uvm_fault(0xffffff007f12ba50, 0x6000118, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> ddb> set $lines = 0 ddb> show panic kernel page fault uvm_fault(0xffffff007f12ba50, 0x6000118, 0, 1) -> e _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff0072dbad00) at _bpf_mtap+0x68 end trace frame: 0xffff800021142450, count: 0 ddb> trace _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff0072dbad00) at _bpf_mtap+0x68 bpf_mtap_ether(ffff8000211424f8,42,ffff800000074340) at bpf_mtap_ether+0xeb ifiq_input(ffff800000171050,ffff800000171290,ffffff0072dbad00) at ifiq_input+0x105 vio_rxeof(ffff800000171050) at vio_rxeof+0x220 vio_rx_intr(ffffffff) at vio_rx_intr+0x23 virtio_check_vqs(ffff80000001c300) at virtio_check_vqs+0x166 intr_handler(0,ffff80000024b980) at intr_handler+0x3f Xintr_ioapic_edge19_untramp(0,3140000,ffffff007afff970,0,ffffff007afff970,ffff800021142778) at Xintr_ioapic_edge19_untramp+0x19f uvmfault_anonget(ffff800021142778,0,1) at uvmfault_anonget+0x69 uvm_fault(ffff8000210c3078,ffff80002113d000,0,44b73f13000) at uvm_fault+0x773 pageflttrap() at pageflttrap+0x197 kerntrap(20) at kerntrap+0x7c alltraps_kern(6,20,44b73f13000,3,20,ffff800021142cd0) at alltraps_kern+0x7b copyout(ffff800021142cd0,ffff800001b3d000,1,ffff800001b3d008,20,ffff800021142af8) at copyout+0x48 ufs_readdir(ffffffff81e20040) at ufs_readdir+0x28d VOP_READDIR(ffffff0071bf0960,ffff8000210c3078,ffff800021142d70,10000) at VOP_READDIR+0x65 sys_getdents(ffff800021142e10,ffff8000210c3078,ffff8000210a5010) at sys_getdents+0x173 syscall(0) at syscall+0x3e4 Xsyscall(6,63,7f7ffffe0610,63,0,44b8ee462c0) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0130, count: -19 ddb> show registers rdi 0xffff800000074340 rsi 0xffffff0072dbad00 rbp 0xffff8000211423c0 rbx 0x6000100 __kernel_end_phys+0x4000100 rdx 0x1 rcx 0 rax 0x42 r8 0x2 r9 0 r10 0 r11 0xffffffff818e6760 _bus_dmamap_unload r12 0xffff800000074340 r13 0x42 r14 0x1 r15 0 rip 0xffffffff8163c6b8 _bpf_mtap+0x68 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800021142350 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> show proc PROC (syz-executor1) pid=195789 stat=onproc flags process=2 proc=0 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000210c2718,0xffff8000210c3790 process=0xffff8000210a5010 user=0xffff80002113d000, vmspace=0xffffff007f12ba50 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 99166 118637 0 0 3 0x14200 bored sosplice 2081 81953 13990 0 3 0x2 biowait syz-executor0 *87496 195789 13990 0 7 0x2 syz-executor1 13990 464200 75452 0 3 0x82 thrsleep syz-fuzzer 13990 361211 75452 0 3 0x4000082 nanosleep syz-fuzzer 13990 356455 75452 0 3 0x4000082 thrsleep syz-fuzzer 13990 329574 75452 0 3 0x4000082 thrsleep syz-fuzzer 13990 311319 75452 0 3 0x4000082 kqread syz-fuzzer 13990 274966 75452 0 3 0x4000082 thrsleep syz-fuzzer 13990 62943 75452 0 3 0x4000082 thrsleep syz-fuzzer 75452 185282 33677 0 3 0x10008a pause ksh 33677 517218 45693 0 3 0x92 select sshd 45693 242043 1 0 3 0x80 select sshd 77123 226188 90190 73 2 0x100090 syslogd 90190 123993 1 0 3 0x100082 netio syslogd 43597 443651 1 77 3 0x100090 poll dhclient 85823 258665 1 0 3 0x80 poll dhclient 63004 71384 0 0 2 0x14200 zerothread 11965 31677 0 0 3 0x14200 aiodoned aiodoned 17693 116735 0 0 3 0x14200 syncer update 63773 375738 0 0 3 0x14200 cleaner cleaner 87552 89197 0 0 3 0x14200 reaper reaper 64900 84551 0 0 3 0x14200 pgdaemon pagedaemon 61169 113632 0 0 3 0x14200 bored crynlk 67054 512515 0 0 3 0x14200 bored crypto 95103 13650 0 0 3 0x40014200 acpi0 acpi0 34534 185067 0 0 3 0x14200 bored softnet 91039 83123 0 0 3 0x14200 bored systqmp 68469 394223 0 0 3 0x14200 bored systq 16298 62329 0 0 3 0x40014200 bored softclock 12557 502060 0 0 3 0x40014200 idle0 1 361128 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper