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| author | Peng Tao <bergwolf@gmail.com> | 2011-09-22 21:50:16 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-10-18 09:08:14 -0700 |
| commit | e6d05a757c314ad88d0649d3835a8a1daa964236 (patch) | |
| tree | f900bf7912f5eb2546769f19fdfacccbc36e6b59 | |
| parent | 9b7eecdcfeb943f130d86bbc249fde4994b6fe30 (diff) | |
| download | linux-3.10-e6d05a757c314ad88d0649d3835a8a1daa964236.tar.gz linux-3.10-e6d05a757c314ad88d0649d3835a8a1daa964236.tar.bz2 linux-3.10-e6d05a757c314ad88d0649d3835a8a1daa964236.zip | |
pnfsblock: fix NULL pointer dereference
bl_add_page_to_bio returns error pointer. bio should be reset to
NULL in failure cases as the out path always calls bl_submit_bio.
Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Cc: stable@kernel.org [3.0]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/blocklayout/blocklayout.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 2167ba2afdb..4ddbfbf1c3a 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -292,6 +292,7 @@ bl_read_pagelist(struct nfs_read_data *rdata) bl_end_io_read, par); if (IS_ERR(bio)) { rdata->pnfs_error = PTR_ERR(bio); + bio = NULL; goto out; } } @@ -581,6 +582,7 @@ fill_invalid_ext: bl_end_io_write_zero, par); if (IS_ERR(bio)) { wdata->pnfs_error = PTR_ERR(bio); + bio = NULL; goto out; } /* FIXME: This should be done in bi_end_io */ @@ -629,6 +631,7 @@ next_page: bl_end_io_write, par); if (IS_ERR(bio)) { wdata->pnfs_error = PTR_ERR(bio); + bio = NULL; goto out; } isect += PAGE_CACHE_SECTORS; |