uvm_fault(0xfffffd807f00a5c0, 0x78573879290, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807f00a5c0, 0x78573879290, 0, 1) -> e in6_purgeaddr(ffff800000b79200) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800021b72b10, count: 0 ddb{0}> trace in6_purgeaddr(ffff800000b79200) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000b5e800) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000b5e800) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000b5e800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 ifioctl(fffffd807c331500,80206979,ffff800021b72f40,ffff800020abe508) at ifioctl+0x3f0 sys/net/if.c:1877 fifo_ioctl(ffff800021b72d88) at fifo_ioctl+0x9c sys/miscfs/fifofs/fifo_vnops.c:276 VOP_IOCTL(fffffd80707e49c8,80206979,ffff800021b72f40,3,fffffd807f7c6a20,ffff800020abe508) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 vn_ioctl(fffffd80661f0130,80206979,ffff800021b72f40,ffff800020abe508) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:536 sys_ioctl(ffff800020abe508,ffff800021b73058,ffff800021b730a0) at sys_ioctl+0x5b9 syscall(ffff800021b73120) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021b73120) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,8cedfdbe010) at Xsyscall+0x128 end of kernel end trace frame: 0x8d1522db360, count: -11 ddb{0}> show registers rdi 0 rsi 0x3ffff acpi_pdirpa+0x2be67 rbp 0xffff800021b72aa0 rbx 0 rdx 0x40000 acpi_pdirpa+0x2be68 rcx 0xffff800023da6000 rax 0 r8 0xffffffff819dccf4 rt_ifa_dellocal+0x44 r9 0x1 r10 0x18 r11 0xbcc5d1aa512770ab r12 0x78573879288 r13 0 r14 0xffff800000b79200 r15 0xffff800000b5e800 rip 0xffffffff8142a7b5 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800021b72a30 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{0}> show proc PROC (syz-executor.0) pid=92167 stat=onproc flags process=0 proc=4000000 pri=58, usrpri=58, nice=20 forw=0xffffffffffffffff, list=0xffff800020abeee8,0xffff800020abe790 process=0xffff800020adce00 user=0xffff800021b6e000, vmspace=0xfffffd807f00a5c0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98062 128755 79848 0 2 0 syz-executor.1 34778 139675 50652 0 2 0 syz-executor.0 *34778 92167 50652 0 7 0x4000000 syz-executor.0 50652 210253 46830 0 3 0x82 nanosleep syz-executor.0 79848 281611 46830 0 2 0x2 syz-executor.1 55869 320000 1 0 3 0x100083 ttyin getty 92733 376888 0 0 3 0x14200 acct acct 12750 172422 0 0 3 0x14200 bored sosplice 46830 81458 84686 0 3 0x82 thrsleep syz-fuzzer 46830 436012 84686 0 3 0x4000082 nanosleep syz-fuzzer 46830 89618 84686 0 3 0x4000082 thrsleep syz-fuzzer 46830 63780 84686 0 3 0x4000082 thrsleep syz-fuzzer 46830 253538 84686 0 3 0x4000082 thrsleep syz-fuzzer 46830 68963 84686 0 3 0x4000082 thrsleep syz-fuzzer 46830 319167 84686 0 3 0x4000082 thrsleep syz-fuzzer 46830 280503 84686 0 3 0x4000082 thrsleep syz-fuzzer 46830 472312 84686 0 3 0x4000082 kqread syz-fuzzer 46830 389599 84686 0 3 0x4000082 thrsleep syz-fuzzer 84686 364188 45339 0 3 0x10008a pause ksh 45339 459189 1939 0 3 0x92 select sshd 1939 230390 1 0 3 0x80 select sshd 62253 507470 49265 74 3 0x100092 bpf pflogd 49265 504358 1 0 3 0x80 netio pflogd 44588 349534 22501 73 3 0x100090 kqread syslogd 22501 454071 1 0 3 0x100082 netio syslogd 99598 114716 1 77 7 0x100090 dhclient 31737 222756 1 0 3 0x80 poll dhclient 45514 408871 0 0 3 0x14200 pgzero zerothread 90578 317991 0 0 3 0x14200 aiodoned aiodoned 75891 308578 0 0 3 0x14200 syncer update 85381 421122 0 0 3 0x14200 cleaner cleaner 77758 110423 0 0 3 0x14200 reaper reaper 62481 90216 0 0 3 0x14200 pgdaemon pagedaemon 5563 314436 0 0 3 0x14200 bored crynlk 51401 440743 0 0 3 0x14200 bored crypto 86334 167419 0 0 3 0x40014200 acpi0 acpi0 61913 12368 0 0 3 0x40014200 idle1 23543 59485 0 0 3 0x14200 bored softnet 44790 445974 0 0 2 0x14200 systqmp 82438 128644 0 0 3 0x14200 bored systq 38899 136751 0 0 3 0x40014200 bored softclock 90995 456164 0 0 3 0x40014200 idle0 4423 201945 0 0 3 0x14200 bored smr 1 45571 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34778 (syz-executor.0) thread 0xffff800020abe508 (92167) exclusive rwlock netlock r = 0 (0xffffffff824dc718) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 if_detach+0x75 sys/net/if.c:1085 #2 tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 #3 ifioctl+0x3f0 sys/net/if.c:1877 #4 fifo_ioctl+0x9c sys/miscfs/fifofs/fifo_vnops.c:276 #5 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 #6 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:536 #7 sys_ioctl+0x5b9 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82648ec0) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9625 7095K 9227K 78643K 37335 0 0 pcb 13 10K 12K 78643K 1144 0 0 rtable 131 15K 15K 78643K 3126 0 0 ifaddr 113 24K 25K 78643K 965 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1681 0 0 iov 0 0K 32K 78643K 1074 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1227 77K 77K 78643K 8992 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 62 0 0 VM map 43 21K 22K 78643K 60 0 0 sem 12 0K 0K 78643K 2391 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 5005 0 0 sigio 0 0K 0K 78643K 46 0 0 proc 62 63K 87K 78643K 2245 0 0 subproc 32 2K 2K 78643K 527 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 479 0 0 in_multi 28 1K 2K 78643K 723 0 0 ether_multi 1 0K 0K 78643K 56 0 0 mrt 1 0K 0K 78643K 33 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 90 397K 397K 78643K 90 0 0 exec 0 0K 1K 78643K 1156 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 211 293K 310K 78643K 18886 0 0 UVM aobj 130 4K 4K 78643K 140 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 1168 0 0 NDP 25 0K 1K 78643K 310 0 0 temp 264 3561K 4201K 78643K 135941 0 0 kqueue 0 0K 0K 78643K 48 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 74 0 70 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 446 0 444 1 0 1 1 0 8 0 rtentry 112 590 0 542 2 0 2 2 0 8 0 unpcb 120 3132 0 3114 11 10 1 2 0 8 0 syncache 264 31 0 31 14 14 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 38 0 38 12 12 0 1 0 8 0 tcpcb 544 3049 0 3045 53 52 1 13 0 8 0 inpcb 280 9161 0 9153 48 47 1 9 0 8 0 rttmr 72 11 0 11 7 7 0 1 0 8 0 ip6q 72 2 0 2 2 2 0 1 0 8 0 ip6af 40 1 0 1 1 1 0 1 0 8 0 nd6 48 94 0 91 4 3 1 1 0 8 0 pkpcb 40 10 0 10 6 6 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 134 0 134 22 22 0 1 0 8 0 pffrag 232 135 0 135 22 22 0 1 0 482 0 pffrnode 88 135 0 135 22 22 0 1 0 8 0 pffrent 40 4600 0 4600 22 22 0 1 0 8 0 pfosfp 40 846 0 846 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfstitem 24 433 0 408 1 0 1 1 0 8 0 pfstkey 112 433 0 408 2 0 2 2 0 8 0 pfstate 328 433 0 408 10 4 6 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 25 0 19 17 11 6 7 0 8 0 art_heap4 256 2857 0 2590 41 23 18 19 0 8 0 art_table 32 2882 0 2609 3 0 3 3 0 8 0 art_node 16 584 0 536 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 34 1 0 1 1 0 8 0 semapl 112 2389 0 2379 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 9096 0 7666 47 0 47 47 0 8 0 ffsino 272 9096 0 7666 97 1 96 96 0 8 0 nchpl 144 18420 0 17950 64 45 19 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 74464 0 74464 5 4 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 41 0 0 6 0 6 6 0 8 0 vmpool 552 58 0 17 3 0 3 3 0 8 0 scsiplug 64 8 0 8 5 5 0 1 0 8 0 scxspl 192 53425 0 53425 42 40 2 7 0 8 2 plimitpl 152 419 0 411 1 0 1 1 0 8 0 sigapl 432 5120 0 5104 3 1 2 3 0 8 0 futexpl 56 131902 0 131902 4 3 1 1 0 8 1 knotepl 112 1228 0 1209 8 7 1 3 0 8 0 kqueuepl 104 1861 0 1859 14 13 1 4 0 8 0 pipepl 112 2916 0 2895 5 4 1 2 0 8 0 fdescpl 488 5121 0 5104 3 0 3 3 0 8 0 filepl 152 48675 0 48569 56 51 5 14 0 8 0 lockfpl 104 1748 0 1747 1 0 1 1 0 8 0 lockfspl 48 613 0 612 1 0 1 1 0 8 0 sessionpl 112 51 0 40 1 0 1 1 0 8 0 pgrppl 48 165 0 154 1 0 1 1 0 8 0 ucredpl 96 5574 0 5565 1 0 1 1 0 8 0 zombiepl 144 5104 0 5104 6 5 1 1 0 8 1 processpl 896 5138 0 5104 4 0 4 4 0 8 0 procpl 632 16422 0 16378 12 8 4 5 0 8 0 srpgc 64 40 0 38 15 14 1 1 0 8 0 sosppl 128 156 0 155 22 21 1 1 0 8 0 sockpl 384 12948 0 12920 76 72 4 15 0 8 0 mcl64k 65536 658 0 0 60 27 33 34 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 31 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 0 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 183 0 0 20 4 16 20 0 8 0 mtagpl 80 80 0 0 1 0 1 1 0 8 0 mbufpl 256 776 0 0 24 0 24 24 0 8 0 bufpl 256 20376 0 13318 442 0 442 442 0 8 0 anonpl 16 663000 0 641125 243 138 105 105 0 124 14 amapchunkpl 152 39552 0 39384 82 74 8 21 0 158 0 amappl16 192 31235 0 29986 234 159 75 75 0 8 9 amappl15 184 257 0 253 4 3 1 1 0 8 0 amappl14 176 728 0 722 1 0 1 1 0 8 0 amappl13 168 692 0 692 5 5 0 1 0 8 0 amappl12 160 749 0 747 1 0 1 1 0 8 0 amappl11 152 882 0 867 1 0 1 1 0 8 0 amappl10 144 744 0 740 1 0 1 1 0 8 0 amappl9 136 1979 0 1974 1 0 1 1 0 8 0 amappl8 128 1570 0 1512 2 0 2 2 0 8 0 amappl7 120 869 0 861 1 0 1 1 0 8 0 amappl6 112 794 0 782 1 0 1 1 0 8 0 amappl5 104 1137 0 1121 1 0 1 1 0 8 0 amappl4 96 5423 0 5388 1 0 1 1 0 8 0 amappl3 88 1097 0 1090 1 0 1 1 0 8 0 amappl2 80 38857 0 38780 3 1 2 3 0 8 0 amappl1 72 125280 0 124840 25 15 10 20 0 8 0 amappl 80 17296 0 17224 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 64 139 0 10 3 0 3 3 0 8 0 uaddrrnd 24 5179 0 5104 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5179 0 5104 1 0 1 1 0 8 0 vmmpekpl 168 44447 0 44406 3 0 3 3 0 8 0 vmmpepl 168 666050 0 663421 389 232 157 170 0 357 36 vmsppl 368 5120 0 5104 2 0 2 2 0 8 0 pdppl 4096 10365 0 10283 12 1 11 11 0 8 0 pvpl 32 1676975 0 1653400 458 229 229 231 0 265 33 pmappl 232 5178 0 5121 6 2 4 4 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 791 0 128 20 0 20 20 0 8 0