uvm_fault(0xfffffd803f015000, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb> ddb> set $lines = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f015000, 0x8, 0, 1) -> e VOP_ACCESS(12654dc5c6b6e6f7,d,ffff8000ffff59e0,ffff800014a0a440) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 end trace frame: 0xffff800014a0a350, count: 0 ddb> trace VOP_ACCESS(12654dc5c6b6e6f7,d,ffff8000ffff59e0,ffff800014a0a440) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 sys_unveil(4e0e013f0a1f720f,10,ffff8000ffff59e0) at sys_unveil+0x317 sys/kern/vfs_syscalls.c:925 syscall(59ba60005eb21f8) at syscall+0x528 Xsyscall(6,0,8,0,2,ec7b6da2010) at Xsyscall+0x128 end of kernel end trace frame: 0xeca0b5c5760, count: -4 ddb> show registers rdi 0xffffffff81add1fa VOP_ACCESS+0x3a rsi 0x84 rbp 0xffff800014a09e30 rbx 0x2f rdx 0x85 rcx 0xffff80000213a000 rax 0xffff80000213a000 r8 0x40 r9 0xfffffd803f7c75a0 r10 0x3025a0ffc72dba6d r11 0x35264122d642b502 r12 0x100 r13 0 r14 0xffff8000ffff59e0 r15 0xfffffd803f7c75a0 rip 0xffffffff81add20a VOP_ACCESS+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014a09de0 ss 0x10 VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb> show proc PROC (syz-executor1) pid=472067 stat=onproc flags process=10 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff4bd0,0xffffffff82206ba8 process=0xffff8000149b2368 user=0xffff800014a05000, vmspace=0xfffffd803f015000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61767 468538 60640 60929 2 0x10 syz-executor1 *61767 472067 60640 60929 7 0x4000010 syz-executor1 60640 249773 87720 0 3 0x82 nanosleep syz-executor1 10533 293024 87720 0 2 0x2 syz-executor0 98769 498306 1 0 3 0x100083 ttyin getty 55994 232011 0 0 3 0x14200 bored sosplice 87720 246376 23088 0 3 0x82 thrsleep syz-fuzzer 87720 254522 23088 0 2 0x4000482 syz-fuzzer 87720 429405 23088 0 3 0x4000082 thrsleep syz-fuzzer 87720 372775 23088 0 3 0x4000082 thrsleep syz-fuzzer 87720 147809 23088 0 3 0x4000082 kqread syz-fuzzer 87720 169249 23088 0 3 0x4000082 thrsleep syz-fuzzer 87720 439645 23088 0 3 0x4000082 thrsleep syz-fuzzer 23088 429696 89505 0 3 0x10008a pause ksh 89505 492332 32007 0 3 0x92 select sshd 32007 300828 1 0 3 0x80 select sshd 94084 124037 85635 73 2 0x100090 syslogd 85635 427464 1 0 3 0x100082 netio syslogd 58042 318314 1 77 3 0x100090 poll dhclient 57897 267113 1 0 3 0x80 poll dhclient 7053 422016 0 0 2 0x14200 zerothread 5602 121393 0 0 3 0x14200 aiodoned aiodoned 39150 428303 0 0 3 0x14200 syncer update 15699 67764 0 0 3 0x14200 cleaner cleaner 46475 111043 0 0 3 0x14200 reaper reaper 49477 81073 0 0 3 0x14200 pgdaemon pagedaemon 96971 131676 0 0 3 0x14200 bored crynlk 10854 72077 0 0 3 0x14200 bored crypto 76121 318500 0 0 3 0x40014200 acpi0 acpi0 63311 116557 0 0 3 0x14200 bored softnet 9908 522912 0 0 3 0x14200 bored systqmp 91640 189926 0 0 3 0x14200 bored systq 13906 420344 0 0 3 0x40014200 bored softclock 77900 434642 0 0 3 0x40014200 idle0 1 239313 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper