From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH] xfs: fix uninitialised variable in xfs_rtbuf_get()
Date: Tue, 31 Jul 2012 14:55:51 +1000 [thread overview]
Message-ID: <1343710551-24998-1-git-send-email-david@fromorbit.com> (raw)
From: Dave Chinner <dchinner@redhat.com>
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>
---
fs/xfs/xfs_rtalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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;
--
1.7.10
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next reply other threads:[~2012-07-31 4:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-31 4:55 Dave Chinner [this message]
2012-08-16 16:42 ` [PATCH] xfs: fix uninitialised variable in xfs_rtbuf_get() Ben Myers
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