uvm_fault(0xfffffd803f014318, 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(0xfffffd803f014318, 0x8, 0, 1) -> e VOP_ACCESS(a48a170b574295bc,d,ffff800014956280,ffff800014a30df0) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 end trace frame: 0xffff800014a30d00, count: 0 ddb> trace VOP_ACCESS(a48a170b574295bc,d,ffff800014956280,ffff800014a30df0) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 sys_unveil(3b32ff32b6bb4771,10,ffff800014956280) at sys_unveil+0x317 sys/kern/vfs_syscalls.c:925 syscall(28edf18940eaa5b2) at syscall+0x528 Xsyscall(6,0,8,0,2,ad564688010) at Xsyscall+0x128 end of kernel end trace frame: 0xad7dbc7a410, count: -4 ddb> show registers rdi 0xffffffff8109823a VOP_ACCESS+0x3a rsi 0x84 rbp 0xffff800014a307e0 rbx 0x2f rdx 0x85 rcx 0xffff800001738000 rax 0xffff800001738000 r8 0x40 r9 0xfffffd803f7c7a80 r10 0xc4cd00cd37ef9019 r11 0xef8a1a02a19a200f r12 0x100 r13 0 r14 0xffff800014956280 r15 0xfffffd803f7c7a80 rip 0xffffffff8109824a VOP_ACCESS+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014a30790 ss 0x10 VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb> show proc PROC (syz-executor1) pid=423164 stat=onproc flags process=10 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014956988,0xffffffff8221ec38 process=0xffff8000149b2368 user=0xffff800014a2b000, vmspace=0xfffffd803f014318 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 20962 511129 8709 60929 2 0x10 syz-executor1 *20962 423164 8709 60929 7 0x4000010 syz-executor1 8709 142092 67240 0 2 0x482 syz-executor1 28807 70516 67240 0 2 0x2 syz-executor0 19669 99214 1 0 3 0x100083 ttyopn getty 8357 43209 0 0 3 0x14200 bored sosplice 67240 199449 30955 0 3 0x82 thrsleep syz-fuzzer 67240 34449 30955 0 2 0x4000482 syz-fuzzer 67240 170510 30955 0 3 0x4000082 thrsleep syz-fuzzer 67240 188257 30955 0 3 0x4000082 thrsleep syz-fuzzer 67240 488281 30955 0 3 0x4000082 kqread syz-fuzzer 67240 429858 30955 0 3 0x4000082 thrsleep syz-fuzzer 67240 239876 30955 0 3 0x4000082 thrsleep syz-fuzzer 67240 323316 30955 0 3 0x4000082 thrsleep syz-fuzzer 30955 170274 12481 0 3 0x10008a pause ksh 12481 69948 40894 0 3 0x92 select sshd 40894 365632 1 0 3 0x80 select sshd 48135 480654 12791 73 2 0x100090 syslogd 12791 356035 1 0 3 0x100082 netio syslogd 23768 490190 1 77 3 0x100090 poll dhclient 13023 110824 1 0 3 0x80 poll dhclient 96171 132008 0 0 2 0x14200 zerothread 14681 470283 0 0 3 0x14200 aiodoned aiodoned 8745 37689 0 0 3 0x14200 syncer update 56049 337875 0 0 3 0x14200 cleaner cleaner 58541 195947 0 0 3 0x14200 reaper reaper 93492 68985 0 0 3 0x14200 pgdaemon pagedaemon 62595 186046 0 0 3 0x14200 bored crynlk 35623 263944 0 0 3 0x14200 bored crypto 48553 512425 0 0 3 0x40014200 acpi0 acpi0 42604 461583 0 0 3 0x14200 bored softnet 92254 333993 0 0 3 0x14200 bored systqmp 84638 158700 0 0 3 0x14200 bored systq 5329 482377 0 0 3 0x40014200 bored softclock 84665 435405 0 0 3 0x40014200 idle0 1 70421 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper