uvm_fault(0xfffffd807f00c108, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807f00c108, 0x8, 0, 1) -> e VOP_ACCESS(45d548519d0a1333,d,ffff800020fe2018,98b4e0f8508) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 end trace frame: 0xffff8000210b6f70, count: 0 ddb{0}> trace VOP_ACCESS(45d548519d0a1333,d,ffff800020fe2018,98b4e0f8508) at VOP_ACCESS+0x4a sys/kern/vfs_vops.c:189 sys_unveil(e7cf49c4e0cdc1a4,10,ffff800020fe2018) at sys_unveil+0x317 sys/kern/vfs_syscalls.c:924 syscall(f9d4e85e5ee8d4ed) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(f9d4e85e5ee8d4ed) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,8,0,2,988d471d010) at Xsyscall+0x128 end of kernel end trace frame: 0x98b4e0f8590, count: -4 ddb{0}> show registers rdi 0xffffffff81e79a0a VOP_ACCESS+0x3a rsi 0x8e rbp 0xffff8000210b6a50 rbx 0x2f rdx 0x8f rcx 0xffff800001a0f000 rax 0xffff800001a0f000 r8 0x40 r9 0xfffffd807f7c7300 r10 0x1be80b17b10e1df8 r11 0x6c501e58051598b0 r12 0x100 r13 0 r14 0xffff800020fe2018 r15 0xfffffd807f7c7300 rip 0xffffffff81e79a1a VOP_ACCESS+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000210b6a00 ss 0x10 VOP_ACCESS+0x4a: movq 0x8(%r13),%rax ddb{0}> show proc PROC (syz-executor0) pid=476136 stat=onproc flags process=10 proc=4000000 pri=72, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800020fe39e0,0xffffffff82236368 process=0xffff80002101ba58 user=0xffff8000210b2000, vmspace=0xfffffd807f00c108 estcpu=22, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69879 126546 10676 60929 2 0x10 syz-executor0 *69879 476136 10676 60929 7 0x4000010 syz-executor0 10676 523480 51652 0 3 0x82 nanosleep syz-executor0 21394 408659 51652 0 2 0x2 syz-executor1 58034 400620 1 0 3 0x100083 ttyin getty 30487 295821 0 0 3 0x14200 bored sosplice 51652 53393 20952 0 3 0x82 kqread syz-fuzzer 51652 469629 20952 0 3 0x4000082 nanosleep syz-fuzzer 51652 27083 20952 0 3 0x4000082 thrsleep syz-fuzzer 51652 230661 20952 0 3 0x4000082 thrsleep syz-fuzzer 51652 297321 20952 0 3 0x4000082 thrsleep syz-fuzzer 51652 206614 20952 0 3 0x4000082 thrsleep syz-fuzzer 51652 512254 20952 0 3 0x4000082 thrsleep syz-fuzzer 51652 107440 20952 0 3 0x4000082 nanosleep syz-fuzzer 51652 261229 20952 0 3 0x4000082 thrsleep syz-fuzzer 51652 464554 20952 0 3 0x4000082 thrsleep syz-fuzzer 20952 447287 21287 0 3 0x10008a pause ksh 21287 408434 48411 0 3 0x92 select sshd 48411 340977 1 0 3 0x80 select sshd 43202 64241 92035 73 7 0x100010 syslogd 92035 113208 1 0 3 0x100082 netio syslogd 45560 341364 1 77 3 0x100090 poll dhclient 41879 310834 1 0 3 0x80 poll dhclient 86449 392785 0 0 3 0x14200 pgzero zerothread 8040 453603 0 0 3 0x14200 aiodoned aiodoned 57212 161573 0 0 3 0x14200 syncer update 37557 13823 0 0 3 0x14200 cleaner cleaner 42156 391759 0 0 3 0x14200 reaper reaper 32877 473186 0 0 3 0x14200 pgdaemon pagedaemon 16520 13808 0 0 3 0x14200 bored crynlk 64502 433408 0 0 3 0x14200 bored crypto 89773 8894 0 0 3 0x40014200 acpi0 acpi0 88850 5363 0 0 3 0x40014200 idle1 12951 397557 0 0 3 0x14200 bored softnet 60000 108322 0 0 3 0x14200 bored systqmp 48661 263113 0 0 3 0x14200 bored systq 80589 312134 0 0 3 0x40014200 bored softclock 24072 315425 0 0 3 0x40014200 idle0 1 442541 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper