Messages in this thread | | | Date | Thu, 13 Jan 2022 13:26:48 -0800 | Subject | Re: linux-next: Tree for Jan 13 (UBSAN: invalid-load in ../mm/swap.c:996:11) | From | Randy Dunlap <> |
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On 1/13/22 12:47, Matthew Wilcox wrote: > On Thu, Jan 13, 2022 at 12:12:52PM -0800, Randy Dunlap wrote: >> [ 1.561983] UBSAN: invalid-load in ../mm/swap.c:996:11 >> [ 1.561986] load of value 221 is not a valid value for type '_Bool' > > Ooh. This one's mine. Randy, does it repeat easily? This should > fix it:
Yes, 100% of the time (for N = 3).
Reported-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
Fixed 100% of the time (for N = 3).
Thanks.
> diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h > index dda8d5868c81..67b1246f136b 100644 > --- a/include/linux/pagevec.h > +++ b/include/linux/pagevec.h > @@ -111,6 +111,7 @@ static_assert(offsetof(struct pagevec, pages) == > static inline void folio_batch_init(struct folio_batch *fbatch) > { > fbatch->nr = 0; > + fbatch->percpu_pvec_drained = false; > } > > static inline unsigned int folio_batch_count(struct folio_batch *fbatch) >
-- ~Randy
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