projects / linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: cc86181) | patch
iomap: Fix possible overflow condition in iomap_write_delalloc_scan
authorRitesh Harjani (IBM) <ritesh.list@gmail.com>
Mon, 10 Jul 2023 21:12:22 +0000 (14:12 -0700)
committerRitesh Harjani (IBM) <ritesh.list@gmail.com>
Tue, 25 Jul 2023 05:25:55 +0000 (10:55 +0530)
commiteee2d2e6ea5550118170dbd5bb1316ceb38455fb
tree76507a749a9fc86e2970548f726509cb9642e253tree | snapshot
parentcc86181a3b7605f394182cdc38b6a87632511a88commit | diff
iomap: Fix possible overflow condition in iomap_write_delalloc_scan

folio_next_index() returns an unsigned long value which left shifted
by PAGE_SHIFT could possibly cause an overflow on 32-bit system. Instead
use folio_pos(folio) + folio_size(folio), which does this correctly.

Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
fs/iomap/buffered-io.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git