Hi Stephen, I love your patch! Perhaps something to improve: [auto build test WARNING on net/master] [also build test WARNING on v4.16-rc2 next-20180223] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Stephen-Hemminger/mark-some-slabs-as-visible-not-mergeable/20180225-084344 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 include/linux/memory_hotplug.h:221:13: 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/mmzone.h:1292:15: 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/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:141:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/slab.h:722:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/hrtimer.h:497:13: sparse: attribute 'indirect_branch': unknown attribute arch/x86/include/asm/vdso.h:44:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/wait_bit.h:41:13: 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/fs.h:2421:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:2422:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:3329:5: 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 include/linux/bootmem.h:175:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:183:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:191:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:200:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:208:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:217:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:225:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:232:22: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:240:20: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:246:20: sparse: attribute 'indirect_branch': unknown attribute include/linux/bootmem.h:252:20: sparse: attribute 'indirect_branch': unknown attribute include/linux/io.h:47:6: 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/netdevice.h:302:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/netdevice.h:4056:5: sparse: attribute 'indirect_branch': unknown attribute include/net/inetpeer.h:68:27: sparse: attribute 'indirect_branch': unknown attribute include/linux/audit.h:90:12: sparse: attribute 'indirect_branch': unknown attribute net//ipv4/tcp.c:3577:12: sparse: attribute 'indirect_branch': unknown attribute net//ipv4/tcp.c:3592:13: sparse: attribute 'indirect_branch': unknown attribute net//ipv4/tcp.c:3602:6: sparse: attribute 'indirect_branch': unknown attribute >> net//ipv4/tcp.c:3620:53: sparse: restricted slab_flags_t degrades to integer >> net//ipv4/tcp.c:3620:64: sparse: incorrect type in argument 4 (different base types) @@ expected restricted slab_flags_t flags @@ got t flags @@ net//ipv4/tcp.c:3620:64: expected restricted slab_flags_t flags net//ipv4/tcp.c:3620:64: got unsigned long include/net/sock.h:1489:31: sparse: context imbalance in 'tcp_ioctl' - unexpected unlock include/net/sock.h:1489:31: sparse: context imbalance in 'tcp_get_info' - unexpected unlock -- 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 include/linux/memory_hotplug.h:221:13: 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/mmzone.h:1292:15: 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 arch/x86/include/asm/vdso.h:44:13: 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:141:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/slab.h:722:6: sparse: attribute 'indirect_branch': unknown attribute include/linux/wait_bit.h:41:13: 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/fs.h:2421:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:2422:13: sparse: attribute 'indirect_branch': unknown attribute include/linux/fs.h:3329:5: sparse: attribute 'indirect_branch': unknown attribute include/linux/hrtimer.h:497:13: 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 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/net/inetpeer.h:68:27: sparse: attribute 'indirect_branch': unknown attribute include/linux/audit.h:90:12: sparse: attribute 'indirect_branch': unknown attribute net//ipv4/tcp_ipv4.c:2392:5: sparse: attribute 'indirect_branch': unknown attribute net//ipv4/tcp_ipv4.c:2578:6: sparse: attribute 'indirect_branch': unknown attribute >> net//ipv4/tcp_ipv4.c:2437:35: sparse: restricted slab_flags_t degrades to integer >> net//ipv4/tcp_ipv4.c:2437:56: sparse: incorrect type in initializer (different base types) @@ expected restricted slab_flags_t slab_flags @@ got t slab_flags @@ net//ipv4/tcp_ipv4.c:2437:56: expected restricted slab_flags_t slab_flags net//ipv4/tcp_ipv4.c:2437:56: got unsigned long net//ipv4/tcp_ipv4.c:2553:50: sparse: incorrect type in assignment (different address spaces) @@ expected struct tcp_congestion_ops const @@ got ps const @@ net//ipv4/tcp_ipv4.c:2553:50: expected struct tcp_congestion_ops const net//ipv4/tcp_ipv4.c:2553:50: got struct tcp_congestion_ops net//ipv4/tcp_ipv4.c:1572:17: sparse: context imbalance in 'tcp_add_backlog' - unexpected unlock net//ipv4/tcp_ipv4.c:1779:21: sparse: context imbalance in 'tcp_v4_rcv' - different lock contexts for basic block net//ipv4/tcp_ipv4.c:1970:20: sparse: context imbalance in 'listening_get_next' - unexpected unlock net//ipv4/tcp_ipv4.c:2030:9: sparse: context imbalance in 'established_get_first' - wrong count at exit net//ipv4/tcp_ipv4.c:2050:40: sparse: context imbalance in 'established_get_next' - unexpected unlock net//ipv4/tcp_ipv4.c:2178:36: sparse: context imbalance in 'tcp_seq_stop' - unexpected unlock net//ipv4/tcp_ipv4.c:2454:29: sparse: dereference of noderef expression net//ipv4/tcp_ipv4.c:2550:41: sparse: dereference of noderef expression -- >> net//ipv6/tcp_ipv6.c:1947:35: sparse: restricted slab_flags_t degrades to integer >> net//ipv6/tcp_ipv6.c:1947:56: sparse: incorrect type in initializer (different base types) @@ expected restricted slab_flags_t slab_flags @@ got t slab_flags @@ net//ipv6/tcp_ipv6.c:1947:56: expected restricted slab_flags_t slab_flags net//ipv6/tcp_ipv6.c:1947:56: got unsigned long net//ipv6/tcp_ipv6.c:1551:21: sparse: context imbalance in 'tcp_v6_rcv' - different lock contexts for basic block vim +3620 net//ipv4/tcp.c 3575 3576 static __initdata unsigned long thash_entries; > 3577 static int __init set_thash_entries(char *str) 3578 { 3579 ssize_t ret; 3580 3581 if (!str) 3582 return 0; 3583 3584 ret = kstrtoul(str, 0, &thash_entries); 3585 if (ret) 3586 return 0; 3587 3588 return 1; 3589 } 3590 __setup("thash_entries=", set_thash_entries); 3591 3592 static void __init tcp_init_mem(void) 3593 { 3594 unsigned long limit = nr_free_buffer_pages() / 16; 3595 3596 limit = max(limit, 128UL); 3597 sysctl_tcp_mem[0] = limit / 4 * 3; /* 4.68 % */ 3598 sysctl_tcp_mem[1] = limit; /* 6.25 % */ 3599 sysctl_tcp_mem[2] = sysctl_tcp_mem[0] * 2; /* 9.37 % */ 3600 } 3601 3602 void __init tcp_init(void) 3603 { 3604 int max_rshare, max_wshare, cnt; 3605 unsigned long limit; 3606 unsigned int i; 3607 3608 BUILD_BUG_ON(sizeof(struct tcp_skb_cb) > 3609 FIELD_SIZEOF(struct sk_buff, cb)); 3610 3611 percpu_counter_init(&tcp_sockets_allocated, 0, GFP_KERNEL); 3612 percpu_counter_init(&tcp_orphan_count, 0, GFP_KERNEL); 3613 inet_hashinfo_init(&tcp_hashinfo); 3614 inet_hashinfo2_init(&tcp_hashinfo, "tcp_listen_portaddr_hash", 3615 thash_entries, 21, /* one slot per 2 MB*/ 3616 0, 64 * 1024); 3617 tcp_hashinfo.bind_bucket_cachep = 3618 kmem_cache_create("tcp_bind_bucket", 3619 sizeof(struct inet_bind_bucket), 0, > 3620 SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_VISIBLE_UAPI, --- 0-DAY kernel test infrastructure Open 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