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drivers/rtc/rtc-spear.c: fix use-after-free in spear_rtc_remove()

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`config' is freed and is then used in the rtc_device_unregister() call,
causing a kernel panic.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Reviewed-by: Viresh Kumar <viresh.linux@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Devendra Naga 2012-07-11 14:01:53 -07:00 • committed by Linus Torvalds
parent d8adde17e5
commit 2a643893e5
1 changed files with 1 additions and 1 deletions
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2
drivers/rtc/rtc-spear.c
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@ -458,12 +458,12 @@ static int __devexit spear_rtc_remove(struct platform_device *pdev)
clk_disable(config->clk); clk_disable(config->clk);
clk_put(config->clk); clk_put(config->clk);
iounmap(config->ioaddr); iounmap(config->ioaddr);
kfree(config);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res) if (res)
release_mem_region(res->start, resource_size(res)); release_mem_region(res->start, resource_size(res));
platform_set_drvdata(pdev, NULL); platform_set_drvdata(pdev, NULL);
rtc_device_unregister(config->rtc); rtc_device_unregister(config->rtc);
kfree(config);
return 0; return 0;
} }