diff options
| -rw-r--r-- | test/Makefile | 6 | ||||
| -rw-r--r-- | test/a4c0b3decb33-test.c | 172 |
2 files changed, 176 insertions, 2 deletions
diff --git a/test/Makefile b/test/Makefile index 52b4c9e..98f863c 100644 --- a/test/Makefile +++ b/test/Makefile @@ -4,14 +4,14 @@ override CFLAGS += -Wall -D_GNU_SOURCE -L../src/ all_targets += poll poll-cancel ring-leak fsync io_uring_setup io_uring_register \ io_uring_enter nop sq-full cq-full 35fa71a030ca-test \ 917257daa0fe-test b19062a56726-test eeed8b54e0df-test link \ - send_recvmsg + send_recvmsg a4c0b3decb33-test all: $(all_targets) test_srcs := poll.c poll-cancel.c ring-leak.c fsync.c io_uring_setup.c \ io_uring_register.c io_uring_enter.c nop.c sq-full.c cq-full.c \ 35fa71a030ca-test.c 917257daa0fe-test.c b19062a56726-test.c \ - eeed8b54e0df-test.c link.c send_recvmsg.c + eeed8b54e0df-test.c link.c send_recvmsg.c a4c0b3decb33-test.c test_objs := $(patsubst %.c,%.ol,$(test_srcs)) @@ -47,6 +47,8 @@ link: link.c $(CC) $(CFLAGS) -o $@ link.c -luring send_recvmsg: send_recvmsg.c $(CC) $(CFLAGS) -o $@ send_recvmsg.c -luring +a4c0b3decb33-test: a4c0b3decb33-test.c + $(CC) $(CFLAGS) -o $@ a4c0b3decb33-test.c -luring clean: rm -f $(all_targets) $(test_objs) diff --git a/test/a4c0b3decb33-test.c b/test/a4c0b3decb33-test.c new file mode 100644 index 0000000..e1e0706 --- /dev/null +++ b/test/a4c0b3decb33-test.c @@ -0,0 +1,172 @@ +// autogenerated by syzkaller (https://github.com/google/syzkaller) + +#include <dirent.h> +#include <endian.h> +#include <errno.h> +#include <fcntl.h> +#include <signal.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/prctl.h> +#include <sys/stat.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <time.h> +#include <unistd.h> + +static void sleep_ms(uint64_t ms) +{ + usleep(ms * 1000); +} + +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; +} + +static bool write_file(const char* file, const char* what, ...) +{ + char buf[1024]; + va_list args; + va_start(args, what); + vsnprintf(buf, sizeof(buf), what, args); + va_end(args); + buf[sizeof(buf) - 1] = 0; + int len = strlen(buf); + int fd = open(file, O_WRONLY | O_CLOEXEC); + if (fd == -1) + return false; + if (write(fd, buf, len) != len) { + int err = errno; + close(fd); + errno = err; + return false; + } + close(fd); + return true; +} + +static void kill_and_wait(int pid, int* status) +{ + kill(-pid, SIGKILL); + kill(pid, SIGKILL); + int i; + for (i = 0; i < 100; i++) { + if (waitpid(-1, status, WNOHANG | __WALL) == pid) + return; + usleep(1000); + } + DIR* dir = opendir("/sys/fs/fuse/connections"); + if (dir) { + for (;;) { + struct dirent* ent = readdir(dir); + if (!ent) + break; + if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) + continue; + char abort[300]; + snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", + ent->d_name); + int fd = open(abort, O_WRONLY); + if (fd == -1) { + continue; + } + if (write(fd, abort, 1) < 0) { + } + close(fd); + } + closedir(dir); + } else { + } + while (waitpid(-1, status, __WALL) != pid) { + } +} + +static void setup_test() +{ + prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); + setpgrp(); + write_file("/proc/self/oom_score_adj", "1000"); +} + +static void execute_one(void); + +#define WAIT_FLAGS __WALL + +static void loop(void) +{ + int iter; + for (iter = 0;; iter++) { + int pid = fork(); + if (pid < 0) + exit(1); + if (pid == 0) { + setup_test(); + execute_one(); + exit(0); + } + int status = 0; + uint64_t start = current_time_ms(); + for (;;) { + if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) + break; + sleep_ms(1); + if (current_time_ms() - start < 5 * 1000) + continue; + kill_and_wait(pid, &status); + break; + } + } +} + +#ifndef __NR_io_uring_setup +#define __NR_io_uring_setup 425 +#endif + +void execute_one(void) +{ + *(uint32_t*)0x20000080 = 0; + *(uint32_t*)0x20000084 = 0; + *(uint32_t*)0x20000088 = 3; + *(uint32_t*)0x2000008c = 3; + *(uint32_t*)0x20000090 = 0x175; + *(uint32_t*)0x20000094 = 0; + *(uint32_t*)0x20000098 = 0; + *(uint32_t*)0x2000009c = 0; + *(uint32_t*)0x200000a0 = 0; + *(uint32_t*)0x200000a4 = 0; + *(uint32_t*)0x200000a8 = 0; + *(uint32_t*)0x200000ac = 0; + *(uint32_t*)0x200000b0 = 0; + *(uint32_t*)0x200000b4 = 0; + *(uint32_t*)0x200000b8 = 0; + *(uint32_t*)0x200000bc = 0; + *(uint32_t*)0x200000c0 = 0; + *(uint32_t*)0x200000c4 = 0; + *(uint64_t*)0x200000c8 = 0; + *(uint32_t*)0x200000d0 = 0; + *(uint32_t*)0x200000d4 = 0; + *(uint32_t*)0x200000d8 = 0; + *(uint32_t*)0x200000dc = 0; + *(uint32_t*)0x200000e0 = 0; + *(uint32_t*)0x200000e4 = 0; + *(uint32_t*)0x200000e8 = 0; + *(uint32_t*)0x200000ec = 0; + *(uint64_t*)0x200000f0 = 0; + syscall(__NR_io_uring_setup, 0x983, 0x20000080); +} + +int main(void) +{ + syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); + loop(); + return 0; +} |