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staging/lustre/llite: protect from accessing NULL lli_clob

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Need to check file's lli_clob object before calling
lov_read_and_clear_async_rc().

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Reviewed-on: http://review.whamcloud.com/23031
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8682
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bobi Jam 2016-11-02 21:25:00 -04:00 committed by Greg Kroah-Hartman
parent a08a07c39d
commit 028f78a9b8
1 changed files with 5 additions and 3 deletions
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8
drivers/staging/lustre/lustre/llite/file.c
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@ -2328,9 +2328,11 @@ int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync)
lli->lli_async_rc = 0;
if (rc == 0)
rc = err;
err = lov_read_and_clear_async_rc(lli->lli_clob);
if (rc == 0)
rc = err;
if (lli->lli_clob) {
err = lov_read_and_clear_async_rc(lli->lli_clob);
if (rc == 0)
rc = err;
}
}
err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), &req);