Messages in this thread | | | From | Michael Buesch <> | Subject | Re: Oops when using growisofs | Date | Mon, 23 Jun 2008 00:28:20 +0200 |
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On Monday 23 June 2008 00:05:51 Michael Buesch wrote: > > Note: r9 and r3 are both NULL pointers. r3 is the value returned from alloc_page_buffers. > > R9 is a copy of that, which gets accessed. > > Hm, yeah. I looked at that code already, but I can't see how it could return > a NULL pointer.
Well, actually, it can return a NULL pointer.
928 head = NULL; 929 offset = PAGE_SIZE; 930 while ((offset -= size) >= 0) { ... 949 } 950 return head;
So if size, which is a passed in as parameter, is > PAGE_SIZE it will return NULL.
The size parameter is calculated by doing blocksize = 1 << inode->i_blkbits; in an earlier function in the callchain.
So, well. I dunno what i_blkbits is. There's no docs in struct inode.
-- Greetings Michael.
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