https://bugzilla.kernel.org/show_bug.cgi?id=218850 --- Comment #2 from Chi (zhangchi_seg@xxxxxxxxxxxxxxxx) --- Could you please help me review this report? I am still able to reproduce the issue with the following test case: ``` #include <assert.h> #include <string.h> #include <stdlib.h> #include <stdio.h> #include <stdarg.h> #include <stddef.h> #include <unistd.h> #include <pthread.h> #include <errno.h> #include <dirent.h> #include <string> #include <sys/mount.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <sys/wait.h> #include <sys/xattr.h> #include <sys/mount.h> #include <sys/statfs.h> #include <fcntl.h> #define ALIGN 4096 void* align_alloc(size_t size) { void *ptr = NULL; int ret = posix_memalign(&ptr, ALIGN, size); if (ret) { printf("align error\n"); exit(1); } return ptr; } int main() { char *buf_15 = (char*)align_alloc(4096*20); memset(buf_15, 'a', 4096*20); char *buf_4 = (char*)align_alloc(4096*20); memset(buf_4, 'a', 4096*20); mount("/dev/loop0", "/root/mnt", "ext4", 0, ""); creat("/root/mnt/a", S_IRWXG); link("/root/mnt/a", "/root/mnt/b"); int fd_a = open("/root/mnt/a", O_RDWR); int fd_b = open("/root/mnt/b", O_RDWR | O_DIRECT); lseek(fd_a, 100, SEEK_SET); write(fd_a, buf_15, 9900); read(fd_b, buf_4, 73728); int state = write(fd_b, buf_15, 65536); if (state == -1) { printf("write failure\n"); } return 0; } ``` -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
