Messages in this thread |  | | Subject | Re: [PATCH] x86 page fault handler not interrupt safe | Date | Mon, 7 May 2001 22:37:10 +0100 (BST) | From | Alan Cox <> |
| |
> If anybody has such a beast, please try this kernel patch _and_ running > the F0 0F bug-producing program (search for it on the 'net - it must be
One apparent problem with this implementation
> + * > + * This verifies that the fault happens in kernel space > + * (error_code & 4) == 0, and that the fault was not a > + * protection error (error_code & 1) == 0. > */ > - if (address >= TASK_SIZE) > + if (address >= TASK_SIZE && !(error_code & 5)) > goto vmalloc_fault;
address might be from the following vmalloc fault. The error code would indicate user space, so we would do a bogus user space fix up for vmalloc space, fault and die.
- 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/
|  |