diff options
Diffstat (limited to 'tools/test/stress2/misc/syzkaller83.sh')
| -rwxr-xr-x | tools/test/stress2/misc/syzkaller83.sh | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/syzkaller83.sh b/tools/test/stress2/misc/syzkaller83.sh new file mode 100755 index 000000000000..418bfd75982d --- /dev/null +++ b/tools/test/stress2/misc/syzkaller83.sh @@ -0,0 +1,168 @@ +#!/bin/sh + +# panic: handle_workitem_remove: bad file delta +# cpuid = 2 +# time = 1753799597 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00ffc84b70 +# vpanic() at vpanic+0x136/frame 0xfffffe00ffc84ca0 +# panic() at panic+0x43/frame 0xfffffe00ffc84d00 +# handle_workitem_remove() at handle_workitem_remove+0x68d/frame 0xfffffe00ffc84d70 +# handle_workitem_remove() at handle_workitem_remove+0x52d/frame 0xfffffe00ffc84de0 +# process_worklist_item() at process_worklist_item+0x21e/frame 0xfffffe00ffc84e70 +# softdep_process_worklist() at softdep_process_worklist+0xbd/frame 0xfffffe00ffc84eb0 +# softdep_flush() at softdep_flush+0x10f/frame 0xfffffe00ffc84ef0 +# fork_exit() at fork_exit+0x82/frame 0xfffffe00ffc84f30 +# fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00ffc84f30 +# --- trap 0, rip = 0, rsp = 0, rbp = 0 --- +# KDB: enter: panic +# [ thread pid 16 tid 100253 ] +# Stopped at kdb_enter+0x33: movq $0,0x1230852(%rip) +# db> x/s version +# version: FreeBSD 15.0-CURRENT #0 main-n279158-f1f77adfd9bc-dirty: Tue Jul 29 15:49:28 CEST 2025 +# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg +set -u +prog=$(basename "$0" .sh) +cat > /tmp/$prog.c <<EOF +// https://syzkaller.appspot.com/bug?id=0a60b828818a364deb4721d58b2ed5167b1f6296 +// autogenerated by syzkaller (https://github.com/google/syzkaller) + +#define _GNU_SOURCE + +#include <sys/types.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/syscall.h> +#include <sys/wait.h> +#include <time.h> +#include <unistd.h> + +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 (;;) { + 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; + } + } +} + +uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; + +void execute_one(void) +{ + intptr_t res = 0; + if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { + } + memcpy((void*)0x200000000180, "./file0\000", 8); + syscall(SYS_mkdir, /*path=*/0x200000000180ul, /*mode=*/0ul); + memcpy((void*)0x200000000000, "./file0/file0\000", 14); + syscall(SYS_mkdir, /*path=*/0x200000000000ul, /*mode=*/0ul); + memcpy((void*)0x200000000080, ".\000", 2); + res = syscall(SYS_open, /*file=*/0x200000000080ul, + /*flags=O_DIRECT*/ 0x10000ul, /*mode=*/0ul); + if (res != -1) + r[0] = res; + memcpy((void*)0x200000000080, ".\000", 2); + res = + syscall(SYS_open, /*file=*/0x200000000080ul, /*flags=*/0ul, /*mode=*/0ul); + if (res != -1) + r[1] = res; + memcpy((void*)0x200000000080, ".\000", 2); + res = syscall(SYS_open, /*file=*/0x200000000080ul, /*flags=O_NONBLOCK*/ 4ul, + /*mode=*/0ul); + if (res != -1) + r[2] = res; + memcpy((void*)0x200000000100, "./file1\000", 8); + syscall(SYS_mkdirat, /*fd=*/r[2], /*path=*/0x200000000100ul, + /*mode=S_IROTH|S_IWUSR*/ 0x84ul); + memcpy((void*)0x200000000340, "./file0/file0\000", 14); + memcpy((void*)0x200000000380, "./file1\000", 8); + syscall(SYS_renameat, /*oldfd=*/r[0], /*old=*/0x200000000340ul, + /*newfd=*/r[1], /*new=*/0x200000000380ul); +} +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 || 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 |