Re: [PATCH] staging; lirc, zilog: put_ir_rx may free 'rx' which canlead to double free

From: Dan Carpenter
Date: Fri Jul 29 2011 - 02:10:31 EST


On Thu, Jul 28, 2011 at 11:49:51PM +0200, Jesper Juhl wrote:
> If calling put_ir_rx(rx, true); in
> drivers/staging/lirc/lirc_zilog.c::ir_probe() returns true (1) then it
> means that it has freed it's first argument. Subsequently jumping to
> 'out_put_xx' will cause us to call put_ir_rx() once more since 'rx' is
> not zero - leading to a double free.

It would be better to just remove the first call to put_ir_rx().

regards,
dan carpenter

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