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Groups > linux.kernel > #1551420

[PATCH 4.4 32/60] ext4: fix mballoc breakage with 64k block size

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4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chandan Rajendra <chandan@linux.vnet.ibm.com>

commit 69e43e8cc971a79dd1ee5d4343d8e63f82725123 upstream.

'border' variable is set to a value of 2 times the block size of the
underlying filesystem. With 64k block size, the resulting value won't
fit into a 16-bit variable. Hence this commit changes the data type of
'border' to 'unsigned int'.

Fixes: c9de560ded61f
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/mballoc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -669,7 +669,7 @@ static void ext4_mb_mark_free_simple(str
 	ext4_grpblk_t min;
 	ext4_grpblk_t max;
 	ext4_grpblk_t chunk;
-	unsigned short border;
+	unsigned int border;
 
 	BUG_ON(len > EXT4_CLUSTERS_PER_GROUP(sb));
 

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[PATCH 4.4 00/60] 4.4.40-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:30 +0100
  [PATCH 4.4 47/60] dm flakey: return -EINVAL on interval bounds error in flakey_ctr() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:30 +0100
  [PATCH 4.4 07/60] USB: serial: kl5kusb105: fix open error path Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 34/60] ext4: use more strict checks for inodes_per_block on mount Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 33/60] ext4: fix stack memory corruption with 64k block size Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 36/60] ext4: add sanity checking to count_overhead() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 30/60] ptrace: Capture the ptracers creds not PT_PTRACE_CAP Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 18/60] ALSA: hda - Gate the mic jack on HP Z1 Gen3 AiO Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 03/60] btrfs: store and load values of stripes_min/stripes_max in balance status item Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 21/60] Btrfs: fix memory leak in reading btree blocks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 06/60] USB: serial: option: add dlink dwm-158 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 05/60] USB: serial: option: add support for Telit LE922A PIDs 0x1040, 0x1041 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 08/60] USB: cdc-acm: add device id for GW Instek AFG-125 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 32/60] ext4: fix mballoc breakage with 64k block size Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 04/60] Btrfs: fix qgroup rescan worker initialization Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 09/60] usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 35/60] ext4: fix in-superblock mount options processing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:40 +0100
  [PATCH 4.4 15/60] ALSA: hda/ca0132 - Add quirk for Alienware 15 R2 2016 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:50 +0100
  [PATCH 4.4 13/60] ALSA: usb-audio: Add QuickCam Communicate Deluxe/S7500 to volume_control_quirks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-04 22:50 +0100
  Re: [PATCH 4.4 00/60] 4.4.40-stable review Shuah Khan <shuah.kh@samsung.com> - 2017-01-05 01:50 +0100
  Re: [PATCH 4.4 00/60] 4.4.40-stable review Guenter Roeck <linux@roeck-us.net> - 2017-01-05 06:30 +0100
  Re: [PATCH 4.4 00/60] 4.4.40-stable review Guillaume Nault <g.nault@alphalink.fr> - 2017-01-05 16:50 +0100
    Re: [PATCH 4.4 00/60] 4.4.40-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-05 21:40 +0100

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