uvm_fault(0xffffff003f12bc60, 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(0xffffff003f12bc60, 0x6000118, 0, 1) -> e _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff003f146200) at _bpf_mtap+0x68 sys/net/bpf.c:1261 end trace frame: 0xffff800014a1c3e0, count: 0 ddb> trace _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff003f146200) at _bpf_mtap+0x68 sys/net/bpf.c:1261 bpf_mtap_ether(ffff800014a1c488,66,ffff800000074340) at bpf_mtap_ether+0xeb ifiq_input(ffff800000171050,ffff800000171290,ffffff003f146200) at ifiq_input+0x105 sys/net/ifq.c:500 vio_rxeof(ffff800000171050) at vio_rxeof+0x220 sys/dev/pv/if_vio.c:1045 vio_rx_intr(ffffffff) at vio_rx_intr+0x23 sys/dev/pv/if_vio.c:1057 virtio_check_vqs(ffff80000001c300) at virtio_check_vqs+0x166 sys/dev/pv/virtio.c:228 intr_handler(0,ffff80000024b980) at intr_handler+0x3f sys/arch/amd64/amd64/intr.c:530 Xintr_ioapic_edge19_untramp(0,ffffffff81e1a4e0,7f7fffff9b38,0,ffff800014a1c730,ffff8000ffffc008) at Xintr_ioapic_edge19_untramp+0x19f sys_clock_gettime(ffff800014a1c730,ffff8000ffffc008,10) at sys_clock_gettime+0x6 sys/kern/kern_time.c:157 syscall(0) at syscall+0x3e4 Xsyscall(6,57,f362b4be000,57,0,16) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9bc0, count: -11 ddb> show registers rdi 0xffff800000074340 rsi 0xffffff003f146200 rbp 0xffff800014a1c350 rbx 0x6000100 __kernel_end_phys+0x4000100 rdx 0x1 rcx 0 rax 0x66 r8 0x2 r9 0 r10 0 r11 0xffffffff81076000 _bus_dmamap_unload r12 0xffff800000074340 r13 0x66 r14 0x1 r15 0 rip 0xffffffff81317f38 _bpf_mtap+0x68 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800014a1c2e0 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> show proc PROC (syz-executor1) pid=192102 stat=onproc flags process=0 proc=0 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800014a332d0,0xffff8000ffffd080 process=0xffff800014a15010 user=0xffff800014a17000, vmspace=0xffffff003f12bc60 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *23545 192102 1590 0 7 0 syz-executor1 23545 423359 1590 0 2 0x4000000 syz-executor1 27990 140856 1 0 3 0x100083 ttyin getty 43129 200147 0 0 3 0x14200 bored sosplice 21504 506787 89076 0 3 0x2 biowait syz-executor0 1590 50214 89076 0 2 0x2 syz-executor1 89076 473415 28557 0 3 0x82 thrsleep syz-fuzzer 89076 33599 28557 0 3 0x4000082 nanosleep syz-fuzzer 89076 58566 28557 0 3 0x4000082 thrsleep syz-fuzzer 89076 456245 28557 0 3 0x4000082 kqread syz-fuzzer 89076 350176 28557 0 3 0x4000082 thrsleep syz-fuzzer 89076 310947 28557 0 3 0x4000082 thrsleep syz-fuzzer 89076 254863 28557 0 3 0x4000082 thrsleep syz-fuzzer 28557 82298 2383 0 3 0x10008a pause ksh 2383 252624 90012 0 3 0x92 select sshd 90012 512520 1 0 3 0x80 select sshd 5078 17644 57048 73 2 0x100090 syslogd 57048 187458 1 0 3 0x100082 netio syslogd 2554 57566 1 77 3 0x100090 poll dhclient 59197 108439 1 0 3 0x80 poll dhclient 59187 306825 0 0 2 0x14200 zerothread 81302 164970 0 0 3 0x14200 aiodoned aiodoned 16807 68406 0 0 3 0x14200 syncer update 9001 179605 0 0 3 0x14200 cleaner cleaner 22779 72581 0 0 3 0x14200 reaper reaper 2660 55350 0 0 3 0x14200 pgdaemon pagedaemon 96894 179767 0 0 3 0x14200 bored crynlk 72106 391723 0 0 3 0x14200 bored crypto 58392 502611 0 0 3 0x40014200 acpi0 acpi0 63637 337897 0 0 3 0x14200 bored softnet 23707 242414 0 0 3 0x14200 bored systqmp 27873 87094 0 0 3 0x14200 bored systq 4377 475891 0 0 3 0x40014200 bored softclock 87876 174896 0 0 3 0x40014200 idle0 1 253384 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper