uvm_fault(0xfffffd807f00a2e0, 0x12, 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(0xfffffd807f00a2e0, 0x12, 0, 1) -> e in6_purgeaddr(ffff800000cb7b00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff8000239ded70, count: 0 ddb{1}> trace in6_purgeaddr(ffff800000cb7b00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000b31800) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 ifioctl(fffffd8070609030,801169ac,ffff8000239dee50,ffff800020ab0c70) at ifioctl+0x12a8 sys/net/if.c:1929 sys_ioctl(ffff800020ab0c70,ffff8000239def68,ffff8000239defb0) at sys_ioctl+0x5b9 syscall(ffff8000239df030) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff8000239df030) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,5694dcf0010) at Xsyscall+0x128 end of kernel end trace frame: 0x56c1e90f760, count: -6 ddb{1}> show registers rdi 0 rsi 0x3ffff acpi_pdirpa+0x2be67 rbp 0xffff8000239ded00 rbx 0 rdx 0x40000 acpi_pdirpa+0x2be68 rcx 0xffff800020b52000 rax 0 r8 0xffffffff81cdc104 rt_ifa_dellocal+0x44 r9 0x1 r10 0x18 r11 0x8e535c210e1697f0 r12 0xa r13 0 r14 0xffff800000cb7b00 r15 0xffff800000b31800 rip 0xffffffff82171be5 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff8000239dec90 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> show proc PROC (syz-executor.1) pid=248952 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0018,0xffffffff8266aad8 process=0xffff800020adc380 user=0xffff8000239da000, vmspace=0xfffffd807f00a2e0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97647 328762 19696 0 2 0 syz-executor.1 *97647 248952 19696 0 7 0x4000000 syz-executor.1 19696 249364 97038 0 3 0x82 nanosleep syz-executor.1 46665 448875 97038 0 3 0x82 nanosleep syz-executor.0 44437 52909 1 0 3 0x100083 ttyin getty 63429 469851 0 0 3 0x14200 acct acct 92471 63181 0 0 3 0x14200 bored sosplice 97038 358297 18485 0 3 0x82 thrsleep syz-fuzzer 97038 159674 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 184889 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 443128 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 163095 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 512046 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 353007 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 135441 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 524066 18485 0 3 0x4000082 thrsleep syz-fuzzer 97038 226161 18485 0 3 0x4000082 kqread syz-fuzzer 18485 275965 82729 0 3 0x10008a pause ksh 82729 305168 8761 0 3 0x92 select sshd 8761 136848 1 0 3 0x80 select sshd 59342 173 36705 74 3 0x100092 bpf pflogd 36705 262977 1 0 3 0x80 netio pflogd 35614 42116 82738 73 3 0x100090 kqread syslogd 82738 262142 1 0 3 0x100082 netio syslogd 24526 268065 1 77 3 0x100090 poll dhclient 56802 176777 1 0 3 0x80 poll dhclient 32070 324877 0 0 2 0x14200 zerothread 84469 326200 0 0 3 0x14200 aiodoned aiodoned 9883 97239 0 0 3 0x14200 syncer update 49192 296205 0 0 3 0x14200 cleaner cleaner 9067 59437 0 0 7 0x14200 reaper 87259 104173 0 0 3 0x14200 pgdaemon pagedaemon 36744 287908 0 0 3 0x14200 bored crynlk 22435 456735 0 0 3 0x14200 bored crypto 41239 421080 0 0 3 0x40014200 acpi0 acpi0 46780 145930 0 0 3 0x40014200 idle1 18326 86285 0 0 3 0x14200 bored softnet 1844 226179 0 0 2 0x14200 systqmp 75361 199285 0 0 3 0x14200 bored systq 73101 186428 0 0 3 0x40014200 bored softclock 2935 487464 0 0 3 0x40014200 idle0 15102 162560 0 0 3 0x14200 bored smr 1 520124 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97647 (syz-executor.1) thread 0xffff800020ab0c70 (248952) exclusive rwlock netlock r = 0 (0xffffffff824895c8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 ifioctl+0xc62 sys/net/if.c:1917 #2 sys_ioctl+0x5b9 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82663580) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9650 6604K 8792K 78643K 41662 0 0 pcb 13 10K 12K 78643K 1958 0 0 rtable 167 17K 17K 78643K 5517 0 0 ifaddr 121 30K 33K 78643K 1633 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1866 0 0 iov 0 0K 32K 78643K 1845 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1226 77K 78K 78643K 11608 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 107 0 0 VM map 69 34K 35K 78643K 115 0 0 sem 12 0K 0K 78643K 3334 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 8697 0 0 sigio 0 0K 0K 78643K 117 0 0 proc 62 63K 95K 78643K 3884 0 0 subproc 32 2K 2K 78643K 1073 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 697 0 0 in_multi 37 2K 3K 78643K 1208 0 0 ether_multi 1 0K 0K 78643K 84 0 0 mrt 3 0K 0K 78643K 41 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 2058 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 246 554K 563K 78643K 32082 0 0 UVM aobj 130 4K 4K 78643K 133 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 1954 0 0 NDP 26 0K 1K 78643K 533 0 0 temp 272 3566K 4205K 78643K 325329 0 0 kqueue 0 0K 0K 78643K 93 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 64 148 0 142 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 824 0 822 1 0 1 1 0 8 0 rtentry 112 1000 0 933 3 0 3 3 0 8 0 unpcb 120 13436 0 13425 28 27 1 2 0 8 0 syncache 264 57 0 57 22 21 1 1 0 8 1 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 88 0 88 11 10 1 1 0 8 1 tcpcb 544 4063 0 4059 41 40 1 13 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 4 0 4 2 2 0 1 0 8 0 inpcb 280 13391 0 13383 53 51 2 9 0 8 1 rttmr 72 11 0 11 8 8 0 1 0 8 0 ip6q 72 3 0 3 3 3 0 1 0 8 0 ip6af 40 8 0 8 3 3 0 1 0 8 0 nd6 48 165 0 162 6 5 1 1 0 8 0 pkpcb 40 42 0 42 13 13 0 1 0 8 0 swfcl 56 6 0 0 1 0 1 1 0 8 0 ppxss 1128 223 0 223 20 20 0 1 0 8 0 pffrag 232 175 0 175 23 22 1 1 0 482 1 pffrnode 88 169 0 169 23 22 1 1 0 8 1 pffrent 40 4998 0 4998 23 22 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 24 673 0 615 1 0 1 1 0 8 0 pfstkey 112 673 0 615 4 1 3 3 0 8 0 pfstate 328 673 0 615 10 3 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 14 0 8 10 4 6 6 0 8 0 art_heap4 256 4410 0 4101 59 39 20 20 0 8 0 art_table 32 4424 0 4109 4 1 3 3 0 8 0 art_node 16 997 0 944 1 0 1 1 0 8 0 sysvmsgpl 40 64 0 47 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 3332 0 3322 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 14502 0 13051 48 1 47 48 0 8 0 ffsino 272 14502 0 13051 101 3 98 98 0 8 0 nchpl 144 31667 0 31173 63 42 21 61 0 8 0 uvmvnodes 72 7020 0 0 128 0 128 128 0 8 0 vnodes 208 7020 0 0 370 0 370 370 0 8 0 namei 1024 133930 0 133930 5 4 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 67 0 0 9 0 9 9 0 8 0 vmpool 552 113 0 46 8 3 5 5 0 8 0 scsiplug 64 6 0 6 4 4 0 1 0 8 0 scxspl 192 90728 0 90728 61 57 4 7 0 8 4 plimitpl 152 730 0 722 1 0 1 1 0 8 0 sigapl 432 8721 0 8706 4 2 2 3 0 8 0 futexpl 56 223421 0 223421 3 2 1 1 0 8 1 knotepl 112 2179 0 2160 11 10 1 2 0 8 0 kqueuepl 104 2632 0 2630 4 3 1 4 0 8 0 pipepl 112 5732 0 5713 15 14 1 2 0 8 0 fdescpl 488 8722 0 8706 3 0 3 3 0 8 0 filepl 152 100309 0 100208 59 54 5 13 0 8 0 lockfpl 104 3071 0 3070 1 0 1 1 0 8 0 lockfspl 48 1071 0 1070 1 0 1 1 0 8 0 sessionpl 112 88 0 77 1 0 1 1 0 8 0 pgrppl 48 202 0 191 1 0 1 1 0 8 0 ucredpl 96 9250 0 9241 1 0 1 1 0 8 0 zombiepl 144 8708 0 8707 3 2 1 1 0 8 0 processpl 896 8741 0 8707 5 1 4 5 0 8 0 procpl 632 28002 0 27957 8 3 5 5 0 8 0 srpgc 64 117 0 117 36 36 0 1 0 8 0 sosppl 128 202 0 202 34 33 1 1 0 8 1 sockpl 384 27874 0 27853 96 91 5 14 0 8 2 mcl64k 65536 1018 0 0 113 49 64 66 0 8 1 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 50 0 0 5 2 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 179 0 0 19 3 16 19 0 8 0 mtagpl 80 407 0 0 3 0 3 3 0 8 0 mbufpl 256 1334 0 0 52 0 52 52 0 8 0 bufpl 256 37054 0 29982 443 0 443 443 0 8 0 anonpl 16 1154233 0 1129204 336 204 132 132 0 124 23 amapchunkpl 152 68800 0 68344 123 99 24 32 0 158 4 amappl16 192 52027 0 50763 351 279 72 87 0 8 8 amappl15 184 496 0 496 7 7 0 1 0 8 0 amappl14 176 2514 0 2508 1 0 1 1 0 8 0 amappl13 168 377 0 377 11 11 0 1 0 8 0 amappl12 160 874 0 870 2 1 1 1 0 8 0 amappl11 152 2115 0 2100 1 0 1 1 0 8 0 amappl10 144 946 0 937 1 0 1 1 0 8 0 amappl9 136 2785 0 2781 1 0 1 1 0 8 0 amappl8 128 2451 0 2383 3 0 3 3 0 8 0 amappl7 120 1192 0 1183 1 0 1 1 0 8 0 amappl6 112 1922 0 1903 1 0 1 1 0 8 0 amappl5 104 1489 0 1472 1 0 1 1 0 8 0 amappl4 96 8423 0 8388 1 0 1 1 0 8 0 amappl3 88 3040 0 3030 1 0 1 1 0 8 0 amappl2 80 65540 0 65457 3 1 2 3 0 8 0 amappl1 72 207486 0 207022 26 16 10 20 0 8 0 amappl 80 29462 0 29373 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 64 132 0 3 3 0 3 3 0 8 0 uaddrrnd 24 8835 0 8706 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8835 0 8706 1 0 1 1 0 8 0 vmmpekpl 168 75933 0 75886 3 0 3 3 0 8 0 vmmpepl 168 1137192 0 1134502 424 264 160 174 0 357 35 vmsppl 368 8721 0 8705 2 0 2 2 0 8 0 pdppl 4096 17677 0 17569 18 4 14 14 0 8 0 pvpl 32 2898214 0 2876199 596 355 241 241 0 265 46 pmappl 232 8834 0 8751 8 3 5 5 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 883 0 153 21 0 21 21 0 8 0