uvm_fault(0xffffff007f12b108, 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(0xffffff007f12b108, 0x6000118, 0, 1) -> e _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff007f146800) at _bpf_mtap+0x68 end trace frame: 0xffff80002114a560, count: 0 ddb> trace _bpf_mtap(ffff800000074340,1,ffff800000074340,ffffff007f146800) at _bpf_mtap+0x68 bpf_mtap_ether(ffff80002114a608,42,ffff800000074340) at bpf_mtap_ether+0xeb ifiq_input(ffff800000171050,ffff800000171290,ffffff007f146800) 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(0,0,21,0,ffff800000026518,ffff800000026518) at Xintr_ioapic_edge19_untramp+0x19f __mtx_enter(ffff800000026518) at __mtx_enter+0x19 bufq_peek(ffffff0062a8c970) at bufq_peek+0x1c sdstart(ffff800000020d40) at sdstart+0x31b scsi_iopool_run(1) at scsi_iopool_run+0xff scsi_xsh_runqueue(1) at scsi_xsh_runqueue+0x186 scsi_xsh_add(ffffff005f725c00) at scsi_xsh_add+0x94 sdstrategy(ffff80002114a998) at sdstrategy+0x123 spec_strategy(ffff80002114a998) at spec_strategy+0x69 ufs_strategy(0) at ufs_strategy+0xe5 VOP_STRATEGY(ffffff005f725c00) at VOP_STRATEGY+0x6b bwrite(ffffff0069da0238) at bwrite+0x195 ufs_dirremove(ffffff0069da0238,ffffff000600eb90,ffffff00653a31f0,ffffff0077935790) at ufs_dirremove+0x22b ufs_rmdir(ffffff0069da0238) at ufs_rmdir+0x17b VOP_RMDIR(0,ffffff000600eb90,8) at VOP_RMDIR+0x6a dounlinkat(ffff80002114acb0,ffff8000ffffcbc0,ffff8000210a6300,890) at dounlinkat+0xf5 syscall(0) at syscall+0x3e4 Xsyscall(6,89,7f7ffffd3a10,89,556289b8fc0,7f7ffffd3e60) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3e50, count: -25 ddb> show registers rdi 0xffff800000074340 rsi 0xffffff007f146800 rbp 0xffff80002114a4d0 rbx 0x6000100 __kernel_end_phys+0x4000100 rdx 0x1 rcx 0 rax 0x42 r8 0x2 r9 0 r10 0 r11 0xffffffff810b8400 _bus_dmamap_unload r12 0xffff800000074340 r13 0x42 r14 0x1 r15 0 rip 0xffffffff81397ad8 _bpf_mtap+0x68 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002114a460 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb> show proc PROC (syz-executor0) pid=480005 stat=onproc flags process=2 proc=0 pri=66, usrpri=66, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffce18,0xffffffff81eafaa0 process=0xffff8000210a6300 user=0xffff800021145000, vmspace=0xffffff007f12b108 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND * 8175 480005 20689 0 7 0x2 syz-executor0 6962 330870 1 0 3 0x100083 ttyin getty 29 133003 0 0 3 0x14200 bored sosplice 49532 292742 20689 0 3 0x2 biowait syz-executor1 20689 415535 32984 0 3 0x82 thrsleep syz-fuzzer 20689 287254 32984 0 3 0x4000082 nanosleep syz-fuzzer 20689 350181 32984 0 3 0x4000082 thrsleep syz-fuzzer 20689 188382 32984 0 3 0x4000082 thrsleep syz-fuzzer 20689 409190 32984 0 3 0x4000082 kqread syz-fuzzer 20689 25798 32984 0 3 0x4000082 thrsleep syz-fuzzer 20689 449254 32984 0 3 0x4000082 thrsleep syz-fuzzer 32984 465211 87909 0 3 0x10008a pause ksh 87909 499824 50754 0 3 0x92 select sshd 50754 249071 1 0 3 0x80 select sshd 96557 137576 50274 73 2 0x100090 syslogd 50274 390658 1 0 3 0x100082 netio syslogd 2169 489939 1 77 3 0x100090 poll dhclient 71219 368562 1 0 3 0x80 poll dhclient 32297 447764 0 0 3 0x14200 pgzero zerothread 47310 294914 0 0 3 0x14200 aiodoned aiodoned 94904 335169 0 0 3 0x14200 syncer update 84137 52122 0 0 3 0x14200 cleaner cleaner 17512 419279 0 0 3 0x14200 reaper reaper 96218 170772 0 0 3 0x14200 pgdaemon pagedaemon 36786 219871 0 0 3 0x14200 bored crynlk 1344 291754 0 0 3 0x14200 bored crypto 70689 447487 0 0 3 0x40014200 acpi0 acpi0 38199 23698 0 0 3 0x14200 bored softnet 94129 270882 0 0 3 0x14200 bored systqmp 72473 220709 0 0 3 0x14200 bored systq 47463 372576 0 0 3 0x40014200 bored softclock 29620 74811 0 0 3 0x40014200 idle0 1 416672 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper