git: 4e4f49fd4af2 - main - stress2: Added another sigreturn(2) fuzzer test

The branch main has been updated by pho:

URL: https://cgit.FreeBSD.org/src/commit/?id=4e4f49fd4af29eaffe7c1a1d5e61a4a8f2ffeef4

commit 4e4f49fd4af29eaffe7c1a1d5e61a4a8f2ffeef4
Author:     Peter Holm <pho@FreeBSD.org>
AuthorDate: 2022-08-24 11:21:55 +0000
Commit:     Peter Holm <pho@FreeBSD.org>
CommitDate: 2022-08-24 11:21:55 +0000

    stress2: Added another sigreturn(2) fuzzer test
---
 tools/test/stress2/misc/sigreturn2.sh | 69 +++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/tools/test/stress2/misc/sigreturn2.sh b/tools/test/stress2/misc/sigreturn2.sh
new file mode 100755
index 000000000000..610922a809ab
--- /dev/null
+++ b/tools/test/stress2/misc/sigreturn2.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+
+# A sigreturn(2) syscall fuzzer
+
+# panic: vm_fault_lookup: fault on nofault entry, addr: 0
+# cpuid = 0
+# time = 1661248103
+# KDB: stack backtrace:
+# db_trace_self_wrapper(e,27e1dae0,27e1dae2,ffc07db8,c1f0490,...) at db_trace_self_wrapper+0x28/frame 0xffc07d24
+# vpanic(150b260,ffc07d60,ffc07d60,ffc07e20,12cb565,...) at vpanic+0xf4/frame 0xffc07d40
+# panic(150b260,14ec2f3,0,149349d,1430,...) at panic+0x14/frame 0xffc07d54
+# vm_fault(1e37000,0,4,0,0) at vm_fault+0x1725/frame 0xffc07e20
+# vm_fault_trap(1e37000,3b,4,0,0,0) at vm_fault_trap+0x52/frame 0xffc07e48
+# trap_pfault(3b,0,0) at trap_pfault+0x176/frame 0xffc07e94
+# trap(ffc07f6c,8,28,28,1915b000,...) at trap+0x2d9/frame 0xffc07f60
+# calltrap() at 0xffc031ef/frame 0xffc07f60
+# --- trap 0xc, eip = 0x3b, esp = 0xffc07fac, ebp = 0xffc0340c ---
+# (null)() at 0x3b/frame 0xffc0340c
+# KDB: enter: panic
+# [ thread pid 26126 tid 120029 ]
+# Stopped at      kdb_enter+0x34: movl    $0,kdb_why
+# db> x/s version
+# version: FreeBSD 14.0-CURRENT #0 ast-n257558-eb20af97a66-dirty: Mon Aug 22 17:53:22 CEST 2022
+# pho@mercat1.netperf.freebsd.org:/media/obj/var/tmp/deviant3/i386.i386/sys/PHO
+# db> 
+
+inc=/usr/include/sys/syscall.h
+[ -f $inc ] || exit 0
+num=`awk '/SYS_sigreturn/ {print $NF}' < $inc`
+old=`grep -E 'sigreturn \*' < $inc | \
+    sed 's/.* \([0-9]\{1,3\}\) .*/\1/' | tr '\n' ' '`
+num="$num $old"
+
+start=`date +%s`
+while [ $((`date +%s` - start)) -lt 180 ]; do
+	for i in $num; do
+		echo "noswap=1 ./syscall4.sh $i"
+		noswap=1 ./syscall4.sh $i
+	done
+done
+
+exit 0