diff mbox

[media] rc: winbond-cir: fix potential double free in wbcir_probe()

Message ID CAPgLHd_F+reJCuGeBne9espy9Rokm1iWMH7C=w3VpuobHa5J_w@mail.gmail.com (mailing list archive)
State Accepted, archived
Headers

Commit Message

Wei Yongjun April 9, 2013, 9:43 a.m. UTC 
  From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Since rc_unregister_device() frees its argument, the subsequently
call to rc_free_device() on the same variable will cause a double
free bug. Fix by set argument to NULL, thus when fall through to
rc_free_device(), nothing will be done there.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/media/rc/winbond-cir.c | 1 +
 1 file changed, 1 insertion(+)


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diff mbox

Patch

diff --git a/drivers/media/rc/winbond-cir.c b/drivers/media/rc/winbond-cir.c
index 535a18d..87af2d3 100644
--- a/drivers/media/rc/winbond-cir.c
+++ b/drivers/media/rc/winbond-cir.c
@@ -1151,6 +1151,7 @@  exit_release_wbase:
 	release_region(data->wbase, WAKEUP_IOMEM_LEN);
 exit_unregister_device:
 	rc_unregister_device(data->dev);
+	data->dev = NULL;
 exit_free_rc:
 	rc_free_device(data->dev);
 exit_unregister_led: