uvm_fault(0xfffffd803f013ee0, 0xa0a297d3080, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f013ee0, 0xa0a297d3080, 0, 1) -> e in6_purgeaddr(ffff800000acb900) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff8000159624f0, count: 0 ddb> trace in6_purgeaddr(ffff800000acb900) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000ad7000) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000ad7000) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000ad7000) at tun_clone_destroy+0x1c0 sys/net/if_tun.c:278 ifioctl(fffffd803d1bd4c0,80206979,ffff800015962900,ffff8000ffff2780) at ifioctl+0x3d4 sys/net/if.c:1877 fifo_ioctl(ffff800015962748) at fifo_ioctl+0x101 sys/miscfs/fifofs/fifo_vnops.c:282 VOP_IOCTL(fffffd802c78c5b0,80206979,ffff800015962900,82,fffffd803f7c6c00,ffff8000ffff2780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 vn_ioctl(fffffd802d7d35b0,80206979,ffff800015962900,ffff8000ffff2780) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:536 sys_ioctl(ffff8000ffff2780,ffff800015962a18,ffff800015962a60) at sys_ioctl+0x5b9 syscall(ffff800015962ae0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,e85c379f010) at Xsyscall+0x128 end of kernel end trace frame: 0xe87ddc80e80, count: -11 ddb> show registers rdi 0x1 rsi 0x3ffff acpi_pdirpa+0x2be67 rbp 0xffff800015962480 rbx 0 rdx 0x40000 acpi_pdirpa+0x2be68 rcx 0xffff800017924000 rax 0 r8 0xffff800000acbf00 r9 0x1 r10 0x532c2544f48f4137 r11 0x445898f458c6fce0 r12 0xa0a297d3078 r13 0 r14 0xffff800000acb900 r15 0xffff800000ad7000 rip 0xffffffff81007a65 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800015962410 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb> show proc PROC (syz-executor.0) pid=292388 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2018,0xffff8000ffff2518 process=0xffff8000148a2a38 user=0xffff80001595d000, vmspace=0xfffffd803f013ee0 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 48221 209715 52047 0 2 0 syz-executor.1 48221 504161 52047 0 3 0x4000080 fsleep syz-executor.1 47105 70228 57362 0 2 0 syz-executor.0 *47105 292388 57362 0 7 0x4000000 syz-executor.0 47105 130 57362 0 3 0x4000080 fsleep syz-executor.0 52047 6879 15107 0 3 0x82 nanosleep syz-executor.1 57362 345040 15107 0 3 0x82 nanosleep syz-executor.0 12129 19352 1 0 3 0x100083 ttyin getty 88776 69931 0 0 3 0x14200 bored sosplice 15107 217534 43287 0 3 0x82 thrsleep syz-fuzzer 15107 19902 43287 0 3 0x4000082 thrsleep syz-fuzzer 15107 410287 43287 0 3 0x4000082 thrsleep syz-fuzzer 15107 145120 43287 0 3 0x4000082 thrsleep syz-fuzzer 15107 331714 43287 0 3 0x4000082 kqread syz-fuzzer 15107 315379 43287 0 3 0x4000082 thrsleep syz-fuzzer 15107 266050 43287 0 3 0x4000082 thrsleep syz-fuzzer 15107 296577 43287 0 3 0x4000082 thrsleep syz-fuzzer 43287 77799 48146 0 3 0x10008a pause ksh 48146 46409 72180 0 3 0x92 select sshd 72180 307974 1 0 3 0x80 select sshd 67349 104624 19863 73 3 0x100090 kqread syslogd 19863 261202 1 0 3 0x100082 netio syslogd 83209 416295 1 77 2 0x100090 dhclient 35851 192278 1 0 3 0x80 poll dhclient 92452 176219 0 0 2 0x14200 zerothread 31314 170262 0 0 3 0x14200 aiodoned aiodoned 57280 287831 0 0 3 0x14200 syncer update 47343 41222 0 0 3 0x14200 cleaner cleaner 42826 88330 0 0 3 0x14200 reaper reaper 36359 299797 0 0 3 0x14200 pgdaemon pagedaemon 54484 251036 0 0 3 0x14200 bored crynlk 64108 430337 0 0 3 0x14200 bored crypto 32478 180785 0 0 3 0x40014200 acpi0 acpi0 93844 327637 0 0 3 0x14200 bored softnet 54278 136195 0 0 2 0x14200 systqmp 67399 368964 0 0 3 0x14200 bored systq 52885 312161 0 0 3 0x40014200 bored softclock 52082 412174 0 0 3 0x40014200 idle0 67035 21811 0 0 3 0x14200 bored smr 1 404809 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 9540 6364K 7527K 78643K 14395 0 0 pcb 13 9K 9K 78643K 526 0 0 rtable 86 11K 12K 78643K 928 0 0 ifaddr 68 14K 16K 78643K 258 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 1147 0 0 iov 0 0K 24K 78643K 410 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1223 77K 77K 78643K 2639 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 19 0 0 VM map 10 2K 2K 78643K 20 0 0 sem 12 0K 1K 78643K 353 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 1378 0 0 sigio 0 0K 0K 78643K 14 0 0 proc 50 38K 63K 78643K 704 0 0 subproc 32 2K 2K 78643K 119 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 107 0 0 in_multi 14 0K 2K 78643K 149 0 0 ether_multi 1 0K 0K 78643K 11 0 0 mrt 0 0K 0K 78643K 11 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 411 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 134 88K 88K 78643K 4313 0 0 UVM aobj 89 5K 5K 78643K 110 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 565 0 0 NDP 16 0K 0K 78643K 77 0 0 temp 202 3546K 4184K 78643K 40957 0 0 kqueue 0 0K 0K 78643K 12 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 27 0 23 1 0 1 1 0 8 0 rtpcb 80 191 0 189 1 0 1 1 0 8 0 rtentry 112 168 0 138 2 0 2 2 0 8 0 unpcb 120 760 0 746 1 0 1 1 0 8 0 syncache 264 13 0 11 6 5 1 1 0 8 0 tcpqe 32 91 0 91 2 2 0 1 0 8 0 tcpcb 544 1093 0 1082 4 3 1 3 0 8 0 ipq 40 10 0 10 5 4 1 1 0 8 1 ipqe 40 323 0 323 5 4 1 1 0 8 1 inpcb 280 2683 0 2669 8 6 2 4 0 8 1 rttmr 72 5 0 4 2 1 1 1 0 8 0 nd6 48 29 0 28 1 0 1 1 0 8 0 pkpcb 40 12 0 12 4 3 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 21 0 21 8 7 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 897 0 582 26 5 21 21 0 8 0 art_table 32 898 0 582 3 0 3 3 0 8 0 art_node 16 167 0 130 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 10 1 0 1 1 0 8 0 semapl 112 351 0 341 1 0 1 1 0 8 0 shmpl 112 108 0 21 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3541 0 2143 46 0 46 46 0 8 0 ffsino 240 3541 0 2143 83 0 83 83 0 8 0 nchpl 144 5844 0 4247 60 0 60 60 0 8 0 uvmvnodes 72 4667 0 0 85 0 85 85 0 8 0 vnodes 208 4667 0 0 246 0 246 246 0 8 0 namei 1024 20104 0 20104 1 0 1 1 0 8 1 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 520 18 0 10 2 1 1 1 0 8 0 scxspl 192 18924 0 18924 14 12 2 7 0 8 2 plimitpl 152 135 0 128 1 0 1 1 0 8 0 sigapl 432 1534 0 1520 2 0 2 2 0 8 0 futexpl 56 41318 0 41316 2 1 1 1 0 8 0 knotepl 112 303 0 282 1 0 1 1 0 8 0 kqueuepl 104 445 0 441 1 0 1 1 0 8 0 pipepl 112 1124 0 1105 3 1 2 2 0 8 1 fdescpl 424 1535 0 1520 2 0 2 2 0 8 0 filepl 120 14411 0 14302 8 4 4 5 0 8 0 lockfpl 104 582 0 581 1 0 1 1 0 8 0 lockfspl 48 186 0 185 1 0 1 1 0 8 0 sessionpl 112 23 0 13 1 0 1 1 0 8 0 pgrppl 48 35 0 25 1 0 1 1 0 8 0 ucredpl 96 1551 0 1544 1 0 1 1 0 8 0 zombiepl 144 1522 0 1522 2 1 1 1 0 8 1 processpl 864 1552 0 1522 4 0 4 4 0 8 0 procpl 632 3304 0 3264 5 1 4 5 0 8 0 sosppl 128 23 0 23 5 4 1 1 0 8 1 sockpl 384 3672 0 3642 13 9 4 7 0 8 1 mcl64k 65536 424 0 424 33 32 1 32 0 8 1 mcl16k 16384 13 0 13 5 4 1 1 0 8 1 mcl12k 12288 48 0 48 3 2 1 1 0 8 1 mcl9k 9216 24 0 24 7 6 1 1 0 8 1 mcl8k 8192 69 0 69 3 2 1 1 0 8 1 mcl4k 4096 175 0 175 3 2 1 1 0 8 1 mcl2k2 2112 19 0 19 5 4 1 1 0 8 1 mcl2k 2048 66900 0 66856 16 10 6 13 0 8 0 mtagpl 80 66 0 66 3 2 1 1 0 8 1 mbufpl 256 119282 0 119160 70 56 14 29 0 8 6 bufpl 256 10422 0 5319 320 0 320 320 0 8 0 anonpl 16 199582 0 179329 130 48 82 98 0 62 0 amapchunkpl 152 7896 0 7742 31 20 11 14 0 158 4 amappl16 192 9386 0 8236 115 57 58 68 0 8 0 amappl15 184 157 0 153 1 0 1 1 0 8 0 amappl14 176 356 0 347 1 0 1 1 0 8 0 amappl13 168 447 0 447 1 1 0 1 0 8 0 amappl12 160 259 0 258 2 1 1 1 0 8 0 amappl11 152 232 0 220 1 0 1 1 0 8 0 amappl10 144 70 0 66 1 0 1 1 0 8 0 amappl9 136 624 0 621 1 0 1 1 0 8 0 amappl8 128 234 0 191 2 0 2 2 0 8 0 amappl7 120 114 0 108 1 0 1 1 0 8 0 amappl6 112 218 0 207 1 0 1 1 0 8 0 amappl5 104 436 0 424 1 0 1 1 0 8 0 amappl4 96 1548 0 1518 1 0 1 1 0 8 0 amappl3 88 414 0 408 1 0 1 1 0 8 0 amappl2 80 11760 0 11683 3 1 2 3 0 8 0 amappl1 72 37640 0 37202 26 17 9 20 0 8 0 amappl 80 3630 0 3580 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 64 109 0 21 2 0 2 2 0 8 0 uaddrrnd 24 1553 0 1520 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1553 0 1520 1 0 1 1 0 8 0 vmmpekpl 168 14420 0 14396 2 0 2 2 0 8 0 vmmpepl 168 193245 0 190881 226 88 138 145 0 357 35 vmsppl 272 1534 0 1520 3 2 1 2 0 8 0 pdppl 4096 3112 0 3068 7 1 6 6 0 8 0 pvpl 32 509154 0 485237 256 57 199 223 0 265 6 pmappl 200 1552 0 1530 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 580 0 119 14 0 14 14 0 8 0