68 lines
2.2 KiB
Bash
Executable File
68 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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# panic: sched_pickcpu: Failed to find a cpu.
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# cpuid = 1
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# time = 1607419071
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# KDB: stack backtrace:
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# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01bb640770
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# vpanic() at vpanic+0x181/frame 0xfffffe01bb6407c0
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# panic() at panic+0x43/frame 0xfffffe01bb640820
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# sched_pickcpu() at sched_pickcpu+0x4a2/frame 0xfffffe01bb6408d0
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# sched_add() at sched_add+0x5d/frame 0xfffffe01bb640900
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# setrunnable() at setrunnable+0x77/frame 0xfffffe01bb640930
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# wakeup_one() at wakeup_one+0x1d/frame 0xfffffe01bb640950
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# do_lock_umutex() at do_lock_umutex+0x64c/frame 0xfffffe01bb640a40
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# __umtx_op_wait_umutex() at __umtx_op_wait_umutex+0x49/frame 0xfffffe01bb640a80
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# sys__umtx_op() at sys__umtx_op+0x7a/frame 0xfffffe01bb640ac0
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# amd64_syscall() at amd64_syscall+0x147/frame 0xfffffe01bb640bf0
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# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01bb640bf0
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# --- syscall (454, FreeBSD ELF64, sys__umtx_op), rip = 0x800254a8c, rsp = 0x7fffdf3f7e88, rbp = 0x7fffdf3f7eb0 ---
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# KDB: enter: panic
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# [ thread pid 58597 tid 106100 ]
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# Stopped at kdb_enter+0x37: movq $0,0x10a7766(%rip)
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# db> x/s version
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# version: FreeBSD 13.0-CURRENT #0 r368405: Mon Dec 7 10:33:35 CET 2020
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# pho@t2.osted.lan:/usr/src/sys/amd64/compile/PHO
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# db>
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[ `uname -p` != "amd64" ] && exit 0
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# Fixed by r368462
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. ../default.cfg
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cat > /tmp/syzkaller30.c <<EOF
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// https://syzkaller.appspot.com/bug?id=6652adb41773e5c471c98342fefcbfb041af9ac8
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// autogenerated by syzkaller (https://github.com/google/syzkaller)
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// Reported-by: syzbot+4e3b1009de98d2fabcda@syzkaller.appspotmail.com
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#define _GNU_SOURCE
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#include <pwd.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/endian.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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int main(void)
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{
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syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
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*(uint64_t*)0x200000c0 = 0;
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syscall(SYS_cpuset_setaffinity, 2ul, 2ul, 0x100000000000000ul, 0x20ul,
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0x200000c0ul);
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return 0;
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}
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EOF
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mycc -o /tmp/syzkaller30 -Wall -Wextra -O0 /tmp/syzkaller30.c ||
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exit 1
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(cd /tmp; timeout 3m ./syzkaller30)
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rm -rf /tmp/syzkaller30 syzkaller30.c /tmp/syzkaller.*
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exit 0
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