Date: Mon, 12 May 2025 10:07:20 GMT From: Peter Holm <pho@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: abe84e611076 - main - stress2: Added syzkaller reproducers Message-ID: <202505121007.54CA7Kkg073295@gitrepo.freebsd.org>
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The branch main has been updated by pho: URL: https://cgit.FreeBSD.org/src/commit/?id=abe84e61107639cdb5b7854ff74f9a5a91984e3d commit abe84e61107639cdb5b7854ff74f9a5a91984e3d Author: Peter Holm <pho@FreeBSD.org> AuthorDate: 2025-05-12 10:06:37 +0000 Commit: Peter Holm <pho@FreeBSD.org> CommitDate: 2025-05-12 10:06:37 +0000 stress2: Added syzkaller reproducers --- tools/test/stress2/misc/syzkaller76.sh | 235 ++++++++++++++++++++++++++ tools/test/stress2/misc/syzkaller77.sh | 290 +++++++++++++++++++++++++++++++++ tools/test/stress2/misc/syzkaller78.sh | 282 ++++++++++++++++++++++++++++++++ tools/test/stress2/misc/syzkaller79.sh | 82 ++++++++++ 4 files changed, 889 insertions(+) diff --git a/tools/test/stress2/misc/syzkaller76.sh b/tools/test/stress2/misc/syzkaller76.sh new file mode 100755 index 000000000000..67a566cbfa00 --- /dev/null +++ b/tools/test/stress2/misc/syzkaller76.sh @@ -0,0 +1,235 @@ +#!/bin/sh + +# panic: aio_process_rw: opcode 70 +# cpuid = 7 +# time = 1746175480 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe010844ccb0 +# vpanic() at vpanic+0x136/frame 0xfffffe010844cde0 +# panic() at panic+0x43/frame 0xfffffe010844ce40 +# aio_process_rw() at aio_process_rw+0x28e/frame 0xfffffe010844cea0 +# aio_daemon() at aio_daemon+0x286/frame 0xfffffe010844cef0 +# fork_exit() at fork_exit+0x82/frame 0xfffffe010844cf30 +# fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe010844cf30 +# --- trap 0xc, rip = 0x2020f02a472a, rsp = 0x2020ec9bb8d8, rbp = 0x2020ec9bb9d0 --- +# KDB: enter: panic +# [ thread pid 71553 tid 100216 ] +# Stopped at kdb_enter+0x33: movq $0,0x122f9c2(%rip) +# db> x/s version +# version: FreeBSD 15.0-CURRENT #0 main-n276945-2735c20d114f-dirty: Fri May 2 07:17:00 CEST 2025 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO +# db> + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg +set -u +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c <<EOF +// https://syzkaller.appspot.com/bug?id=0549d8c089382a2593078734cc8166a0fc9049f1 +// autogenerated by syzkaller (https://github.com/google/syzkaller) +// syzbot+b6e15476c91852bb2264@syzkaller.appspotmail.com + +#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, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, + /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, + /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, + /*fd=*/(intptr_t)-1, /*offset=*/0ul); + const char* reason; + (void)reason; + intptr_t res = 0; + if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { + } + res = syscall(SYS_freebsd10_pipe, /*pipefd=*/0x2000000005c0ul); + if (res != -1) + r[0] = *(uint32_t*)0x2000000005c4; + syscall(SYS_close, /*fd=*/r[0]); + memcpy((void*)0x200000000080, ".\000", 2); + syscall(SYS_open, /*file=*/0x200000000080ul, /*flags=*/0ul, /*mode=*/0ul); + *(uint32_t*)0x200000000080 = 0; + *(uint32_t*)0x200000000084 = 0; + *(uint32_t*)0x200000000088 = 4; + *(uint64_t*)0x200000000090 = 0; + *(uint64_t*)0x200000000098 = 0; + *(uint32_t*)0x2000000000a0 = 0; + *(uint32_t*)0x2000000000a4 = 8; + *(uint64_t*)0x2000000000a8 = 0x7fffffffffffffff; + *(uint32_t*)0x2000000000b0 = 0; + *(uint32_t*)0x2000000000b4 = 0x100; + *(uint64_t*)0x2000000000b8 = 0; + *(uint32_t*)0x2000000000c0 = 0; + *(uint32_t*)0x2000000000c4 = 0; + *(uint32_t*)0x2000000000c8 = 0; + *(uint32_t*)0x2000000000cc = 3; + *(uint32_t*)0x2000000000d0 = 0; + *(uint32_t*)0x2000000000d4 = 0; + *(uint32_t*)0x2000000000d8 = 0x400008; + *(uint32_t*)0x2000000000dc = 0x8e; + *(uint32_t*)0x2000000000e0 = 0xfffffffd; + *(uint32_t*)0x2000000000e4 = 0xf; + *(uint32_t*)0x2000000000e8 = 0xfffffffc; + *(uint32_t*)0x2000000000ec = 0; + *(uint32_t*)0x2000000000f0 = 0; + *(uint32_t*)0x2000000000f4 = 0; + *(uint32_t*)0x2000000000f8 = 0xff; + *(uint32_t*)0x2000000000fc = 0; + *(uint32_t*)0x200000000100 = 0; + *(uint32_t*)0x200000000104 = 2; + *(uint32_t*)0x200000000108 = 0; + *(uint32_t*)0x20000000010c = 2; + *(uint32_t*)0x200000000110 = 2; + *(uint32_t*)0x200000000114 = 0x5bee; + *(uint32_t*)0x200000000118 = 0; + *(uint32_t*)0x20000000011c = 0xc; + *(uint32_t*)0x200000000120 = 3; + *(uint32_t*)0x200000000124 = 2; + *(uint32_t*)0x200000000128 = 0; + *(uint32_t*)0x20000000012c = 0x10000000; + *(uint32_t*)0x200000000130 = 0; + *(uint32_t*)0x200000000134 = 1; + *(uint32_t*)0x200000000138 = 0; + *(uint32_t*)0x20000000013c = 0x83; + *(uint32_t*)0x200000000140 = 0; + *(uint32_t*)0x200000000144 = 0; + *(uint32_t*)0x200000000148 = 0; + *(uint32_t*)0x20000000014c = 0; + *(uint32_t*)0x200000000150 = 0; + *(uint32_t*)0x200000000154 = 0xfff; + *(uint32_t*)0x200000000158 = 1; + *(uint32_t*)0x20000000015c = 0x4c; + *(uint32_t*)0x200000000160 = 0x1fffffc; + *(uint32_t*)0x200000000164 = 4; + *(uint32_t*)0x200000000168 = 0x40000001; + *(uint32_t*)0x20000000016c = 0; + *(uint32_t*)0x200000000170 = 8; + *(uint32_t*)0x200000000174 = 0; + *(uint32_t*)0x200000000178 = 0; + *(uint32_t*)0x20000000017c = 0x100001; + *(uint32_t*)0x200000000180 = 0; + *(uint32_t*)0x200000000184 = 0x1ff; + *(uint32_t*)0x200000000188 = 0xe; + *(uint32_t*)0x20000000018c = 8; + *(uint32_t*)0x200000000190 = 0; + *(uint32_t*)0x200000000194 = 0; + *(uint32_t*)0x200000000198 = 0; + *(uint32_t*)0x20000000019c = 0xc; + *(uint32_t*)0x2000000001a0 = 9; + *(uint32_t*)0x2000000001a4 = 2; + *(uint32_t*)0x2000000001a8 = 0x10000002; + *(uint32_t*)0x2000000001ac = 0x100000; + *(uint32_t*)0x2000000001b0 = 0x46; + *(uint32_t*)0x2000000001b4 = 6; + *(uint32_t*)0x2000000001b8 = 0x3ff; + *(uint32_t*)0x2000000001bc = 2; + *(uint32_t*)0x2000000001c0 = 0; + *(uint32_t*)0x2000000001c4 = 0xfffffffa; + *(uint32_t*)0x2000000001c8 = 0x200; + *(uint32_t*)0x2000000001cc = 0; + *(uint32_t*)0x2000000001d0 = 1; + *(uint32_t*)0x2000000001d4 = 3; + *(uint32_t*)0x2000000001d8 = 0; + *(uint32_t*)0x2000000001dc = 0x100; + *(uint32_t*)0x2000000001e0 = 0; + *(uint32_t*)0x2000000001e4 = 8; + *(uint32_t*)0x2000000001e8 = 0x108c6b2; + *(uint32_t*)0x2000000001ec = 0xfffffffa; + *(uint32_t*)0x2000000001f0 = 0; + *(uint32_t*)0x2000000001f4 = 5; + *(uint32_t*)0x2000000001f8 = 0; + *(uint32_t*)0x2000000001fc = 0; + *(uint32_t*)0x200000000200 = 0; + *(uint32_t*)0x200000000204 = 0; + *(uint32_t*)0x200000000208 = 0; + *(uint32_t*)0x20000000020c = 0x80; + *(uint32_t*)0x200000000210 = 0; + *(uint32_t*)0x200000000214 = 1; + *(uint32_t*)0x200000000218 = 0; + *(uint32_t*)0x20000000021c = 6; + *(uint32_t*)0x200000000220 = 0; + *(uint32_t*)0x200000000224 = 0; + *(uint32_t*)0x200000000228 = 0; + *(uint32_t*)0x20000000022c = 6; + *(uint32_t*)0x200000000230 = 0; + *(uint32_t*)0x200000000234 = 0; + *(uint32_t*)0x200000000238 = 0; + *(uint32_t*)0x20000000023c = 0xa9f; + syscall(SYS_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0xc1c06d02ul, + /*arg=*/0x200000000080ul); + *(uint32_t*)0x200000000580 = -1; + *(uint64_t*)0x200000000588 = 0; + *(uint64_t*)0x200000000590 = 0x200000000180; + *(uint64_t*)0x200000000598 = 0; + *(uint32_t*)0x2000000005a0 = 0xfffff000; + *(uint32_t*)0x2000000005a4 = 3; + *(uint64_t*)0x2000000005a8 = 0; + *(uint32_t*)0x2000000005b0 = 0; + *(uint32_t*)0x2000000005b4 = 0; + *(uint64_t*)0x2000000005b8 = 0; + *(uint64_t*)0x2000000005c0 = 0; + *(uint64_t*)0x2000000005c8 = 0; + *(uint32_t*)0x2000000005d0 = 0; + *(uint32_t*)0x2000000005d4 = 0; + *(uint64_t*)0x2000000005d8 = 0; + *(uint16_t*)0x2000000005e0 = 0x4043; + *(uint32_t*)0x200000000620 = -1; + *(uint64_t*)0x200000000628 = 0; + *(uint64_t*)0x200000000630 = 0; + *(uint64_t*)0x200000000638 = 0; + *(uint32_t*)0x200000000640 = 0x10; + *(uint32_t*)0x200000000644 = 0; + *(uint64_t*)0x200000000648 = 0; + *(uint32_t*)0x200000000650 = 0; + *(uint32_t*)0x200000000654 = 0; + *(uint64_t*)0x200000000658 = 8; + *(uint64_t*)0x200000000660 = 0x3ff; + *(uint64_t*)0x200000000668 = 0; + *(uint32_t*)0x200000000670 = 1; + *(uint32_t*)0x200000000674 = 0; + *(uint32_t*)0x200000000678 = 3; + *(uint16_t*)0x200000000680 = 0; + *(uint32_t*)0x2000000006c0 = -1; + *(uint64_t*)0x2000000006c8 = 0; + *(uint64_t*)0x2000000006d0 = 0; + *(uint64_t*)0x2000000006d8 = 0; + *(uint32_t*)0x2000000006e0 = 0; + *(uint32_t*)0x2000000006e4 = 0; + *(uint64_t*)0x2000000006e8 = 2; + *(uint32_t*)0x2000000006f0 = 0; + *(uint32_t*)0x2000000006f4 = 0; + *(uint64_t*)0x2000000006f8 = 0x101; + *(uint64_t*)0x200000000700 = 0xb3; + *(uint64_t*)0x200000000708 = 0; + *(uint32_t*)0x200000000710 = 0; + *(uint32_t*)0x200000000714 = 0xa; + *(uint64_t*)0x200000000718 = 3; + *(uint32_t*)0x200000000720 = 0; + syscall(SYS_lio_listio, /*mode=*/0ul, /*list=*/0x200000000580ul, /*nent=*/3ul, + /*sig=*/0ul); + return 0; +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 +work=/tmp/$prog.dir +rm -rf $work +mkdir $work +cd /tmp/$prog.dir +timeout 3m /tmp/$prog > /dev/null 2>&1 + +rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core /tmp/$prog.?????? $work +exit 0 diff --git a/tools/test/stress2/misc/syzkaller77.sh b/tools/test/stress2/misc/syzkaller77.sh new file mode 100755 index 000000000000..c77a3fd2dd22 --- /dev/null +++ b/tools/test/stress2/misc/syzkaller77.sh @@ -0,0 +1,290 @@ +#!/bin/sh + +# panic: sofree:1883 curvnet is NULL, so=0xfffff8017ca59000 +# cpuid = 8 +# time = 1746559098 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0182b5c8d0 +# vpanic() at vpanic+0x136/frame 0xfffffe0182b5ca00 +# panic() at panic+0x43/frame 0xfffffe0182b5ca60 +# sorele_locked() at sorele_locked+0x25f/frame 0xfffffe0182b5ca90 +# uipc_sendfile_wait() at uipc_sendfile_wait+0x1df/frame 0xfffffe0182b5caf0 +# vn_sendfile() at vn_sendfile+0x59b/frame 0xfffffe0182b5cd70 +# sendfile() at sendfile+0x129/frame 0xfffffe0182b5ce00 +# amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe0182b5cf30 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0182b5cf30 +# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x8223fb72a, rsp = 0x824baaf58, rbp = 0x824baaf90 --- +# KDB: enter: panic +# [ thread pid 6382 tid 103296 ] +# Stopped at kdb_enter+0x33: movq $0,0x122f202(%rip) +# db> x/s version +# version: FreeBSD 15.0-CURRENT #0 main-n277057-794e792121ba-dirty: Tue May 6 18:34:20 CEST 2025 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO +# db> + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg +set -u +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c <<EOF +// https://syzkaller.appspot.com/bug?id=f04b36c4f2b84533225a1bd695a0aed2efa559e5 +// autogenerated by syzkaller (https://github.com/google/syzkaller) +// syzbot+7b0b20cf2c672c181d98@syzkaller.appspotmail.com + +#define _GNU_SOURCE + +#include <errno.h> +#include <pthread.h> +#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 <time.h> +#include <unistd.h> + +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 loop(void) +{ + if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { + } + int i, call, thread; + for (call = 0; call < 8; 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); +} + +uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, + 0xffffffffffffffff, 0xffffffffffffffff}; + +void execute_call(int call) +{ + intptr_t res = 0; + switch (call) { + case 0: + memcpy((void*)0x200000000480, "./file0\000", 8); + res = syscall( + SYS_open, /*file=*/0x200000000480ul, + /*flags=O_NONBLOCK|O_CREAT|O_RDWR|0x80000000000000*/ 0x80000000000206ul, + /*mode=*/0ul); + if (res != -1) + r[0] = res; + break; + case 1: + syscall(SYS_ftruncate, /*fd=*/r[0], /*len=*/0x3862ul); + break; + case 2: + res = syscall(SYS_socket, /*domain=*/2ul, /*type=*/2ul, /*proto=*/0x88); + if (res != -1) + r[1] = res; + break; + case 3: + res = syscall(SYS_socketpair, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, + /*proto=*/0, /*fds=*/0x200000000180ul); + if (res != -1) { + r[2] = *(uint32_t*)0x200000000180; + r[3] = *(uint32_t*)0x200000000184; + } + break; + case 4: + syscall(SYS_dup2, /*oldfd=*/r[2], /*newfd=*/r[1]); + break; + case 5: + memcpy((void*)0x200000000140, "./file0\000", 8); + res = syscall(SYS_open, /*file=*/0x200000000140ul, /*flags=*/0ul, + /*mode=*/0ul); + if (res != -1) + r[4] = res; + break; + case 6: + syscall(SYS_sendfile, /*fd=*/r[4], /*s=*/r[1], /*offset=*/0ul, + /*nbytes=*/0ul, /*hdtr=*/0ul, /*sbytes=*/0ul, + /*flags=SF_SYNC|SF_NOCACHE*/ 0x14ul); + break; + case 7: + syscall(SYS_dup2, /*oldfd=*/r[4], /*newfd=*/r[3]); + break; + } +} +int main(void) +{ + syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, + /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, + /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, + /*fd=*/(intptr_t)-1, /*offset=*/0ul); + const char* reason; + (void)reason; + loop(); + return 0; +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 + +(cd ../testcases/swap; ./swap -t 3m -i 30 -l 100 > /dev/null 2>&1) & +sleep 5 + +work=/tmp/$prog.dir +rm -rf $work +mkdir $work +cd /tmp/$prog.dir +for i in `jot 30`; do + ( + mkdir d$i + cd d$i + timeout 3m /tmp/$prog > /dev/null 2>&1 & + ) +done +while pgrep -q $prog; do sleep 2; done +while pkill swap; do :; done +wait + +rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core /tmp/$prog.?????? $work +exit 0 diff --git a/tools/test/stress2/misc/syzkaller78.sh b/tools/test/stress2/misc/syzkaller78.sh new file mode 100755 index 000000000000..1858129d4c81 --- /dev/null +++ b/tools/test/stress2/misc/syzkaller78.sh @@ -0,0 +1,282 @@ +#!/bin/sh + +# Fatal trap 12: page fault while in kernel mode +# cpuid = 10; apic id = 07 +# fault virtual address = 0x0 +# fault code = supervisor read data, page not present +# instruction pointer = 0x20:0xffffffff80c3c276 +# stack pointer = 0x28:0xfffffe017273eb00 +# frame pointer = 0x28:0xfffffe017273eb30 +# code segment = base 0x0, limit 0xfffff, type 0x1b +# = DPL 0, pres 1, long 1, def32 0, gran 1 +# processor eflags = interrupt enabled, resume, IOPL = 0 +# current process = 43905 (syzkaller78) +# rdi: fffff8005b5d55e0 rsi: 0000000000000008 rdx: ffffffff81249e88 +# rcx: fffff8001b9aed00 r8: 0000000000000000 r9: fffff80003396000 +# rax: 0000000000000000 rbx: fffff8005b5d5400 rbp: fffffe017273eb30 +# r10: 0000000000000000 r11: fffff804d84e9c60 r12: fffff8005b5d55f8 +# r13: 0000000000000000 r14: fffff80497171700 r15: fffff8005b5d55c0 +# trap number = 12 +# panic: page fault +# cpuid = 7 +# time = 1746555157 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe017273e830 +# vpanic() at vpanic+0x136/frame 0xfffffe017273e960 +# panic() at panic+0x43/frame 0xfffffe017273e9c0 +# trap_pfault() at trap_pfault+0x48d/frame 0xfffffe017273ea30 +# calltrap() at calltrap+0x8/frame 0xfffffe017273ea30 +# --- trap 0xc, rip = 0xffffffff80c3c276, rsp = 0xfffffe017273eb00, rbp = 0xfffffe017273eb30 --- +# unp_dispose() at unp_dispose+0x3b6/frame 0xfffffe017273eb30 +# uipc_detach() at uipc_detach+0x35/frame 0xfffffe017273eb80 +# sorele_locked() at sorele_locked+0x107/frame 0xfffffe017273ebb0 +# soclose() at soclose+0x17d/frame 0xfffffe017273ec10 +# _fdrop() at _fdrop+0x1b/frame 0xfffffe017273ec30 +# closef() at closef+0x1e3/frame 0xfffffe017273ecc0 +# fdescfree() at fdescfree+0x41e/frame 0xfffffe017273ed80 +# exit1() at exit1+0x4a4/frame 0xfffffe017273edf0 +# sys_exit() at sys_exit+0xd/frameamd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe017273ef30 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe017273ef30 +# --- syscall (1, FreeBSD ELF64, exit), rip = 0x823ab472a, rsp = 0x8208e3ea8, rbp = 0x8208e3ec0 --- +# KDB: enter: panic +# [ thread pid 43905 tid 103344 ] +# Stopped at kdb_enter+0x33: movq $0,0x122f202(%rip) +# db> + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg +set -u +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c <<EOF +// https://syzkaller.appspot.com/bug?id=46eb92ee6e2f6acbd4250d0f2065b1f93296bd82 +// autogenerated by syzkaller (https://github.com/google/syzkaller) +// syzbot+0e99ffc200638909ca1c@syzkaller.appspotmail.com + +#define _GNU_SOURCE + +#include <sys/types.h> + +#include <dirent.h> +#include <errno.h> +#include <pwd.h> +#include <signal.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/stat.h> +#include <sys/syscall.h> +#include <sys/wait.h> +#include <time.h> +#include <unistd.h> + +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 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 reset_flags(const char* filename) +{ + struct stat st; + if (lstat(filename, &st)) + exit(1); + st.st_flags &= ~(SF_NOUNLINK | UF_NOUNLINK | SF_IMMUTABLE | UF_IMMUTABLE | + SF_APPEND | UF_APPEND); + if (lchflags(filename, st.st_flags)) + 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)) { + if (errno == EPERM) { + reset_flags(filename); + reset_flags(dir); + if (unlink(filename) == 0) + continue; + } + exit(1); + } + } + closedir(dp); + while (rmdir(dir)) { + if (errno == EPERM) { + reset_flags(dir); + if (rmdir(dir) == 0) + break; + } + 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 (;;) { + sleep_ms(10); + if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) + break; + if (current_time_ms() - start < 5000) + continue; + kill_and_wait(pid, &status); + break; + } + remove_dir(cwdbuf); + } +} + +uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, + 0xffffffffffffffff, 0xffffffffffffffff}; + +void execute_one(void) +{ + intptr_t res = 0; + if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { + } + memcpy((void*)0x200000000480, "./file0\000", 8); + res = syscall( + SYS_open, /*file=*/0x200000000480ul, + /*flags=O_NONBLOCK|O_CREAT|O_RDWR|0x80000000000000*/ 0x80000000000206ul, + /*mode=*/0ul); + if (res != -1) + r[0] = res; + syscall(SYS_ftruncate, /*fd=*/r[0], /*len=*/0x3862ul); + memcpy((void*)0x200000000100, "./file0\000", 8); + res = syscall(SYS_open, /*file=*/0x200000000100ul, + /*flags=O_DIRECT*/ 0x10000ul, /*mode=*/0ul); + if (res != -1) + r[1] = res; + *(uint64_t*)0x2000000000c0 = 0x200000000340; + *(uint64_t*)0x2000000000c8 = 0x41; + syscall(SYS_readv, /*fd=*/r[1], /*vec=*/0x2000000000c0ul, /*vlen=*/1ul); + res = syscall(SYS_socket, /*domain=*/2ul, /*type=*/2ul, /*proto=*/0x88); + if (res != -1) + r[2] = res; + res = syscall(SYS_socketpair, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, + /*proto=*/0, /*fds=*/0x200000000180ul); + if (res != -1) + r[3] = *(uint32_t*)0x200000000180; + syscall(SYS_dup2, /*oldfd=*/r[3], /*newfd=*/r[2]); + memcpy((void*)0x200000000140, "./file0\000", 8); + res = + syscall(SYS_open, /*file=*/0x200000000140ul, /*flags=*/0ul, /*mode=*/0ul); + if (res != -1) + r[4] = res; + syscall(SYS_sendfile, /*fd=*/r[4], /*s=*/r[2], /*offset=*/0xcbul, + /*nbytes=*/0x2000ul, /*hdtr=*/0ul, /*sbytes=*/0ul, + /*flags=SF_USER_READAHEAD|SF_NODISKIO|0x2*/ 0xbul); +} +int main(void) +{ + syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, + /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, + /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, + /*fd=*/(intptr_t)-1, /*offset=*/0ul); + const char* reason; + (void)reason; + for (procid = 0; procid < 4; procid++) { + if (fork() == 0) { + use_temporary_dir(); + loop(); + } + } + sleep(1000000); + return 0; +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 + +(cd ../testcases/swap; ./swap -t 3m -i 30 -l 100 > /dev/null 2>&1) & +sleep 5 + +work=/tmp/$prog.dir +rm -rf $work +mkdir $work +cd /tmp/$prog.dir +for i in `jot 30`; do + ( + mkdir d$i + cd d$i + timeout 3m /tmp/$prog > /dev/null 2>&1 & + ) +done +while pgrep -q $prog; do sleep 2; done +while pkill swap; do :; done +wait + +rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core /tmp/$prog.?????? $work +exit 0 diff --git a/tools/test/stress2/misc/syzkaller79.sh b/tools/test/stress2/misc/syzkaller79.sh new file mode 100755 index 000000000000..7413a2034a3d --- /dev/null +++ b/tools/test/stress2/misc/syzkaller79.sh @@ -0,0 +1,82 @@ +#!/bin/sh + +# panic: mutex so_rcv not owned at ../../../kern/uipc_usrreq.c:1750 +# cpuid = 5 +# time = 1746938647 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01e75c5b40 +# vpanic() at vpanic+0x136/frame 0xfffffe01e75c5c70 +# panic() at panic+0x43/frame 0xfffffe01e75c5cd0 +# __mtx_assert() at __mtx_assert+0xa9/frame 0xfffffe01e75c5ce0 +# knote() at knote+0x45/frame 0xfffffe01e75c5d30 +# sowwakeup_locked() at sowwakeup_locked+0xc8/frame 0xfffffe01e75c5d50 +# socantsendmore() at socantsendmore+0x4f/frame 0xfffffe01e75c5d70 +# uipc_shutdown() at uipc_shutdown+0x113/frame 0xfffffe01e75c5db0 +# soshutdown() at soshutdown+0x3e/frame 0xfffffe01e75c5dd0 +# kern_shutdown() at kern_shutdown+0x5e/frame 0xfffffe01e75c5e00 +# amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe01e75c5f30 +# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01e75c5f30 +# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x82281772a, rsp = 0x82092efd8, rbp = 0x82092f000 --- +# KDB: enter: panic +# [ thread pid 54792 tid 1014483 ] +# Stopped at kdb_enter+0x33: movq $0,0x122f192(%rip) +# db> x/s version +# version: FreeBSD 15.0-CURRENT #0 main-n277201-48578dcb6b7e-dirty: Sat May 10 13:10:42 CEST 2025 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO +# db> + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg +set -u +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c <<EOF +// https://syzkaller.appspot.com/bug?id=ac94349a29f2efc40e9274239e4ca9b2c473a4e7 +// autogenerated by syzkaller (https://github.com/google/syzkaller) +// syzkaller.appspot.com/x/repro.c?x=16c074d4580000 + +#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, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, + /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, + /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, + /*fd=*/(intptr_t)-1, /*offset=*/0ul); + const char* reason; + (void)reason; + intptr_t res = 0; + if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { + } + res = syscall(SYS_socketpair, /*domain=*/1ul, /*type=SOCK_SEQPACKET*/ 5ul, + /*proto=*/0, /*fds=*/0x200000000040ul); + if (res != -1) + r[0] = *(uint32_t*)0x200000000044; + syscall(SYS_fcntl, /*fd=*/r[0], /*cmd=*/4ul, /*flags=FASYNC*/ 0x40ul); + syscall(SYS_shutdown, /*fd=*/r[0], /*how=*/2ul); + return 0; +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 + +work=/tmp/$prog.dir +rm -rf $work +mkdir $work +cd /tmp/$prog.dir +timeout 3m /tmp/$prog > /dev/null 2>&1 + +rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core /tmp/$prog.?????? $work +exit 0
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