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authorPeter Holm <pho@FreeBSD.org>2021-05-03 07:05:32 +0000
committerPeter Holm <pho@FreeBSD.org>2021-05-03 07:05:32 +0000
commita7d46ad0870987c2fdf93a30507f61ca8d82babe (patch)
tree4d58c57effccf55dcaf7cc55b2e29ac371d512f3 /tools
parent573bd33a33b6b38724c9c986355452a6d23583e5 (diff)
downloadsrc-a7d46ad0870987c2fdf93a30507f61ca8d82babe.tar.gz
src-a7d46ad0870987c2fdf93a30507f61ca8d82babe.zip
stress2: Added a syzkaller reproducer
Diffstat (limited to 'tools')
-rwxr-xr-xtools/test/stress2/misc/syzkaller34.sh119
1 files changed, 119 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/syzkaller34.sh b/tools/test/stress2/misc/syzkaller34.sh
new file mode 100755
index 000000000000..c426fef129b1
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller34.sh
@@ -0,0 +1,119 @@
+#!/bin/sh
+
+# Fixed by git: 208256579804 - main - O_PATH: disable kqfilter for fifos
+# Submitted by markj@
+
+[ `uname -p` != "amd64" ] && exit 0
+
+. ../default.cfg
+cat > /tmp/syzkaller34.c <<EOF
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+
+#include <pwd.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/endian.h>
+#include <sys/syscall.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+static void kill_and_wait(int pid, int* status)
+{
+ kill(pid, SIGKILL);
+ while (waitpid(-1, status, 0) != pid) {
+ }
+}
+
+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 void execute_one(void);
+
+#define WAIT_FLAGS 0
+
+static void loop(void)
+{
+ int iter = 0;
+ for (;; iter++) {
+ int pid = fork();
+ if (pid < 0)
+ exit(1);
+ if (pid == 0) {
+ 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 < 5000) {
+ continue;
+ }
+ kill_and_wait(pid, &status);
+ break;
+ }
+ }
+}
+
+uint64_t r[1] = {0xffffffffffffffff};
+
+void execute_one(void)
+{
+ intptr_t res = 0;
+ memcpy((void*)0x20000000, "./file0\000", 8);
+ syscall(SYS_mknodat, 0xffffff9c, 0x20000000ul, 0x1000ul, 0ul);
+ memcpy((void*)0x20000040, "./file0\000", 8);
+ syscall(SYS_open, 0x20000040ul, 0x400000ul, 0x72ul);
+ res = syscall(SYS_kqueue);
+ if (res != -1)
+ r[0] = res;
+ *(uint64_t*)0x20000100 = 3;
+ *(uint16_t*)0x20000108 = -1;
+ *(uint16_t*)0x2000010a = 0x4015;
+ *(uint32_t*)0x2000010c = 0;
+ *(uint64_t*)0x20000110 = 0x400000000;
+ *(uint64_t*)0x20000118 = 5;
+ *(uint64_t*)0x20000120 = 4;
+ *(uint64_t*)0x20000128 = 0;
+ *(uint64_t*)0x20000130 = 0;
+ *(uint64_t*)0x20000138 = 0;
+ syscall(SYS_kevent, r[0], 0x20000100ul, 0x2cul, 0ul, 0ul, 0ul);
+}
+int main(void)
+{
+ syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
+ loop();
+ return 0;
+}
+
+
+EOF
+mycc -o /tmp/syzkaller34 -Wall -Wextra -O0 /tmp/syzkaller34.c ||
+ exit 1
+
+(cd /tmp; timeout 3m ./syzkaller34)
+
+rm -rf /tmp/syzkaller34 syzkaller34.c /tmp/syzkaller.*
+exit 0