On 24.04.24 21:45, Felix Kuehling wrote:
Sorry for top-posting. I'm resurrecting an old thread here because I
think I ran into the same problem with this assertion failing on Linux 6.7:
static inline struct page *pfn_swap_entry_to_page(swp_entry_t entry)
{
struct page *p = pfn_to_page(swp_offset_pfn(entry));
/*
* Any use of migration entries may only occur while the
* corresponding page is locked
*/
--> BUG_ON(is_migration_entry(entry) && !PageLocked(p));
return p;
}
It looks like this thread just fizzled two years ago. Did anything ever
come of this?
Maybe I should add that I saw this in a pre-silicon test environment.
I've never seen this on real hardware. Maybe something timing-sensitive.
In the past, it indicated a swp pte corruption, that would e.g., mess up
the stored PFN ot the swap entry type.
On which call chain do you see that?
--
Cheers,
David / dhildenb
