git: 7c1baa8ab3f5 - main - stress2: Added a syzkaller reproducer
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Date: Tue, 05 Apr 2022 08:48:00 UTC
The branch main has been updated by pho:
URL: https://cgit.FreeBSD.org/src/commit/?id=7c1baa8ab3f50a7ad5980b2f4bd9dba4c326d946
commit 7c1baa8ab3f50a7ad5980b2f4bd9dba4c326d946
Author: Peter Holm <pho@FreeBSD.org>
AuthorDate: 2022-04-05 08:47:27 +0000
Commit: Peter Holm <pho@FreeBSD.org>
CommitDate: 2022-04-05 08:47:27 +0000
stress2: Added a syzkaller reproducer
---
tools/test/stress2/misc/all.exclude | 1 +
tools/test/stress2/misc/syzkaller50.sh | 169 +++++++++++++++++++++++++++++++++
2 files changed, 170 insertions(+)
diff --git a/tools/test/stress2/misc/all.exclude b/tools/test/stress2/misc/all.exclude
index 67c9fa787ba9..b951e0763ff2 100644
--- a/tools/test/stress2/misc/all.exclude
+++ b/tools/test/stress2/misc/all.exclude
@@ -75,6 +75,7 @@ syzkaller42.sh WiP 20210613
syzkaller43.sh WiP 20210906
syzkaller46.sh WiP 20210925
syzkaller47.sh WiP 20210925
+syzkaller50.sh panic: Assertion done != job_total_nbytes failed at ... 20220405
truss3.sh WiP 20200915
unionfs9.sh https://people.freebsd.org/~pho/stress/log/log0226.txt 20220111
unionfs14.sh WiP 20220111
diff --git a/tools/test/stress2/misc/syzkaller50.sh b/tools/test/stress2/misc/syzkaller50.sh
new file mode 100755
index 000000000000..4acc144503b9
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller50.sh
@@ -0,0 +1,169 @@
+#!/bin/sh
+
+# panic: Assertion done != job_total_nbytes failed at ../../../kern/sys_socket.c:670
+# cpuid = 10
+# time = 1649059964
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe069a27fd70
+# vpanic() at vpanic+0x17f/frame 0xfffffe069a27fdc0
+# panic() at panic+0x43/frame 0xfffffe069a27fe20
+# soaio_process_sb() at soaio_process_sb+0x751/frame 0xfffffe069a27feb0
+# soaio_kproc_loop() at soaio_kproc_loop+0xa9/frame 0xfffffe069a27fef0
+# fork_exit() at fork_exit+0x80/frame 0xfffffe069a27ff30
+# fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe069a27ff30
+# --- trap 0xc, rip = 0x36633df4a5ca, rsp = 0x36633cd66d98, rbp = 0x36633cd66db0 ---
+# KDB: enter: panic
+# [ thread pid 36460 tid 546462 ]
+# Stopped at kdb_enter+0x37: movq $0,0x127b48e(%rip)
+# db> x/s version
+# version: FreeBSD 14.0-CURRENT #0 main-n254248-88b3e65fcff2a: Sun Apr 3 11:21:34 CEST 2022\012 pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO\012
+# db>
+
+[ `uname -p` != "amd64" ] && exit 0
+
+. ../default.cfg
+cat > /tmp/syzkaller50.c <<EOF
+// https://syzkaller.appspot.com/bug?id=3d4fdc415d285b4de0dbf5709b4f2bb451a0a382
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// Reported-by: syzbot+3b4dc5d1d63e9bd01eda@syzkaller.appspotmail.com
+
+#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[2] = {0xffffffffffffffff, 0xffffffffffffffff};
+
+void execute_one(void)
+{
+ intptr_t res = 0;
+ res = syscall(SYS_socket, 0x1cul, 1ul, 0x84);
+ if (res != -1)
+ r[0] = res;
+ *(uint8_t*)0x20000240 = 0x1c;
+ *(uint8_t*)0x20000241 = 0x1c;
+ *(uint16_t*)0x20000242 = htobe16(0x4e23);
+ *(uint32_t*)0x20000244 = 0;
+ *(uint64_t*)0x20000248 = htobe64(0);
+ *(uint64_t*)0x20000250 = htobe64(1);
+ *(uint32_t*)0x20000258 = 0;
+ syscall(SYS_bind, r[0], 0x20000240ul, 0x1cul);
+ *(uint8_t*)0x20000080 = 0x1c;
+ *(uint8_t*)0x20000081 = 0x1c;
+ *(uint16_t*)0x20000082 = htobe16(0x4e23);
+ *(uint32_t*)0x20000084 = 0;
+ *(uint64_t*)0x20000088 = htobe64(0);
+ *(uint64_t*)0x20000090 = htobe64(1);
+ *(uint32_t*)0x20000098 = 0;
+ syscall(SYS_connect, r[0], 0x20000080ul, 0x1cul);
+ *(uint32_t*)0x20000000 = r[0];
+ *(uint64_t*)0x20000008 = 0;
+ *(uint64_t*)0x20000010 = 0x200002c0;
+ *(uint64_t*)0x20000018 = 0;
+ *(uint32_t*)0x20000020 = 0;
+ *(uint32_t*)0x20000024 = 0;
+ *(uint64_t*)0x20000028 = 0;
+ *(uint32_t*)0x20000030 = 0;
+ *(uint32_t*)0x20000034 = 0;
+ *(uint64_t*)0x20000038 = 0;
+ *(uint64_t*)0x20000040 = 0;
+ *(uint64_t*)0x20000048 = 0;
+ *(uint32_t*)0x20000050 = 0;
+ *(uint32_t*)0x20000054 = 0;
+ *(uint32_t*)0x20000058 = 0;
+ *(uint32_t*)0x20000060 = 0;
+ syscall(SYS_aio_write, 0x20000000ul);
+ res = syscall(SYS_fcntl, r[0], 0ul, r[0]);
+ if (res != -1)
+ r[1] = res;
+ *(uint32_t*)0x20001540 = 0;
+ memset((void*)0x20001544, 6, 1);
+ syscall(SYS_setsockopt, r[1], 0x84, 0x901, 0x20001540ul, 8ul);
+}
+int main(void)
+{
+ syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
+ loop();
+ return 0;
+}
+EOF
+mycc -o /tmp/syzkaller50 -Wall -Wextra -O0 /tmp/syzkaller50.c || exit 1
+
+kldstat | grep -q sctp || { kldload sctp.ko && loaded=1; }
+
+(cd ../testcases/swap; ./swap -t 3m -i 10 -l 100) &
+for i in `jot 3`; do
+ (cd /tmp; timeout 3m ./syzkaller50) &
+ pids="$pids $!"
+done
+for pid in $pids; do
+ wait $pid
+done
+while pkill swap; do :; done
+wait
+
+rm -rf /tmp/syzkaller50 syzkaller50.c /tmp/syzkaller.*
+[ $loaded ] && kldunload sctp.ko
+exit 0