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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()
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Linus Torvalds committed Sep 19, 2006
2 parents 79e453d + 5c2d97c commit 4ed4b54
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Showing 3 changed files with 9 additions and 7 deletions.
6 changes: 3 additions & 3 deletions fs/nfs/nfs4proc.c
Original file line number Diff line number Diff line change
Expand Up @@ -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)
Expand All @@ -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;
}
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6 changes: 4 additions & 2 deletions fs/nfs/read.c
Original file line number Diff line number Diff line change
Expand Up @@ -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:
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4 changes: 2 additions & 2 deletions fs/nfs/write.c
Original file line number Diff line number Diff line change
Expand Up @@ -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);
}
}

Expand Down Expand Up @@ -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;
}
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