uvm_fault(0xffffffff82592678, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff82592678, 0xfffffd0000000018, 0, 1) -> e bpf_mtap(ffff800000a20e80,fffffd807e07c000,2) at bpf_mtap+0x58 sys/net/bpf.c:1273 end trace frame: 0xffff8000231971b0, count: 0 ddb{1}> trace bpf_mtap(ffff800000a20e80,fffffd807e07c000,2) at bpf_mtap+0x58 sys/net/bpf.c:1273 tun_dev_read(5d01,ffff800023197428,10) at tun_dev_read+0x10f spec_read(ffff800023197270) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2be278,ffff800023197428,10,fffffd807f7bf780) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80675f4b60,ffff800023197428,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020ec64f8,f0,ffff800023197428,0,ffff800023197510) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ec64f8,ffff8000231974c0,ffff800023197510) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023197590) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023197590) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdf595804db0, count: -9 ddb{1}> show registers rdi 0xffffffff81479b55 bpf_mtap+0x55 rsi 0x634 rbp 0xffff800023197140 rbx 0xfffffd0000000000 rdx 0x635 rcx 0xffff800023198000 rax 0xe r8 0xffffffff82210d0c pp_r600_decoded_lanes+0x4dc4 r9 0xffff8000009d5664 r10 0x14 r11 0x71634bdebd73a78c r12 0xe r13 0x2 r14 0xfffffd807e07c000 r15 0xffff800000a20e80 rip 0xffffffff81479b58 bpf_mtap+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000231970c0 ss 0x10 bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=140498 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec6018,0xffff800020ec7888 process=0xffff800020e92ba8 user=0xffff800023192000, vmspace=0xfffffd806e990178 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48944 263009 77075 0 7 0 syz-executor.0 48944 64540 77075 0 3 0x4000080 fsleep syz-executor.0 17296 177018 84801 0 2 0 syz-executor.1 *17296 140498 84801 0 7 0x4000000 syz-executor.1 85667 403792 0 0 3 0x14200 bored sosplice 84801 408368 51820 0 2 0x2 syz-executor.1 77075 193452 51820 0 3 0x82 nanosleep syz-executor.0 51820 324698 72561 0 3 0x82 thrsleep syz-fuzzer 51820 398349 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 384117 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 328267 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 119461 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 310370 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 500578 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 41657 72561 0 3 0x4000082 thrsleep syz-fuzzer 51820 266374 72561 0 3 0x4000082 kqread syz-fuzzer 51820 457601 72561 0 3 0x4000082 thrsleep syz-fuzzer 72561 263374 61901 0 3 0x10008a pause ksh 61901 215928 16910 0 3 0x92 select sshd 60954 187138 1 0 3 0x100083 ttyin getty 16910 232073 1 0 3 0x80 select sshd 68946 297562 52254 74 3 0x100092 bpf pflogd 52254 27836 1 0 3 0x80 netio pflogd 32241 399574 60001 73 3 0x100090 kqread syslogd 60001 12197 1 0 3 0x100082 netio syslogd 53589 16308 1 77 3 0x100090 poll dhclient 45723 126963 1 0 3 0x80 poll dhclient 94595 330771 0 0 3 0x14200 bored smr 57738 241392 0 0 2 0x14200 zerothread 10290 486272 0 0 3 0x14200 aiodoned aiodoned 86574 408410 0 0 3 0x14200 syncer update 38151 66825 0 0 3 0x14200 cleaner cleaner 82777 352035 0 0 3 0x14200 reaper reaper 46500 304414 0 0 3 0x14200 pgdaemon pagedaemon 26726 301696 0 0 3 0x14200 bored crynlk 69642 315690 0 0 3 0x14200 bored crypto 481 63918 0 0 3 0x40014200 acpi0 acpi0 15331 118051 0 0 3 0x40014200 idle1 6759 432554 0 0 3 0x14200 bored softnet 33355 390547 0 0 3 0x14200 bored systqmp 70197 463499 0 0 3 0x14200 bored systq 77850 503559 0 0 3 0x40014200 bored softclock 58600 393075 0 0 3 0x40014200 idle0 1 389497 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 17296 (syz-executor.1) thread 0xffff800020ec64f8 (140498) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff826670d0) #0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164 #1 vn_read+0x45 sys/kern/vfs_vnops.c:357 #2 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #3 sys_read+0x83 sys/kern/sys_generic.c:157 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9617 7293K 7802K 78643K 14944 0 pcb 13 8K 8K 78643K 164 0 rtable 115 12K 12K 78643K 795 0 ifaddr 120 23K 23K 78643K 244 0 counters 43 33K 34K 78643K 81 0 ioctlops 0 0K 4K 78643K 1532 0 iov 0 0K 16K 78643K 124 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 2253 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 207 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 968 0 sigio 0 0K 0K 78643K 44 0 proc 62 63K 95K 78643K 515 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 89 0 in_multi 128 5K 5K 78643K 211 0 ether_multi 1 0K 0K 78643K 27 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 273 0 pfkey data 0 0K 0K 78643K 1 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 110 54K 54K 78643K 4010 0 UVM aobj 40 2K 2K 78643K 42 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 128 0 NDP 17 0K 0K 78643K 40 0 temp 128 3045K 3110K 78643K 10913 0 kqueue 3 4K 23K 78643K 76 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 10 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 548 0 546 1 0 1 1 0 8 0 rtentry 112 58 0 12 2 0 2 2 0 8 0 unpcb 120 535 0 524 1 0 1 1 0 8 0 syncache 264 8 0 8 4 3 1 1 0 8 1 tcpqe 32 643 0 643 1 1 0 1 0 8 0 tcpcb 544 317 0 313 1 0 1 1 0 8 0 inpcb 280 1274 0 1265 4 2 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 8 0 1 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 2 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 4 0 4 3 2 1 1 0 8 1 pffrag 232 5 0 5 2 1 1 1 0 482 1 pffrnode 88 5 0 5 2 1 1 1 0 8 1 pffrent 40 182 0 182 2 1 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 62 0 19 1 0 1 1 0 8 0 pfstkey 112 62 0 19 2 0 2 2 0 8 0 pfstate 328 62 0 18 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 225 0 19 14 0 14 14 0 8 1 art_table 32 227 0 19 2 0 2 2 0 8 0 art_node 16 57 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 205 0 195 1 0 1 1 0 8 0 shmpl 112 40 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2746 0 1344 46 0 46 46 0 8 0 ffsino 272 2746 0 1344 95 1 94 95 0 8 0 nchpl 144 4258 0 2642 61 0 61 61 0 8 0 uvmvnodes 72 3693 0 0 68 0 68 68 0 8 0 vnodes 208 3693 0 0 195 0 195 195 0 8 0 namei 1024 11984 0 11984 1 0 1 1 0 8 1 percpumem 16 51 0 19 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 15 0 9 1 0 1 1 0 8 0 scsiplug 64 3 0 3 1 1 0 1 0 8 0 scxspl 192 13330 0 13330 12 9 3 7 0 8 3 plimitpl 152 70 0 62 1 0 1 1 0 8 0 sigapl 424 1185 0 1152 4 0 4 4 0 8 0 futexpl 56 14728 0 14727 1 0 1 1 0 8 0 knotepl 112 205 0 186 2 1 1 2 0 8 0 kqueuepl 144 176 0 172 1 0 1 1 0 8 0 pipelkpl 48 234 0 224 1 0 1 1 0 8 0 pipepl 120 468 0 449 1 0 1 1 0 8 0 fdescpl 496 1168 0 1151 3 0 3 3 0 8 0 filepl 152 7310 0 7207 5 0 5 5 0 8 1 lockfpl 104 220 0 219 1 0 1 1 0 8 0 lockfspl 48 71 0 70 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 563 0 554 1 0 1 1 0 8 0 zombiepl 144 1152 0 1152 1 0 1 1 0 8 1 processpl 984 1185 0 1152 5 0 5 5 0 8 0 procpl 624 3204 0 3160 4 0 4 4 0 8 0 sosppl 128 6 0 6 2 1 1 1 0 8 1 sockpl 400 2378 0 2356 6 2 4 4 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 250 0 0 31 0 31 31 0 8 0 mtagpl 80 76 0 0 2 0 2 2 0 8 0 mbufpl 256 598 0 0 35 0 35 35 0 8 0 bufpl 280 5983 0 181 415 0 415 415 0 8 0 anonpl 16 130030 0 115923 97 18 79 90 0 124 18 amapchunkpl 152 6501 0 6368 12 4 8 11 0 158 0 amappl16 192 7057 0 6270 76 35 41 64 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 4 0 3 2 1 1 1 0 8 0 amappl13 168 467 0 464 1 0 1 1 0 8 0 amappl12 160 12 0 9 1 0 1 1 0 8 0 amappl11 152 73 0 53 1 0 1 1 0 8 0 amappl10 144 28 0 22 1 0 1 1 0 8 0 amappl9 136 392 0 388 1 0 1 1 0 8 0 amappl8 128 306 0 291 1 0 1 1 0 8 0 amappl7 120 128 0 115 1 0 1 1 0 8 0 amappl6 112 26 0 21 1 0 1 1 0 8 0 amappl5 104 1070 0 1053 1 0 1 1 0 8 0 amappl4 96 956 0 921 2 1 1 2 0 8 0 amappl3 88 148 0 141 1 0 1 1 0 8 0 amappl2 80 8454 0 8379 3 1 2 3 0 8 0 amappl1 72 34425 0 33961 25 15 10 20 0 8 0 amappl 80 3476 0 3429 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 41 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1183 0 1160 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1183 0 1160 1 0 1 1 0 8 0 vmmpekpl 168 12031 0 11997 2 0 2 2 0 8 0 vmmpepl 168 147866 0 145821 137 27 110 121 0 357 21 vmsppl 368 1182 0 1160 3 0 3 3 0 8 1 pdppl 4096 2374 0 2326 7 0 7 7 0 8 1 pvpl 32 355820 0 338465 221 19 202 213 0 265 58 pmappl 232 1182 0 1160 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 213 0 6 6 0 6 6 0 8 0