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Merge branch 'fixes' of git://git.linux-nfs.org/pub/linux/nfs-2.6

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* 'fixes' of git://git.linux-nfs.org/pub/linux/nfs-2.6:
  NFS: Fix nfs_page use after free issues in fs/nfs/write.c
  NFSv4: Fix incorrect semaphore release in _nfs4_do_open()
  NFS: Fix Oopsable condition in nfs_readpage_sync()
This commit is contained in:
Linus Torvalds 2006-09-19 09:46:53 -07:00
commit 4ed4b54752
3 changed files with 9 additions and 7 deletions
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6
fs/nfs/nfs4proc.c
View file

@ -970,7 +970,7 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
status = -ENOMEM;
opendata = nfs4_opendata_alloc(dentry, sp, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
goto err_release_rwsem;
status = _nfs4_proc_open(opendata);
if (status != 0)
@ -989,11 +989,11 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
return 0;
err_opendata_free:
nfs4_opendata_free(opendata);
err_release_rwsem:
up_read(&clp->cl_sem);
err_put_state_owner:
nfs4_put_state_owner(sp);
out_err:
/* Note: clp->cl_sem must be released before nfs4_put_open_state()! */
up_read(&clp->cl_sem);
*res = NULL;
return status;
}

6
fs/nfs/read.c
View file

@ -204,9 +204,11 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode,
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
spin_unlock(&inode->i_lock);
nfs_readpage_truncate_uninitialised_page(rdata);
if (rdata->res.eof || rdata->res.count == rdata->args.count)
if (rdata->res.eof || rdata->res.count == rdata->args.count) {
SetPageUptodate(page);
if (rdata->res.eof && count != 0)
memclear_highpage_flush(page, rdata->args.pgbase, count);
}
result = 0;
io_error:

4
fs/nfs/write.c
View file

@ -590,8 +590,8 @@ static void nfs_cancel_commit_list(struct list_head *head)
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_inode_remove_request(req);
nfs_clear_page_writeback(req);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
nfs_clear_page_writeback(req);
}
}
@ -1386,8 +1386,8 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_mark_request_commit(req);
nfs_clear_page_writeback(req);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
nfs_clear_page_writeback(req);
}
return -ENOMEM;
}