The patch titled Subject: filemap: avoid truncating 64-bit offset to 32 bits has been added to the -mm mm-hotfixes-unstable branch. Its filename is filemap-avoid-truncating-64-bit-offset-to-32-bits.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: Marco Nelissen marco.nelissen@gmail.com Subject: filemap: avoid truncating 64-bit offset to 32 bits Date: Thu, 2 Jan 2025 11:04:11 -0800
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: 54fa39ac2e00b ("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 ---
mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/filemap.c~filemap-avoid-truncating-64-bit-offset-to-32-bits +++ a/mm/filemap.c @@ -2996,7 +2996,7 @@ static inline loff_t folio_seek_hole_dat 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: _
Patches currently in -mm which might be from marco.nelissen@gmail.com are
filemap-avoid-truncating-64-bit-offset-to-32-bits.patch