Messages in this thread | | | Date | Tue, 24 Sep 2019 11:53:09 +0800 | From | kbuild test robot <> | Subject | [rcu:dev.2019.09.23a 50/77] kernel//rcu/update.c:871:3: note: in expansion of macro 'kfree_rcu' |
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tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.09.23a head: 97de53b94582c208ee239178b208b8e8b9472585 commit: 89538f9f8dda5e7738d71f179f9321740b680734 [50/77] rcu: Add crude self-test for early boot kfree_rcu() config: sparc64-allmodconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 89538f9f8dda5e7738d71f179f9321740b680734 # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=sparc64
If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@intel.com>
Note: the rcu/dev.2019.09.23a HEAD 97de53b94582c208ee239178b208b8e8b9472585 builds fine. It only hurts bisectibility.
All error/warnings (new ones prefixed by >>):
kernel//rcu/update.c: In function 'early_boot_test_call_rcu': >> kernel//rcu/update.c:869:8: error: implicit declaration of function 'kmalloc'; did you mean 'kvmalloc'? [-Werror=implicit-function-declaration] rhp = kmalloc(sizeof(*rhp), GFP_KERNEL); ^~~~~~~ kvmalloc >> kernel//rcu/update.c:869:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion] rhp = kmalloc(sizeof(*rhp), GFP_KERNEL); ^ In file included from include/linux/rbtree.h:22:0, from include/linux/hrtimer.h:16, from include/linux/interrupt.h:13, from kernel//rcu/update.c:25: >> include/linux/rcupdate.h:840:15: error: passing argument 1 of 'kfree_call_rcu' from incompatible pointer type [-Werror=incompatible-pointer-types] __kfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \ ^ include/linux/rcupdate.h:806:18: note: in definition of macro '__kfree_rcu' kfree_call_rcu(head, (rcu_callback_t)(unsigned long)(offset)); \ ^~~~ >> kernel//rcu/update.c:871:3: note: in expansion of macro 'kfree_rcu' kfree_rcu(rhp, rh); ^~~~~~~~~ In file included from include/linux/rcupdate.h:171:0, from include/linux/rbtree.h:22, from include/linux/hrtimer.h:16, from include/linux/interrupt.h:13, from kernel//rcu/update.c:25: include/linux/rcutree.h:36:6: note: expected 'struct callback_head *' but argument is of type 'struct callback_head **' void kfree_call_rcu(struct rcu_head *head, rcu_callback_t func); ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- kernel/rcu/update.c: In function 'early_boot_test_call_rcu': kernel/rcu/update.c:869:8: error: implicit declaration of function 'kmalloc'; did you mean 'kvmalloc'? [-Werror=implicit-function-declaration] rhp = kmalloc(sizeof(*rhp), GFP_KERNEL); ^~~~~~~ kvmalloc kernel/rcu/update.c:869:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion] rhp = kmalloc(sizeof(*rhp), GFP_KERNEL); ^ In file included from include/linux/rbtree.h:22:0, from include/linux/hrtimer.h:16, from include/linux/interrupt.h:13, from kernel/rcu/update.c:25: >> include/linux/rcupdate.h:840:15: error: passing argument 1 of 'kfree_call_rcu' from incompatible pointer type [-Werror=incompatible-pointer-types] __kfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \ ^ include/linux/rcupdate.h:806:18: note: in definition of macro '__kfree_rcu' kfree_call_rcu(head, (rcu_callback_t)(unsigned long)(offset)); \ ^~~~ kernel/rcu/update.c:871:3: note: in expansion of macro 'kfree_rcu' kfree_rcu(rhp, rh); ^~~~~~~~~ In file included from include/linux/rcupdate.h:171:0, from include/linux/rbtree.h:22, from include/linux/hrtimer.h:16, from include/linux/interrupt.h:13, from kernel/rcu/update.c:25: include/linux/rcutree.h:36:6: note: expected 'struct callback_head *' but argument is of type 'struct callback_head **' void kfree_call_rcu(struct rcu_head *head, rcu_callback_t func); ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors
vim +/kfree_rcu +871 kernel//rcu/update.c
859 860 static void early_boot_test_call_rcu(void) 861 { 862 static struct rcu_head head; 863 static struct rcu_head shead; 864 struct early_boot_kfree_rcu *rhp; 865 866 call_rcu(&head, test_callback); 867 if (IS_ENABLED(CONFIG_SRCU)) 868 call_srcu(&early_srcu, &shead, test_callback); > 869 rhp = kmalloc(sizeof(*rhp), GFP_KERNEL); 870 if (!WARN_ON_ONCE(!rhp)) > 871 kfree_rcu(rhp, rh); 872 } 873
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