From owner-dev-commits-src-main@freebsd.org Mon May 3 07:06:05 2021 Return-Path: Delivered-To: dev-commits-src-main@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5FA686292E7; Mon, 3 May 2021 07:06:05 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FYYsn2Gwjz4WPx; Mon, 3 May 2021 07:06:05 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3C8FD1986E; Mon, 3 May 2021 07:06:05 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 143765Zs083317; Mon, 3 May 2021 07:06:05 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 143765RF083316; Mon, 3 May 2021 07:06:05 GMT (envelope-from git) Date: Mon, 3 May 2021 07:06:05 GMT Message-Id: <202105030706.143765RF083316@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Peter Holm Subject: git: a7d46ad08709 - main - stress2: Added a syzkaller reproducer MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: pho X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: a7d46ad0870987c2fdf93a30507f61ca8d82babe Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-main@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for the main branch of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 May 2021 07:06:05 -0000 The branch main has been updated by pho: URL: https://cgit.FreeBSD.org/src/commit/?id=a7d46ad0870987c2fdf93a30507f61ca8d82babe commit a7d46ad0870987c2fdf93a30507f61ca8d82babe Author: Peter Holm AuthorDate: 2021-05-03 07:05:32 +0000 Commit: Peter Holm CommitDate: 2021-05-03 07:05:32 +0000 stress2: Added a syzkaller reproducer --- tools/test/stress2/misc/syzkaller34.sh | 119 +++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) 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 < + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +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