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authorDave Chinner <dchinner@redhat.com>2012-07-31 14:55:51 +1000
committerBen Myers <bpm@sgi.com>2012-08-16 12:53:12 -0500
commita76cccbeef9e91b5f799e8853acac1ed1fc833cb (patch)
tree126eaa8bfb05cca9107b4a55f13e67ddb5bb5c0d /fs
parent0d7614f09c1ebdbaa1599a5aba7593f147bf96ee (diff)
downloadop-kernel-dev-a76cccbeef9e91b5f799e8853acac1ed1fc833cb.zip
op-kernel-dev-a76cccbeef9e91b5f799e8853acac1ed1fc833cb.tar.gz
xfs: fix uninitialised variable in xfs_rtbuf_get()
Results in this assert failure in generic/090: XFS: Assertion failed: *nmap >= 1, file: fs/xfs/xfs_bmap.c, line: 4363 ..... Call Trace: [<ffffffff814680db>] xfs_bmapi_read+0x6b/0x370 [<ffffffff814b64b2>] xfs_rtbuf_get+0x42/0x130 [<ffffffff814b6f09>] xfs_rtget_summary+0x89/0x120 [<ffffffff814b7bfe>] xfs_rtallocate_extent_size+0xce/0x340 [<ffffffff814b89f0>] xfs_rtallocate_extent+0x240/0x290 [<ffffffff81462c1a>] xfs_bmap_rtalloc+0x1ba/0x340 [<ffffffff81463a65>] xfs_bmap_alloc+0x35/0x40 [<ffffffff8146f111>] xfs_bmapi_allocate+0xf1/0x350 [<ffffffff8146f9de>] xfs_bmapi_write+0x66e/0xa60 [<ffffffff8144538a>] xfs_iomap_write_direct+0x22a/0x3f0 [<ffffffff8143707b>] __xfs_get_blocks+0x38b/0x5d0 [<ffffffff814372d4>] xfs_get_blocks_direct+0x14/0x20 [<ffffffff811b0081>] do_blockdev_direct_IO+0xf71/0x1eb0 [<ffffffff811b1015>] __blockdev_direct_IO+0x55/0x60 [<ffffffff814355ca>] xfs_vm_direct_IO+0x11a/0x1e0 [<ffffffff8112d617>] generic_file_direct_write+0xd7/0x1b0 [<ffffffff8143e16c>] xfs_file_dio_aio_write+0x13c/0x320 [<ffffffff8143e6f2>] xfs_file_aio_write+0x1c2/0x1d0 [<ffffffff81174a07>] do_sync_write+0xa7/0xe0 [<ffffffff81175288>] vfs_write+0xa8/0x160 [<ffffffff81175702>] sys_pwrite64+0x92/0xb0 [<ffffffff81b68f69>] system_call_fastpath+0x16/0x1b Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_rtalloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 92d4331..ca28a4b 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -857,7 +857,7 @@ xfs_rtbuf_get(
xfs_buf_t *bp; /* block buffer, result */
xfs_inode_t *ip; /* bitmap or summary inode */
xfs_bmbt_irec_t map;
- int nmap;
+ int nmap = 1;
int error; /* error value */
ip = issum ? mp->m_rsumip : mp->m_rbmip;
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