diff options
Diffstat (limited to 'tools/test/stress2/misc/syzkaller22.sh')
| -rwxr-xr-x | tools/test/stress2/misc/syzkaller22.sh | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/syzkaller22.sh b/tools/test/stress2/misc/syzkaller22.sh new file mode 100755 index 000000000000..90dd1f4c326d --- /dev/null +++ b/tools/test/stress2/misc/syzkaller22.sh @@ -0,0 +1,69 @@ +#!/bin/sh + +# panic: Assertion *buflen >= 2 failed at ../../../kern/vfs_cache.c:2837 +# cpuid = 21 +# time = 1598296274 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0149a9e860 +# vpanic() at vpanic+0x182/frame 0xfffffe0149a9e8b0 +# panic() at panic+0x43/frame 0xfffffe0149a9e910 +# vn_fullpath_any_smr() at vn_fullpath_any_smr+0x4df/frame 0xfffffe0149a9e980 +# sys___realpathat() at sys___realpathat+0x20b/frame 0xfffffe0149a9ead0 +# amd64_syscall() at amd64_syscall+0x159/frame 0xfffffe0149a9ebf0 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0149a9ebf0 +# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x8004294ea, rsp = 0x7fffffffe548, rbp = 0x7fffffffe580 --- +# KDB: enter: panic +# [ thread pid 2831 tid 100306 ] +# Stopped at kdb_enter+0x37: movq $0,0x10b4246(%rip) +# db> x/s version +# version: FreeBSD 13.0-CURRENT #0 r364722: Mon Aug 24 21:04:09 CEST 2020 +# pho@t2.osted.lan:/usr/src/sys/amd64/compile/PHO\012 +# db> + +[ `uname -p` != "amd64" ] && exit 0 + +# Obtained from markj (syzkaller). +# Fixed by r364723. + +. ../default.cfg +kldstat -v | grep -q sctp || kldload sctp.ko +cat > /tmp/syzkaller22.c <<EOF +// autogenerated by syzkaller (https://github.com/google/syzkaller) + +#define _GNU_SOURCE + +#include <pwd.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 <unistd.h> + +uint64_t r[1] = {0xffffffffffffffff}; + +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); + intptr_t res = 0; + memcpy((void*)0x20000000, "./file0\000", 8); + syscall(SYS_open, 0x20000000ul, 0x200645ul, 0ul); + memcpy((void*)0x20000000, ".\000", 2); + res = syscall(SYS_open, 0x20000000ul, 0ul, 0ul); + if (res != -1) + r[0] = res; + memcpy((void*)0x20000240, "./file0\000", 8); + syscall(SYS___realpathat, r[0], 0x20000240ul, 0x20000280ul, 8ul, 0ul); + return 0; +} +EOF +mycc -o /tmp/syzkaller22 -Wall -Wextra -O0 /tmp/syzkaller22.c || + exit 1 + +(cd /tmp; timeout 1m ./syzkaller22) + +rm -f /tmp/syzkaller22 /tmp/syzkaller22.c /tmp/syzkaller22.core /tmp/file0 +exit 0 |