Hello,
Smatch complains about a possible freed pointer deref introduced by:
4b46fce2334 "Btrfs: add basic DIO read/write support". Could you take a
look?
fs/btrfs/inode.c +5716 btrfs_submit_direct(79)
5705 out_err:
5706 kfree(dip->csums);
5707 kfree(dip);
^^^^^^^^^^^
dip is freed here.
5708 free_ordered:
5709 /*
5710 * If this is a write, we need to clean up the reserved space and kill
5711 * the ordered extent.
5712 */
5713 if (write) {
5714 struct btrfs_ordered_extent *ordered;
5715 ordered = btrfs_lookup_ordered_extent(inode,
5716 dip->logical_offset);
^^^^^^^^^^^^^^^^^^^
dereferenced here. Actually, dip could also be null here if the
kmalloc failed()
regards,
dan carpenter
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