Hi Michael, [auto build test ERROR on char-misc/char-misc-testing] [also build test ERROR on v4.9-rc7] [cannot apply to next-20161202] [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/Michael-Ellerman/lkdtm-Add-tests-for-LIST_POISON-and-ZERO_SIZE_PTR/20161203-124958 config: blackfin-allyesconfig (attached as .config) compiler: bfin-uclinux-gcc (GCC) 6.2.0 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=blackfin All error/warnings (new ones prefixed by >>): In file included from include/linux/cache.h:4:0, from include/linux/printk.h:8, from include/linux/kernel.h:13, from drivers/misc/lkdtm.h:6, from drivers/misc/lkdtm_bugs.c:7: drivers/misc/lkdtm_bugs.c: In function 'test_poison_ptr': >> drivers/misc/lkdtm_bugs.c:160:20: error: 'CONFIG_DEFAULT_MMAP_MIN_ADDR' >> undeclared (first use in this function) bias = PAGE_ALIGN(CONFIG_DEFAULT_MMAP_MIN_ADDR); ^ include/uapi/linux/kernel.h:10:41: note: in definition of macro '__ALIGN_KERNEL_MASK' #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) ^ >> include/linux/kernel.h:48:22: note: in expansion of macro '__ALIGN_KERNEL' #define ALIGN(x, a) __ALIGN_KERNEL((x), (a)) ^~~~~~~~~~~~~~ >> include/linux/mm.h:126:26: note: in expansion of macro 'ALIGN' #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) ^~~~~ >> drivers/misc/lkdtm_bugs.c:160:9: note: in expansion of macro 'PAGE_ALIGN' bias = PAGE_ALIGN(CONFIG_DEFAULT_MMAP_MIN_ADDR); ^~~~~~~~~~ drivers/misc/lkdtm_bugs.c:160:20: note: each undeclared identifier is reported only once for each function it appears in bias = PAGE_ALIGN(CONFIG_DEFAULT_MMAP_MIN_ADDR); ^ include/uapi/linux/kernel.h:10:41: note: in definition of macro '__ALIGN_KERNEL_MASK' #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) ^ >> include/linux/kernel.h:48:22: note: in expansion of macro '__ALIGN_KERNEL' #define ALIGN(x, a) __ALIGN_KERNEL((x), (a)) ^~~~~~~~~~~~~~ >> include/linux/mm.h:126:26: note: in expansion of macro 'ALIGN' #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) ^~~~~ >> drivers/misc/lkdtm_bugs.c:160:9: note: in expansion of macro 'PAGE_ALIGN' bias = PAGE_ALIGN(CONFIG_DEFAULT_MMAP_MIN_ADDR); ^~~~~~~~~~ vim +/CONFIG_DEFAULT_MMAP_MIN_ADDR +160 drivers/misc/lkdtm_bugs.c 1 /* 2 * This is for all the tests related to logic bugs (e.g. bad dereferences, 3 * bad alignment, bad loops, bad locking, bad scheduling, deep stacks, and 4 * lockups) along with other things that don't fit well into existing LKDTM 5 * test source files. 6 */ > 7 #include "lkdtm.h" 8 #include <linux/mman.h> 9 #include <linux/sched.h> 10 #include <linux/security.h> 11 #include <linux/slab.h> 12 13 /* 14 * Make sure our attempts to over run the kernel stack doesn't trigger 15 * a compiler warning when CONFIG_FRAME_WARN is set. Then make sure we 16 * recurse past the end of THREAD_SIZE by default. 17 */ 18 #if defined(CONFIG_FRAME_WARN) && (CONFIG_FRAME_WARN > 0) 19 #define REC_STACK_SIZE (CONFIG_FRAME_WARN / 2) 20 #else 21 #define REC_STACK_SIZE (THREAD_SIZE / 8) 22 #endif 23 #define REC_NUM_DEFAULT ((THREAD_SIZE / REC_STACK_SIZE) * 2) 24 25 static int recur_count = REC_NUM_DEFAULT; 26 27 static DEFINE_SPINLOCK(lock_me_up); 28 29 static int recursive_loop(int remaining) 30 { 31 char buf[REC_STACK_SIZE]; 32 33 /* Make sure compiler does not optimize this away. */ 34 memset(buf, (remaining & 0xff) | 0x1, REC_STACK_SIZE); 35 if (!remaining) 36 return 0; 37 else 38 return recursive_loop(remaining - 1); 39 } 40 41 /* If the depth is negative, use the default, otherwise keep parameter. */ 42 void __init lkdtm_bugs_init(int *recur_param) 43 { 44 if (*recur_param < 0) 45 *recur_param = recur_count; 46 else 47 recur_count = *recur_param; 48 } 49 50 void lkdtm_PANIC(void) 51 { 52 panic("dumptest"); 53 } 54 55 void lkdtm_BUG(void) 56 { 57 BUG(); 58 } 59 60 void lkdtm_WARNING(void) 61 { 62 WARN_ON(1); 63 } 64 65 void lkdtm_EXCEPTION(void) 66 { 67 *((int *) 0) = 0; 68 } 69 70 void lkdtm_LOOP(void) 71 { 72 for (;;) 73 ; 74 } 75 76 void lkdtm_OVERFLOW(void) 77 { 78 (void) recursive_loop(recur_count); 79 } 80 81 noinline void lkdtm_CORRUPT_STACK(void) 82 { 83 /* Use default char array length that triggers stack protection. */ 84 char data[8]; 85 86 memset((void *)data, 'a', 64); 87 pr_info("Corrupted stack with '%16s'...\n", data); 88 } 89 90 void lkdtm_UNALIGNED_LOAD_STORE_WRITE(void) 91 { 92 static u8 data[5] __attribute__((aligned(4))) = {1, 2, 3, 4, 5}; 93 u32 *p; 94 u32 val = 0x12345678; 95 96 p = (u32 *)(data + 1); 97 if (*p == 0) 98 val = 0x87654321; 99 *p = val; 100 } 101 102 void lkdtm_SOFTLOCKUP(void) 103 { 104 preempt_disable(); 105 for (;;) 106 cpu_relax(); 107 } 108 109 void lkdtm_HARDLOCKUP(void) 110 { 111 local_irq_disable(); 112 for (;;) 113 cpu_relax(); 114 } 115 116 void lkdtm_SPINLOCKUP(void) 117 { 118 /* Must be called twice to trigger. */ 119 spin_lock(&lock_me_up); 120 /* Let sparse know we intended to exit holding the lock. */ 121 __release(&lock_me_up); 122 } 123 124 void lkdtm_HUNG_TASK(void) 125 { 126 set_current_state(TASK_UNINTERRUPTIBLE); 127 schedule(); 128 } 129 130 void lkdtm_ATOMIC_UNDERFLOW(void) 131 { 132 atomic_t under = ATOMIC_INIT(INT_MIN); 133 134 pr_info("attempting good atomic increment\n"); 135 atomic_inc(&under); 136 atomic_dec(&under); 137 138 pr_info("attempting bad atomic underflow\n"); 139 atomic_dec(&under); 140 } 141 142 void lkdtm_ATOMIC_OVERFLOW(void) 143 { 144 atomic_t over = ATOMIC_INIT(INT_MAX); 145 146 pr_info("attempting good atomic decrement\n"); 147 atomic_dec(&over); 148 atomic_inc(&over); 149 150 pr_info("attempting bad atomic overflow\n"); 151 atomic_inc(&over); 152 } 153 154 static void test_poison_ptr(void *base, const char *desc) 155 { 156 unsigned int *ptr, bias, val; 157 unsigned long uaddr; 158 159 /* We'd rather not export mmap_min_addr, so use the default instead */ > 160 bias = PAGE_ALIGN(CONFIG_DEFAULT_MMAP_MIN_ADDR); 161 162 uaddr = vm_mmap(NULL, bias, PAGE_SIZE, PROT_READ | PROT_WRITE, 163 MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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