| // KASAN: slab-out-of-bounds Write in tcp_v6_syn_recv_sock (2) |
| // https://syzkaller.appspot.com/bug?id=1cf5af0f331f3f172034f9a9e8209b8dcc09f488 |
| // status:invalid |
| // autogenerated by syzkaller (http://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| #include <endian.h> |
| #include <linux/futex.h> |
| #include <pthread.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| |
| static void execute_one(); |
| extern unsigned long long procid; |
| |
| void loop() |
| { |
| while (1) { |
| execute_one(); |
| } |
| } |
| |
| struct thread_t { |
| int created, running, call; |
| pthread_t th; |
| }; |
| |
| static struct thread_t threads[16]; |
| static void execute_call(int call); |
| static int running; |
| |
| static void* thr(void* arg) |
| { |
| struct thread_t* th = (struct thread_t*)arg; |
| for (;;) { |
| while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) |
| syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0); |
| execute_call(th->call); |
| __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); |
| __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE); |
| syscall(SYS_futex, &th->running, FUTEX_WAKE); |
| } |
| return 0; |
| } |
| |
| static void execute(int num_calls) |
| { |
| int call, thread; |
| running = 0; |
| for (call = 0; call < num_calls; call++) { |
| for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) { |
| struct thread_t* th = &threads[thread]; |
| if (!th->created) { |
| th->created = 1; |
| pthread_attr_t attr; |
| pthread_attr_init(&attr); |
| pthread_attr_setstacksize(&attr, 128 << 10); |
| pthread_create(&th->th, &attr, thr, th); |
| } |
| if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) { |
| th->call = call; |
| __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); |
| __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE); |
| syscall(SYS_futex, &th->running, FUTEX_WAKE); |
| struct timespec ts; |
| ts.tv_sec = 0; |
| ts.tv_nsec = 20 * 1000 * 1000; |
| syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts); |
| if (running) |
| usleep((call == num_calls - 1) ? 10000 : 1000); |
| break; |
| } |
| } |
| } |
| } |
| |
| #ifndef __NR_bpf |
| #define __NR_bpf 321 |
| #endif |
| |
| uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, |
| 0xffffffffffffffff}; |
| unsigned long long procid; |
| void execute_call(int call) |
| { |
| long res; |
| switch (call) { |
| case 0: |
| res = syscall(__NR_socketpair, 0, 0, 0, 0x20000140); |
| if (res != -1) |
| r[0] = *(uint32_t*)0x20000144; |
| break; |
| case 1: |
| res = syscall(__NR_socket, 0xa, 1, 0); |
| if (res != -1) |
| r[1] = res; |
| break; |
| case 2: |
| *(uint16_t*)0x20000080 = 0xa; |
| *(uint16_t*)0x20000082 = htobe16(0x4e22); |
| *(uint32_t*)0x20000084 = 0; |
| *(uint8_t*)0x20000088 = 0; |
| *(uint8_t*)0x20000089 = 0; |
| *(uint8_t*)0x2000008a = 0; |
| *(uint8_t*)0x2000008b = 0; |
| *(uint8_t*)0x2000008c = 0; |
| *(uint8_t*)0x2000008d = 0; |
| *(uint8_t*)0x2000008e = 0; |
| *(uint8_t*)0x2000008f = 0; |
| *(uint8_t*)0x20000090 = 0; |
| *(uint8_t*)0x20000091 = 0; |
| *(uint8_t*)0x20000092 = 0; |
| *(uint8_t*)0x20000093 = 0; |
| *(uint8_t*)0x20000094 = 0; |
| *(uint8_t*)0x20000095 = 0; |
| *(uint8_t*)0x20000096 = 0; |
| *(uint8_t*)0x20000097 = 0; |
| *(uint32_t*)0x20000098 = 0; |
| syscall(__NR_bind, r[1], 0x20000080, 0x1c); |
| break; |
| case 3: |
| syscall(__NR_listen, r[1], 0); |
| break; |
| case 4: |
| res = syscall(__NR_socket, 0xa, 1, 0); |
| if (res != -1) |
| r[2] = res; |
| break; |
| case 5: |
| *(uint32_t*)0x20000040 = 0x80; |
| syscall(__NR_accept, r[1], 0x200001c0, 0x20000040); |
| break; |
| case 6: |
| *(uint16_t*)0x20000000 = 0xa; |
| *(uint16_t*)0x20000002 = htobe16(0x4e22); |
| *(uint32_t*)0x20000004 = 0; |
| *(uint8_t*)0x20000008 = 0; |
| *(uint8_t*)0x20000009 = 0; |
| *(uint8_t*)0x2000000a = 0; |
| *(uint8_t*)0x2000000b = 0; |
| *(uint8_t*)0x2000000c = 0; |
| *(uint8_t*)0x2000000d = 0; |
| *(uint8_t*)0x2000000e = 0; |
| *(uint8_t*)0x2000000f = 0; |
| *(uint8_t*)0x20000010 = 0; |
| *(uint8_t*)0x20000011 = 0; |
| *(uint8_t*)0x20000012 = 0; |
| *(uint8_t*)0x20000013 = 0; |
| *(uint8_t*)0x20000014 = 0; |
| *(uint8_t*)0x20000015 = 0; |
| *(uint8_t*)0x20000016 = 0; |
| *(uint8_t*)0x20000017 = 0; |
| *(uint32_t*)0x20000018 = 0; |
| syscall(__NR_sendto, r[2], 0x20000280, 0xfffffdf7, 0x20000003, 0x20000000, |
| 0x1c); |
| break; |
| case 7: |
| *(uint32_t*)0x20000000 = 0; |
| syscall(__NR_setsockopt, r[0], 0x112, 7, 0x20000000, 4); |
| break; |
| case 8: |
| *(uint32_t*)0x20000280 = 0xf; |
| *(uint32_t*)0x20000284 = 4; |
| *(uint32_t*)0x20000288 = 4; |
| *(uint32_t*)0x2000028c = 0x70; |
| *(uint32_t*)0x20000290 = 0; |
| *(uint32_t*)0x20000294 = -1; |
| *(uint32_t*)0x20000298 = 0; |
| *(uint8_t*)0x2000029c = 0; |
| *(uint8_t*)0x2000029d = 0; |
| *(uint8_t*)0x2000029e = 0; |
| *(uint8_t*)0x2000029f = 0; |
| *(uint8_t*)0x200002a0 = 0; |
| *(uint8_t*)0x200002a1 = 0; |
| *(uint8_t*)0x200002a2 = 0; |
| *(uint8_t*)0x200002a3 = 0; |
| *(uint8_t*)0x200002a4 = 0; |
| *(uint8_t*)0x200002a5 = 0; |
| *(uint8_t*)0x200002a6 = 0; |
| *(uint8_t*)0x200002a7 = 0; |
| *(uint8_t*)0x200002a8 = 0; |
| *(uint8_t*)0x200002a9 = 0; |
| *(uint8_t*)0x200002aa = 0; |
| *(uint8_t*)0x200002ab = 0; |
| res = syscall(__NR_bpf, 0, 0x20000280, 0x2c); |
| if (res != -1) |
| r[3] = res; |
| break; |
| case 9: |
| *(uint32_t*)0x20000180 = r[3]; |
| *(uint64_t*)0x20000188 = 0x20000000; |
| *(uint64_t*)0x20000190 = 0x20000140; |
| *(uint64_t*)0x20000198 = 0; |
| syscall(__NR_bpf, 2, 0x20000180, 0x20); |
| break; |
| } |
| } |
| |
| void execute_one() |
| { |
| execute(10); |
| } |
| |
| int main() |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| for (procid = 0; procid < 8; procid++) { |
| if (fork() == 0) { |
| for (;;) { |
| loop(); |
| } |
| } |
| } |
| sleep(1000000); |
| return 0; |
| } |