From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sun, 27 Oct 2019 13:55:05 +0000 (+0100)
Subject: 4.9-stable patches
X-Git-Tag: v4.4.198~16
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b08c41be61e77f91ed62d095ca1f5923d69b244c;p=thirdparty%2Fkernel%2Fstable-queue.git

4.9-stable patches

added patches:
	parisc-fix-vmap-memory-leak-in-ioremap-iounmap.patch
---

diff --git a/queue-4.9/parisc-fix-vmap-memory-leak-in-ioremap-iounmap.patch b/queue-4.9/parisc-fix-vmap-memory-leak-in-ioremap-iounmap.patch
new file mode 100644
index 00000000000..611ee77b68a
--- /dev/null
+++ b/queue-4.9/parisc-fix-vmap-memory-leak-in-ioremap-iounmap.patch
@@ -0,0 +1,60 @@
+From 513f7f747e1cba81f28a436911fba0b485878ebd Mon Sep 17 00:00:00 2001
+From: Helge Deller <deller@gmx.de>
+Date: Fri, 4 Oct 2019 19:23:37 +0200
+Subject: parisc: Fix vmap memory leak in ioremap()/iounmap()
+
+From: Helge Deller <deller@gmx.de>
+
+commit 513f7f747e1cba81f28a436911fba0b485878ebd upstream.
+
+Sven noticed that calling ioremap() and iounmap() multiple times leads
+to a vmap memory leak:
+	vmap allocation for size 4198400 failed:
+	use vmalloc=<size> to increase size
+
+It seems we missed calling vunmap() in iounmap().
+
+Signed-off-by: Helge Deller <deller@gmx.de>
+Noticed-by: Sven Schnelle <svens@stackframe.org>
+Cc: <stable@vger.kernel.org> # v3.16+
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/parisc/mm/ioremap.c |   12 +++++++-----
+ 1 file changed, 7 insertions(+), 5 deletions(-)
+
+--- a/arch/parisc/mm/ioremap.c
++++ b/arch/parisc/mm/ioremap.c
+@@ -2,7 +2,7 @@
+  * arch/parisc/mm/ioremap.c
+  *
+  * (C) Copyright 1995 1996 Linus Torvalds
+- * (C) Copyright 2001-2006 Helge Deller <deller@gmx.de>
++ * (C) Copyright 2001-2019 Helge Deller <deller@gmx.de>
+  * (C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org>
+  */
+ 
+@@ -83,7 +83,7 @@ void __iomem * __ioremap(unsigned long p
+ 	addr = (void __iomem *) area->addr;
+ 	if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
+ 			       phys_addr, pgprot)) {
+-		vfree(addr);
++		vunmap(addr);
+ 		return NULL;
+ 	}
+ 
+@@ -91,9 +91,11 @@ void __iomem * __ioremap(unsigned long p
+ }
+ EXPORT_SYMBOL(__ioremap);
+ 
+-void iounmap(const volatile void __iomem *addr)
++void iounmap(const volatile void __iomem *io_addr)
+ {
+-	if (addr > high_memory)
+-		return vfree((void *) (PAGE_MASK & (unsigned long __force) addr));
++	unsigned long addr = (unsigned long)io_addr & PAGE_MASK;
++
++	if (is_vmalloc_addr((void *)addr))
++		vunmap((void *)addr);
+ }
+ EXPORT_SYMBOL(iounmap);
diff --git a/queue-4.9/series b/queue-4.9/series
index 75ae39bb230..62cccec265a 100644
--- a/queue-4.9/series
+++ b/queue-4.9/series
@@ -38,3 +38,4 @@ drm-edid-add-6-bpc-quirk-for-sdc-panel-in-lenovo-g50.patch
 scsi-zfcp-fix-reaction-on-bit-error-threshold-notifi.patch
 mm-slub-fix-a-deadlock-in-show_slab_objects.patch
 xtensa-drop-export_symbol-for-outs-ins.patch
+parisc-fix-vmap-memory-leak-in-ioremap-iounmap.patch