Messages in this thread Patch in this message | | | Subject | [PATCH 1/2] Re: Major breakage in linux-git on x86_64, oom killer goes on rampage | From | Pavel Roskin <> | Date | Thu, 04 Aug 2005 17:01:36 -0400 |
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Hello again,
here's the solution. The x86_64 specific portion will be posted as a separate patch.
> Now the system boot goes a little further and then the kernel reports a > BUG in mm/memory.c:985. Apparently __handle_mm_fault() returns > something unexpected.
I'm getting a BUG in mm/memory.c:985. The unexpected value is 18 or VM_FAULT_MINOR|VM_FAULT_WRITE. As it turns out, __handle_mm_fault() never returns VM_FAULT_WRITE, but in combination with VM_FAULT_MINOR. Apparently, that's what was meant, and the fallthrough to case VM_FAULT_MINOR is an indication of that.
Signed-off-by: Pavel Roskin <proski@gnu.org>
diff --git a/mm/memory.c b/mm/memory.c --- a/mm/memory.c +++ b/mm/memory.c @@ -963,7 +963,7 @@ int get_user_pages(struct task_struct *t spin_unlock(&mm->page_table_lock); switch (__handle_mm_fault(mm, vma, start, write_access)) { - case VM_FAULT_WRITE: + case VM_FAULT_WRITE|VM_FAULT_MINOR: /* * do_wp_page has broken COW when * necessary, even if maybe_mkwrite -- Regards, Pavel Roskin
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