From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Wed, 5 Feb 2025 08:45:52 +0000 (+0100)
Subject: 6.1-stable patches
X-Git-Tag: v6.6.76~18
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d40a74a0dcc38d556ee4d3c70d3223ce1349a602;p=thirdparty%2Fkernel%2Fstable-queue.git

6.1-stable patches

added patches:
	ptp-properly-handle-compat-ioctls.patch
---

diff --git a/queue-6.1/ptp-properly-handle-compat-ioctls.patch b/queue-6.1/ptp-properly-handle-compat-ioctls.patch
new file mode 100644
index 0000000000..73cb12b492
--- /dev/null
+++ b/queue-6.1/ptp-properly-handle-compat-ioctls.patch
@@ -0,0 +1,52 @@
+From 8c29a76b76bb089095af8d29efec226a005274ca Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Sat, 25 Jan 2025 10:28:38 +0100
+Subject: ptp: Properly handle compat ioctls
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Thomas Weißschuh <linux@weissschuh.net>
+
+[ Upstream commit 19ae40f572a9ce1ade9954990af709a03fd37010 ]
+
+Pointer arguments passed to ioctls need to pass through compat_ptr() to
+work correctly on s390; as explained in Documentation/driver-api/ioctl.rst.
+Detect compat mode at runtime and call compat_ptr() for those commands
+which do take pointer arguments.
+
+Suggested-by: Arnd Bergmann <arnd@arndb.de>
+Link: https://lore.kernel.org/lkml/1ba5d3a4-7931-455b-a3ce-85a968a7cb10@app.fastmail.com/
+Fixes: d94ba80ebbea ("ptp: Added a brand new class driver for ptp clocks.")
+Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
+Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
+Reviewed-by: Arnd Bergmann <arnd@arndb.de>
+Acked-by: Richard Cochran <richardcochran@gmail.com>
+Link: https://patch.msgid.link/20250125-posix-clock-compat_ioctl-v2-1-11c865c500eb@weissschuh.net
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/ptp/ptp_chardev.c |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/ptp/ptp_chardev.c
++++ b/drivers/ptp/ptp_chardev.c
+@@ -4,6 +4,7 @@
+  *
+  * Copyright (C) 2010 OMICRON electronics GmbH
+  */
++#include <linux/compat.h>
+ #include <linux/module.h>
+ #include <linux/posix-clock.h>
+ #include <linux/poll.h>
+@@ -124,6 +125,9 @@ long ptp_ioctl(struct posix_clock *pc, u
+ 	struct timespec64 ts;
+ 	int enable, err = 0;
+ 
++	if (in_compat_syscall() && cmd != PTP_ENABLE_PPS && cmd != PTP_ENABLE_PPS2)
++		arg = (unsigned long)compat_ptr(arg);
++
+ 	switch (cmd) {
+ 
+ 	case PTP_CLOCK_GETCAPS:
diff --git a/queue-6.1/series b/queue-6.1/series
index e65b9f269b..82b24c0e81 100644
--- a/queue-6.1/series
+++ b/queue-6.1/series
@@ -277,3 +277,4 @@ usb-gadget-f_tcm-don-t-free-command-immediately.patch
 staging-media-max96712-fix-kernel-oops-when-removing-module.patch
 media-imx-jpeg-fix-potential-error-pointer-dereference-in-detach_pm.patch
 btrfs-output-the-reason-for-open_ctree-failure.patch
+ptp-properly-handle-compat-ioctls.patch