6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zilin Guan zilin@seu.edu.cn
[ Upstream commit acb59a4bb8ed34e738a4c3463127bf3f6b5e11a9 ]
host_seq_bmp is allocated with vzalloc but is currently freed with bitmap_free, which uses kfree internally. This mismach prevents the resource from being released properly and may result in memory leaks or other issues.
Fix this by freeing host_seq_bmp with vfree to match the vzalloc allocation.
Fixes: f232836a9152 ("vfio/pds: Add support for dirty page tracking") Signed-off-by: Zilin Guan zilin@seu.edu.cn Reviewed-by: Brett Creeley brett.creeley@amd.com Link: https://lore.kernel.org/r/20250913153154.1028835-1-zilin@seu.edu.cn Signed-off-by: Alex Williamson alex.williamson@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/vfio/pci/pds/dirty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vfio/pci/pds/dirty.c b/drivers/vfio/pci/pds/dirty.c index 27607d7b9030a..6adc5f1ae2eb9 100644 --- a/drivers/vfio/pci/pds/dirty.c +++ b/drivers/vfio/pci/pds/dirty.c @@ -81,7 +81,7 @@ static int pds_vfio_dirty_alloc_bitmaps(struct pds_vfio_dirty *dirty,
host_ack_bmp = vzalloc(bytes); if (!host_ack_bmp) { - bitmap_free(host_seq_bmp); + vfree(host_seq_bmp); return -ENOMEM; }