Messages in this thread | | | Date | Mon, 17 Apr 2006 15:03:07 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH][urgent fix] swsusp: prevent possible image corruption on resume |
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Hi!
> The function free_pagedir() used by swsusp for freeing its internal data > structures clears the PG_nosave and PG_nosave_free flags for each page being > freed. However, during resume PG_nosave_free set means that the page > in question is "unsafe" (ie. it will be overwritten in the process of restoring the > saved system state from the image), so it should not be used for the image > data. Therefore free_pagedir() should not clear PG_nosave_free if it's > called during resume (otherwise "unsafe" pages freed by it may be used for > storing the image data and the data may get corrupted later on).
Okay with me. Pavel
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