uvm_fault(0xffffff007f125210, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at VOP_ACCESS+0x3d: movq 0x8(%r13),%rax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffff007f125210, 0x8, 0, 1) -> e VOP_ACCESS(0,ffff8000210d8720,0,ffff800021189988) at VOP_ACCESS+0x3d sys/kern/vfs_vops.c:189 end trace frame: 0xffff800021189930, count: 0 ddb{0}> trace VOP_ACCESS(0,ffff8000210d8720,0,ffff800021189988) at VOP_ACCESS+0x3d sys/kern/vfs_vops.c:189 sys_unveil(720,ffff8000210d8720,ffff800021189a10) at sys_unveil+0x263 sys/kern/vfs_syscalls.c:925 syscall(0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,8,0,2,9b046c14010) at Xsyscall+0x128 end of kernel end trace frame: 0x9b2e3df18a0, count: -4 ddb{0}> show registers rdi 0 rsi 0xffffffff8118d3fd VOP_ACCESS+0x2d rbp 0xffff800021189420 rbx 0x9b2e3df1818 rdx 0xffff8000016d7000 rcx 0x1d7 rax 0xffff8000016d7000 r8 0x40 r9 0xffffff007f7c7840 r10 0x1eb3b62936e624ac r11 0xffffffff81af9d40 ufs_access r12 0x100 r13 0 r14 0xffff8000210d8720 r15 0xffffff007f7c7840 rip 0xffffffff8118d40d VOP_ACCESS+0x3d cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff8000211893d0 ss 0x10 VOP_ACCESS+0x3d: movq 0x8(%r13),%rax ddb{0}> show proc PROC (syz-executor0) pid=509932 stat=onproc flags process=10 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000210d8e28,0xffff8000210d99f0 process=0xffff80002117ccb8 user=0xffff800021184000, vmspace=0xffffff007f125210 estcpu=32, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 43237 299573 26506 0 2 0 syz-executor1 43237 514444 26506 0 3 0x4000080 ttyin syz-executor1 21408 172901 49742 60929 2 0x10 syz-executor0 *21408 509932 49742 60929 7 0x4000010 syz-executor0 26506 463438 35173 0 3 0x82 nanosleep syz-executor1 49742 354406 35173 0 7 0x482 syz-executor0 98751 104488 0 0 3 0x14200 bored sosplice 35173 268426 79416 0 3 0x82 thrsleep syz-fuzzer 35173 453985 79416 0 2 0x4000482 syz-fuzzer 35173 412299 79416 0 3 0x4000082 thrsleep syz-fuzzer 35173 315676 79416 0 2 0x4000482 syz-fuzzer 35173 153843 79416 0 3 0x4000082 thrsleep syz-fuzzer 35173 239874 79416 0 3 0x4000082 thrsleep syz-fuzzer 35173 497984 79416 0 2 0x4000482 syz-fuzzer 35173 17156 79416 0 3 0x4000082 thrsleep syz-fuzzer 35173 432553 79416 0 3 0x4000082 thrsleep syz-fuzzer 35173 514426 79416 0 3 0x4000082 kqread syz-fuzzer 79416 518564 87008 0 3 0x10008a pause ksh 87008 235780 91655 0 3 0x92 select sshd 62372 74284 1 0 3 0x100083 ttyin getty 91655 409825 1 0 3 0x80 select sshd 99649 234665 63970 73 2 0x100090 syslogd 63970 226111 1 0 3 0x100082 netio syslogd 92073 59791 1 77 3 0x100090 poll dhclient 36424 145658 1 0 3 0x80 poll dhclient 68825 180732 0 0 2 0x14200 zerothread 79685 320447 0 0 3 0x14200 aiodoned aiodoned 49986 295450 0 0 3 0x14200 syncer update 1699 464978 0 0 3 0x14200 cleaner cleaner 25200 17041 0 0 3 0x14200 reaper reaper 3197 221507 0 0 3 0x14200 pgdaemon pagedaemon 71341 454538 0 0 3 0x14200 bored crynlk 78203 18096 0 0 3 0x14200 bored crypto 78178 491326 0 0 3 0x40014200 acpi0 acpi0 95550 138454 0 0 3 0x40014200 idle1 12732 13405 0 0 3 0x14200 bored softnet 79624 125648 0 0 3 0x14200 bored systqmp 46220 466299 0 0 3 0x14200 bored systq 32375 234097 0 0 3 0x40014200 bored softclock 7439 149850 0 0 3 0x40014200 idle0 1 163626 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper