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drivers/rtc/rtc-spear.c: fix use-after-free in spear_rtc_remove()
`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>
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@ -458,12 +458,12 @@ static int __devexit spear_rtc_remove(struct platform_device *pdev)
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clk_disable(config->clk);
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clk_put(config->clk);
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iounmap(config->ioaddr);
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kfree(config);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (res)
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release_mem_region(res->start, resource_size(res));
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platform_set_drvdata(pdev, NULL);
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rtc_device_unregister(config->rtc);
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kfree(config);
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return 0;
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}
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