uvm_fault(0xfffffd803f00cd68, 0xa00000030, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0xb3: movq %r13,0x20(%rbx) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f00cd68, 0xa00000030, 0, 2) -> e pfi_ifhead_RB_REMOVE(ffffffff8229fb50,ffff8000009b1d00) at pfi_ifhead_RB_REMOVE+0xb3 sys/net/pf_if.c:80 end trace frame: 0xffff800016bfa5a0, count: 0 ddb> trace pfi_ifhead_RB_REMOVE(ffffffff8229fb50,ffff8000009b1d00) at pfi_ifhead_RB_REMOVE+0xb3 sys/net/pf_if.c:80 pfi_detach_ifnet(ffff8000009a7000) at pfi_detach_ifnet+0x11e pfi_kif_unref sys/net/pf_if.c:199 [inline] pfi_detach_ifnet(ffff8000009a7000) at pfi_detach_ifnet+0x11e sys/net/pf_if.c:257 if_detach(ffff8000009a7000) at if_detach+0x15d sys/net/if.c:1118 tun_clone_destroy(ffff8000009a7000) at tun_clone_destroy+0x1c6 sys/net/if_tun.c:278 spec_close(ffff800016bfa6d8) at spec_close+0x3b0 sys/kern/spec_vnops.c:553 VOP_CLOSE(fffffd8030354098,2,fffffd803f7c6ae0,ffff8000ffff9520) at VOP_CLOSE+0x64 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80303743d0,ffff8000ffff9520) at vn_closefile+0x14b vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(fffffd80303743d0,ffff8000ffff9520) at vn_closefile+0x14b sys/kern/vfs_vnops.c:575 fdrop(fffffd80303743d0,ffff8000ffff9520) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd80303743d0,ffff8000ffff9520) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff8000ffff9520) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff8000ffff9520,0,1) at exit1+0x329 sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff9520,ffff800016bfa980,ffff800016bfa9f0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016bfaa60) at syscall+0x511 Xsyscall(6,1,0,1,0,7f7fffffaaf4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaac0, count: -14 ddb> show registers rdi 0xffffffff8229fb50 pfi_ifs rsi 0xffff8000009b1d00 rbp 0xffff800016bfa560 rbx 0xa00000010 rdx 0 rcx 0xfffffd8036db1400 rax 0 r8 0x101010101010101 r9 0x5 r10 0x54e60541d5f522db r11 0x154079d29092ac38 r12 0xffffffff8229fb50 pfi_ifs r13 0 r14 0xffff8000009b1d00 r15 0 rip 0xffffffff81700033 pfi_ifhead_RB_REMOVE+0xb3 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016bfa500 ss 0x10 pfi_ifhead_RB_REMOVE+0xb3: movq %r13,0x20(%rbx) ddb> show proc PROC (syz-executor.0) pid=69323 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=71, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9070,0xffffffff822b6920 process=0xffff8000ffff6d30 user=0xffff800016bf5000, vmspace=0xfffffd803f00cd68 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 9144 460636 84818 0 3 0x82 nanosleep syz-executor.0 96343 169449 84818 0 3 0x2 biowait syz-executor.1 84818 7601 12452 0 3 0x82 kqread syz-fuzzer 84818 190486 12452 0 3 0x4000082 nanosleep syz-fuzzer 84818 442338 12452 0 3 0x4000082 thrsleep syz-fuzzer 84818 249990 12452 0 3 0x4000082 thrsleep syz-fuzzer 84818 222978 12452 0 3 0x4000082 thrsleep syz-fuzzer 84818 202613 12452 0 3 0x4000082 thrsleep syz-fuzzer 84818 300056 12452 0 3 0x4000082 thrsleep syz-fuzzer 12452 202761 44404 0 3 0x10008a pause ksh 44404 333742 33314 0 3 0x92 select sshd 22519 10769 1 0 3 0x100083 ttyin getty 33314 518349 1 0 3 0x80 select sshd 13853 178581 3914 73 2 0x100090 syslogd 3914 201081 1 0 3 0x100082 netio syslogd 42651 216989 1 77 3 0x100090 poll dhclient 58163 328420 1 0 3 0x80 poll dhclient 61439 484992 0 0 2 0x14200 zerothread 90687 241681 0 0 3 0x14200 aiodoned aiodoned 56230 103486 0 0 3 0x14200 syncer update 33863 126800 0 0 3 0x14200 cleaner cleaner 17071 45239 0 0 3 0x14200 reaper reaper 2832 496990 0 0 3 0x14200 pgdaemon pagedaemon 57524 524189 0 0 3 0x14200 bored crynlk 97745 501013 0 0 3 0x14200 bored crypto 52522 21482 0 0 3 0x40014200 acpi0 acpi0 46664 282128 0 0 2 0x14200 softnet 84192 514643 0 0 3 0x14200 bored systqmp 2913 453241 0 0 3 0x14200 bored systq 67536 264132 0 0 3 0x40014200 bored softclock 64928 9263 0 0 3 0x40014200 idle0 56256 194625 0 0 3 0x14200 bored smr 1 222525 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 9459 6317K 6697K 78643K 10723 0 0 pcb 23 9K 9K 78643K 97 0 0 rtable 108 3K 4K 78643K 240 0 0 ifaddr 42 11K 11K 78643K 66 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 19 0 0 iov 0 0K 16K 78643K 20 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1207 76K 76K 78643K 1308 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 3 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 6 0K 0K 78643K 8 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 5 13K 25K 78643K 152 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 42 30K 54K 78643K 300 0 0 subproc 32 2K 2K 78643K 34 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 6 0 0 in_multi 33 2K 2K 78643K 36 0 0 ether_multi 1 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 42 185K 185K 78643K 42 0 0 exec 0 0K 1K 78643K 190 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 82 20K 21K 78643K 1177 0 0 UVM aobj 6 2K 2K 78643K 6 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 8 0 0 NDP 7 0K 0K 78643K 17 0 0 temp 100 2702K 2766K 78643K 3405 0 0 kqueue 0 0K 0K 78643K 1 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 6 0 0 1 0 1 1 0 8 0 inpcbpl 280 78 0 71 1 0 1 1 0 8 0 plimitpl 152 18 0 11 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 22 0 18 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 ppxss 1128 6 0 6 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semapl 112 6 0 2 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1657 0 244 46 0 46 46 0 8 0 ffsino 240 1657 0 244 84 0 84 84 0 8 0 nchpl 144 2063 0 431 61 0 61 61 0 8 0 uvmvnodes 72 1739 0 0 32 0 32 32 0 8 0 vnodes 200 1739 0 0 92 0 92 92 0 8 0 namei 1024 5294 0 5294 2 1 1 1 0 8 1 scxspl 192 5240 0 5239 8 7 1 6 0 8 0 sigapl 432 323 0 310 2 0 2 2 0 8 0 futexpl 56 1896 0 1896 1 0 1 1 0 8 1 knotepl 112 74 0 55 1 0 1 1 0 8 0 kqueuepl 104 34 0 32 1 0 1 1 0 8 0 pipepl 112 184 0 165 2 1 1 1 0 8 0 fdescpl 424 324 0 310 2 0 2 2 0 8 0 filepl 120 1708 0 1613 4 0 4 4 0 8 1 lockfpl 104 52 0 52 2 1 1 1 0 8 1 lockfspl 48 21 0 21 2 1 1 1 0 8 1 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 96 252 0 245 1 0 1 1 0 8 0 zombiepl 144 311 0 310 2 1 1 1 0 8 0 processpl 840 338 0 310 4 0 4 4 0 8 0 procpl 600 500 0 466 4 0 4 4 0 8 1 sockpl 384 152 0 135 3 0 3 3 0 8 1 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 3 0 3 1 0 1 1 0 8 1 mcl4k 4096 11 0 11 1 0 1 1 0 8 1 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 51185 0 51142 13 5 8 11 0 8 2 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 83926 0 83847 12 3 9 9 0 8 2 bufpl 256 5860 0 1387 280 0 280 280 0 8 0 anonpl 16 36138 0 27785 37 2 35 35 0 62 0 amapchunkpl 152 1465 0 1362 7 1 6 7 0 158 0 amappl16 192 977 0 554 23 0 23 23 0 8 1 amappl15 184 57 0 55 1 0 1 1 0 8 0 amappl14 176 93 0 89 2 1 1 1 0 8 0 amappl13 168 8 0 7 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 55 0 41 1 0 1 1 0 8 0 amappl10 144 66 0 64 2 1 1 1 0 8 0 amappl9 136 612 0 607 1 0 1 1 0 8 0 amappl8 128 185 0 171 1 0 1 1 0 8 0 amappl7 120 32 0 28 1 0 1 1 0 8 0 amappl6 112 51 0 45 1 0 1 1 0 8 0 amappl5 104 129 0 119 1 0 1 1 0 8 0 amappl4 96 451 0 431 1 0 1 1 0 8 0 amappl3 88 177 0 167 1 0 1 1 0 8 0 amappl2 80 1862 0 1794 4 2 2 3 0 8 0 amappl1 72 14691 0 14285 25 14 11 19 0 8 1 amappl 80 737 0 700 1 0 1 1 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 dma64 64 259 0 259 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 324 0 310 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 324 0 310 1 0 1 1 0 8 0 vmmpekpl 168 6202 0 6175 2 0 2 2 0 8 0 vmmpepl 168 41454 0 40070 93 21 72 74 0 357 10 vmsppl 264 323 0 310 2 1 1 2 0 8 0 pdppl 4096 655 0 620 6 1 5 6 0 8 0 pvpl 32 133293 0 121944 107 8 99 102 0 265 6 pmappl 200 323 0 310 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 420 0 12 12 0 12 12 0 8 0