uvm_fault(0xffffff007f12b528, 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(0xffffff007f12b528, 0x6000118, 0, 1) -> e _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff00710b7e00) at _bpf_mtap+0x68 end trace frame: 0xffff800021169f10, count: 0 ddb> trace _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff00710b7e00) at _bpf_mtap+0x68 bpf_mtap_ether(ffff800021169fb8,42,ffff800000074340) at bpf_mtap_ether+0xeb ifiq_input(ffff800000171050,ffff800000171290,ffffff00710b7e00) 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,ffffff0069100360,0,ffffff0069100330,ffff80002116a6a8) at Xintr_ioapic_edge19_untramp+0x19f cache_lookup(ffff80002116a660,0,ffffff0069749c30) at cache_lookup+0x3a3 ufs_lookup() at ufs_lookup+0x160 VOP_LOOKUP(ffffff0069100330,ffff80002116a630,ffffff0069100330) at VOP_LOOKUP+0x56 vfs_lookup(ffff80002116a6c8) at vfs_lookup+0x44b namei(0) at namei+0x388 vn_open(30001,ffff8000210c3780,30001) at vn_open+0x7c doopenat(ffff80002116a8c0,ffff8000210c3780,ffff8000210a5010,50,7f7ffffbe298,e396d46d4be1f2bf) at doopenat+0x1ed syscall(0) at syscall+0x3e4 Xsyscall(6,5,e15cd799000,5,0,0) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe380, count: -17 ddb> show registers rdi 0xffff800000074340 rsi 0xffffff00710b7e00 rbp 0xffff800021169e80 rbx 0x6000100 __kernel_end_phys+0x4000100 rdx 0x1 rcx 0 rax 0x42 r8 0x2 r9 0 r10 0 r11 0xffffffff81214d30 _bus_dmamap_unload r12 0xffff800000074340 r13 0x42 r14 0x1 r15 0 rip 0xffffffff81732338 _bpf_mtap+0x68 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800021169e10 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> show proc PROC (syz-executor1) pid=96998 stat=onproc flags process=2 proc=0 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000210c32d0,0xffff8000ffffd2d8 process=0xffff8000210a5010 user=0xffff800021165000, vmspace=0xffffff007f12b528 estcpu=36, cpticks=1, pctcpu=0.1 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 664 432717 52481 0 2 0 syz-executor0 22153 479033 1 0 3 0x100083 ttyin getty 53414 213835 0 0 3 0x14200 bored sosplice *52189 96998 62492 0 7 0x2 syz-executor1 52481 54495 62492 0 3 0x82 nanosleep syz-executor0 62492 301700 84075 0 3 0x82 thrsleep syz-fuzzer 62492 23447 84075 0 3 0x4000082 nanosleep syz-fuzzer 62492 234516 84075 0 3 0x4000082 thrsleep syz-fuzzer 62492 513741 84075 0 3 0x4000082 thrsleep syz-fuzzer 62492 25911 84075 0 3 0x4000082 kqread syz-fuzzer 62492 366345 84075 0 3 0x4000082 thrsleep syz-fuzzer 62492 337819 84075 0 3 0x4000082 thrsleep syz-fuzzer 84075 249555 81588 0 3 0x10008a pause ksh 81588 435945 50497 0 3 0x92 select sshd 50497 479824 1 0 3 0x80 select sshd 8250 301518 905 73 2 0x100090 syslogd 905 58227 1 0 3 0x100082 netio syslogd 21613 63114 1 77 3 0x100090 poll dhclient 21899 221197 1 0 3 0x80 poll dhclient 10921 337573 0 0 3 0x14200 pgzero zerothread 33302 330943 0 0 3 0x14200 aiodoned aiodoned 17376 313450 0 0 3 0x14200 syncer update 47421 450840 0 0 3 0x14200 cleaner cleaner 88761 216184 0 0 3 0x14200 reaper reaper 65 149977 0 0 3 0x14200 pgdaemon pagedaemon 94288 115518 0 0 3 0x14200 bored crynlk 27884 426161 0 0 3 0x14200 bored crypto 95182 364812 0 0 3 0x40014200 acpi0 acpi0 60735 29379 0 0 3 0x14200 bored softnet 89905 461473 0 0 3 0x14200 bored systqmp 65632 180526 0 0 3 0x14200 bored systq 86622 50275 0 0 3 0x40014200 bored softclock 35613 82005 0 0 3 0x40014200 idle0 1 145122 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper