2 * Copyright (C) 2021 Oracle.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
22 #define GFP_KERNEL_OLD 0x6000c0
23 #define GFP_KERNEL 0xcc0
25 static void match_alloc(const char *fn
, struct expression
*expr
, void *_arg
)
27 int arg_nr
= PTR_INT(_arg
);
28 struct expression
*arg_expr
;
31 arg_expr
= get_argument_from_call_expr(expr
->args
, arg_nr
);
32 if (!get_value(arg_expr
, &sval
))
34 if ((sval
.uvalue
& GFP_KERNEL
) == GFP_KERNEL
)
36 if ((sval
.uvalue
& GFP_KERNEL_OLD
) == GFP_KERNEL_OLD
)
39 sm_error("kvmalloc() only makes sense with GFP_KERNEL");
42 void check_kvmalloc_NOFS(int id
)
44 if (option_project
!= PROJ_KERNEL
)
49 add_function_hook("kvmalloc", &match_alloc
, INT_PTR(1));
50 add_function_hook("kvzalloc", &match_alloc
, INT_PTR(1));
51 add_function_hook("kvmalloc_array", &match_alloc
, INT_PTR(2));
52 add_function_hook("kvcalloc", &match_alloc
, INT_PTR(2));