uvm_fault(0xfffffd803f014b58, 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(0xfffffd803f014b58, 0x8, 0, 1) -> e VOP_ACCESS(2631568aa729876e,d,ffff8000ffff8e18,ffff800014a1e900) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 end trace frame: 0xffff800014a1e810, count: 0 ddb> trace VOP_ACCESS(2631568aa729876e,d,ffff8000ffff8e18,ffff800014a1e900) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 sys_unveil(6b65d6ee62ccf128,10,ffff8000ffff8e18) at sys_unveil+0x317 sys/kern/vfs_syscalls.c:925 syscall(70b5cb9d231aae11) at syscall+0x528 Xsyscall(6,0,8,0,2,e245dd1010) at Xsyscall+0x128 end of kernel end trace frame: 0xe44b32ff90, count: -4 ddb> show registers rdi 0xffffffff8109823a VOP_ACCESS+0x3a rsi 0x84 rbp 0xffff800014a1e2f0 rbx 0x2f rdx 0x85 rcx 0xffff800000938000 rax 0xffff800000938000 r8 0x40 r9 0xfffffd803f7c76c0 r10 0x949a2911e3982640 r11 0x1fb206ea494d56 r12 0x100 r13 0 r14 0xffff8000ffff8e18 r15 0xfffffd803f7c76c0 rip 0xffffffff8109824a VOP_ACCESS+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014a1e2a0 ss 0x10 VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb> show proc PROC (syz-executor0) pid=295011 stat=onproc flags process=10 proc=4000000 pri=76, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff80001496d528,0xffffffff8221ec38 process=0xffff8000149b3718 user=0xffff800014a19000, vmspace=0xfffffd803f014b58 estcpu=26, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 869 405094 37030 60929 2 0x10 syz-executor0 * 869 295011 37030 60929 7 0x4000010 syz-executor0 6045 129793 1 0 3 0x100083 ttyin getty 17372 173853 0 0 3 0x14200 bored sosplice 89383 40646 75578 0 3 0x82 nanosleep syz-executor1 37030 37886 75578 0 3 0x82 nanosleep syz-executor0 75578 402789 39748 0 3 0x82 thrsleep syz-fuzzer 75578 406607 39748 0 3 0x4000082 thrsleep syz-fuzzer 75578 375010 39748 0 3 0x4000082 thrsleep syz-fuzzer 75578 214118 39748 0 3 0x4000082 kqread syz-fuzzer 75578 4566 39748 0 3 0x4000082 thrsleep syz-fuzzer 75578 402585 39748 0 3 0x4000082 thrsleep syz-fuzzer 75578 91596 39748 0 3 0x4000082 thrsleep syz-fuzzer 39748 335629 31773 0 3 0x10008a pause ksh 31773 462869 42251 0 3 0x92 select sshd 42251 168374 1 0 3 0x80 select sshd 54986 110118 64700 73 2 0x100090 syslogd 64700 256777 1 0 3 0x100082 netio syslogd 4359 438194 1 77 3 0x100090 poll dhclient 76027 117236 1 0 3 0x80 poll dhclient 15104 348547 0 0 2 0x14200 zerothread 61670 165817 0 0 3 0x14200 aiodoned aiodoned 90539 392961 0 0 3 0x14200 syncer update 19276 477547 0 0 3 0x14200 cleaner cleaner 71194 93796 0 0 3 0x14200 reaper reaper 62104 274134 0 0 3 0x14200 pgdaemon pagedaemon 8462 281665 0 0 3 0x14200 bored crynlk 4559 382788 0 0 3 0x14200 bored crypto 92409 348620 0 0 3 0x40014200 acpi0 acpi0 67591 388504 0 0 3 0x14200 bored softnet 65222 268213 0 0 3 0x14200 bored systqmp 29171 71148 0 0 3 0x14200 bored systq 41608 341684 0 0 3 0x40014200 bored softclock 40965 30347 0 0 3 0x40014200 idle0 1 69417 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper