linux-kernel - [PATCH 5.7 016/120] ARM: 8987/1: VDSO: Fix incorrect clock

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Message-Id: <20200803121903.649075309@linuxfoundation.org>
Date:   Mon,  3 Aug 2020 14:17:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jaedon Shin <jaedon.shin@...il.com>,
        Robin Murphy <robin.mruphy@....com>,
        Robin Murphy <robin.murphy@....com>,
        Russell King <rmk+kernel@...linux.org.uk>
Subject: [PATCH 5.7 016/120] ARM: 8987/1: VDSO: Fix incorrect clock_gettime64

From: Jaedon Shin <jaedon.shin@...il.com>

commit 4405bdf3c57ec28d606bdf5325f1167505bfdcd4 upstream.

__vdso_*() should be removed and fallback used if CNTCVT is not
available by cntvct_functional(). __vdso_clock_gettime64 when added
previous commit is using the incorrect CNTCVT value in that state.
__vdso_clock_gettime64 is also added to remove it's symbol.

Cc: stable@...r.kernel.org
Fixes: 74d06efb9c2f ("ARM: 8932/1: Add clock_gettime64 entry point")
Signed-off-by: Jaedon Shin <jaedon.shin@...il.com>
Tested-by: Robin Murphy <robin.mruphy@....com>
Signed-off-by: Robin Murphy <robin.murphy@....com>
Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/kernel/vdso.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/kernel/vdso.c
+++ b/arch/arm/kernel/vdso.c
@@ -184,6 +184,7 @@ static void __init patch_vdso(void *ehdr
 	if (!cntvct_ok) {
 		vdso_nullpatch_one(&einfo, "__vdso_gettimeofday");
 		vdso_nullpatch_one(&einfo, "__vdso_clock_gettime");
+		vdso_nullpatch_one(&einfo, "__vdso_clock_gettime64");
 	}
 }