tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.uaccess head: 8ff789cacc36a22e0a4818f5b080973b47aeb287 commit: ba41252eb5efc560e73a44061206ddd01965f5ea [94/110] compat statfs: switch to copy_to_user() config: x86_64-randconfig-x019-201723 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout ba41252eb5efc560e73a44061206ddd01965f5ea # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): fs/statfs.c: In function 'put_compat_statfs': >> fs/statfs.c:261:9: error: incompatible type for argument 1 of 'memset' memset(buf, 0, sizeof(struct compat_statfs)); ^~~ In file included from arch/x86/include/asm/string.h:4:0, from include/linux/string.h:18, from include/linux/bitmap.h:8, from include/linux/cpumask.h:11, from arch/x86/include/asm/cpumask.h:4, from arch/x86/include/asm/msr.h:10, from arch/x86/include/asm/processor.h:20, from arch/x86/include/asm/cpufeature.h:4, from arch/x86/include/asm/thread_info.h:52, from include/linux/thread_info.h:37, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:80, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from arch/x86/include/uapi/asm/signal.h:6, from arch/x86/include/asm/signal.h:35, from include/uapi/linux/signal.h:4, from include/linux/signal_types.h:9, from include/linux/signal.h:5, from include/linux/syscalls.h:74, from fs/statfs.c:1: arch/x86/include/asm/string_64.h:56:7: note: expected 'void *' but argument is of type 'struct compat_statfs' void *memset(void *s, int c, size_t n); ^~~~~~ >> fs/statfs.c:274:25: error: incompatible type for argument 2 of 'copy_to_user' if (copy_to_user(ubuf, buf, sizeof(struct compat_statfs))) ^~~ In file included from include/linux/poll.h:11:0, from include/linux/ring_buffer.h:7, from include/linux/trace_events.h:5, from include/trace/syscall.h:6, from include/linux/syscalls.h:82, from fs/statfs.c:1: include/linux/uaccess.h:164:1: note: expected 'const void *' but argument is of type 'struct compat_statfs' copy_to_user(void __user *to, const void *from, unsigned long n) ^~~~~~~~~~~~ fs/statfs.c: In function 'put_compat_statfs64': fs/statfs.c:317:9: error: incompatible type for argument 1 of 'memset' memset(buf, 0, sizeof(struct compat_statfs)); ^~~ In file included from arch/x86/include/asm/string.h:4:0, from include/linux/string.h:18, from include/linux/bitmap.h:8, from include/linux/cpumask.h:11, from arch/x86/include/asm/cpumask.h:4, from arch/x86/include/asm/msr.h:10, from arch/x86/include/asm/processor.h:20, from arch/x86/include/asm/cpufeature.h:4, from arch/x86/include/asm/thread_info.h:52, from include/linux/thread_info.h:37, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:80, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from arch/x86/include/uapi/asm/signal.h:6, from arch/x86/include/asm/signal.h:35, from include/uapi/linux/signal.h:4, from include/linux/signal_types.h:9, from include/linux/signal.h:5, from include/linux/syscalls.h:74, from fs/statfs.c:1: arch/x86/include/asm/string_64.h:56:7: note: expected 'void *' but argument is of type 'struct compat_statfs64' void *memset(void *s, int c, size_t n); ^~~~~~ fs/statfs.c:330:25: error: incompatible type for argument 2 of 'copy_to_user' if (copy_to_user(ubuf, buf, sizeof(struct compat_statfs))) ^~~ In file included from include/linux/poll.h:11:0, from include/linux/ring_buffer.h:7, from include/linux/trace_events.h:5, from include/trace/syscall.h:6, from include/linux/syscalls.h:82, from fs/statfs.c:1: include/linux/uaccess.h:164:1: note: expected 'const void *' but argument is of type 'struct compat_statfs64' copy_to_user(void __user *to, const void *from, unsigned long n) ^~~~~~~~~~~~ vim +/memset +261 fs/statfs.c 255 && (kbuf->f_files & 0xffffffff00000000ULL)) 256 return -EOVERFLOW; 257 if (kbuf->f_ffree != 0xffffffffffffffffULL 258 && (kbuf->f_ffree & 0xffffffff00000000ULL)) 259 return -EOVERFLOW; 260 } > 261 memset(buf, 0, sizeof(struct compat_statfs)); 262 buf.f_type = kbuf->f_type; 263 buf.f_bsize = kbuf->f_bsize; 264 buf.f_blocks = kbuf->f_blocks; 265 buf.f_bfree = kbuf->f_bfree; 266 buf.f_bavail = kbuf->f_bavail; 267 buf.f_files = kbuf->f_files; 268 buf.f_ffree = kbuf->f_ffree; 269 buf.f_namelen = kbuf->f_namelen; 270 buf.f_fsid.val[0] = kbuf->f_fsid.val[0]; 271 buf.f_fsid.val[1] = kbuf->f_fsid.val[1]; 272 buf.f_frsize = kbuf->f_frsize; 273 buf.f_flags = kbuf->f_flags; > 274 if (copy_to_user(ubuf, buf, sizeof(struct compat_statfs))) 275 return -EFAULT; 276 return 0; 277 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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