/* Generate kernel symbol version hashes. Copyright 1996, 1997 Linux International. New implementation contributed by Richard Henderson Based on original work by Bjorn Ekwall This file is part of the Linux modutils. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef MODUTILS_GENKSYMS_H #define MODUTILS_GENKSYMS_H 1 #include enum symbol_type { SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION, SYM_ENUM_CONST }; enum symbol_status { STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED }; struct string_list { struct string_list *next; enum symbol_type tag; int in_source_file; char *string; }; struct symbol { struct symbol *hash_next; const char *name; enum symbol_type type; struct string_list *defn; struct symbol *expansion_trail; struct symbol *visited; int is_extern; int is_declared; enum symbol_status status; int is_override; }; typedef struct string_list **yystype; #define YYSTYPE yystype extern int cur_line; extern char *cur_filename, *source_file; extern int in_source_file; struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact); struct symbol *add_symbol(const char *name, enum symbol_type type, struct string_list *defn, int is_extern); void export_symbol(const char *); void free_node(struct string_list *list); void free_list(struct string_list *s, struct string_list *e); struct string_list *copy_node(struct string_list *); struct string_list *copy_list_range(struct string_list *start, struct string_list *end); int yylex(void); int yyparse(void); void error_with_pos(const char *, ...); /*----------------------------------------------------------------------*/ #define xmalloc(size) ({ void *__ptr = malloc(size); \ if(!__ptr && size != 0) { \ fprintf(stderr, "out of memory\n"); \ exit(1); \ } \ __ptr; }) #define xstrdup(str) ({ char *__str = strdup(str); \ if (!__str) { \ fprintf(stderr, "out of memory\n"); \ exit(1); \ } \ __str; }) #endif /* genksyms.h */ >/net/can/Makefile
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authorTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
committerTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
commit07cd12945551b63ecb1a349d50a6d69d1d6feb4a (patch)
tree75f65eba7eac9277971082a2d5a4cf1370562c0c /net/can/Makefile
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'net/can/Makefile')