uvm_fault(0xfffffd8060a4abb8, 0xc001f40758, 0, 1) -> e kernel: page fault trap, code=0 Stopped at bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd8060a4abb8, 0xc001f40758, 0, 1) -> e bpf_mtap(ffff8000009fadc0,fffffd80575f6300,2) at bpf_mtap+0x58 sys/net/bpf.c:1275 end trace frame: 0xffff80001e452190, count: 0 ddb> trace bpf_mtap(ffff8000009fadc0,fffffd80575f6300,2) at bpf_mtap+0x58 sys/net/bpf.c:1275 tun_dev_read(5d00,ffff80001e452408,10) at tun_dev_read+0x10f spec_read(ffff80001e452250) at spec_read+0xe9 sys/kern/spec_vnops.c:222 VOP_READ(fffffd805d779dd0,ffff80001e452408,10,fffffd806c3bec00) at VOP_READ+0xbf sys/kern/vfs_vops.c:248 vn_read(fffffd80566cfcb8,ffff80001e452408,0) at vn_read+0x11f sys/kern/vfs_vnops.c:375 dofilereadv(ffff80001d36d9d8,f0,ffff80001e452408,0,ffff80001e4524f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff80001d36d9d8,ffff80001e4524a0,ffff80001e4524f0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001e452570) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x89c5ed45430, count: -9 ddb> show registers rdi 0xffffffff81a12b15 bpf_mtap+0x55 rsi 0x56 rbp 0xffff80001e452120 rbx 0xc001f40740 rdx 0x57 rcx 0xffff80001f653000 rax 0x1fc1476 __kernel_base_phys+0xfc131e r8 0xffffffff821cd753 pp_r600_decoded_lanes+0x9d96 r9 0xffff800000a02604 r10 0xb333c244cff6ec3b r11 0x35d46cf70fce4ede r12 0x1fc1476 __kernel_base_phys+0xfc131e r13 0x2 r14 0xfffffd80575f6300 r15 0xffff8000009fadc0 rip 0xffffffff81a12b18 bpf_mtap+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e4520a0 ss 0x10 bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb> show proc PROC (syz-executor.0) pid=189465 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff80001d36dc48,0xffff80001d36e888 process=0xffff8000ffffa710 user=0xffff80001e44d000, vmspace=0xfffffd8060a4abb8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61076 58347 25826 0 2 0 syz-executor.0 *61076 189465 25826 0 7 0x4000000 syz-executor.0 61076 243882 25826 0 3 0x4000080 fsleep syz-executor.0 27642 188518 0 0 3 0x14200 bored sosplice 25826 372933 25994 0 3 0x82 nanosleep syz-executor.0 53055 420249 25994 0 2 0x2 syz-executor.1 25994 171586 62359 0 3 0x82 thrsleep syz-fuzzer 25994 151659 62359 0 3 0x4000082 nanosleep syz-fuzzer 25994 238708 62359 0 3 0x4000082 kqread syz-fuzzer 25994 278633 62359 0 3 0x4000082 thrsleep syz-fuzzer 25994 30491 62359 0 3 0x4000082 thrsleep syz-fuzzer 25994 374058 62359 0 3 0x4000082 thrsleep syz-fuzzer 25994 68197 62359 0 3 0x4000082 thrsleep syz-fuzzer 62359 65059 66415 0 3 0x10008a pause ksh 66415 35784 725 0 3 0x92 select sshd 41506 394101 1 0 3 0x100083 ttyin getty 725 516008 1 0 3 0x80 select sshd 26533 162068 84099 73 3 0x100090 kqread syslogd 84099 356118 1 0 3 0x100082 netio syslogd 70473 370700 1 77 3 0x100090 poll dhclient 2486 466286 1 0 3 0x80 poll dhclient 76121 468636 0 0 2 0x14200 zerothread 73432 204300 0 0 3 0x14200 aiodoned aiodoned 89206 308501 0 0 3 0x14200 syncer update 43549 310573 0 0 3 0x14200 cleaner cleaner 79725 78875 0 0 3 0x14200 reaper reaper 30828 60877 0 0 3 0x14200 pgdaemon pagedaemon 4467 76451 0 0 3 0x14200 bored crynlk 17193 89330 0 0 3 0x14200 bored crypto 2820 440109 0 0 3 0x40014200 acpi0 acpi0 9773 10113 0 0 3 0x14200 bored softnet 2630 290657 0 0 3 0x14200 bored systqmp 29222 455741 0 0 3 0x14200 bored systq 19477 406131 0 0 2 0x40014200 softclock 71951 323636 0 0 3 0x40014200 idle0 96462 209887 0 0 3 0x14200 bored smr 1 223103 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9499 6466K 6842K 78643K 11061 0 pcb 13 10K 12K 78643K 51 0 rtable 102 3K 3K 78643K 263 0 ifaddr 56 11K 12K 78643K 84 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 2K 78643K 37 0 iov 0 0K 16K 78643K 42 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1358 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 214 0 sigio 0 0K 0K 78643K 14 0 proc 50 38K 63K 78643K 376 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 25 0 in_multi 32 2K 2K 78643K 64 0 ether_multi 1 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 228 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 114 70K 70K 78643K 1370 0 UVM aobj 19 2K 2K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 27 0 NDP 10 0K 0K 78643K 19 0 temp 98 3009K 3074K 78643K 19478 0 kqueue 3 4K 8K 78643K 14 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 1 0 1 1 0 8 0 rtpcb 80 40 0 38 1 0 1 1 0 8 0 rtentry 112 54 0 13 2 0 2 2 0 8 0 unpcb 120 167 0 159 1 0 1 1 0 8 0 syncache 264 7 0 7 2 1 1 1 0 8 1 tcpqe 32 46 0 46 2 1 1 1 0 8 1 tcpcb 544 461 0 455 15 9 6 15 0 8 5 ipq 40 6 0 6 1 0 1 1 0 8 1 ipqe 40 186 0 186 1 0 1 1 0 8 1 inpcb 280 658 0 649 9 3 6 9 0 8 5 nd6 48 7 0 4 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 274 0 78 15 2 13 14 0 8 0 art_table 32 275 0 78 2 0 2 2 0 8 0 art_node 16 53 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 28 0 18 1 0 1 1 0 8 0 shmpl 112 21 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1704 0 303 46 0 46 46 0 8 0 ffsino 240 1704 0 303 83 0 83 83 0 8 0 nchpl 144 2206 0 593 60 0 60 60 0 8 0 uvmvnodes 72 1847 0 0 34 0 34 34 0 8 0 vnodes 208 1847 0 0 98 0 98 98 0 8 0 namei 1024 5905 0 5904 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 2 1 0 1 1 0 8 0 scxspl 192 6894 0 6894 1 0 1 1 0 8 1 plimitpl 152 43 0 36 1 0 1 1 0 8 0 sigapl 432 385 0 372 2 0 2 2 0 8 0 futexpl 56 5875 0 5874 1 0 1 1 0 8 0 knotepl 112 67 0 48 1 0 1 1 0 8 0 kqueuepl 104 272 0 270 4 3 1 4 0 8 0 pipelkpl 16 147 0 137 1 0 1 1 0 8 0 pipepl 120 294 0 275 2 0 2 2 0 8 1 fdescpl 432 386 0 372 2 0 2 2 0 8 0 filepl 120 3012 0 2911 11 3 8 11 0 8 4 lockfpl 104 88 0 87 1 0 1 1 0 8 0 lockfspl 48 31 0 30 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 310 0 303 1 0 1 1 0 8 0 zombiepl 144 372 0 372 1 0 1 1 0 8 1 processpl 896 401 0 372 4 0 4 4 0 8 0 procpl 624 651 0 614 4 0 4 4 0 8 0 sosppl 128 7 0 7 1 0 1 1 0 8 1 sockpl 400 871 0 852 14 7 7 14 0 8 4 mcl64k 65536 13 0 13 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 2 1 1 1 0 8 1 mcl12k 12288 8 0 8 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 30 0 30 2 1 1 1 0 8 1 mcl2k 2048 63168 0 63125 17 10 7 13 0 8 1 mtagpl 80 16 0 2 2 1 1 1 0 8 0 mbufpl 256 102666 0 102544 25 7 18 23 0 8 6 bufpl 280 4732 0 181 326 0 326 326 0 8 0 anonpl 16 49496 0 33663 69 1 68 68 0 107 3 amapchunkpl 152 1656 0 1517 8 2 6 8 0 158 0 amappl16 192 1702 0 834 47 0 47 47 0 8 3 amappl15 184 225 0 218 1 0 1 1 0 8 0 amappl14 176 25 0 23 1 0 1 1 0 8 0 amappl12 160 11 0 10 2 1 1 1 0 8 0 amappl11 152 53 0 41 1 0 1 1 0 8 0 amappl10 144 107 0 102 1 0 1 1 0 8 0 amappl9 136 564 0 561 1 0 1 1 0 8 0 amappl8 128 102 0 84 1 0 1 1 0 8 0 amappl7 120 184 0 172 1 0 1 1 0 8 0 amappl6 112 55 0 50 1 0 1 1 0 8 0 amappl5 104 138 0 128 1 0 1 1 0 8 0 amappl4 96 604 0 574 1 0 1 1 0 8 0 amappl3 88 123 0 116 1 0 1 1 0 8 0 amappl2 80 2397 0 2327 3 1 2 3 0 8 0 amappl1 72 16442 0 16027 26 16 10 20 0 8 0 amappl 80 889 0 842 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 22 0 4 1 0 1 1 0 8 0 uaddrrnd 24 392 0 374 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 392 0 374 1 0 1 1 0 8 0 vmmpekpl 168 6490 0 6460 2 0 2 2 0 8 0 vmmpepl 168 53679 0 51722 113 12 101 109 0 357 14 vmsppl 272 391 0 374 2 0 2 2 0 8 0 pdppl 4096 790 0 752 7 1 6 6 0 8 0 pvpl 32 165740 0 146919 168 0 168 168 0 265 16 pmappl 200 391 0 374 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 195 0 40 6 0 6 6 0 8 0