tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 00e4db51259a5f936fec1424b884f029479d3981 commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces date: 8 weeks ago config: arm64-randconfig-s032-20200811 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-168-g9554805c-dirty git checkout 670d0a4b10704667765f7d18f7592993d02783aa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) kernel/trace/ftrace.c:292:16: sparse: expected struct ftrace_ops **p kernel/trace/ftrace.c:292:16: sparse: got struct ftrace_ops [noderef] __rcu **list kernel/trace/ftrace.c:292:50: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops **p @@ got struct ftrace_ops [noderef] __rcu ** @@ kernel/trace/ftrace.c:292:50: sparse: expected struct ftrace_ops **p kernel/trace/ftrace.c:292:50: sparse: got struct ftrace_ops [noderef] __rcu ** kernel/trace/ftrace.c:299:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops * @@ got struct ftrace_ops [noderef] __rcu *next @@ kernel/trace/ftrace.c:299:12: sparse: expected struct ftrace_ops * kernel/trace/ftrace.c:299:12: sparse: got struct ftrace_ops [noderef] __rcu *next kernel/trace/ftrace.c:587:5: sparse: sparse: symbol 'ftrace_profile_pages_init' was not declared. Should it be static? kernel/trace/ftrace.c:1043:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:1043:43: sparse: expected struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1043:43: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:1044:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:1044:43: sparse: expected struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1044:43: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:1263:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1263:40: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1263:40: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1264:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1264:40: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1264:40: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1959:54: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *old_hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1959:54: sparse: expected struct ftrace_hash *old_hash kernel/trace/ftrace.c:1959:54: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1445:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/ftrace.c:1445:9: sparse: struct ftrace_hash [noderef] __rcu * kernel/trace/ftrace.c:1445:9: sparse: struct ftrace_hash * kernel/trace/ftrace.c:1461:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1461:39: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1461:39: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1462:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1462:40: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1462:40: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1463:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1463:40: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1463:40: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1464:42: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1464:42: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1464:42: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1618:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list @@ kernel/trace/ftrace.c:1618:18: sparse: expected struct ftrace_ops *ops kernel/trace/ftrace.c:1618:18: sparse: got struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list kernel/trace/ftrace.c:1619:43: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *next @@ kernel/trace/ftrace.c:1619:43: sparse: expected struct ftrace_ops *ops kernel/trace/ftrace.c:1619:43: sparse: got struct ftrace_ops [noderef] __rcu *next kernel/trace/ftrace.c:1665:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1665:22: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1665:22: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1666:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *other_hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1666:28: sparse: expected struct ftrace_hash *other_hash kernel/trace/ftrace.c:1666:28: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1671:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1671:22: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1671:22: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1672:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *other_hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1672:28: sparse: expected struct ftrace_hash *other_hash kernel/trace/ftrace.c:1672:28: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1937:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1937:50: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1937:50: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1948:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1948:50: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1948:50: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:3220:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3220:14: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3220:14: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:3237:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3237:22: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3237:22: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:3712:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3712:22: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3712:22: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:3715:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3715:22: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3715:22: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:4117:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:4117:27: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:4117:27: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:4119:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:4119:27: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:4119:27: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:4491:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:4491:19: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:4491:19: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:4633:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:4633:19: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:4633:19: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:4639:34: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash *[assigned] old_hash @@ kernel/trace/ftrace.c:4639:34: sparse: expected struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:4639:34: sparse: got struct ftrace_hash *[assigned] old_hash kernel/trace/ftrace.c:4891:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:4891:27: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:4891:27: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:4893:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:4893:27: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:4893:27: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:5477:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *extern [addressable] [toplevel] ftrace_graph_hash @@ got struct ftrace_hash *[assigned] hash @@ kernel/trace/ftrace.c:5477:35: sparse: got struct ftrace_hash *[assigned] hash kernel/trace/ftrace.c:5479:43: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *extern [addressable] [toplevel] ftrace_graph_notrace_hash @@ got struct ftrace_hash *[assigned] hash @@ kernel/trace/ftrace.c:5479:43: sparse: got struct ftrace_hash *[assigned] hash kernel/trace/ftrace.c:5538:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5538:35: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:5538:35: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:5542:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5542:35: sparse: expected struct ftrace_hash **orig_hash kernel/trace/ftrace.c:5542:35: sparse: got struct ftrace_hash [noderef] __rcu ** kernel/trace/ftrace.c:5596:47: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *[addressable] [toplevel] ftrace_graph_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:5596:47: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:5597:55: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *[addressable] [toplevel] ftrace_graph_notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:5597:55: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:6192:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list @@ kernel/trace/ftrace.c:6192:18: sparse: expected struct ftrace_ops *ops kernel/trace/ftrace.c:6192:18: sparse: got struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list kernel/trace/ftrace.c:6192:66: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *next @@ kernel/trace/ftrace.c:6192:66: sparse: expected struct ftrace_ops *ops kernel/trace/ftrace.c:6192:66: sparse: got struct ftrace_ops [noderef] __rcu *next kernel/trace/ftrace.c:6233:59: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:6233:59: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:6233:59: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:6234:59: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:6234:59: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:6234:59: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:6589:62: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:6589:62: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:6589:62: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:6590:62: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:6590:62: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:6590:62: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:6636:36: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/ftrace.c:6636:36: sparse: struct ftrace_ops [noderef] __rcu * kernel/trace/ftrace.c:6636:36: sparse: struct ftrace_ops * kernel/trace/ftrace.c:7423:43: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected void * @@ got void [noderef] __user *buffer @@ kernel/trace/ftrace.c:7423:43: sparse: expected void * kernel/trace/ftrace.c:7423:43: sparse: got void [noderef] __user *buffer kernel/trace/ftrace.c:203:20: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:203:20: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:203:20: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3011:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3011:46: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3011:46: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:3012:47: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3012:47: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3012:47: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:3016:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3016:44: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3016:44: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:2988:48: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:2988:48: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:2988:48: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:2989:49: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:2989:49: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:2989:49: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash vim +5477 kernel/trace/ftrace.c 0d7d9a16ce11268 Namhyung Kim 2014-06-13 5456 0d7d9a16ce11268 Namhyung Kim 2014-06-13 5457 static void __init set_ftrace_early_graph(char *buf, int enable) 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5458 { 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5459 int ret; 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5460 char *func; b9b0c831bed2682 Namhyung Kim 2017-01-20 5461 struct ftrace_hash *hash; 0d7d9a16ce11268 Namhyung Kim 2014-06-13 5462 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 5463) hash = alloc_ftrace_hash(FTRACE_HASH_DEFAULT_BITS); 24589e3a20876dc Steven Rostedt (VMware 2020-01-25 5464) if (MEM_FAIL(!hash, "Failed to allocate hash\n")) 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 5465) return; 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5466 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5467 while (buf) { 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5468 func = strsep(&buf, ","); 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5469 /* we allow only one expression at a time */ b9b0c831bed2682 Namhyung Kim 2017-01-20 5470 ret = ftrace_graph_set_hash(hash, func); 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5471 if (ret) 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5472 printk(KERN_DEBUG "ftrace: function %s not " 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5473 "traceable\n", func); 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5474 } 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 5475) 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 5476) if (enable) 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 @5477) ftrace_graph_hash = hash; 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 5478) else 92ad18ec26611e8 Steven Rostedt (VMware 2017-03-02 @5479) ftrace_graph_notrace_hash = hash; 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5480 } 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5481 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5482 2a85a37f168d2b4 Steven Rostedt 2011-12-19 5483 void __init 2a85a37f168d2b4 Steven Rostedt 2011-12-19 5484 ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable) 2af15d6a44b871a Steven Rostedt 2009-05-28 5485 { 2af15d6a44b871a Steven Rostedt 2009-05-28 5486 char *func; 2af15d6a44b871a Steven Rostedt 2009-05-28 5487 f04f24fb7e48d44 Masami Hiramatsu 2013-05-09 5488 ftrace_ops_init(ops); f04f24fb7e48d44 Masami Hiramatsu 2013-05-09 5489 2af15d6a44b871a Steven Rostedt 2009-05-28 5490 while (buf) { 2af15d6a44b871a Steven Rostedt 2009-05-28 5491 func = strsep(&buf, ","); f45948e898e7bc7 Steven Rostedt 2011-05-02 5492 ftrace_set_regex(ops, func, strlen(func), 0, enable); 2af15d6a44b871a Steven Rostedt 2009-05-28 5493 } 2af15d6a44b871a Steven Rostedt 2009-05-28 5494 } 2af15d6a44b871a Steven Rostedt 2009-05-28 5495 2af15d6a44b871a Steven Rostedt 2009-05-28 5496 static void __init set_ftrace_early_filters(void) 2af15d6a44b871a Steven Rostedt 2009-05-28 5497 { 2af15d6a44b871a Steven Rostedt 2009-05-28 5498 if (ftrace_filter_buf[0]) 2a85a37f168d2b4 Steven Rostedt 2011-12-19 5499 ftrace_set_early_filter(&global_ops, ftrace_filter_buf, 1); 2af15d6a44b871a Steven Rostedt 2009-05-28 5500 if (ftrace_notrace_buf[0]) 2a85a37f168d2b4 Steven Rostedt 2011-12-19 5501 ftrace_set_early_filter(&global_ops, ftrace_notrace_buf, 0); 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5502 #ifdef CONFIG_FUNCTION_GRAPH_TRACER 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5503 if (ftrace_graph_buf[0]) 0d7d9a16ce11268 Namhyung Kim 2014-06-13 5504 set_ftrace_early_graph(ftrace_graph_buf, 1); 0d7d9a16ce11268 Namhyung Kim 2014-06-13 5505 if (ftrace_graph_notrace_buf[0]) 0d7d9a16ce11268 Namhyung Kim 2014-06-13 5506 set_ftrace_early_graph(ftrace_graph_notrace_buf, 0); 369bc18f9a6c4e2 Stefan Assmann 2009-10-12 5507 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ 2af15d6a44b871a Steven Rostedt 2009-05-28 5508 } 2af15d6a44b871a Steven Rostedt 2009-05-28 5509 fc13cb0ce45296f Steven Rostedt 2011-12-19 5510 int ftrace_regex_release(struct inode *inode, struct file *file) 5072c59fd45e997 Steven Rostedt 2008-05-12 5511 { 5072c59fd45e997 Steven Rostedt 2008-05-12 5512 struct seq_file *m = (struct seq_file *)file->private_data; 5072c59fd45e997 Steven Rostedt 2008-05-12 5513 struct ftrace_iterator *iter; 33dc9b1267d59ce Steven Rostedt 2011-05-02 5514 struct ftrace_hash **orig_hash; 689fd8b65d669b9 jolsa(a)redhat.com 2009-09-11 5515 struct trace_parser *parser; ed926f9b35cda09 Steven Rostedt 2011-05-03 5516 int filter_hash; 33dc9b1267d59ce Steven Rostedt 2011-05-02 5517 int ret; 5072c59fd45e997 Steven Rostedt 2008-05-12 5518 5072c59fd45e997 Steven Rostedt 2008-05-12 5519 if (file->f_mode & FMODE_READ) { 5072c59fd45e997 Steven Rostedt 2008-05-12 5520 iter = m->private; 5072c59fd45e997 Steven Rostedt 2008-05-12 5521 seq_release(inode, file); 5072c59fd45e997 Steven Rostedt 2008-05-12 5522 } else 5072c59fd45e997 Steven Rostedt 2008-05-12 5523 iter = file->private_data; 5072c59fd45e997 Steven Rostedt 2008-05-12 5524 689fd8b65d669b9 jolsa(a)redhat.com 2009-09-11 5525 parser = &iter->parser; 689fd8b65d669b9 jolsa(a)redhat.com 2009-09-11 5526 if (trace_parser_loaded(parser)) { 1cf41dd79993389 Steven Rostedt 2011-04-29 5527 ftrace_match_records(iter->hash, parser->buffer, parser->idx); 5072c59fd45e997 Steven Rostedt 2008-05-12 5528 } 5072c59fd45e997 Steven Rostedt 2008-05-12 5529 058e297d34a404c Steven Rostedt 2011-04-29 5530 trace_parser_put(parser); 058e297d34a404c Steven Rostedt 2011-04-29 5531 33b7f99cf003ca6 Steven Rostedt (Red Hat 2014-08-15 5532) mutex_lock(&iter->ops->func_hash->regex_lock); 3f2367ba7cbf13e Masami Hiramatsu 2013-05-09 5533 058e297d34a404c Steven Rostedt 2011-04-29 5534 if (file->f_mode & FMODE_WRITE) { ed926f9b35cda09 Steven Rostedt 2011-05-03 5535 filter_hash = !!(iter->flags & FTRACE_ITER_FILTER); ed926f9b35cda09 Steven Rostedt 2011-05-03 5536 8c08f0d5c6fb10f Steven Rostedt (VMware 2017-06-26 5537) if (filter_hash) { 33b7f99cf003ca6 Steven Rostedt (Red Hat 2014-08-15 5538) orig_hash = &iter->ops->func_hash->filter_hash; 69d71879d2cf67a Steven Rostedt (VMware 2017-07-05 5539) if (iter->tr && !list_empty(&iter->tr->mod_trace)) 8c08f0d5c6fb10f Steven Rostedt (VMware 2017-06-26 5540) iter->hash->flags |= FTRACE_HASH_FL_MOD; 8c08f0d5c6fb10f Steven Rostedt (VMware 2017-06-26 5541) } else 33b7f99cf003ca6 Steven Rostedt (Red Hat 2014-08-15 5542) orig_hash = &iter->ops->func_hash->notrace_hash; 33dc9b1267d59ce Steven Rostedt 2011-05-02 5543 e6ea44e9b4c1232 Steven Rostedt 2009-02-14 5544 mutex_lock(&ftrace_lock); e16b35ddb840788 Steven Rostedt (VMware 2017-04-04 5545) ret = ftrace_hash_move_and_update_ops(iter->ops, orig_hash, e16b35ddb840788 Steven Rostedt (VMware 2017-04-04 5546) iter->hash, filter_hash); e6ea44e9b4c1232 Steven Rostedt 2009-02-14 5547 mutex_unlock(&ftrace_lock); c20489dad156dd9 Steven Rostedt (VMware 2017-03-29 5548) } else { c20489dad156dd9 Steven Rostedt (VMware 2017-03-29 5549) /* For read only, the hash is the ops hash */ c20489dad156dd9 Steven Rostedt (VMware 2017-03-29 5550) iter->hash = NULL; 058e297d34a404c Steven Rostedt 2011-04-29 5551 } 3f2367ba7cbf13e Masami Hiramatsu 2013-05-09 5552 33b7f99cf003ca6 Steven Rostedt (Red Hat 2014-08-15 5553) mutex_unlock(&iter->ops->func_hash->regex_lock); 33dc9b1267d59ce Steven Rostedt 2011-05-02 5554 free_ftrace_hash(iter->hash); 9ef16693aff8137 Steven Rostedt (VMware 2019-10-11 5555) if (iter->tr) 9ef16693aff8137 Steven Rostedt (VMware 2019-10-11 5556) trace_array_put(iter->tr); 33dc9b1267d59ce Steven Rostedt 2011-05-02 5557 kfree(iter); 689fd8b65d669b9 jolsa(a)redhat.com 2009-09-11 5558 5072c59fd45e997 Steven Rostedt 2008-05-12 5559 return 0; 5072c59fd45e997 Steven Rostedt 2008-05-12 5560 } 5072c59fd45e997 Steven Rostedt 2008-05-12 5561 5e2336a0d47c966 Steven Rostedt 2009-03-05 5562 static const struct file_operations ftrace_avail_fops = { 5072c59fd45e997 Steven Rostedt 2008-05-12 5563 .open = ftrace_avail_open, 5072c59fd45e997 Steven Rostedt 2008-05-12 5564 .read = seq_read, 5072c59fd45e997 Steven Rostedt 2008-05-12 5565 .llseek = seq_lseek, 3be04b471b95b87 Li Zefan 2009-08-17 5566 .release = seq_release_private, 5072c59fd45e997 Steven Rostedt 2008-05-12 5567 }; 5072c59fd45e997 Steven Rostedt 2008-05-12 5568 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5569 static const struct file_operations ftrace_enabled_fops = { 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5570 .open = ftrace_enabled_open, 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5571 .read = seq_read, 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5572 .llseek = seq_lseek, 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5573 .release = seq_release_private, 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5574 }; 647bcd03d5b2fb4 Steven Rostedt 2011-05-03 5575 5e2336a0d47c966 Steven Rostedt 2009-03-05 5576 static const struct file_operations ftrace_filter_fops = { 5072c59fd45e997 Steven Rostedt 2008-05-12 5577 .open = ftrace_filter_open, 850a80cfaa5aec3 Lai Jiangshan 2009-03-13 5578 .read = seq_read, 5072c59fd45e997 Steven Rostedt 2008-05-12 5579 .write = ftrace_filter_write, 098c879e1f2d6ee Steven Rostedt (Red Hat 2013-12-21 5580) .llseek = tracing_lseek, 1cf41dd79993389 Steven Rostedt 2011-04-29 5581 .release = ftrace_regex_release, 5072c59fd45e997 Steven Rostedt 2008-05-12 5582 }; 5072c59fd45e997 Steven Rostedt 2008-05-12 5583 5e2336a0d47c966 Steven Rostedt 2009-03-05 5584 static const struct file_operations ftrace_notrace_fops = { 41c52c0db9607e5 Steven Rostedt 2008-05-22 5585 .open = ftrace_notrace_open, 850a80cfaa5aec3 Lai Jiangshan 2009-03-13 5586 .read = seq_read, 41c52c0db9607e5 Steven Rostedt 2008-05-22 5587 .write = ftrace_notrace_write, 098c879e1f2d6ee Steven Rostedt (Red Hat 2013-12-21 5588) .llseek = tracing_lseek, 1cf41dd79993389 Steven Rostedt 2011-04-29 5589 .release = ftrace_regex_release, 41c52c0db9607e5 Steven Rostedt 2008-05-22 5590 }; 41c52c0db9607e5 Steven Rostedt 2008-05-22 5591 ea4e2bc4d9f7370 Steven Rostedt 2008-12-03 5592 #ifdef CONFIG_FUNCTION_GRAPH_TRACER ea4e2bc4d9f7370 Steven Rostedt 2008-12-03 5593 ea4e2bc4d9f7370 Steven Rostedt 2008-12-03 5594 static DEFINE_MUTEX(graph_lock); ea4e2bc4d9f7370 Steven Rostedt 2008-12-03 5595 24a9729f831462b Amol Grover 2020-02-01 @5596 struct ftrace_hash __rcu *ftrace_graph_hash = EMPTY_HASH; fd0e6852c407dd9 Amol Grover 2020-02-05 @5597 struct ftrace_hash __rcu *ftrace_graph_notrace_hash = EMPTY_HASH; b9b0c831bed2682 Namhyung Kim 2017-01-20 5598 :::::: The code at line 5477 was first introduced by commit :::::: 92ad18ec26611e8a47639e600bd9dc42fbe2edcf ftrace/graph: Do not modify the EMPTY_HASH for the function_graph filter :::::: TO: Steven Rostedt (VMware) <rostedt(a)goodmis.org&gt; :::::: CC: Steven Rostedt (VMware) <rostedt(a)goodmis.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org