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Sat, 18 Mar 2023 09:32:05 GMT (envelope-from git) Date: Sat, 18 Mar 2023 09:32:05 GMT Message-Id: <202303180932.32I9W5ED047126@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: bce30c896db6 - main - stress2: Added two syzkaller reproducers List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org 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: bce30c896db6ffbc1bf2bbd1507c154818202ae0 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by pho: URL: https://cgit.FreeBSD.org/src/commit/?id=bce30c896db6ffbc1bf2bbd1507c154818202ae0 commit bce30c896db6ffbc1bf2bbd1507c154818202ae0 Author: Peter Holm AuthorDate: 2023-03-18 09:31:31 +0000 Commit: Peter Holm CommitDate: 2023-03-18 09:31:31 +0000 stress2: Added two syzkaller reproducers --- tools/test/stress2/misc/all.exclude | 1 + tools/test/stress2/misc/syzkaller64.sh | 328 +++++++++++++++++++++++++++++++++ tools/test/stress2/misc/syzkaller65.sh | 82 +++++++++ 3 files changed, 411 insertions(+) diff --git a/tools/test/stress2/misc/all.exclude b/tools/test/stress2/misc/all.exclude index 8c63a8fc7143..2f4e04473eff 100644 --- a/tools/test/stress2/misc/all.exclude +++ b/tools/test/stress2/misc/all.exclude @@ -66,6 +66,7 @@ syzkaller50.sh panic: Assertion done != job_total_nbytes failed at ... 2022040 syzkaller54.sh panic: td 0xfffffe014f7193a0 is not suspended 20220527 syzkaller55.sh panic: Counter goes negative 20220525 syzkaller59.sh Page fault 20220625 +syzkaller65.sh Waiting for fix 20230318 truss3.sh WiP 20200915 unionfs9.sh https://people.freebsd.org/~pho/stress/log/log0404.txt 20230110 diff --git a/tools/test/stress2/misc/syzkaller64.sh b/tools/test/stress2/misc/syzkaller64.sh new file mode 100755 index 000000000000..c9a88f2184a6 --- /dev/null +++ b/tools/test/stress2/misc/syzkaller64.sh @@ -0,0 +1,328 @@ +#!/bin/sh + +[ `uname -p` != "amd64" ] && exit 0 +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +[ "`sysctl -in kern.features.kasan`" != "1" ] && exit 0 + +. ../default.cfg +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c < + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static __thread int clone_ongoing; +static __thread int skip_segv; +static __thread jmp_buf segv_env; + +static void segv_handler(int sig, siginfo_t* info, void* ctx __unused) +{ + if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) { + exit(sig); + } + uintptr_t addr = (uintptr_t)info->si_addr; + const uintptr_t prog_start = 1 << 20; + const uintptr_t prog_end = 100 << 20; + int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0; + int valid = addr < prog_start || addr > prog_end; + if (sig == SIGBUS) + valid = 1; + if (skip && valid) { + _longjmp(segv_env, 1); + } + exit(sig); +} + +static void install_segv_handler(void) +{ + struct sigaction sa; + memset(&sa, 0, sizeof(sa)); + sa.sa_sigaction = segv_handler; + sa.sa_flags = SA_NODEFER | SA_SIGINFO; + sigaction(SIGSEGV, &sa, NULL); + sigaction(SIGBUS, &sa, NULL); +} + +#define NONFAILING(...) \ + ({ \ + int ok = 1; \ + __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ + if (_setjmp(segv_env) == 0) { \ + __VA_ARGS__; \ + } else \ + ok = 0; \ + __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ + ok; \ + }) + +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 thread_start(void* (*fn)(void*), void* arg) +{ + pthread_t th; + pthread_attr_t attr; + pthread_attr_init(&attr); + pthread_attr_setstacksize(&attr, 128 << 10); + int i = 0; + for (; i < 100; i++) { + if (pthread_create(&th, &attr, fn, arg) == 0) { + pthread_attr_destroy(&attr); + return; + } + if (errno == EAGAIN) { + usleep(50); + continue; + } + break; + } + exit(1); +} + +typedef struct { + pthread_mutex_t mu; + pthread_cond_t cv; + int state; +} event_t; + +static void event_init(event_t* ev) +{ + if (pthread_mutex_init(&ev->mu, 0)) + exit(1); + if (pthread_cond_init(&ev->cv, 0)) + exit(1); + ev->state = 0; +} + +static void event_reset(event_t* ev) +{ + ev->state = 0; +} + +static void event_set(event_t* ev) +{ + pthread_mutex_lock(&ev->mu); + if (ev->state) + exit(1); + ev->state = 1; + pthread_mutex_unlock(&ev->mu); + pthread_cond_broadcast(&ev->cv); +} + +static void event_wait(event_t* ev) +{ + pthread_mutex_lock(&ev->mu); + while (!ev->state) + pthread_cond_wait(&ev->cv, &ev->mu); + pthread_mutex_unlock(&ev->mu); +} + +static int event_isset(event_t* ev) +{ + pthread_mutex_lock(&ev->mu); + int res = ev->state; + pthread_mutex_unlock(&ev->mu); + return res; +} + +static int event_timedwait(event_t* ev, uint64_t timeout) +{ + uint64_t start = current_time_ms(); + uint64_t now = start; + pthread_mutex_lock(&ev->mu); + for (;;) { + if (ev->state) + break; + uint64_t remain = timeout - (now - start); + struct timespec ts; + ts.tv_sec = remain / 1000; + ts.tv_nsec = (remain % 1000) * 1000 * 1000; + pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); + now = current_time_ms(); + if (now - start > timeout) + break; + } + int res = ev->state; + pthread_mutex_unlock(&ev->mu); + return res; +} + +static void sandbox_common() +{ + struct rlimit rlim; + rlim.rlim_cur = rlim.rlim_max = 128 << 20; + setrlimit(RLIMIT_AS, &rlim); + rlim.rlim_cur = rlim.rlim_max = 8 << 20; + setrlimit(RLIMIT_MEMLOCK, &rlim); + rlim.rlim_cur = rlim.rlim_max = 1 << 20; + setrlimit(RLIMIT_FSIZE, &rlim); + rlim.rlim_cur = rlim.rlim_max = 1 << 20; + setrlimit(RLIMIT_STACK, &rlim); + rlim.rlim_cur = rlim.rlim_max = 0; + setrlimit(RLIMIT_CORE, &rlim); + rlim.rlim_cur = rlim.rlim_max = 256; + setrlimit(RLIMIT_NOFILE, &rlim); +} + +static void loop(); + +static int do_sandbox_none(void) +{ + sandbox_common(); + loop(); + return 0; +} + +struct thread_t { + int created, call; + event_t ready, done; +}; + +static struct thread_t threads[16]; +static void execute_call(int call); +static int running; + +static void* thr(void* arg) +{ + struct thread_t* th = (struct thread_t*)arg; + for (;;) { + event_wait(&th->ready); + event_reset(&th->ready); + execute_call(th->call); + __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); + event_set(&th->done); + } + return 0; +} + +static void execute_one(void) +{ + int i, call, thread; + for (call = 0; call < 5; call++) { + for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); + thread++) { + struct thread_t* th = &threads[thread]; + if (!th->created) { + th->created = 1; + event_init(&th->ready); + event_init(&th->done); + event_set(&th->done); + thread_start(thr, th); + } + if (!event_isset(&th->done)) + continue; + event_reset(&th->done); + th->call = call; + __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); + event_set(&th->ready); + event_timedwait(&th->done, 50); + break; + } + } + for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) + sleep_ms(1); +} + +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; + } + } +} + +void execute_call(int call) +{ + switch (call) { + case 0: + syscall(SYS_thr_new, 0ul, 0ul); + break; + case 1: + syscall(SYS_setloginclass, 0ul); + break; + case 2: + syscall(SYS_vfork); + break; + case 3: + NONFAILING(*(uint32_t*)0x20001880 = 4); + syscall(SYS_sysarch, 8ul, 0x20001880ul); + break; + case 4: + syscall(SYS_getsid, 0); + break; + } +} +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); + install_segv_handler(); + do_sandbox_none(); + return 0; +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 + +(cd /tmp; timeout 2m ./$prog) + +rm -rf /tmp/$prog /tmp/$prog.c /tmp/syzkaller.* +exit 0 diff --git a/tools/test/stress2/misc/syzkaller65.sh b/tools/test/stress2/misc/syzkaller65.sh new file mode 100755 index 000000000000..8806a55e2733 --- /dev/null +++ b/tools/test/stress2/misc/syzkaller65.sh @@ -0,0 +1,82 @@ +#!/bin/sh + +# panic: in_pcblookup_hash_locked: invalid local address +# cpuid = 11 +# time = 1678303805 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0657e466d0 +# vpanic() at vpanic+0x152/frame 0xfffffe0657e46720 +# panic() at panic+0x43/frame 0xfffffe0657e46780 +# in_pcblookup_hash_locked() at in_pcblookup_hash_locked+0x4e2/frame 0xfffffe0657e467f0 +# in_pcb_lport_dest() at in_pcb_lport_dest+0x28a/frame 0xfffffe0657e468a0 +# in_pcbconnect_setup() at in_pcbconnect_setup+0x31b/frame 0xfffffe0657e46940 +# udp_send() at udp_send+0x68b/frame 0xfffffe0657e46a50 +# udp6_send() at udp6_send+0x287/frame 0xfffffe0657e46c10 +# sosend_dgram() at sosend_dgram+0x327/frame 0xfffffe0657e46c70 +# sousrsend() at sousrsend+0x7e/frame 0xfffffe0657e46cd0 +# kern_sendit() at kern_sendit+0x1bc/frame 0xfffffe0657e46d60 +# sendit() at sendit+0xba/frame 0xfffffe0657e46db0 +# sys_sendto() at sys_sendto+0x4d/frame 0xfffffe0657e46e00 +# amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe0657e46f30 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0657e46f30 +# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x822a3a31a, rsp = 0x8208224d8, rbp = 0x820822500 --- +# KDB: enter: panic +# [ thread pid 47141 tid 357973 ] +# Stopped at kdb_enter+0x32: movq $0,0x12906d3(%rip) +# db> x/s version +# FreeBSD 14.0-CURRENT #0 main-n261389-109abf744bf76: Wed Mar 8 06:10:24 CET 2023 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/a +# db> + +[ `uname -p` != "amd64" ] && exit 0 +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c < +#include +#include +#include +#include +#include +#include +#include +#include +#include + +uint64_t r[1] = {0xffffffffffffffff}; + +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); + intptr_t res = 0; + res = syscall(SYS_socket, 0x1cul, 2ul, 0); + if (res != -1) + r[0] = res; + *(uint32_t*)0x200001c0 = 0; + syscall(SYS_setsockopt, r[0], 0x29, 0x1b, 0x200001c0ul, 4ul); + *(uint8_t*)0x20000000 = 0x1c; + *(uint8_t*)0x20000001 = 0x1c; + *(uint16_t*)0x20000002 = htobe16(0x4e22); + *(uint32_t*)0x20000004 = 0; + memset((void*)0x20000008, 0, 10); + memset((void*)0x20000012, 255, 2); + *(uint32_t*)0x20000014 = htobe32(0); + *(uint32_t*)0x20000018 = 0; + syscall(SYS_sendto, r[0], 0ul, 0ul, 0ul, 0x20000000ul, 0x1cul); + return 0; +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 + +(cd /tmp; timeout 2m ./$prog) + +rm -rf /tmp/$prog /tmp/$prog.c /tmp/syzkaller.* +exit 0