Hi Mickaël, I love your patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Micka-l-Sala-n/Landlock-LSM-Toward-unprivileged-sandboxing/20180228-233659 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) include/linux/init.h:134:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/init.h:135:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/init.h:268:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/init.h:269:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/printk.h:200:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:32:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:34:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:37:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:38:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:40:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:42:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:43:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:45:5: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:46:5: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:49:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/qspinlock.h:53:32: sparse: attribute 'indirect_branch': unknown attribute include/linux/workqueue.h:646:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/workqueue.h:647:5: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/numa.h:34:12: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/numa.h:35:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/numa.h:62:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/vmalloc.h:64:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/vmalloc.h:173:8: sparse: attribute 'indirect_branch': unknown attribute include/linux/vmalloc.h:174:8: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:174:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:176:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:178:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:180:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/apic.h:254:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/apic.h:430:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/io_apic.h:184:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/smp.h:113:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/smp.h:125:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/smp.h:126:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:110:33: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:112:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:114:12: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:118:12: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:126:12: sparse: attribute 'indirect_branch': unknown attribute include/linux/hrtimer.h:497:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/memory_hotplug.h:221:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/mmzone.h:1292:15: sparse: attribute 'indirect_branch': unknown attribute include/linux/kmemleak.h:29:33: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/kasan.h:29:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/kasan.h:30:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/pgtable.h:28:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/slab.h:135:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/slab.h:716:6: sparse: attribute 'indirect_branch': unknown attribute >> security/landlock/tag.c:127:18: sparse: incompatible types in comparison expression (different address spaces) security/landlock/tag.c:257:16: sparse: incompatible types in comparison expression (different address spaces) security/landlock/tag.c:263:24: sparse: incompatible types in comparison expression (different address spaces) security/landlock/tag.c:357:16: sparse: incompatible types in comparison expression (different address spaces) -- arch/x86/include/asm/mem_encrypt.h:37:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:38:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:40:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:42:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:43:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:45:5: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:46:5: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/mem_encrypt.h:49:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/qspinlock.h:53:32: sparse: attribute 'indirect_branch': unknown attribute include/linux/workqueue.h:646:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/workqueue.h:647:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/wait_bit.h:41:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/numa.h:34:12: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/numa.h:35:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/numa.h:62:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/vmalloc.h:64:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/vmalloc.h:173:8: sparse: attribute 'indirect_branch': unknown attribute include/linux/vmalloc.h:174:8: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:174:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:176:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:178:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/fixmap.h:180:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/apic.h:254:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/apic.h:430:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/io_apic.h:184:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/smp.h:113:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/smp.h:125:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/smp.h:126:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:110:33: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:112:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:114:12: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:118:12: sparse: attribute 'indirect_branch': unknown attribute include/linux/percpu.h:126:12: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:63:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:64:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:65:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:66:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/memory_hotplug.h:221:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/mmzone.h:1292:15: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:2422:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:2423:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:3330:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/hrtimer.h:497:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/kmemleak.h:29:33: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/kasan.h:29:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/kasan.h:30:6: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/pgtable.h:28:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/slab.h:135:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/slab.h:716:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/mm.h:1753:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/mm.h:1941:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/mm.h:2083:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/mm.h:2671:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/swiotlb.h:39:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/swiotlb.h:124:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/swiotlb.h:9:12: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/swiotlb.h:10:12: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/swiotlb.h:11:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/swiotlb.h:12:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/dma-contiguous.h:85:5: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/vdso.h:44:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/cred.h:167:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/nsproxy.h:74:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/io.h:47:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/netdevice.h:302:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/netdevice.h:4056:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/ftrace.h:462:6: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:59:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:95:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:120:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:150:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:191:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:231:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:285:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/bpf.h:315:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/xdp.h:28:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/xdp.h:53:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/xdp.h:155:1: sparse: attribute 'indirect_branch': unknown attribute include/trace/events/xdp.h:190:1: sparse: attribute 'indirect_branch': unknown attribute kernel/bpf/core.c:1549:31: sparse: incorrect type in return expression (different address spaces) @@ expected struct bpf_prog_array [noderef] <asn:4>* @@ got sn:4>* @@ kernel/bpf/core.c:1549:31: expected struct bpf_prog_array [noderef] <asn:4>* kernel/bpf/core.c:1549:31: got void * kernel/bpf/core.c:1553:17: sparse: incorrect type in return expression (different address spaces) @@ expected struct bpf_prog_array [noderef] <asn:4>* @@ got rray [noderef] <asn:4>* @@ kernel/bpf/core.c:1553:17: expected struct bpf_prog_array [noderef] <asn:4>* kernel/bpf/core.c:1553:17: got struct bpf_prog_array *<noident> kernel/bpf/core.c:1561:9: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct callback_head *head @@ got struct callback_hstruct callback_head *head @@ kernel/bpf/core.c:1561:9: expected struct callback_head *head kernel/bpf/core.c:1561:9: got struct callback_head [noderef] <asn:4>*<noident> kernel/bpf/core.c:1624:34: sparse: incorrect type in initializer (different address spaces) @@ expected struct bpf_prog **prog @@ got struct bpf_prog *struct bpf_prog **prog @@ kernel/bpf/core.c:1624:34: expected struct bpf_prog **prog kernel/bpf/core.c:1624:34: got struct bpf_prog *[noderef] <asn:4>*<noident> kernel/bpf/core.c:1647:31: sparse: incorrect type in assignment (different address spaces) @@ expected struct bpf_prog **existing_prog @@ got struct bpf_prog *struct bpf_prog **existing_prog @@ kernel/bpf/core.c:1647:31: expected struct bpf_prog **existing_prog kernel/bpf/core.c:1647:31: got struct bpf_prog *[noderef] <asn:4>*<noident> kernel/bpf/core.c:1669:15: sparse: incorrect type in assignment (different address spaces) @@ expected struct bpf_prog_array *array @@ got struct bpf_prog_astruct bpf_prog_array *array @@ kernel/bpf/core.c:1669:15: expected struct bpf_prog_array *array kernel/bpf/core.c:1669:15: got struct bpf_prog_array [noderef] <asn:4>* kernel/bpf/core.c:1675:31: sparse: incorrect type in assignment (different address spaces) @@ expected struct bpf_prog **[assigned] existing_prog @@ got structstruct bpf_prog **[assigned] existing_prog @@ kernel/bpf/core.c:1675:31: expected struct bpf_prog **[assigned] existing_prog kernel/bpf/core.c:1675:31: got struct bpf_prog *[noderef] <asn:4>*<noident> include/trace/events/bpf.h:59:1: sparse: Using plain integer as NULL pointer include/trace/events/bpf.h:95:1: sparse: Using plain integer as NULL pointer include/trace/events/bpf.h:120:1: sparse: Using plain integer as NULL pointer include/trace/events/bpf.h:191:1: sparse: Using plain integer as NULL pointer include/trace/events/bpf.h:231:1: sparse: Using plain integer as NULL pointer include/trace/events/bpf.h:285:1: sparse: too many warnings vim +127 security/landlock/tag.c 116 117 /* return true if the tag_root is queued for freeing, false otherwise */ 118 static void put_tag_root(struct landlock_tag_root **root, 119 spinlock_t *root_lock) 120 { 121 struct landlock_tag_root *freeme; 122 123 if (!root || WARN_ON(!root_lock)) 124 return; 125 126 rcu_read_lock(); > 127 freeme = rcu_dereference(*root); 128 if (WARN_ON(!freeme)) 129 goto out_rcu; 130 if (!refcount_dec_and_lock(&freeme->tag_nb, root_lock)) 131 goto out_rcu; 132 133 rcu_assign_pointer(*root, NULL); 134 spin_unlock(root_lock); 135 call_rcu(&freeme->rcu_put, put_tag_root_rcu); 136 137 out_rcu: 138 rcu_read_unlock(); 139 } 140 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
