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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Nicolai Stange <nicstange@gmail.com>,
	Christian Lamparter <chunkeey@gmail.com>
Subject: [PATCH 4.7 07/45] b43: fix debugfs crash
Date: Fri, 21 Oct 2016 11:17:27 +0200	[thread overview]
Message-ID: <20161021091427.618946573@linuxfoundation.org> (raw)
In-Reply-To: <20161021091427.214431885@linuxfoundation.org>

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

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

From: Christian Lamparter <chunkeey@googlemail.com>

commit 51b275a6fe5601834b717351d6cbdb89bd1f308b upstream.

This patch fixes a crash that happens because b43's
debugfs code expects file->f_op to be a pointer to
its own b43_debugfs_fops struct. This is no longer
the case since commit 9fd4dcece43a
("debugfs: prevent access to possibly dead file_operations at file open")

Reviewed-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/broadcom/b43/debugfs.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/broadcom/b43/debugfs.c
+++ b/drivers/net/wireless/broadcom/b43/debugfs.c
@@ -524,7 +524,8 @@ static ssize_t b43_debugfs_read(struct f
 		goto out_unlock;
 	}
 
-	dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
+	dfops = container_of(debugfs_real_fops(file),
+			     struct b43_debugfs_fops, fops);
 	if (!dfops->read) {
 		err = -ENOSYS;
 		goto out_unlock;
@@ -585,7 +586,8 @@ static ssize_t b43_debugfs_write(struct
 		goto out_unlock;
 	}
 
-	dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
+	dfops = container_of(debugfs_real_fops(file),
+			     struct b43_debugfs_fops, fops);
 	if (!dfops->write) {
 		err = -ENOSYS;
 		goto out_unlock;

  parent reply	other threads:[~2016-10-21  9:19 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20161021092031uscas1p23c708f6b57321ddde439826eb68aa2f9@uscas1p2.samsung.com>
2016-10-21  9:17 ` [PATCH 4.7 00/45] 4.7.10-stable review Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 02/45] serial: 8250_dw: Check the data->pclk when get apb_pclk Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 03/45] serial: 8250_port: fix runtime PM use in __do_stop_tx_rs485() Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 04/45] ARCv2: intc: Use kflag if STATUS32.IE must be reset Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 05/45] ARCv2: fix local_save_flags Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 06/45] debugfs: introduce a public file_operations accessor Greg Kroah-Hartman
2016-10-21  9:17   ` Greg Kroah-Hartman [this message]
2016-10-21  9:17   ` [PATCH 4.7 08/45] b43legacy: fix debugfs crash Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 09/45] carl9170: fix debugfs crashes Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 12/45] btrfs: assign error values to the correct bio structs Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 13/45] mei: amthif: fix deadlock in initialization during a reset Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 14/45] drivers: base: dma-mapping: page align the size when unmap_kernel_range Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 15/45] IB/hfi1: Fix defered ack race with qp destroy Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 16/45] clk: mvebu: fix setting unwanted flags in CP110 gate clock Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 17/45] clk: mvebu: dynamically allocate resources in Armada CP110 system controller Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 18/45] fuse: listxattr: verify xattr list Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 20/45] fuse: fix killing s[ug]id in setattr Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 21/45] i40e: avoid NULL pointer dereference and recursive errors on early PCI error Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 22/45] xfs: change mailing list address Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 23/45] brcmfmac: fix pmksa->bssid usage Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 26/45] ASoC: Intel: Atom: add a missing star in a memcpy call Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 27/45] reiserfs: Unlock superblock before calling reiserfs_quota_on_mount() Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 28/45] async_pq_val: fix DMA memory leak Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 29/45] scsi: arcmsr: Buffer overflow in arcmsr_iop_message_xfer() Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 30/45] scsi: arcmsr: Simplify user_len checking Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 31/45] scsi: ibmvfc: Fix I/O hang when port is not mapped Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 32/45] vfs,mm: fix a dead loop in truncate_inode_pages_range() Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 33/45] ext4: enforce online defrag restriction for encrypted files Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 34/45] ext4: reinforce check of i_dtime when clearing high fields of uid and gid Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 36/45] ext4: fix memory leak in ext4_insert_range() Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 37/45] ext4: allow DAX writeback for hole punch Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 38/45] ext4: release bh in make_indexed_dir Greg Kroah-Hartman
2016-10-21  9:17   ` [PATCH 4.7 39/45] ext4: unmap metadata when zeroing blocks Greg Kroah-Hartman
2016-10-21  9:18   ` [PATCH 4.7 40/45] crypto: ghash-generic - move common definitions to a new header file Greg Kroah-Hartman
2016-10-21  9:18   ` [PATCH 4.7 41/45] crypto: vmx - Fix memory corruption caused by p8_ghash Greg Kroah-Hartman
2016-10-21  9:18   ` [PATCH 4.7 42/45] dlm: free workqueues after the connections Greg Kroah-Hartman
2016-10-21  9:18   ` [PATCH 4.7 43/45] vfs: move permission checking into notify_change() for utimes(NULL) Greg Kroah-Hartman
2016-10-21  9:18   ` [PATCH 4.7 44/45] cachefiles: Fix attempt to read i_blocks after deleting file [ver #2] Greg Kroah-Hartman
2016-10-21  9:18   ` [PATCH 4.7 45/45] cfq: fix starvation of asynchronous writes Greg Kroah-Hartman
2016-10-21  9:18     ` Greg Kroah-Hartman
2016-10-21 15:45   ` [PATCH 4.7 00/45] 4.7.10-stable review Shuah Khan
2016-10-21 19:17   ` Guenter Roeck
     [not found]   ` <580a133b.43921c0a.263d9.400c@mx.google.com>
     [not found]     ` <7hy41h1px6.fsf@baylibre.com>
2016-10-22  9:56       ` Greg Kroah-Hartman

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