uvm_fault(0xffffff007f12c528, 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(0xffffff007f12c528, 0x6000118, 0, 1) -> e _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff00705c1100) at _bpf_mtap+0x68 end trace frame: 0xffff800021142370, count: 0 ddb> trace _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff00705c1100) at _bpf_mtap+0x68 bpf_mtap_ether(ffff800021142418,42,ffff800000074340) at bpf_mtap_ether+0xeb ifiq_input(ffff800000171050,ffff800000171290,ffffff00705c1100) 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(0,0,1,0,ffffffff81e25950,ffffff006cc807d8) at Xintr_ioapic_edge19_untramp+0x19f ufs_lookup() at ufs_lookup vfs_lookup(ffff800021142808) at vfs_lookup+0x44b namei(ffffff9c) at namei+0x388 dounlinkat(ffff800021142930,ffff8000210c3780,ffff8000210a6950,890) at dounlinkat+0x88 syscall(0) at syscall+0x3e4 Xsyscall(6,89,7f7fffff8a30,89,ce8c77e3840,7f7fffff8e80) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8e70, count: -14 ddb> show registers rdi 0xffff800000074340 rsi 0xffffff00705c1100 rbp 0xffff8000211422e0 rbx 0x6000100 __kernel_end_phys+0x4000100 rdx 0x1 rcx 0 rax 0x42 r8 0x2 r9 0 r10 0 r11 0xffffffff819f9090 _bus_dmamap_unload r12 0xffff800000074340 r13 0x42 r14 0x1 r15 0 rip 0xffffffff818fe5a8 _bpf_mtap+0x68 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800021142270 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> show proc PROC (syz-executor1) pid=105738 stat=onproc flags process=2 proc=0 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000210c2bc8,0xffff8000210c39e8 process=0xffff8000210a6950 user=0xffff80002113d000, vmspace=0xffffff007f12c528 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 60445 142201 1 0 3 0x100083 ttyin getty 56880 310602 0 0 3 0x14200 bored sosplice 78476 63201 73852 0 3 0x2 biowait syz-executor0 *10386 105738 73852 0 7 0x2 syz-executor1 73852 359710 18931 0 3 0x82 thrsleep syz-fuzzer 73852 189848 18931 0 3 0x4000082 nanosleep syz-fuzzer 73852 367319 18931 0 3 0x4000082 thrsleep syz-fuzzer 73852 228592 18931 0 3 0x4000082 thrsleep syz-fuzzer 73852 183687 18931 0 3 0x4000082 thrsleep syz-fuzzer 73852 296798 18931 0 3 0x4000082 thrsleep syz-fuzzer 73852 57243 18931 0 3 0x4000082 kqread syz-fuzzer 18931 252357 68084 0 3 0x10008a pause ksh 68084 513216 30230 0 3 0x92 select sshd 30230 136612 1 0 3 0x80 select sshd 9801 392729 82630 73 2 0x100090 syslogd 82630 1915 1 0 3 0x100082 netio syslogd 89033 341062 1 77 3 0x100090 poll dhclient 27510 423279 1 0 3 0x80 poll dhclient 33240 296050 0 0 3 0x14200 pgzero zerothread 98226 342469 0 0 3 0x14200 aiodoned aiodoned 31275 450841 0 0 3 0x14200 syncer update 71965 133995 0 0 3 0x14200 cleaner cleaner 23407 147130 0 0 3 0x14200 reaper reaper 94941 369902 0 0 3 0x14200 pgdaemon pagedaemon 41326 411099 0 0 3 0x14200 bored crynlk 62294 164945 0 0 3 0x14200 bored crypto 34300 108533 0 0 3 0x40014200 acpi0 acpi0 2736 103144 0 0 3 0x14200 bored softnet 20114 65379 0 0 3 0x14200 bored systqmp 57509 364630 0 0 3 0x14200 bored systq 34478 37480 0 0 3 0x40014200 bored softclock 84723 432365 0 0 3 0x40014200 idle0 1 28266 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper