kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace in_delmulti(bffffffffff7ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff8000006a9600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a14000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000a14000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a14000) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800022194c00) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e3ee1a8,7,fffffd807f7c6a20,ffff800020ac13d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8065464dc0,ffff800020ac13d8) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8065464dc0,ffff800020ac13d8) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd8065464dc0,ffff800020ac13d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8065464dc0,ffff800020ac13d8) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac13d8) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac13d8,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac13d8,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac13d8,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac13d8) at userret+0x199 sys/kern/kern_sig.c:1889 syscall(ffff800022195080) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800022195080) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbf0b0, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800022194a30 rbx 0 rdx 0xffff800020ac13d8 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0xe4e516a3593b396 r12 0 r13 0x3 r14 0xbffffffffff7ffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000221949d0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=417713 stat=onproc flags process=a proc=2000 pri=17, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac1650,0xffff800020ac0790 process=0xffff800020aed180 user=0xffff800022190000, vmspace=0xfffffd807f008730 estcpu=36, cpticks=2, pctcpu=0.2 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33293 311403 0 0 3 0x14200 bored sosplice 11402 32184 50627 0 3 0x2 biowait syz-executor.0 50627 426399 38905 0 3 0x82 thrsleep syz-fuzzer 50627 523612 38905 0 3 0x4000082 nanosleep syz-fuzzer 50627 403186 38905 0 3 0x4000082 thrsleep syz-fuzzer 50627 274486 38905 0 3 0x4000082 thrsleep syz-fuzzer 50627 316098 38905 0 2 0x4000082 syz-fuzzer 50627 55759 38905 0 3 0x4000082 thrsleep syz-fuzzer 50627 208249 38905 0 3 0x4000082 thrsleep syz-fuzzer 50627 343545 38905 0 3 0x4000082 nanosleep syz-fuzzer 50627 33535 38905 0 3 0x4000082 thrsleep syz-fuzzer 50627 87773 38905 0 3 0x4000082 thrsleep syz-fuzzer 38905 454366 62019 0 3 0x10008a pause ksh 62019 454998 15519 0 3 0x92 select sshd 90773 428208 1 0 3 0x100083 ttyin getty 15519 37811 1 0 3 0x80 select sshd 60088 118482 48642 74 3 0x100092 bpf pflogd 48642 421742 1 0 3 0x80 netio pflogd 51932 292872 43380 73 3 0x100090 kqread syslogd 43380 92685 1 0 3 0x100082 netio syslogd 72480 101646 1 77 2 0x100090 dhclient 36281 322371 1 0 3 0x80 poll dhclient 71374 271230 0 0 2 0x14200 zerothread 47041 263517 0 0 3 0x14200 aiodoned aiodoned 50098 323210 0 0 3 0x14200 syncer update 64461 523301 0 0 3 0x14200 cleaner cleaner 40350 352643 0 0 3 0x14200 reaper reaper 1096 221125 0 0 3 0x14200 pgdaemon pagedaemon 48065 32565 0 0 3 0x14200 bored crynlk 81252 33836 0 0 3 0x14200 bored crypto 39736 215102 0 0 3 0x40014200 acpi0 acpi0 47482 143843 0 0 3 0x40014200 idle1 68242 76096 0 0 2 0x14200 softnet 78749 133065 0 0 2 0x14200 systqmp 2376 394777 0 0 3 0x14200 bored systq 31488 380731 0 0 3 0x40014200 bored softclock 89590 214362 0 0 7 0x40014200 idle0 58341 444855 0 0 3 0x14200 bored smr 1 19556 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 11402 (syz-executor.0) thread 0xffff800020ac1650 (32184) exclusive rrwlock inode r = 0 (0xfffffd8064449e70) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1164 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:2974 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ace62b8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453 #3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:571 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:2959 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9498 6529K 7237K 78643K 11068 0 pcb 13 8K 8K 78643K 49 0 rtable 101 4K 4K 78643K 278 0 ifaddr 56 12K 12K 78643K 98 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1492 0 iov 0 0K 16K 78643K 31 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1362 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 50 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 4 9K 25K 78643K 187 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 83K 78643K 450 0 subproc 23 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2 0 in_multi 45 2K 2K 78643K 57 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 48 212K 212K 78643K 48 0 exec 0 0K 1K 78643K 217 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 126 55K 55K 78643K 1614 0 UVM aobj 14 2K 2K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 30 0 NDP 8 0K 0K 78643K 20 0 temp 102 3014K 3080K 78643K 10993 0 kqueue 0 0K 0K 78643K 2 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 25 0 23 1 0 1 1 0 8 0 rtentry 112 51 0 12 2 0 2 2 0 8 0 unpcb 120 117 0 106 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 313 0 313 1 1 0 1 0 8 0 tcpcb 544 208 0 204 3 1 2 2 0 8 1 inpcb 280 369 0 362 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 5 0 2 1 0 1 1 0 8 0 ppxss 1128 4 0 4 1 0 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 23 0 5 1 0 1 1 0 8 0 pfstkey 112 23 0 5 1 0 1 1 0 8 0 pfstate 328 23 0 5 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 256 236 0 39 14 0 14 14 0 8 0 art_table 32 237 0 39 2 0 2 2 0 8 0 art_node 16 50 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 28 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1685 0 281 46 0 46 46 0 8 0 ffsino 272 1685 0 281 95 0 95 95 0 8 0 nchpl 144 2135 0 520 61 0 61 61 0 8 0 uvmvnodes 72 1832 0 0 34 0 34 34 0 8 0 vnodes 208 1832 0 0 97 0 97 97 0 8 0 namei 1024 5815 0 5814 1 0 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 1 2 1 1 1 0 8 0 scxspl 192 6194 0 6193 8 5 3 5 0 8 2 plimitpl 152 29 0 21 1 0 1 1 0 8 0 sigapl 432 386 0 372 3 1 2 3 0 8 0 futexpl 56 3285 0 3285 1 0 1 1 0 8 1 knotepl 112 113 0 94 1 0 1 1 0 8 0 kqueuepl 104 122 0 120 1 0 1 1 0 8 0 pipepl 160 272 0 254 3 1 2 2 0 8 1 fdescpl 488 387 0 372 3 0 3 3 0 8 0 filepl 152 2560 0 2470 6 0 6 6 0 8 2 lockfpl 104 61 0 60 1 0 1 1 0 8 0 lockfspl 48 22 0 21 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 231 0 222 1 0 1 1 0 8 0 zombiepl 144 373 0 372 1 0 1 1 0 8 0 processpl 896 403 0 372 4 0 4 4 0 8 0 procpl 632 822 0 782 5 0 5 5 0 8 1 sosppl 128 5 0 5 1 0 1 1 0 8 1 sockpl 384 511 0 491 5 1 4 4 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 283 0 0 35 0 35 35 0 8 0 mtagpl 80 8 0 0 1 0 1 1 0 8 0 mbufpl 256 287 0 0 17 0 17 17 0 8 0 bufpl 280 8785 0 1715 506 0 506 506 0 8 0 anonpl 16 60868 0 40450 107 8 99 99 0 125 16 amapchunkpl 152 1975 0 1800 10 1 9 9 0 158 1 amappl16 192 2260 0 1150 76 12 64 68 0 8 8 amappl15 184 74 0 69 1 0 1 1 0 8 0 amappl14 176 32 0 29 1 0 1 1 0 8 0 amappl13 168 2 0 1 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 54 0 38 1 0 1 1 0 8 0 amappl10 144 165 0 158 1 0 1 1 0 8 0 amappl9 136 604 0 600 1 0 1 1 0 8 0 amappl8 128 132 0 102 2 0 2 2 0 8 0 amappl7 120 258 0 244 1 0 1 1 0 8 0 amappl6 112 59 0 52 1 0 1 1 0 8 0 amappl5 104 130 0 116 1 0 1 1 0 8 0 amappl4 96 635 0 605 1 0 1 1 0 8 0 amappl3 88 123 0 115 1 0 1 1 0 8 0 amappl2 80 2142 0 2076 3 1 2 3 0 8 0 amappl1 72 18427 0 17991 27 17 10 21 0 8 0 amappl 80 1081 0 1030 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 393 0 373 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 393 0 373 1 0 1 1 0 8 0 vmmpekpl 168 7085 0 7047 2 0 2 2 0 8 0 vmmpepl 168 56211 0 54003 143 25 118 134 0 357 11 vmsppl 368 392 0 373 2 0 2 2 0 8 0 pdppl 4096 793 0 751 6 0 6 6 0 8 0 pvpl 32 184203 0 160947 239 7 232 232 0 265 42 pmappl 232 392 0 373 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 185 0 4 6 0 6 6 0 8 0