From: Oleksii Moisieiev Date: Tue, 20 Dec 2022 14:50:13 +0000 (+0000) Subject: xen/pvcalls: free active map buffer on pvcalls_front_free_map X-Git-Tag: v6.6.17~5771^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f57034cedeb6e00256313a2a6ee67f974d709b0b;p=platform%2Fkernel%2Flinux-rpi.git xen/pvcalls: free active map buffer on pvcalls_front_free_map Data buffer for active map is allocated in alloc_active_ring and freed in free_active_ring function, which is used only for the error cleanup. pvcalls_front_release is calling pvcalls_front_free_map which ends foreign access for this buffer, but doesn't free allocated pages. Call free_active_ring to clean all allocated resources. Signed-off-by: Oleksii Moisieiev Reviewed-by: Stefano Stabellini Link: https://lore.kernel.org/r/6a762ee32dd655cbb09a4aa0e2307e8919761311.1671531297.git.oleksii_moisieiev@epam.com Signed-off-by: Juergen Gross --- diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c index 5328f4d..d5d589b 100644 --- a/drivers/xen/pvcalls-front.c +++ b/drivers/xen/pvcalls-front.c @@ -225,6 +225,8 @@ again: return IRQ_HANDLED; } +static void free_active_ring(struct sock_mapping *map); + static void pvcalls_front_free_map(struct pvcalls_bedata *bedata, struct sock_mapping *map) { @@ -240,7 +242,7 @@ static void pvcalls_front_free_map(struct pvcalls_bedata *bedata, for (i = 0; i < (1 << PVCALLS_RING_ORDER); i++) gnttab_end_foreign_access(map->active.ring->ref[i], NULL); gnttab_end_foreign_access(map->active.ref, NULL); - free_page((unsigned long)map->active.ring); + free_active_ring(map); kfree(map); }