uvm_fault(0xfffffd803f015840, 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(0xfffffd803f015840, 0x8, 0, 1) -> e VOP_ACCESS(d4312bb73e05113d,d,ffff80001496c970,ffff8000149f3ff0) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 end trace frame: 0xffff8000149f3f00, count: 0 ddb> trace VOP_ACCESS(d4312bb73e05113d,d,ffff80001496c970,ffff8000149f3ff0) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 sys_unveil(7b23796809a0379,10,ffff80001496c970) at sys_unveil+0x317 sys/kern/vfs_syscalls.c:924 syscall(9a523af8aea474e) at syscall+0x528 Xsyscall(6,0,8,0,2,f07f7b76010) at Xsyscall+0x128 end of kernel end trace frame: 0xf0a0eee78e0, count: -4 ddb> show registers rdi 0xffffffff8100d7da VOP_ACCESS+0x3a rsi 0x84 rbp 0xffff8000149f39e0 rbx 0x2f rdx 0x85 rcx 0xffff800001138000 rax 0xffff800001138000 r8 0x40 r9 0xfffffd803f7c79c0 r10 0xca6fad8df277dc57 r11 0x164c8f4dcacf4acc r12 0x100 r13 0 r14 0xffff80001496c970 r15 0xfffffd803f7c79c0 rip 0xffffffff8100d7ea VOP_ACCESS+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000149f3990 ss 0x10 VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb> show proc PROC (syz-executor0) pid=374965 stat=onproc flags process=10 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80001496d780,0xffffffff8223d7d0 process=0xffff8000149c8020 user=0xffff8000149ef000, vmspace=0xfffffd803f015840 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 55146 300741 58778 60929 2 0x10 syz-executor0 *55146 374965 58778 60929 7 0x4000010 syz-executor0 58778 439396 53430 0 2 0x482 syz-executor0 73004 496688 53430 0 2 0x2 syz-executor1 93404 55986 1 0 3 0x100083 ttyin getty 15847 203195 0 0 3 0x14200 bored sosplice 53430 222901 78547 0 3 0x82 thrsleep syz-fuzzer 53430 170126 78547 0 3 0x4000082 nanosleep syz-fuzzer 53430 394762 78547 0 3 0x4000082 thrsleep syz-fuzzer 53430 170069 78547 0 3 0x4000082 thrsleep syz-fuzzer 53430 48330 78547 0 3 0x4000082 kqread syz-fuzzer 53430 515669 78547 0 3 0x4000082 thrsleep syz-fuzzer 53430 293083 78547 0 3 0x4000082 thrsleep syz-fuzzer 78547 345215 7685 0 3 0x10008a pause ksh 7685 101049 69152 0 3 0x92 select sshd 69152 274095 1 0 3 0x80 select sshd 2105 520858 71730 73 2 0x100090 syslogd 71730 175775 1 0 3 0x100082 netio syslogd 80114 290432 1 77 3 0x100090 poll dhclient 40978 78782 1 0 3 0x80 poll dhclient 56914 217318 0 0 2 0x14200 zerothread 76467 294649 0 0 3 0x14200 aiodoned aiodoned 61757 458975 0 0 3 0x14200 syncer update 2182 360358 0 0 3 0x14200 cleaner cleaner 58831 522308 0 0 3 0x14200 reaper reaper 60578 500561 0 0 3 0x14200 pgdaemon pagedaemon 40140 68775 0 0 3 0x14200 bored crynlk 51220 269565 0 0 3 0x14200 bored crypto 571 447886 0 0 3 0x40014200 acpi0 acpi0 24392 138356 0 0 3 0x14200 bored softnet 34498 221504 0 0 3 0x14200 bored systqmp 3211 252801 0 0 3 0x14200 bored systq 27189 444739 0 0 3 0x40014200 bored softclock 97885 511895 0 0 3 0x40014200 idle0 1 524172 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper