1 files changed, 46 insertions, 0 deletions
diff --git a/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers/0001-linser-vboxsf-Adjustment-for-linux-5.10-TASK_SIZE_MA.patch b/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers/0001-linser-vboxsf-Adjustment-for-linux-5.10-TASK_SIZE_MA.patch
new file mode 100644
index 0000000000..3cfe2e917c
--- /dev/null
+++ b/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers/0001-linser-vboxsf-Adjustment-for-linux-5.10-TASK_SIZE_MA.patch
@@ -0,0 +1,46 @@
+From a276f8bc5e4515f7ea51e2c56e0e634a723ca104 Mon Sep 17 00:00:00 2001
+From: vboxsync <vboxsync@cfe28804-0f27-0410-a406-dd0f0b0b656f>
+Date: Tue, 8 Dec 2020 13:52:53 +0000
+Subject: [PATCH] linser/vboxsf: Adjustment for linux 5.10 - TASK_SIZE_MAX
+ replaces USER_DS.seg. bugref:9879
+
+Upstream-Status: Backport
+
+git-svn-id: http://www.virtualbox.org/svn/vbox@87053 cfe28804-0f27-0410-a406-dd0f0b0b656f
+
+Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
+---
+ src/VBox/Additions/linux/sharedfolders/regops.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/src/VBox/Additions/linux/sharedfolders/regops.c b/src/VBox/Additions/linux/sharedfolders/regops.c
+index e1fad3d820..401fd69930 100644
+--- a/src/VBox/Additions/linux/sharedfolders/regops.c
++++ b/src/VBox/Additions/linux/sharedfolders/regops.c
+@@ -147,7 +147,11 @@ static int vbsf_iov_iter_detect_type(struct iovec const *paIov, size_t cSegs)
+     while (cSegs-- > 0) {
+         if (paIov->iov_len > 0) {
+             if (access_ok(VERIFY_READ, paIov->iov_base, paIov->iov_len))
++#if RTLNX_VER_MIN(5,10,0)
++                return (uintptr_t)paIov->iov_base >= TASK_SIZE_MAX ? ITER_KVEC : 0;
++#else
+                 return (uintptr_t)paIov->iov_base >= USER_DS.seg ? ITER_KVEC : 0;
++#endif
+             AssertMsgFailed(("%p LB %#zx\n", paIov->iov_base, paIov->iov_len));
+             break;
+         }
+@@ -1401,7 +1405,10 @@ static int vbsf_lock_user_pages_failed_check_kernel(uintptr_t uPtrFrom, size_t c
+     /*
+      * Check that this is valid user memory that is actually in the kernel range.
+      */
+-#if RTLNX_VER_MIN(5,0,0) || RTLNX_RHEL_MIN(8,1)
++#if RTLNX_VER_MIN(5,10,0)
++    if (   access_ok((void *)uPtrFrom, cPages << PAGE_SHIFT)
++        && uPtrFrom >= TASK_SIZE_MAX)
++#elif RTLNX_VER_MIN(5,0,0) || RTLNX_RHEL_MIN(8,1)
+     if (   access_ok((void *)uPtrFrom, cPages << PAGE_SHIFT)
+         && uPtrFrom >= USER_DS.seg)
+ #else
+-- 
+2.19.1
+