Re: [syzbot] [trace?] WARNING in bitmap_parse_user
From: Edward Adam Davis
Date: Mon Dec 16 2024 - 07:29:17 EST
#syz test
diff --git a/mm/util.c b/mm/util.c
index c1c3b06ab4f9..1845d649b171 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -302,7 +302,7 @@ void *memdup_user_nul(const void __user *src, size_t len)
* cause pagefault, which makes it pointless to use GFP_NOFS
* or GFP_ATOMIC.
*/
- p = kmalloc_track_caller(len + 1, GFP_KERNEL);
+ p = kmalloc_track_caller(len + 1, GFP_KERNEL | __GFP_NOWARN);
if (!p)
return ERR_PTR(-ENOMEM);