Messages in this thread Patch in this message | | | From | "Matthew Wilcox (Oracle)" <> | Subject | [PATCH 6/7] btrfs: Promote to unsigned long long before shifting | Date | Sun, 4 Oct 2020 19:04:27 +0100 |
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On 32-bit systems, this shift will overflow for files larger than 4GB.
Cc: stable@vger.kernel.org Fixes: 53b381b3abeb ("Btrfs: RAID5 and RAID6") Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- fs/btrfs/raid56.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 255490f42b5d..5ee0a53301bd 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -1089,7 +1089,7 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, u64 disk_start; stripe = &rbio->bbio->stripes[stripe_nr]; - disk_start = stripe->physical + (page_index << PAGE_SHIFT); + disk_start = stripe->physical + ((loff_t)page_index << PAGE_SHIFT); /* if the device is missing, just fail this stripe */ if (!stripe->dev->bdev) -- 2.28.0
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