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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-25 11:23:27 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-25 11:23:27 +0100
commit1d6a81519d9d27b99bca638d14eca63c31111afd (patch)
tree8063d42442b46bac5e3defa59de277fecc524ad6 /arch/arm64/mm/fault.c
parent386ce1d748edfdf57f21310647e2d42dd5f737f2 (diff)
parent6ee1d745b7c9fd573fba142a2efdad76a9f1cb04 (diff)
Merge v5.11-rc5 into usb-next
We need the fixes in here and this resolves a merge issue with drivers/usb/gadget/udc/bdc/Kconfig. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/mm/fault.c')
-rw-r--r--arch/arm64/mm/fault.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 3c40da479899..35d75c60e2b8 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -709,10 +709,11 @@ static int do_tag_check_fault(unsigned long far, unsigned int esr,
struct pt_regs *regs)
{
/*
- * The architecture specifies that bits 63:60 of FAR_EL1 are UNKNOWN for tag
- * check faults. Mask them out now so that userspace doesn't see them.
+ * The architecture specifies that bits 63:60 of FAR_EL1 are UNKNOWN
+ * for tag check faults. Set them to corresponding bits in the untagged
+ * address.
*/
- far &= (1UL << 60) - 1;
+ far = (__untagged_addr(far) & ~MTE_TAG_MASK) | (far & MTE_TAG_MASK);
do_bad_area(far, esr, regs);
return 0;
}