| // INFO: rcu detected stall in do_idle |
| // https://syzkaller.appspot.com/bug?id=bfb92f62cc4ed962e2feac704c3c4a6fd9659ba5 |
| // status:open |
| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <endian.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/syscall.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1) |
| |
| #define BITMASK_LEN_OFF(type, bf_off, bf_len) \ |
| (type)(BITMASK_LEN(type, (bf_len)) << (bf_off)) |
| |
| #define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len) \ |
| if ((bf_off) == 0 && (bf_len) == 0) { \ |
| *(type*)(addr) = (type)(val); \ |
| } else { \ |
| type new_val = *(type*)(addr); \ |
| new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len)); \ |
| new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off); \ |
| *(type*)(addr) = new_val; \ |
| } |
| |
| #ifndef __NR_sched_setattr |
| #define __NR_sched_setattr 314 |
| #endif |
| |
| uint64_t r[1] = {0xffffffffffffffff}; |
| |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| long res = 0; |
| *(uint32_t*)0x2001d000 = 1; |
| *(uint32_t*)0x2001d004 = 0x70; |
| *(uint8_t*)0x2001d008 = 0; |
| *(uint8_t*)0x2001d009 = 0; |
| *(uint8_t*)0x2001d00a = 0; |
| *(uint8_t*)0x2001d00b = 0; |
| *(uint32_t*)0x2001d00c = 0; |
| *(uint64_t*)0x2001d010 = 0x7f; |
| *(uint64_t*)0x2001d018 = 0; |
| *(uint64_t*)0x2001d020 = 0; |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 0, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 1, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 2, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 3, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 4, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 5, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 6, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 7, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 8, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 9, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 10, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 11, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 12, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 13, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 14, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 15, 2); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 17, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 18, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 19, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 20, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 21, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 22, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 23, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 24, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 25, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 26, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 27, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 28, 1); |
| STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 29, 35); |
| *(uint32_t*)0x2001d030 = 0; |
| *(uint32_t*)0x2001d034 = 0; |
| *(uint64_t*)0x2001d038 = 0; |
| *(uint64_t*)0x2001d040 = 0; |
| *(uint64_t*)0x2001d048 = 0; |
| *(uint64_t*)0x2001d050 = 0; |
| *(uint32_t*)0x2001d058 = 0; |
| *(uint32_t*)0x2001d05c = 0; |
| *(uint64_t*)0x2001d060 = 0; |
| *(uint32_t*)0x2001d068 = 0; |
| *(uint16_t*)0x2001d06c = 0; |
| *(uint16_t*)0x2001d06e = 0; |
| syscall(__NR_perf_event_open, 0x2001d000, 0, -1, -1, 0); |
| *(uint32_t*)0x20000000 = 0; |
| *(uint32_t*)0x20000004 = 6; |
| *(uint64_t*)0x20000008 = 0; |
| *(uint32_t*)0x20000010 = 0; |
| *(uint32_t*)0x20000014 = 0; |
| *(uint64_t*)0x20000018 = 0x9917; |
| *(uint64_t*)0x20000020 = 0xffff; |
| *(uint64_t*)0x20000028 = 0; |
| syscall(__NR_sched_setattr, 0, 0x20000000, 0); |
| memcpy((void*)0x20001b40, "./file0", 8); |
| syscall(__NR_mkdir, 0x20001b40, 0); |
| memcpy((void*)0x20000040, "./file0", 8); |
| memcpy((void*)0x2000c000, "ramfs", 6); |
| syscall(__NR_mount, 0x20000100, 0x20000040, 0x2000c000, 0, 0x20000140); |
| memcpy((void*)0x20000000, "./file0", 8); |
| syscall(__NR_chdir, 0x20000000); |
| memcpy((void*)0x200000c0, "./file0", 8); |
| res = syscall(__NR_open, 0x200000c0, 0x141042, 0); |
| if (res != -1) |
| r[0] = res; |
| *(uint64_t*)0x20000440 = 0x77359400; |
| *(uint64_t*)0x20000448 = 0; |
| *(uint16_t*)0x20000450 = 0; |
| *(uint16_t*)0x20000452 = 0; |
| *(uint32_t*)0x20000454 = 0; |
| syscall(__NR_write, r[0], 0x20000440, 0x18); |
| *(uint64_t*)0x200001c0 = 0; |
| syscall(__NR_sendfile, r[0], r[0], 0x200001c0, 0x7fffffffffffffff); |
| return 0; |
| } |