uvm_fault(0xfffffd803f014108, 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(0xfffffd803f014108, 0x8, 0, 1) -> e VOP_ACCESS(42bee1dd64e9de87,d,ffff8000149c1c38,ffff8000149b9c60) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 end trace frame: 0xffff8000149b9b70, count: 0 ddb> trace VOP_ACCESS(42bee1dd64e9de87,d,ffff8000149c1c38,ffff8000149b9c60) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 sys_unveil(6b9a10555334d8e8,10,ffff8000149c1c38) at sys_unveil+0x317 sys/kern/vfs_syscalls.c:925 syscall(b317e4d70550b86) at syscall+0x528 Xsyscall(6,0,8,0,2,afc4703c010) at Xsyscall+0x128 end of kernel end trace frame: 0xafeda7ef4a0, count: -4 ddb> show registers rdi 0xffffffff8109823a VOP_ACCESS+0x3a rsi 0x84 rbp 0xffff8000149b9650 rbx 0x2f rdx 0x85 rcx 0xffff800000938000 rax 0xffff800000938000 r8 0x40 r9 0xfffffd803f7c7960 r10 0x9465efaad2600f80 r11 0x969e9eb6e5d9a066 r12 0x100 r13 0 r14 0xffff8000149c1c38 r15 0xfffffd803f7c7960 rip 0xffffffff8109824a VOP_ACCESS+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000149b9600 ss 0x10 VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb> show proc PROC (syz-executor0) pid=444028 stat=onproc flags process=10 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000149c12d8,0xffffffff8221ec38 process=0xffff8000149b2368 user=0xffff8000149b4000, vmspace=0xfffffd803f014108 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78226 328127 39835 60929 2 0x10 syz-executor0 *78226 444028 39835 60929 7 0x4000010 syz-executor0 20480 406047 1 0 3 0x100083 ttyin getty 99838 431017 63701 0 2 0x2 syz-executor1 5402 218366 0 0 3 0x14200 bored sosplice 39835 299575 63701 0 2 0x482 syz-executor0 63701 396295 80436 0 3 0x82 thrsleep syz-fuzzer 63701 479475 80436 0 3 0x4000082 nanosleep syz-fuzzer 63701 223870 80436 0 3 0x4000082 thrsleep syz-fuzzer 63701 355638 80436 0 3 0x4000082 kqread syz-fuzzer 63701 406983 80436 0 3 0x4000082 thrsleep syz-fuzzer 63701 85730 80436 0 3 0x4000082 thrsleep syz-fuzzer 63701 339514 80436 0 3 0x4000082 thrsleep syz-fuzzer 63701 207054 80436 0 3 0x4000082 thrsleep syz-fuzzer 80436 408050 12156 0 3 0x10008a pause ksh 12156 376297 70881 0 3 0x92 select sshd 70881 301408 1 0 3 0x80 select sshd 10464 261828 63331 73 2 0x100090 syslogd 63331 246151 1 0 3 0x100082 netio syslogd 73432 519650 1 77 3 0x100090 poll dhclient 90354 404903 1 0 3 0x80 poll dhclient 62177 178888 0 0 2 0x14200 zerothread 14766 261669 0 0 3 0x14200 aiodoned aiodoned 90221 414929 0 0 3 0x14200 syncer update 86606 198057 0 0 3 0x14200 cleaner cleaner 97432 506174 0 0 3 0x14200 reaper reaper 40981 170390 0 0 3 0x14200 pgdaemon pagedaemon 58597 246655 0 0 3 0x14200 bored crynlk 12512 218858 0 0 3 0x14200 bored crypto 37546 358731 0 0 3 0x40014200 acpi0 acpi0 26628 408120 0 0 3 0x14200 bored softnet 65382 238972 0 0 3 0x14200 bored systqmp 534 450223 0 0 3 0x14200 bored systq 46557 440992 0 0 3 0x40014200 bored softclock 87282 213074 0 0 3 0x40014200 idle0 1 358226 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper