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| author | Marco Nelissen <marco.nelissen@gmail.com> | 2025-01-02 11:04:11 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-23 17:21:16 +0100 |
| commit | 09528bb1a4123e2a234eac2bc45a0e51e78dab43 (patch) | |
| tree | 502589675dc083056775cfe01c8cadae0b4ae17b | |
| parent | c5418187b97780749688d6133d2a43c37e46604e (diff) | |
| download | linux-09528bb1a4123e2a234eac2bc45a0e51e78dab43.tar.gz linux-09528bb1a4123e2a234eac2bc45a0e51e78dab43.tar.bz2 linux-09528bb1a4123e2a234eac2bc45a0e51e78dab43.zip | |
filemap: avoid truncating 64-bit offset to 32 bits
commit f505e6c91e7a22d10316665a86d79f84d9f0ba76 upstream.
On 32-bit kernels, folio_seek_hole_data() was inadvertently truncating a
64-bit value to 32 bits, leading to a possible infinite loop when writing
to an xfs filesystem.
Link: https://lkml.kernel.org/r/20250102190540.1356838-1-marco.nelissen@gmail.com
Fixes: 54fa39ac2e00 ("iomap: use mapping_seek_hole_data")
Signed-off-by: Marco Nelissen <marco.nelissen@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | mm/filemap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 2c308413387f..6a3d62de1cca 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3037,7 +3037,7 @@ static inline loff_t folio_seek_hole_data(struct xa_state *xas, if (ops->is_partially_uptodate(folio, offset, bsz) == seek_data) break; - start = (start + bsz) & ~(bsz - 1); + start = (start + bsz) & ~((u64)bsz - 1); offset += bsz; } while (offset < folio_size(folio)); unlock: |