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Wed, 1 Jun 2022 08:04:09 GMT (envelope-from git) Date: Wed, 1 Jun 2022 08:04:09 GMT Message-Id: <202206010804.2518496t024146@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: e14e0a163225 - main - stress2: Added syzkaller reproducers List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@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: e14e0a163225e4363c08c3c954c84447f8a20c03 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1654070649; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=F2L2MnhjamHdETWNotdghVPPjHr4o62Cy8k2Snh+n+c=; b=kE+U6302iwBM17t0PpnGUkjU+WqhGNuDqNsChj1EsEE3ViOspG+aiLbm0ErMa3951DJMAU +UIuNpJJ0BSKElracC8NJDS8utPD368EM6ugy7o0RyAHXi3UyQRnc7e25jyMJ4cxUblQXC zR/8iHSWIZ6JKK4UPaOl6yvqY6cVLh7aKCO1gFR+kD/vbmIT/xDf1pYqB1/f/9/EIs8HMF dR/1huvPxrLTlxe32r2kSYgvgRYI3E3ZYuc7pc49jMy7FvZv52h8YEIdhuz3pk+/o4vY+1 h06b3hESIEZF+f9tyxxQm+fSmFdmqZOUIcl2IkYbwRZb2IxPNGixrAb+HcrCwg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1654070649; a=rsa-sha256; cv=none; b=ZsY+wLyTaDoq8NwNsB2HHUMuB5r3FUvF4pVcUqWER1OJejycQ8sgpLCgEykQq1rrzpxtgO CmEqjwdhuXQKYJxWTPxGBfhSjhsal8G/UYKIOASVQZxpfxQ3PR0QABIlZHBnaoc+Vy2UwH WGeNhynMJh8y9HFJVEznbo2y4hLZYYA3h/6BibMRXRlD6TKApMVSIDmiVZX8MGSYVzjr0e ic9i6vvF0XU9jnvrDpsdovrP1dwF8z9yTILJ/p6+M3+6yv0bJYvMbfTqqEePUo9PFnDjce A74r+YrfrGcZDlGn23I0cxebZ+1DdeNwYB+ul3CMBIt2nMpUVjtqium9dr9CEg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by pho: URL: https://cgit.FreeBSD.org/src/commit/?id=e14e0a163225e4363c08c3c954c84447f8a20c03 commit e14e0a163225e4363c08c3c954c84447f8a20c03 Author: Peter Holm AuthorDate: 2022-06-01 08:02:08 +0000 Commit: Peter Holm CommitDate: 2022-06-01 08:02:08 +0000 stress2: Added syzkaller reproducers --- tools/test/stress2/misc/syzkaller54.sh | 324 +++++++++++++++++++++++++++++++++ tools/test/stress2/misc/syzkaller55.sh | 197 ++++++++++++++++++++ tools/test/stress2/misc/syzkaller57.sh | 267 +++++++++++++++++++++++++++ 3 files changed, 788 insertions(+) diff --git a/tools/test/stress2/misc/syzkaller54.sh b/tools/test/stress2/misc/syzkaller54.sh new file mode 100755 index 000000000000..dc3ce0dc876c --- /dev/null +++ b/tools/test/stress2/misc/syzkaller54.sh @@ -0,0 +1,324 @@ +#!/bin/sh + +# panic: td 0xfffffe014f7193a0 is not suspended +# cpuid = 5 +# time = 1652003036 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe019a497c20 +# vpanic() at vpanic+0x17f/frame 0xfffffe019a497c70 +# panic() at panic+0x43/frame 0xfffffe019a497cd0 +# thread_single() at thread_single+0x766/frame 0xfffffe019a497d40 +# fork1() at fork1+0x1e1/frame 0xfffffe019a497da0 +# sys_rfork() at sys_rfork+0xa4/frame 0xfffffe019a497e00 +# amd64_syscall() at amd64_syscall+0x145/frame 0xfffffe019a497f30 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe019a497f30 +# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x82317b7da, rsp = 0x826544f48, rbp = 0x826544f70 --- +# KDB: enter: panic +# [ thread pid 17068 tid 104913 ] +# Stopped at kdb_enter+0x32: movq $0,0x12795f3(%rip) +# db> x/s version +# FreeBSD 14.0-CURRENT #0 main-n255381-cbbce42345c51: Sun May 8 09:55:50 CEST 2022 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO +# db> + +[ `uname -p` != "amd64" ] && exit 0 + +. ../default.cfg +cat > /tmp/syzkaller54.c < + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static unsigned long long procid; + +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; +} + +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 < 12; 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; + } + } +} + +uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, + 0xffffffffffffffff}; + +void execute_call(int call) +{ + intptr_t res = 0; + switch (call) { + case 0: + res = syscall(SYS_socket, 0x1cul, 1ul, 0x84); + if (res != -1) + r[0] = res; + break; + case 1: + syscall(SYS_connect, r[0], 0ul, 0ul); + break; + case 2: + res = syscall(SYS_socket, 0x1cul, 1ul, 0x84); + if (res != -1) + r[1] = res; + break; + case 3: + syscall(SYS_sendto, -1, 0ul, 0ul, 0ul, 0ul, 0ul); + break; + case 4: + syscall(SYS_dup2, r[1], -1); + break; + case 5: + res = syscall(SYS_dup2, -1, -1); + if (res != -1) + r[2] = res; + break; + case 6: + res = syscall(SYS_dup2, -1, r[2]); + if (res != -1) + r[3] = res; + break; + case 7: + syscall(SYS_sendmsg, r[3], 0ul, 0ul); + break; + case 8: + syscall(SYS_sendto, -1, 0ul, 0ul, 0ul, 0ul, 0ul); + break; + case 9: + memcpy((void*)0x20000100, "/dev/filemon\000", 13); + syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0ul, 0ul); + break; + case 10: + syscall(SYS_rfork, 0x5000ul); + break; + case 11: + *(uint32_t*)0x20000080 = 0x13; + *(uint32_t*)0x20000084 = 0; + *(uint32_t*)0x20000088 = 0; + *(uint32_t*)0x2000008c = 0; + *(uint32_t*)0x20000090 = -1; + memset((void*)0x20000094, 0, 60); + syscall(SYS_procctl, 0ul, 0, 6ul, 0x20000080ul); + break; + } +} +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); + for (procid = 0; procid < 4; procid++) { + if (fork() == 0) { + loop(); + } + } + sleep(1000000); + return 0; +} +EOF +mycc -o /tmp/syzkaller54 -Wall -Wextra -O0 /tmp/syzkaller54.c -l pthread || + exit 1 + +start=`date +%s` +while [ $((`date +%s` - start)) -lt 120 ]; do + (cd /tmp; timeout 3m ./syzkaller54) +done + +rm -rf /tmp/syzkaller54 /tmp/syzkaller54.c /tmp/syzkaller54.core \ + /tmp/syzkaller.?????? +exit 0 diff --git a/tools/test/stress2/misc/syzkaller55.sh b/tools/test/stress2/misc/syzkaller55.sh new file mode 100755 index 000000000000..9914587926cf --- /dev/null +++ b/tools/test/stress2/misc/syzkaller55.sh @@ -0,0 +1,197 @@ +#!/bin/sh + +# panic: Counter goes negative +# cpuid = 8 +# time = 1653397881 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe014386fa40 +# vpanic() at vpanic+0x17f/frame 0xfffffe014386fa90 +# panic() at panic+0x43/frame 0xfffffe014386faf0 +# sctp_sorecvmsg() at sctp_sorecvmsg+0xf8e/frame 0xfffffe014386fc10 +# sctp_soreceive() at sctp_soreceive+0x196/frame 0xfffffe014386fe00 +# soreceive() at soreceive+0x4b/frame 0xfffffe014386fe20 +# soaio_process_sb() at soaio_process_sb+0x581/frame 0xfffffe014386feb0 +# soaio_kproc_loop() at soaio_kproc_loop+0xa9/frame 0xfffffe014386fef0 +# fork_exit() at fork_exit+0x80/frame 0xfffffe014386ff30 +# fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe014386ff30 +# --- trap 0xc, rip = 0x8220e08da, rsp = 0x820a211b8, rbp = 0x820a211e0 --- +# KDB: enter: panic +# [ thread pid 78762 tid 931834 ] +# Stopped at kdb_enter+0x32: movq $0,0x1278fc3(%rip) +# db> x/s version +# FreeBSD 14.0-CURRENT #0 reap-n255780-cbbb27164fa: Tue May 24 13:42:53 CEST 2022 +# pho@mercat1.netperf.freebsd.org:/var/tmp/deviant3/sys/amd64/compile/PHO +# db> + +[ `uname -p` != "amd64" ] && exit 0 + +. ../default.cfg +cat > /tmp/syzkaller55.c < + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static unsigned long long procid; + +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[3] = {0xffffffffffffffff, 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*)0x20000000 = 0x1c; + *(uint8_t*)0x20000001 = 0x1c; + *(uint16_t*)0x20000002 = htobe16(0x4e23 + procid * 4); + *(uint32_t*)0x20000004 = 0; + memset((void*)0x20000008, 0, 16); + *(uint32_t*)0x20000018 = 0; + syscall(SYS_bind, r[0], 0x20000000ul, 0x1cul); + *(uint8_t*)0x20000080 = 0x1c; + *(uint8_t*)0x20000081 = 0x1c; + *(uint16_t*)0x20000082 = htobe16(0x4e23 + procid * 4); + *(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*)0x20000400 = r[0]; + *(uint64_t*)0x20000408 = 0; + *(uint64_t*)0x20000410 = 0x20000040; + memset((void*)0x20000040, 27, 1); + *(uint64_t*)0x20000418 = 1; + *(uint32_t*)0x20000420 = 0; + *(uint32_t*)0x20000424 = 0; + *(uint64_t*)0x20000428 = 0; + *(uint32_t*)0x20000430 = 0; + *(uint32_t*)0x20000434 = 0; + *(uint64_t*)0x20000438 = 0; + *(uint64_t*)0x20000440 = 0; + *(uint64_t*)0x20000448 = 0; + *(uint32_t*)0x20000450 = 0; + *(uint32_t*)0x20000454 = 0; + *(uint32_t*)0x20000458 = 0; + *(uint64_t*)0x20000460 = 0; + *(uint64_t*)0x20000468 = 0; + *(uint64_t*)0x20000470 = 0; + *(uint64_t*)0x20000478 = 0; + *(uint64_t*)0x20000480 = 0; + *(uint64_t*)0x20000488 = 0; + *(uint64_t*)0x20000490 = 0; + *(uint64_t*)0x20000498 = 0; + syscall(SYS_aio_read, 0x20000400ul); + memset((void*)0x200000c0, 89, 1); + syscall(SYS_sendto, r[0], 0x200000c0ul, 1ul, 0ul, 0ul, 0ul); + syscall(SYS_shutdown, r[0], 0ul); + res = syscall(SYS_socket, 0x1cul, 5ul, 0x84); + if (res != -1) + r[1] = res; + *(uint64_t*)0x200003c0 = 0; + *(uint32_t*)0x200003c8 = 0; + *(uint64_t*)0x200003d0 = 0x20000300; + *(uint64_t*)0x20000300 = 0x20000200; + memset((void*)0x20000200, 30, 1); + *(uint64_t*)0x20000308 = 1; + *(uint32_t*)0x200003d8 = 1; + *(uint64_t*)0x200003e0 = 0; + *(uint32_t*)0x200003e8 = 0; + *(uint32_t*)0x200003ec = 0; + syscall(SYS_sendmsg, r[0], 0x200003c0ul, 0ul); + res = syscall(SYS_dup2, r[0], r[1]); + if (res != -1) + r[2] = res; + *(uint32_t*)0x20000140 = 0; + memcpy((void*)0x20000144, "\x0a\x00\x01\x00\x01", 5); + syscall(SYS_setsockopt, r[2], 0x84, 0x901, 0x20000140ul, 0xaul); +} +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); + for (procid = 0; procid < 4; procid++) { + if (fork() == 0) { + loop(); + } + } + sleep(1000000); + return 0; +} +EOF +mycc -o /tmp/syzkaller55 -Wall -Wextra -O0 /tmp/syzkaller55.c || exit 1 + +kldstat | grep -q sctp || kldload sctp.ko +start=`date +%s` +while [ $((`date +%s` - start)) -lt 120 ]; do + (cd /tmp; timeout 3m ./syzkaller55) +done + +rm -rf /tmp/syzkaller55 /tmp/syzkaller55.c /tmp/syzkaller55.core \ + /tmp/syzkaller.?????? +exit 0 diff --git a/tools/test/stress2/misc/syzkaller57.sh b/tools/test/stress2/misc/syzkaller57.sh new file mode 100755 index 000000000000..a90213744418 --- /dev/null +++ b/tools/test/stress2/misc/syzkaller57.sh @@ -0,0 +1,267 @@ +#!/bin/sh + +# panic: sbflush_internal: ccc 0 mb 0 mbcnt 256 +# cpuid = 6 +# time = 1653879149 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0694766c00 +# vpanic() at vpanic+0x17f/frame 0xfffffe0694766c50 +# panic() at panic+0x43/frame 0xfffffe0694766cb0 +# sbrelease_internal() at sbrelease_internal+0xb9/frame 0xfffffe0694766cd0 +# solisten_proto() at solisten_proto+0xb5/frame 0xfffffe0694766d30 +# sctp_listen() at sctp_listen+0x2f7/frame 0xfffffe0694766da0 +# solisten() at solisten+0x42/frame 0xfffffe0694766dc0 +# kern_listen() at kern_listen+0x7d/frame 0xfffffe0694766e00 +# amd64_syscall() at amd64_syscall+0x145/frame 0xfffffe0694766f30 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0694766f30 +# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x82222e7da, rsp = 0x820d68d88, rbp = 0x820d68f00 --- +# KDB: enter: panic +# [ thread pid 12921 tid 741095 ] +# Stopped at kdb_enter+0x32: movq $0,0x1277ff3(%rip) +# db> x/s version +# FreeBSD 14.0-CURRENT #0 main-n255847-d46174cd8838b: Sat May 28 20:56:08 CEST 2022 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO +# db> + +[ `uname -p` != "amd64" ] && exit 0 + +. ../default.cfg +cat > /tmp/syzkaller57.c < + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static __thread int skip_segv; +static __thread jmp_buf segv_env; + +static void segv_handler(int sig, siginfo_t* info, void* ctx __unused) +{ + 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 use_temporary_dir(void) +{ + char tmpdir_template[] = "./syzkaller.XXXXXX"; + char* tmpdir = mkdtemp(tmpdir_template); + if (!tmpdir) + exit(1); + if (chmod(tmpdir, 0777)) + exit(1); + if (chdir(tmpdir)) + exit(1); +} + +static void __attribute__((noinline)) remove_dir(const char* dir) +{ + DIR* dp = opendir(dir); + if (dp == NULL) { + if (errno == EACCES) { + if (rmdir(dir)) + exit(1); + return; + } + exit(1); + } + struct dirent* ep = 0; + while ((ep = readdir(dp))) { + if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) + continue; + char filename[FILENAME_MAX]; + snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); + struct stat st; + if (lstat(filename, &st)) + exit(1); + if (S_ISDIR(st.st_mode)) { + remove_dir(filename); + continue; + } + if (unlink(filename)) + exit(1); + } + closedir(dp); + if (rmdir(dir)) + exit(1); +} + +static void execute_one(void); + +#define WAIT_FLAGS 0 + +static void loop(void) +{ + int iter = 0; + for (;; iter++) { + char cwdbuf[32]; + sprintf(cwdbuf, "./%d", iter); + if (mkdir(cwdbuf, 0777)) + exit(1); + int pid = fork(); + if (pid < 0) + exit(1); + if (pid == 0) { + if (chdir(cwdbuf)) + exit(1); + 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; + } + remove_dir(cwdbuf); + } +} + +uint64_t r[1] = {0xffffffffffffffff}; + +void execute_one(void) +{ + intptr_t res = 0; + res = syscall(SYS_socket, 0x1cul, 1ul, 0x84); + if (res != -1) + r[0] = res; + NONFAILING(*(uint8_t*)0x20000000 = 0x1c); + NONFAILING(*(uint8_t*)0x20000001 = 0x1c); + NONFAILING(*(uint16_t*)0x20000002 = htobe16(0x4e22)); + NONFAILING(*(uint32_t*)0x20000004 = 0x20); + NONFAILING(memset((void*)0x20000008, 0, 16)); + NONFAILING(*(uint32_t*)0x20000018 = 0x20); + syscall(SYS_bind, r[0], 0x20000000ul, 0x1cul); + NONFAILING(*(uint8_t*)0x20000180 = 0x1c); + NONFAILING(*(uint8_t*)0x20000181 = 0x1c); + NONFAILING(*(uint16_t*)0x20000182 = htobe16(0x4e22)); + NONFAILING(*(uint32_t*)0x20000184 = 4); + NONFAILING(*(uint64_t*)0x20000188 = htobe64(0)); + NONFAILING(*(uint64_t*)0x20000190 = htobe64(1)); + NONFAILING(*(uint32_t*)0x20000198 = 4); + syscall(SYS_connect, r[0], 0x20000180ul, 0x1cul); + NONFAILING(memcpy( + (void*)0x20000480, + "\xa3\x1b\xe1\x78\x8e\x58\x9b\x38\x59\xf3\xbb\xdd\x7e\xf7\x51\x23\x97\x31" + "\xb2\x90\x4a\xd0\x4e\xb7\xdc\x37\xc6\x95\xf6\x05\x5c\xa8\x36\x54\x7e\x7b" + "\x6c\xc3\x7d\xae\x2a\xe4\x77\x08\x94\x67\x3c\x89\x65\x93\x24\x1c\x56\x3e" + "\x08\x69\x05\x35\xeb\x3b\x7f\x19\x7d\xda\x44\x54\xb4\x42\x4f\x34\xc8\x81" + "\x69\x4e\xac\xef\xa6\xd4\xb1\x61\x9d\xf1\x0b\x97\x7c\xd9\x82\x16\xc9\x7b" + "\x2e\xb3\x9f\x02\xde\x0f\xae\xe7\x0b\xec\xa3\x66\x3c\x2e\x6c\xd1\xca\x02" + "\xae\x0f\xd5\x65\xb9\x7c\x5c\xa0\xea\xfc\xa4\xc9\x13\x73\x14\x16\xba\xcc" + "\xae\x89\xe2\x68\x77\xfc\x2a\x8c\xa3\xee\xa8\x45\xf7\xc2\xcb\x48\x93\xe5" + "\x83\x52\x45\x26\xe3\xeb\x73\xa2\xe4\xf1\x11\xcf\x40\x5f\xef\x99\xc2\xa1" + "\xeb\x2c\x96\x70\x56\x88\xc8\xc7\x6b\xa1\x66\xd2\x23\x20\x07\x62\x69\xd2" + "\x1c\x52\xbb\x5e\x86\x43\x7d\x6c\x65\x44\x42\xf6\xd8\x45\xe2\xff\x77\xf9" + "\x24\xf0\x1d\x29\xf6\xd3\x74\x83\x25\x40\x56\x50\x17\x7f\xc3\x60\xd7\xed" + "\xb1\xfb\x7a\x74\x38\x2b\x47\x34\x93\x9c\xee\xc9\xb0\xbf\x7d\xc4\x19\xe2" + "\x77\x49\xbc\x71\x9c\x30\x8b\x57\x0f\x13\x4d\x93\x9d\x53\xa8\x03\xc1\x3b" + "\x5d\xc3\xbc\x20\xc4\x9e\xc1\x62\x69\xca\x92\x0f\x04\xa1\x0b\xea\xe7\x61" + "\x79\x99\x5a\x53\x1a\x27\x40\xf0\x0b\xc5\xe8\xb5\xf0\xd8\x1c\xd2\xca\x99" + "\x16\x70\xa8\xc5\xac\x0a\x6b\x99\x31\x0c\x90\xe2\xa5\xe0\xe3\x7c\x99\x3c" + "\xbd\xeb\x42\xcf\x74\xe0\xa8\xea\x4e\x64\xd8\x30\x46\x6d\x6e\x83\x7f\x21" + "\x00\x5c\xcf\x79\xfe\x19\xdd\xd5\xaf\x69\x9e\x1b\x67\xd5\x3f\x18\x4d\xe5" + "\x2a\xec\x02\x12\x92", + 347)); + syscall(SYS_sendto, r[0], 0x20000480ul, 0x15bul, 0x20108ul, 0ul, 0ul); + syscall(SYS_listen, r[0], 0x1f); +} +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); + install_segv_handler(); + use_temporary_dir(); + loop(); + return 0; +} +EOF +mycc -o /tmp/syzkaller57 -Wall -Wextra -O0 /tmp/syzkaller57.c || exit 1 + +kldstat | grep -q sctp || { kldload sctp.ko && loaded=1; } +for i in `jot 3`; do + (cd /tmp; timeout 3m ./syzkaller57) & +done +wait + +rm -rf /tmp/syzkaller57 /tmp/syzkaller57.c /tmp/syzkaller57.core \ + /tmp/syzkaller.?????? +[ $loaded ] && kldunload sctp.ko +exit 0