010 18:57:03 +0300 |
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Assign tty only if line is not NULL.
Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> --- arch/um/drivers/line.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index cf8a97f..4a46253 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -18,10 +18,12 @@ static irqreturn_t line_interrupt(int irq, void *data) { struct chan *chan = data; struct line *line = chan->line; - struct tty_struct *tty = line->tty; + struct tty_struct *tty; - if (line) + if (line) { + tty = line->tty; chan_interrupt(&line->chan_list, &line->task, tty, irq); + } return IRQ_HANDLED; } -- 1.6.6
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