https://github.com/torvalds/linux
Revision b5916c025432b7c776b6bb13617485fbc0bd3ebd authored by Aneesh Kumar K.V on 29 July 2021, 21:53:47 UTC, committed by Linus Torvalds on 30 July 2021, 17:14:39 UTC
Similar to commit 2da9f6305f30 ("mm/vmscan: fix NR_ISOLATED_FILE
corruption on 64-bit") avoid using unsigned int for nr_pages.  With
unsigned int type the large unsigned int converts to a large positive
signed long.

Symptoms include CMA allocations hanging forever due to
alloc_contig_range->...->isolate_migratepages_block waiting forever in
"while (unlikely(too_many_isolated(pgdat)))".

Link: https://lkml.kernel.org/r/20210728042531.359409-1-aneesh.kumar@linux.ibm.com
Fixes: c5fc5c3ae0c8 ("mm: migrate: account THP NUMA migration counters correctly")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 30def93
History
Tip revision: b5916c025432b7c776b6bb13617485fbc0bd3ebd authored by Aneesh Kumar K.V on 29 July 2021, 21:53:47 UTC
mm/migrate: fix NR_ISOLATED corruption on 64-bit
Tip revision: b5916c0
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