uvm_fault(0xfffffd807f00a730, 0x4af82a, 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(0xfffffd807f00a730, 0x4af82a, 0, 1) -> e in6_purgeaddr(ffff800000a47700) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800021baf720, count: 0 ddb{1}> trace in6_purgeaddr(ffff800000a47700) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000a97000) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000a97000) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000a97000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 ifioctl(fffffd8061db64e8,80206979,ffff800021bafb50,ffff800020ace788) at ifioctl+0x3f0 sys/net/if.c:1877 fifo_ioctl(ffff800021baf998) at fifo_ioctl+0x104 sys/miscfs/fifofs/fifo_vnops.c:282 VOP_IOCTL(fffffd8061bcc348,80206979,ffff800021bafb50,82,fffffd807f7c6840,ffff800020ace788) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 vn_ioctl(fffffd8062ffca38,80206979,ffff800021bafb50,ffff800020ace788) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:536 sys_ioctl(ffff800020ace788,ffff800021bafc68,ffff800021bafcb0) at sys_ioctl+0x5b9 syscall(ffff800021bafd30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021bafd30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,9cd5dbaa010) at Xsyscall+0x128 end of kernel end trace frame: 0x9cfacdf4af0, count: -11 ddb{1}> show registers rdi 0xffffffff819d9819 rtfree+0x59 rsi 0x3d2e3 acpi_pdirpa+0x2914b rbp 0xffff800021baf6b0 rbx 0 rdx 0x3d2e4 acpi_pdirpa+0x2914c rcx 0xffff800022d84000 rax 0 r8 0xffffffff819dccf4 rt_ifa_dellocal+0x44 r9 0x1 r10 0x18 r11 0x263da89c8748276 r12 0x4af822 acpi_pdirpa+0x49b68a r13 0 r14 0xffff800000a47700 r15 0xffff800000a97000 rip 0xffffffff8142a7b5 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800021baf640 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> show proc PROC (syz-executor.1) pid=413546 stat=onproc flags process=0 proc=4000000 pri=73, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff800020acea00,0xffff800020acfb58 process=0xffff800020adc380 user=0xffff800021baa000, vmspace=0xfffffd807f00a730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 15789 318626 84023 0 2 0 syz-executor.1 *15789 413546 84023 0 7 0x4000000 syz-executor.1 15789 139201 84023 0 3 0x4000080 fsleep syz-executor.1 73539 138128 0 0 3 0x14200 acct acct 70376 119117 41279 0 3 0x80 nanosleep syz-executor.0 70376 397407 41279 0 3 0x4000080 msgwait syz-executor.0 70376 194969 41279 0 3 0x4000080 kqread syz-executor.0 70376 12387 41279 0 3 0x4000080 fsleep syz-executor.0 84023 165396 42070 0 3 0x82 nanosleep syz-executor.1 41279 396286 42070 0 3 0x82 nanosleep syz-executor.0 42070 10545 39884 0 3 0x82 thrsleep syz-fuzzer 42070 383362 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 141635 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 114418 39884 0 3 0x4000082 kqread syz-fuzzer 42070 502849 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 192743 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 424291 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 7570 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 458625 39884 0 3 0x4000082 thrsleep syz-fuzzer 42070 313252 39884 0 3 0x4000082 thrsleep syz-fuzzer 39884 503909 35335 0 3 0x10008a pause ksh 35335 432390 18567 0 3 0x92 select sshd 72587 321830 1 0 3 0x100083 ttyin getty 18567 60803 1 0 3 0x80 select sshd 82191 396674 39193 74 3 0x100092 bpf pflogd 39193 426631 1 0 3 0x80 netio pflogd 74328 279378 56651 73 3 0x100090 kqread syslogd 56651 271572 1 0 3 0x100082 netio syslogd 12906 189210 1 77 7 0x100090 dhclient 82966 378918 1 0 3 0x80 poll dhclient 28040 123524 0 0 3 0x14200 pgzero zerothread 83433 355038 0 0 3 0x14200 aiodoned aiodoned 10553 485371 0 0 3 0x14200 syncer update 85750 103367 0 0 3 0x14200 cleaner cleaner 32616 400320 0 0 3 0x14200 reaper reaper 90081 19283 0 0 3 0x14200 pgdaemon pagedaemon 46753 194772 0 0 3 0x14200 bored crynlk 81839 18228 0 0 3 0x14200 bored crypto 71518 143767 0 0 3 0x40014200 acpi0 acpi0 7727 497734 0 0 3 0x40014200 idle1 36237 214578 0 0 3 0x14200 bored softnet 21361 484095 0 0 2 0x14200 systqmp 21517 434736 0 0 2 0x14200 systq 72180 73127 0 0 3 0x40014200 bored softclock 12439 279347 0 0 3 0x40014200 idle0 79454 372308 0 0 3 0x14200 bored smr 1 406219 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 15789 (syz-executor.1) thread 0xffff800020ace788 (413546) 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+0x104 sys/miscfs/fifofs/fifo_vnops.c:282 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9530 6672K 6930K 78643K 10914 0 0 pcb 13 10K 12K 78643K 55 0 0 rtable 94 3K 4K 78643K 293 0 0 ifaddr 58 12K 13K 78643K 76 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1470 0 0 iov 0 0K 16K 78643K 24 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1220 77K 77K 78643K 1315 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 3 1K 1K 78643K 3 0 0 sem 12 0K 0K 78643K 57 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 158 0 0 sigio 0 0K 0K 78643K 3 0 0 proc 60 63K 95K 78643K 449 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 34 0 0 in_multi 23 1K 2K 78643K 44 0 0 ether_multi 1 0K 0K 78643K 2 0 0 mrt 0 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 221 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 119 38K 39K 78643K 1486 0 0 UVM aobj 30 2K 2K 78643K 30 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 26 0 0 NDP 12 0K 0K 78643K 20 0 0 temp 165 3561K 3635K 78643K 14852 0 0 kqueue 0 0K 0K 78643K 1 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 9 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 64 0 27 2 0 2 2 0 8 0 unpcb 120 115 0 103 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 122 0 122 1 1 0 1 0 8 0 tcpcb 544 326 0 322 11 2 9 11 0 8 8 inpcb 280 587 0 579 9 0 9 9 0 8 8 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1128 3 0 3 2 1 1 1 0 8 1 pffrag 232 3 0 3 2 1 1 1 0 482 1 pffrnode 88 3 0 3 2 1 1 1 0 8 1 pffrent 40 135 0 135 2 1 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 20 0 4 1 0 1 1 0 8 0 pfstkey 112 20 0 4 1 0 1 1 0 8 0 pfstate 328 20 0 4 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 287 0 64 15 0 15 15 0 8 0 art_table 32 288 0 64 2 0 2 2 0 8 0 art_node 16 63 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 33 0 23 1 0 1 1 0 8 0 semapl 112 55 0 45 1 0 1 1 0 8 0 shmpl 112 28 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1627 0 218 46 0 46 46 0 8 0 ffsino 272 1627 0 218 94 0 94 94 0 8 0 nchpl 144 2065 0 448 61 0 61 61 0 8 0 uvmvnodes 72 1738 0 0 32 0 32 32 0 8 0 vnodes 208 1738 0 0 92 0 92 92 0 8 0 namei 1024 5763 0 5763 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 552 1 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 6034 0 6034 7 4 3 6 0 8 3 plimitpl 152 23 0 15 1 0 1 1 0 8 0 sigapl 432 356 0 340 3 1 2 3 0 8 0 futexpl 56 4429 0 4427 1 0 1 1 0 8 0 knotepl 112 248 0 229 2 1 1 2 0 8 0 kqueuepl 104 383 0 379 4 0 4 4 0 8 3 pipepl 112 238 0 217 1 0 1 1 0 8 0 fdescpl 488 357 0 340 3 0 3 3 0 8 0 filepl 152 2959 0 2845 14 2 12 14 0 8 7 lockfpl 104 76 0 75 1 0 1 1 0 8 0 lockfspl 48 27 0 26 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 149 0 140 1 0 1 1 0 8 0 zombiepl 144 340 0 340 1 0 1 1 0 8 1 processpl 896 373 0 340 4 0 4 4 0 8 0 procpl 632 719 0 672 5 0 5 5 0 8 0 sockpl 384 740 0 718 15 5 10 15 0 8 7 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 153 0 0 19 0 19 19 0 8 0 mtagpl 80 18 0 0 1 0 1 1 0 8 0 mbufpl 256 282 0 0 17 0 17 17 0 8 0 bufpl 256 6857 0 1310 347 0 347 347 0 8 0 anonpl 16 52437 0 32458 84 1 83 83 0 124 2 amapchunkpl 152 2344 0 2185 17 3 14 14 0 158 6 amappl16 192 1804 0 702 57 0 57 57 0 8 1 amappl14 176 115 0 107 1 0 1 1 0 8 0 amappl12 160 13 0 9 1 0 1 1 0 8 0 amappl11 152 119 0 102 1 0 1 1 0 8 0 amappl10 144 16 0 10 1 0 1 1 0 8 0 amappl9 136 602 0 599 1 0 1 1 0 8 0 amappl8 128 176 0 145 2 0 2 2 0 8 0 amappl7 120 40 0 35 1 0 1 1 0 8 0 amappl6 112 118 0 107 1 0 1 1 0 8 0 amappl5 104 132 0 118 1 0 1 1 0 8 0 amappl4 96 554 0 520 1 0 1 1 0 8 0 amappl3 88 248 0 238 1 0 1 1 0 8 0 amappl2 80 1948 0 1869 3 1 2 3 0 8 0 amappl1 72 17691 0 17221 26 16 10 20 0 8 0 amappl 80 972 0 920 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 29 0 0 1 0 1 1 0 8 0 uaddrrnd 24 358 0 340 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 358 0 340 1 0 1 1 0 8 0 vmmpekpl 168 6889 0 6848 3 1 2 2 0 8 0 vmmpepl 168 51358 0 48971 136 14 122 131 0 357 18 vmsppl 368 356 0 340 2 0 2 2 0 8 0 pdppl 4096 723 0 681 6 0 6 6 0 8 0 pvpl 32 173337 0 149941 196 0 196 196 0 265 7 pmappl 232 357 0 340 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 524 0 5 15 0 15 15 0 8 0