uvm_fault(0xffffffff8252b6a0, 0xfffffd0000000018, 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(0xffffffff8252b6a0, 0xfffffd0000000018, 0, 1) -> e bpf_mtap(ffff800000a69080,fffffd802b703300,2) at bpf_mtap+0x58 sys/net/bpf.c:1277 end trace frame: 0xffff80001796e4f0, count: 0 ddb> trace bpf_mtap(ffff800000a69080,fffffd802b703300,2) at bpf_mtap+0x58 sys/net/bpf.c:1277 tun_dev_read(ffff800000a98000,ffff80001796e768,10) at tun_dev_read+0x274 sys/net/if_tun.c:784 spec_read(ffff80001796e5b0) at spec_read+0xe9 sys/kern/spec_vnops.c:222 VOP_READ(fffffd80375d59c0,ffff80001796e768,10,fffffd803f7c69c0) at VOP_READ+0xbf sys/kern/vfs_vops.c:248 vn_read(fffffd802d764a60,ffff80001796e768,0) at vn_read+0x11f sys/kern/vfs_vnops.c:378 dofilereadv(ffff8000ffff2290,f0,ffff80001796e768,0,ffff80001796e850) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff2290,ffff80001796e800,ffff80001796e850) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001796e8d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,3,3,3,3,810de7c6a00) at Xsyscall+0x128 end of kernel end trace frame: 0x810e2a49000, count: -9 ddb> show registers rdi 0xffffffff813be685 bpf_mtap+0x55 rsi 0x52 rbp 0xffff80001796e470 rbx 0xfffffd0000000000 rdx 0x53 rcx 0xffff800017b84000 rax 0x3e r8 0xffff80001796e850 r9 0x5 r10 0xd0e3234060621388 r11 0x9caf912ef8433462 r12 0x3e r13 0x2 r14 0xfffffd802b703300 r15 0xffff800000a69080 rip 0xffffffff813be688 bpf_mtap+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001796e3f0 ss 0x10 bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb> show proc PROC (syz-executor.0) pid=490078 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2508,0xffffffff825944e8 process=0xffff8000ffff6d90 user=0xffff800017969000, vmspace=0xfffffd803f013bb0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37748 331086 11793 0 2 0 syz-executor.0 *37748 490078 11793 0 7 0x4000000 syz-executor.0 63596 20148 73568 0 2 0x2 syz-executor.1 6444 363005 0 0 3 0x14200 acct acct 11793 296890 73568 0 3 0x82 nanosleep syz-executor.0 85927 356560 0 0 3 0x14200 bored sosplice 73568 55496 19972 0 3 0x82 thrsleep syz-fuzzer 73568 277125 19972 0 3 0x4000082 nanosleep syz-fuzzer 73568 319835 19972 0 3 0x4000082 kqread syz-fuzzer 73568 150243 19972 0 3 0x4000082 thrsleep syz-fuzzer 73568 344580 19972 0 3 0x4000082 thrsleep syz-fuzzer 73568 309929 19972 0 3 0x4000082 thrsleep syz-fuzzer 73568 308992 19972 0 3 0x4000082 thrsleep syz-fuzzer 73568 469529 19972 0 3 0x4000082 thrsleep syz-fuzzer 19972 491738 51935 0 3 0x10008a pause ksh 51935 396642 65768 0 3 0x92 select sshd 9886 187051 1 0 3 0x100083 ttyin getty 65768 190858 1 0 3 0x80 select sshd 41202 295774 39354 73 3 0x100090 kqread syslogd 39354 139130 1 0 3 0x100082 netio syslogd 70558 83230 0 0 2 0x14200 zerothread 42728 513473 0 0 3 0x14200 aiodoned aiodoned 74200 339923 0 0 3 0x14200 syncer update 82812 97589 0 0 3 0x14200 cleaner cleaner 74413 392220 0 0 3 0x14200 reaper reaper 42105 263048 0 0 3 0x14200 pgdaemon pagedaemon 5302 75352 0 0 3 0x14200 bored crynlk 49460 370276 0 0 3 0x14200 bored crypto 80633 336104 0 0 3 0x40014200 acpi0 acpi0 30407 250058 0 0 3 0x14200 bored softnet 45039 449458 0 0 3 0x14200 bored systqmp 74312 519441 0 0 3 0x14200 bored systq 85466 495061 0 0 3 0x40014200 bored softclock 66502 224512 0 0 3 0x40014200 idle0 41014 390873 0 0 3 0x14200 bored smr 1 328690 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 Kern Lim devbuf 9597 6325K 7356K 78643K 21071 0 0 pcb 13 12K 14K 78643K 1108 0 0 rtable 111 5K 6K 78643K 1461 0 0 ifaddr 99 22K 23K 78643K 859 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 260 0 0 iov 0 0K 32K 78643K 2000 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1219 77K 77K 78643K 5106 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 58 0 0 VM map 36 9K 9K 78643K 48 0 0 sem 12 0K 1K 78643K 1323 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 4192 0 0 sigio 0 0K 0K 78643K 134 0 0 proc 44 30K 63K 78643K 1517 0 0 subproc 32 2K 2K 78643K 357 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 426 0 0 in_multi 27 1K 2K 78643K 469 0 0 ether_multi 1 0K 0K 78643K 40 0 0 mrt 1 0K 0K 78643K 33 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 114 503K 503K 78643K 114 0 0 exec 0 0K 1K 78643K 868 0 0 pfkey data 0 0K 4K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 161 283K 283K 78643K 11317 0 0 UVM aobj 130 4K 4K 78643K 137 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 1076 0 0 NDP 22 0K 0K 78643K 272 0 0 temp 243 3545K 3625K 78643K 127092 0 0 kqueue 0 0K 0K 78643K 53 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 84 0 79 1 0 1 1 0 8 0 rtpcb 80 397 0 397 8 7 1 1 0 8 1 rtentry 112 502 0 461 2 0 2 2 0 8 0 unpcb 120 6587 0 6576 4 3 1 2 0 8 0 syncache 264 17 0 17 9 9 0 1 0 8 0 tcpqe 32 70 0 70 3 3 0 1 0 8 0 tcpcb 544 1726 0 1717 17 16 1 15 0 8 0 ipq 40 28 0 28 13 12 1 1 0 8 1 ipqe 40 748 0 748 13 12 1 1 0 8 1 inpcb 280 5494 0 5483 31 29 2 13 0 8 1 rttmr 72 14 0 13 2 1 1 1 0 8 0 ip6q 72 2 0 2 2 1 1 1 0 8 1 ip6af 40 1 0 1 1 1 0 1 0 8 0 nd6 48 54 0 53 3 2 1 1 0 8 0 pkpcb 40 22 0 22 7 6 1 1 0 8 1 swfcl 56 3 0 0 1 0 1 1 0 8 0 ppxss 1128 114 0 114 15 14 1 1 0 8 1 art_heap8 4096 15 0 13 9 7 2 4 0 8 0 art_heap4 256 1917 0 1715 31 14 17 19 0 8 0 art_table 32 1932 0 1728 4 1 3 3 0 8 0 art_node 16 501 0 464 1 0 1 1 0 8 0 semapl 112 1319 0 1309 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 8140 0 6731 46 0 46 46 0 8 0 ffsino 240 8140 0 6731 84 0 84 84 0 8 0 nchpl 144 15336 0 14873 60 40 20 60 0 8 0 uvmvnodes 72 8028 0 0 146 0 146 146 0 8 0 vnodes 208 8028 0 0 423 0 423 423 0 8 0 namei 1024 54124 0 54124 4 3 1 1 0 8 1 vcpupl 1984 34 0 0 5 0 5 5 0 8 0 vmpool 520 46 0 12 3 0 3 3 0 8 0 scsiplug 64 10 0 10 6 5 1 1 0 8 1 scxspl 192 52411 0 52411 24 23 1 7 0 8 1 plimitpl 152 404 0 398 1 0 1 1 0 8 0 sigapl 432 4305 0 4294 2 0 2 2 0 8 0 futexpl 56 144983 0 144983 4 3 1 1 0 8 1 knotepl 112 929 0 910 3 2 1 2 0 8 0 kqueuepl 104 1312 0 1308 4 3 1 4 0 8 0 pipepl 112 8890 0 8871 17 15 2 2 0 8 1 fdescpl 424 4306 0 4294 2 0 2 2 0 8 0 filepl 120 46304 0 46202 30 25 5 10 0 8 0 lockfpl 104 1689 0 1689 4 3 1 1 0 8 1 lockfspl 48 547 0 547 4 3 1 1 0 8 1 sessionpl 112 36 0 28 1 0 1 1 0 8 0 pgrppl 48 118 0 110 1 0 1 1 0 8 0 ucredpl 96 4629 0 4621 1 0 1 1 0 8 0 zombiepl 144 4295 0 4295 1 0 1 1 0 8 1 processpl 864 4323 0 4295 4 0 4 4 0 8 0 procpl 632 9489 0 9453 4 0 4 4 0 8 0 sosppl 128 63 0 63 15 15 0 1 0 8 0 sockpl 384 12568 0 12546 51 47 4 21 0 8 1 mcl64k 65536 461 0 461 6 5 1 2 0 8 1 mcl16k 16384 66 0 66 15 14 1 1 0 8 1 mcl12k 12288 147 0 147 8 7 1 1 0 8 1 mcl9k 9216 77 0 77 15 14 1 1 0 8 1 mcl8k 8192 257 0 257 6 5 1 1 0 8 1 mcl4k 4096 527 0 527 5 4 1 1 0 8 1 mcl2k2 2112 44 0 44 17 16 1 1 0 8 1 mcl2k 2048 76536 0 76492 18 11 7 14 0 8 0 mtagpl 80 242 0 229 2 1 1 1 0 8 0 mbufpl 256 152730 0 152618 169 156 13 52 0 8 3 bufpl 256 24001 0 15635 523 0 523 523 0 8 0 anonpl 16 573098 0 552405 231 131 100 108 0 62 9 amapchunkpl 152 23433 0 23286 98 82 16 20 0 158 9 amappl16 192 28143 0 26913 241 167 74 75 0 8 10 amappl15 184 343 0 343 2 2 0 1 0 8 0 amappl14 176 1009 0 1004 1 0 1 1 0 8 0 amappl13 168 305 0 304 1 0 1 1 0 8 0 amappl12 160 573 0 569 2 1 1 1 0 8 0 amappl11 152 901 0 896 1 0 1 1 0 8 0 amappl10 144 36 0 34 1 0 1 1 0 8 0 amappl9 136 1964 0 1959 1 0 1 1 0 8 0 amappl8 128 1577 0 1526 2 0 2 2 0 8 0 amappl7 120 133 0 126 1 0 1 1 0 8 0 amappl6 112 849 0 836 1 0 1 1 0 8 0 amappl5 104 919 0 912 1 0 1 1 0 8 0 amappl4 96 4752 0 4722 1 0 1 1 0 8 0 amappl3 88 1121 0 1115 1 0 1 1 0 8 0 amappl2 80 33130 0 33069 3 1 2 3 0 8 0 amappl1 72 86408 0 86034 27 18 9 20 0 8 0 amappl 80 10083 0 10027 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 136 0 7 3 0 3 3 0 8 0 uaddrrnd 24 4352 0 4294 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4352 0 4294 1 0 1 1 0 8 0 vmmpekpl 168 41651 0 41616 2 0 2 2 0 8 0 vmmpepl 168 530981 0 528660 365 236 129 148 0 357 19 vmsppl 272 4305 0 4294 2 1 1 2 0 8 0 pdppl 4096 8710 0 8646 10 1 9 9 0 8 0 pvpl 32 1462847 0 1440160 485 230 255 328 0 265 55 pmappl 200 4351 0 4306 3 0 3 3 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 904 0 239 19 0 19 19 0 8 0