uvm_fault(0xffffff007f12b948, 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(0xffffff007f12b948, 0x6000118, 0, 1) -> e _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff007ccb2400) at _bpf_mtap+0x68 end trace frame: 0xffff8000211129b0, count: 0 ddb> trace _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff007ccb2400) at _bpf_mtap+0x68 bpf_mtap_ether(ffff800021112a58,d3,ffff800000074340) at bpf_mtap_ether+0xeb ifiq_input(ffff800000171050,ffff800000171290,ffffff007ccb2400) 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,c0003930b0,24bb318e,0,0,8edde7) at Xintr_ioapic_edge19_untramp+0x19f end of kernel end trace frame: 0xc000fcbcc0, count: -8 ddb> show registers rdi 0xffff800000074340 rsi 0xffffff007ccb2400 rbp 0xffff800021112920 rbx 0x6000100 __kernel_end_phys+0x4000100 rdx 0x1 rcx 0 rax 0xd3 r8 0x2 r9 0 r10 0 r11 0xffffffff81214d30 _bus_dmamap_unload r12 0xffff800000074340 r13 0xd3 r14 0x1 r15 0 rip 0xffffffff81732338 _bpf_mtap+0x68 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff8000211128b0 ss 0 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> show proc PROC (syz-fuzzer) pid=5136 stat=onproc flags process=2 proc=4000000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000210c2010,0xffff8000210c32e0 process=0xffff8000210a5010 user=0xffff80002110d000, vmspace=0xffffff007f12b948 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78489 211315 70559 0 2 0x4081000 syz-executor1 78489 156721 70559 0 3 0x4003000 suspend syz-executor1 63179 134156 0 0 3 0x14200 bored sosplice 70559 406711 32853 0 3 0x82 wait syz-executor1 83381 433722 32853 0 2 0x2 syz-executor0 32853 217149 33436 0 3 0x82 thrsleep syz-fuzzer 32853 366131 33436 0 3 0x4000082 nanosleep syz-fuzzer 32853 520342 33436 0 3 0x4000082 thrsleep syz-fuzzer 32853 156647 33436 0 3 0x4000082 thrsleep syz-fuzzer 32853 169669 33436 0 3 0x4000082 thrsleep syz-fuzzer 32853 132467 33436 0 3 0x4000082 thrsleep syz-fuzzer *32853 5136 33436 0 7 0x4000002 syz-fuzzer 33436 128377 79440 0 3 0x10008a pause ksh 79440 54527 4248 0 3 0x92 select sshd 48240 381801 1 0 3 0x100083 ttyin getty 4248 482738 1 0 3 0x80 select sshd 6800 260427 70026 73 2 0x100090 syslogd 70026 83682 1 0 3 0x100082 netio syslogd 2226 418251 1 77 3 0x100090 poll dhclient 47467 386109 1 0 3 0x80 poll dhclient 44628 387954 0 0 2 0x14200 zerothread 40635 147134 0 0 3 0x14200 aiodoned aiodoned 62909 126979 0 0 3 0x14200 syncer update 94940 9913 0 0 3 0x14200 cleaner cleaner 74622 287404 0 0 3 0x14200 reaper reaper 36976 406834 0 0 3 0x14200 pgdaemon pagedaemon 89050 118972 0 0 3 0x14200 bored crynlk 12791 498800 0 0 3 0x14200 bored crypto 15894 138168 0 0 3 0x40014200 acpi0 acpi0 42277 112842 0 0 3 0x14200 bored softnet 47942 159015 0 0 3 0x14200 bored systqmp 52587 351173 0 0 3 0x14200 bored systq 65512 260860 0 0 3 0x40014200 bored softclock 41414 292925 0 0 3 0x40014200 idle0 1 279226 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper