test/sqpoll-cancel-hang: remove test

This is one of those awful syzbot based tests, that make all sorts of
arch assumptions. We've previously disabled it on some archs, but
apparently it's segfaulting on others now.

Just remove it, it's served its purpose.

https://github.com/axboe/liburing/issues/1134
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2 files changed, 0 insertions, 169 deletions

diff --git a/test/Makefile b/test/Makefile
index 11d7867..2742ef4 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -183,7 +183,6 @@ test_srcs := \
 	splice.c \
 	sq-full.c \
 	sq-full-cpp.cc \
-	sqpoll-cancel-hang.c \
 	sqpoll-disable-exit.c \
 	sq-poll-dup.c \
 	sqpoll-exit-hang.c \
diff --git a/test/sqpoll-cancel-hang.c b/test/sqpoll-cancel-hang.c
deleted file mode 100644
index 431fecb..0000000
--- a/test/sqpoll-cancel-hang.c
+++ /dev/null
@@ -1,168 +0,0 @@
-/* SPDX-License-Identifier: MIT */
-#include <fcntl.h>
-#include <signal.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/wait.h>
-#include <time.h>
-#include <unistd.h>
-#include "liburing.h"
-#include "helpers.h"
-#include "../src/syscall.h"
-
-/*
- * This syzbot test is known broken on some archs, just allow the ones that
- * are regularly tested.
- */
-#if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
-    defined(__aarch64__)
-
-static uint64_t current_time_ms(void)
-{
-    struct timespec ts;
-    if (clock_gettime(CLOCK_MONOTONIC, &ts))
-        exit(1);
-    return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
-}
-
-#define SIZEOF_IO_URING_SQE 64
-#define SIZEOF_IO_URING_CQE 16
-#define SQ_TAIL_OFFSET 64
-#define SQ_RING_MASK_OFFSET 256
-#define SQ_RING_ENTRIES_OFFSET 264
-#define CQ_RING_ENTRIES_OFFSET 268
-#define CQ_CQES_OFFSET 320
-
-#define IORING_OFF_SQES 0x10000000ULL
-
-static void kill_and_wait(int pid, int* status)
-{
-    kill(-pid, SIGKILL);
-    kill(pid, SIGKILL);
-    while (waitpid(-1, status, __WALL) != pid) {
-    }
-}
-
-#define WAIT_FLAGS __WALL
-
-static uint64_t r[3] = {0xffffffffffffffff, 0x0, 0x0};
-
-static long syz_io_uring_setup(volatile long a0, volatile long a1,
-volatile long a2, volatile long a3, volatile long a4, volatile long
-a5)
-{
-    uint32_t entries = (uint32_t)a0;
-    struct io_uring_params* setup_params = (struct io_uring_params*)a1;
-    void* vma1 = (void*)a2;
-    void* vma2 = (void*)a3;
-    void** ring_ptr_out = (void**)a4;
-    void** sqes_ptr_out = (void**)a5;
-    uint32_t fd_io_uring = __sys_io_uring_setup(entries, setup_params);
-    uint32_t sq_ring_sz = setup_params->sq_off.array +
-setup_params->sq_entries * sizeof(uint32_t);
-    uint32_t cq_ring_sz = setup_params->cq_off.cqes +
-setup_params->cq_entries * SIZEOF_IO_URING_CQE;
-    uint32_t ring_sz = sq_ring_sz > cq_ring_sz ? sq_ring_sz : cq_ring_sz;
-    *ring_ptr_out = mmap(vma1, ring_sz, PROT_READ | PROT_WRITE,
-MAP_SHARED | MAP_POPULATE | MAP_FIXED, fd_io_uring,
-IORING_OFF_SQ_RING);
-    uint32_t sqes_sz = setup_params->sq_entries * SIZEOF_IO_URING_SQE;
-    *sqes_ptr_out = mmap(vma2, sqes_sz, PROT_READ | PROT_WRITE,
-MAP_SHARED | MAP_POPULATE | MAP_FIXED, fd_io_uring, IORING_OFF_SQES);
-    return fd_io_uring;
-}
-
-static long syz_io_uring_submit(volatile long a0, volatile long a1,
-volatile long a2, volatile long a3)
-{
-    char* ring_ptr = (char*)a0;
-    char* sqes_ptr = (char*)a1;
-    char* sqe = (char*)a2;
-    uint32_t sqes_index = (uint32_t)a3;
-    uint32_t sq_ring_entries = *(uint32_t*)(ring_ptr + SQ_RING_ENTRIES_OFFSET);
-    uint32_t cq_ring_entries = *(uint32_t*)(ring_ptr + CQ_RING_ENTRIES_OFFSET);
-    uint32_t sq_array_off = (CQ_CQES_OFFSET + cq_ring_entries *
-SIZEOF_IO_URING_CQE + 63) & ~63;
-    if (sq_ring_entries)
-        sqes_index %= sq_ring_entries;
-    char* sqe_dest = sqes_ptr + sqes_index * SIZEOF_IO_URING_SQE;
-    memcpy(sqe_dest, sqe, SIZEOF_IO_URING_SQE);
-    uint32_t sq_ring_mask = *(uint32_t*)(ring_ptr + SQ_RING_MASK_OFFSET);
-    uint32_t* sq_tail_ptr = (uint32_t*)(ring_ptr + SQ_TAIL_OFFSET);
-    uint32_t sq_tail = *sq_tail_ptr & sq_ring_mask;
-    uint32_t sq_tail_next = *sq_tail_ptr + 1;
-    uint32_t* sq_array = (uint32_t*)(ring_ptr + sq_array_off);
-    *(sq_array + sq_tail) = sqes_index;
-    __atomic_store_n(sq_tail_ptr, sq_tail_next, __ATOMIC_RELEASE);
-    return 0;
-}
-
-
-static void trigger_bug(void)
-{
-    intptr_t res = 0;
-    *(uint32_t*)0x20000204 = 0;
-    *(uint32_t*)0x20000208 = 2;
-    *(uint32_t*)0x2000020c = 0;
-    *(uint32_t*)0x20000210 = 0;
-    *(uint32_t*)0x20000218 = -1;
-    memset((void*)0x2000021c, 0, 12);
-    res = -1;
-    res = syz_io_uring_setup(0x7987, 0x20000200, 0x20400000, 0x20ffd000, 0x200000c0, 0x200001c0);
-    if (res != -1) {
-        r[0] = res;
-        r[1] = *(uint64_t*)0x200000c0;
-        r[2] = *(uint64_t*)0x200001c0;
-    }
-    *(uint8_t*)0x20000180 = 0xb;
-    *(uint8_t*)0x20000181 = 1;
-    *(uint16_t*)0x20000182 = 0;
-    *(uint32_t*)0x20000184 = 0;
-    *(uint64_t*)0x20000188 = 4;
-    *(uint64_t*)0x20000190 = 0x20000140;
-    *(uint64_t*)0x20000140 = 0x77359400;
-    *(uint64_t*)0x20000148 = 0;
-    *(uint32_t*)0x20000198 = 1;
-    *(uint32_t*)0x2000019c = 0;
-    *(uint64_t*)0x200001a0 = 0;
-    *(uint16_t*)0x200001a8 = 0;
-    *(uint16_t*)0x200001aa = 0;
-    memset((void*)0x200001ac, 0, 20);
-    syz_io_uring_submit(r[1], r[2], 0x20000180, 1);
-    *(uint32_t*)0x20000544 = 0;
-    *(uint32_t*)0x20000548 = 0x36;
-    *(uint32_t*)0x2000054c = 0;
-    *(uint32_t*)0x20000550 = 0;
-    *(uint32_t*)0x20000558 = r[0];
-    memset((void*)0x2000055c, 0, 12);
-
-}
-int main(void)
-{
-    mmap((void *)0x20000000ul, 0x1000000ul, 7ul, MAP_ANON|MAP_PRIVATE, -1, 0ul);
-    int pid = fork();
-    if (pid < 0)
-        exit(1);
-    if (pid == 0) {
-        trigger_bug();
-        exit(0);
-    }
-    int status = 0;
-    uint64_t start = current_time_ms();
-    for (;;) {
-        if (current_time_ms() - start < 1000) {
-            continue;
-        }
-        kill_and_wait(pid, &status);
-        break;
-    }
-    return 0;
-}
-#else
-int main(void)
-{
-	return T_EXIT_SKIP;
-}
-#endif