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| author | Chandra Seetharaman | 2011-08-03 04:18:29 +0200 |
|---|---|---|
| committer | Alex Elder | 2011-08-12 20:39:29 +0200 |
| commit | ac4d6888b21a8be373f3e06f1d4011fbe2bbbeac (patch) | |
| tree | 6a39e3be9bcf99cddc0ce0b0ed15aac794b527f8 /fs/xfs/xfs_vnodeops.c | |
| parent | "xfs: fix error handling for synchronous writes" revisited (diff) | |
| download | kernel-qcow2-linux-ac4d6888b21a8be373f3e06f1d4011fbe2bbbeac.tar.gz kernel-qcow2-linux-ac4d6888b21a8be373f3e06f1d4011fbe2bbbeac.tar.xz kernel-qcow2-linux-ac4d6888b21a8be373f3e06f1d4011fbe2bbbeac.zip | |
xfs: Check the return value of xfs_buf_read() for NULL
Check the return value of xfs_buf_read() for NULL and return ENOMEM
if it is NULL. This is necessary in a few spots to avoid subsequent
code blindly dereferencing the null buffer pointer.
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_vnodeops.c')
| -rw-r--r-- | fs/xfs/xfs_vnodeops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index dd05360ad56f..2a432d00d4c1 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -83,6 +83,8 @@ xfs_readlink_bmap( bp = xfs_buf_read(mp->m_ddev_targp, d, BTOBB(byte_cnt), XBF_LOCK | XBF_MAPPED | XBF_DONT_BLOCK); + if (!bp) + return XFS_ERROR(ENOMEM); error = xfs_buf_geterror(bp); if (error) { xfs_ioerror_alert("xfs_readlink", |