Messages in this thread Patch in this message | | | Subject | [PATCH] do_wp_page: BUG on invalid pfn | From | Ed L Cashin <> | Date | Fri, 15 Aug 2003 17:15:45 -0400 |
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Rusty Russell <rusty@rustcorp.com.au> writes:
> In message <87d6fixvpm.fsf@uga.edu> you write: >> This patch just does what the comment says should be done. > > Hi Ed! > > Not trivial I'm afraid. Send to Linus and lkml.
This patch just does what the comment says should be done. I thought it was a trivial patch, but Rusty Russell has informed me otherwise. (Thanks, RR).
--- linux-2.6.0-test2/mm/memory.c.orig Sun Jul 27 13:01:24 2003 +++ linux-2.6.0-test2/mm/memory.c Wed Aug 6 18:30:55 2003 @@ -990,15 +990,10 @@ int ret; if (unlikely(!pfn_valid(pfn))) { - /* - * This should really halt the system so it can be debugged or - * at least the kernel stops what it's doing before it corrupts - * data, but for the moment just pretend this is OOM. - */ - pte_unmap(page_table); printk(KERN_ERR "do_wp_page: bogus page at address %08lx\n", address); - goto oom; + dump_stack(); + BUG(); } old_page = pfn_to_page(pfn); @@ -1054,7 +1049,6 @@ no_mem: page_cache_release(old_page); -oom: ret = VM_FAULT_OOM; out: spin_unlock(&mm->page_table_lock); -- --Ed L Cashin | PGP public key: ecashin@uga.edu | http://noserose.net/e/pgp/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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