uvm_fault(0xfffffd807f00acf0, 0xa0a293038, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807f00acf0, 0xa0a293038, 0, 1) -> e in6_purgeaddr(ffff800000b16000) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800022d76b20, count: 0 ddb{1}> trace in6_purgeaddr(ffff800000b16000) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000a94800) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000a94800) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000a94800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 spec_close(ffff800022d76c50) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806ec2b5b8,7,fffffd807f7c6720,ffff800020ab0780) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8064bed868,ffff800020ab0780) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd8064bed868,ffff800020ab0780) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:613 fdrop(fffffd8064bed868,ffff800020ab0780) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8064bed868,ffff800020ab0780) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ab0780) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ab0780,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ab0780,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ab0780,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ab0780) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall(6,0,7f7ffffe8cd0,88,0,7f7ffffe8cf4) at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffe8d40, count: -14 ddb{1}> show registers rdi 0x1 rsi 0x1 rbp 0xffff800022d76ab0 rbx 0xffff800000b16100 rdx 0 rcx 0 rax 0 r8 0xffffffff81cdc104 rt_ifa_dellocal+0x44 r9 0x1 r10 0x18 r11 0x7c440c97db344b3c r12 0xa0a293030 r13 0 r14 0xffff800000b16000 r15 0xffff800000a94800 rip 0xffffffff82171be5 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800022d76a40 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> show proc PROC (syz-executor.1) pid=82836 stat=onproc flags process=a proc=2000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab13d8,0xffff800020ab0ef8 process=0xffff800020adce00 user=0xffff800022d72000, vmspace=0xfffffd807f00acf0 estcpu=36, cpticks=10, pctcpu=0.38 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3100 121288 51685 0 7 0 syz-executor.0 3100 416201 51685 0 2 0x4000000 syz-executor.0 3100 73198 51685 0 3 0x4000080 fsleep syz-executor.0 51685 160664 52960 0 3 0x82 nanosleep syz-executor.0 49092 83345 1 0 3 0x100083 ttyin getty 33814 393949 0 0 3 0x14200 bored sosplice 31068 171534 0 0 3 0x14200 acct acct 52960 4888 30144 0 3 0x82 thrsleep syz-fuzzer 52960 310165 30144 0 3 0x4000082 nanosleep syz-fuzzer 52960 213012 30144 0 3 0x4000082 thrsleep syz-fuzzer 52960 204544 30144 0 3 0x4000082 thrsleep syz-fuzzer 52960 421375 30144 0 3 0x4000082 thrsleep syz-fuzzer 52960 330864 30144 0 3 0x4000082 thrsleep syz-fuzzer 52960 218916 30144 0 3 0x4000082 thrsleep syz-fuzzer 52960 445804 30144 0 3 0x4000082 nanosleep syz-fuzzer 52960 201659 30144 0 3 0x4000082 thrsleep syz-fuzzer 52960 50028 30144 0 2 0x4000082 syz-fuzzer 30144 283083 58663 0 3 0x10008a pause ksh 58663 453828 37960 0 3 0x92 select sshd 37960 428387 1 0 3 0x80 select sshd 78650 3321 42341 74 3 0x100092 bpf pflogd 42341 465730 1 0 3 0x80 netio pflogd 6014 3390 26478 73 3 0x100010 ffs_fsync syslogd 26478 192839 1 0 3 0x100082 netio syslogd 29118 404886 1 77 2 0x100090 dhclient 91956 80600 1 0 3 0x80 poll dhclient 42611 268491 0 0 2 0x14200 zerothread 96307 261999 0 0 3 0x14200 aiodoned aiodoned 942 148672 0 0 3 0x14200 syncer update 82366 138373 0 0 3 0x14200 cleaner cleaner 18147 440883 0 0 3 0x14200 reaper reaper 16353 439493 0 0 3 0x14200 pgdaemon pagedaemon 39994 289350 0 0 3 0x14200 bored crynlk 65979 271602 0 0 3 0x14200 bored crypto 13012 305498 0 0 3 0x40014200 acpi0 acpi0 84993 789 0 0 3 0x40014200 idle1 26230 495852 0 0 2 0x14200 softnet 26879 237818 0 0 2 0x14200 systqmp 85354 163677 0 0 3 0x14200 bored systq 72440 440280 0 0 3 0x40014200 bored softclock 68839 230876 0 0 3 0x40014200 idle0 89980 170557 0 0 3 0x14200 bored smr 1 229706 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 6014 (syslogd) thread 0xffff800020ac0010 (3390) exclusive rrwlock inode r = 0 (0xfffffd806eb0e918) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:574 #5 sys_fsync+0x114 sys/kern/vfs_syscalls.c:2806 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9571 6449K 7736K 78643K 19010 0 0 pcb 13 10K 12K 78643K 688 0 0 rtable 113 13K 14K 78643K 1355 0 0 ifaddr 81 17K 18K 78643K 369 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1558 0 0 iov 0 0K 32K 78643K 1095 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1224 77K 77K 78643K 3903 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 32 0 0 VM map 13 6K 6K 78643K 14 0 0 sem 12 1K 1K 78643K 1098 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 1745 0 0 sigio 0 0K 0K 78643K 23 0 0 proc 61 63K 95K 78643K 1173 0 0 subproc 23 1K 2K 78643K 238 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 157 0 0 in_multi 31 2K 2K 78643K 287 0 0 ether_multi 1 0K 0K 78643K 10 0 0 mrt 0 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 541 0 0 pfkey data 0 0K 0K 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 158 130K 130K 78643K 7115 0 0 UVM aobj 130 7K 7K 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 687 0 0 NDP 20 0K 0K 78643K 121 0 0 temp 224 3564K 4200K 78643K 65649 0 0 kqueue 0 0K 0K 78643K 19 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 47 0 42 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 174 0 172 1 0 1 1 0 8 0 rtentry 112 274 0 232 2 0 2 2 0 8 0 unpcb 120 963 0 946 3 2 1 2 0 8 0 syncache 264 12 0 12 5 5 0 1 0 8 0 tcpqe 32 87 0 87 1 1 0 1 0 8 0 tcpcb 544 771 0 767 3 1 2 2 0 8 1 inpcb 280 3265 0 3255 18 16 2 13 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 50 0 46 1 0 1 1 0 8 0 pkpcb 40 10 0 10 5 5 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 38 0 38 7 6 1 1 0 8 1 pffrag 232 48 0 48 6 5 1 1 0 482 1 pffrnode 88 48 0 48 6 5 1 1 0 8 1 pffrent 40 1049 0 1049 6 5 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 24 167 0 89 1 0 1 1 0 8 0 pfstkey 112 167 0 89 3 0 3 3 0 8 0 pfstate 328 167 0 89 7 0 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 3 0 2 3 2 1 3 0 8 0 art_heap4 256 1352 0 1103 28 10 18 18 0 8 1 art_table 32 1355 0 1105 3 0 3 3 0 8 0 art_node 16 273 0 233 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 22 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1094 0 1084 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 4301 0 2886 46 0 46 46 0 8 0 ffsino 272 4301 0 2886 95 0 95 95 0 8 0 nchpl 144 7074 0 5462 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 25412 0 25412 4 3 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 552 12 0 1 1 0 1 1 0 8 0 scxspl 192 22741 0 22740 17 14 3 7 0 8 2 plimitpl 152 149 0 141 1 0 1 1 0 8 0 sigapl 432 1908 0 1893 3 1 2 3 0 8 0 futexpl 56 45295 0 45294 1 0 1 1 0 8 0 knotepl 112 494 0 475 5 3 2 2 0 8 1 kqueuepl 104 517 0 515 1 0 1 1 0 8 0 pipepl 112 1296 0 1278 6 5 1 2 0 8 0 fdescpl 488 1909 0 1893 3 0 3 3 0 8 0 filepl 152 17701 0 17603 21 14 7 13 0 8 2 lockfpl 104 587 0 586 1 0 1 1 0 8 0 lockfspl 48 215 0 214 1 0 1 1 0 8 0 sessionpl 112 31 0 20 1 0 1 1 0 8 0 pgrppl 48 58 0 47 1 0 1 1 0 8 0 ucredpl 96 2116 0 2107 1 0 1 1 0 8 0 zombiepl 144 1894 0 1893 4 3 1 1 0 8 0 processpl 896 1926 0 1893 4 0 4 4 0 8 0 procpl 632 5661 0 5617 7 2 5 5 0 8 1 srpgc 64 10 0 10 5 5 0 1 0 8 0 sosppl 128 47 0 47 8 8 0 1 0 8 0 sockpl 384 4449 0 4418 33 28 5 22 0 8 1 mcl64k 65536 566 0 0 68 5 63 66 0 8 1 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 206 0 0 25 2 23 25 0 8 0 mtagpl 80 40 0 0 1 0 1 1 0 8 0 mbufpl 256 705 0 0 40 0 40 40 0 8 0 bufpl 256 12433 0 5375 442 0 442 442 0 8 0 anonpl 16 254600 0 234116 123 36 87 100 0 124 0 amapchunkpl 152 15201 0 15044 41 27 14 14 0 158 7 amappl16 192 10293 0 9121 111 51 60 71 0 8 1 amappl15 184 189 0 189 1 1 0 1 0 8 0 amappl14 176 406 0 400 1 0 1 1 0 8 0 amappl13 168 351 0 348 1 0 1 1 0 8 0 amappl12 160 142 0 142 3 3 0 1 0 8 0 amappl11 152 229 0 214 1 0 1 1 0 8 0 amappl10 144 279 0 273 1 0 1 1 0 8 0 amappl9 136 1114 0 1109 1 0 1 1 0 8 0 amappl8 128 680 0 629 2 0 2 2 0 8 0 amappl7 120 333 0 322 1 0 1 1 0 8 0 amappl6 112 210 0 198 1 0 1 1 0 8 0 amappl5 104 366 0 352 1 0 1 1 0 8 0 amappl4 96 2130 0 2094 1 0 1 1 0 8 0 amappl3 88 611 0 603 1 0 1 1 0 8 0 amappl2 80 13998 0 13923 3 1 2 3 0 8 0 amappl1 72 52992 0 52539 25 15 10 20 0 8 0 amappl 80 6158 0 6104 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 1921 0 1893 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1921 0 1893 1 0 1 1 0 8 0 vmmpekpl 168 19670 0 19629 2 0 2 2 0 8 0 vmmpepl 168 251667 0 249274 215 65 150 150 0 357 38 vmsppl 368 1908 0 1893 2 0 2 2 0 8 0 pdppl 4096 3849 0 3799 8 1 7 7 0 8 0 pvpl 32 659088 0 635715 259 60 199 234 0 265 3 pmappl 232 1920 0 1894 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 733 0 28 21 0 21 21 0 8 0