uvm_fault(0xfffffd806e7cecf8, 0x3fff7ee000b, 0, 1) -> e kernel: page 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 kernel page fault uvm_fault(0xfffffd806e7cecf8, 0x3fff7ee000b, 0, 1) -> e in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:894 end trace frame: 0xffff800020b5cd80, count: 0 ddb{1}> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:894 in_purgeaddr(ffff8000006a9700) at in_purgeaddr+0x156 sys/netinet/in.c:740 in_ifdetach(ffff800000a47000) at in_ifdetach+0x74 sys/netinet/in.c:949 if_detach(ffff800000a47000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a47000) at tun_clone_destroy+0x179 sys/net/if_tun.c:311 spec_close(ffff800020b5cf00) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e192278,7,fffffd807f7c6a80,ffff800020ac0500) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd806cdb04d8,ffff800020ac0500) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cdb04d8,ffff800020ac0500) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd806cdb04d8,ffff800020ac0500) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd806cdb04d8,ffff800020ac0500) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac0500) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac0500,9,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac0500,9) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac0500,9) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac0500) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffc9860, count: -15 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800020b5cd30 rbx 0 rdx 0x8b rcx 0x1 rax 0x1 r8 0xffffffff81fb1e93 rt_ifa_purge+0x153 r9 0x5 r10 0xad4e57ffc2f9beb5 r11 0x6e50e89417581cec r12 0 r13 0x3 r14 0x3fff7edffff r15 0x1 rip 0xffffffff81fd30fd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020b5ccd0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=70376 stat=onproc flags process=a proc=2000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac0778,0xffffffff82637fe8 process=0xffff800020a8aa90 user=0xffff800020b58000, vmspace=0xfffffd806e7cecf8 estcpu=20, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46851 378915 14237 0 3 0x82 thrsleep syz-execprog 46851 160215 14237 0 3 0x4000082 nanosleep syz-execprog 46851 170259 14237 0 3 0x4000082 thrsleep syz-execprog 46851 452463 14237 0 3 0x4000082 thrsleep syz-execprog 46851 268301 14237 0 3 0x4000082 thrsleep syz-execprog 46851 361607 14237 0 7 0x4000002 syz-execprog 46851 492165 14237 0 2 0x4000082 syz-execprog 46851 112757 14237 0 3 0x4000082 thrsleep syz-execprog 14237 39196 38925 0 3 0x10008a pause ksh 38925 262024 66343 0 3 0x92 select sshd 60128 122322 1 0 3 0x100083 ttyin getty 66343 184915 1 0 3 0x80 select sshd 12891 229760 37374 74 3 0x100092 bpf pflogd 37374 111370 1 0 3 0x80 netio pflogd 18498 295635 18420 73 3 0x100090 kqread syslogd 18420 244561 1 0 3 0x100082 netio syslogd 97941 112321 1 77 2 0x100090 dhclient 51124 45756 1 0 3 0x80 poll dhclient 57025 485478 0 0 3 0x14200 pgzero zerothread 87073 31608 0 0 3 0x14200 aiodoned aiodoned 59958 77485 0 0 3 0x14200 syncer update 50778 203128 0 0 3 0x14200 cleaner cleaner 53851 471153 0 0 3 0x14200 reaper reaper 74125 313244 0 0 3 0x14200 pgdaemon pagedaemon 425 271412 0 0 3 0x14200 bored crynlk 53911 480662 0 0 3 0x14200 bored crypto 49438 472735 0 0 3 0x40014200 acpi0 acpi0 704 271004 0 0 3 0x40014200 idle1 88576 58093 0 0 2 0x14200 softnet 70885 20847 0 0 2 0x14200 systqmp 30426 225157 0 0 3 0x14200 bored systq 58187 277104 0 0 3 0x40014200 bored softclock 81335 395222 0 0 3 0x40014200 idle0 60800 222559 0 0 3 0x14200 bored smr 1 250139 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9463 6395K 6395K 78643K 10556 0 0 pcb 13 8K 8K 78643K 17 0 0 rtable 75 2K 2K 78643K 163 0 0 ifaddr 38 9K 10K 78643K 40 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1468 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1181 74K 74K 78643K 1186 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 2 4K 12K 78643K 18 0 0 proc 59 63K 83K 78643K 398 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 28 1K 1K 78643K 29 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 197 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 71 11K 12K 78643K 957 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 7 0K 0K 78643K 7 0 0 temp 35 3542K 3605K 78643K 3299 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 4 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 5 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 39 0 33 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 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 10 0 6 2 1 1 1 0 8 0 pfstkey 112 10 0 6 2 1 1 1 0 8 0 pfstate 328 10 0 6 2 1 1 1 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 256 166 0 0 11 0 11 11 0 8 0 art_table 32 167 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1423 0 20 46 0 46 46 0 8 0 ffsino 272 1423 0 20 94 0 94 94 0 8 0 nchpl 144 1664 0 53 61 1 60 60 0 8 0 uvmvnodes 72 1433 0 0 27 0 27 27 0 8 0 vnodes 208 1433 0 0 76 0 76 76 0 8 0 namei 1024 4163 0 4163 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4254 0 4253 12 11 1 7 0 8 0 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 224 0 211 2 0 2 2 0 8 0 futexpl 56 66 0 66 1 0 1 1 0 8 1 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 6 0 4 1 0 1 1 0 8 0 pipepl 160 152 0 140 2 1 1 1 0 8 0 fdescpl 488 225 0 211 3 0 3 3 0 8 0 filepl 152 1148 0 1091 4 1 3 3 0 8 0 lockfpl 104 8 0 7 1 0 1 1 0 8 0 lockfspl 48 4 0 3 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 212 0 211 2 1 1 1 0 8 0 processpl 896 240 0 211 4 0 4 4 0 8 0 procpl 632 252 0 216 4 0 4 4 0 8 1 srpgc 64 2 0 0 1 0 1 1 0 8 0 sockpl 384 85 0 67 4 1 3 3 0 8 1 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 80 2 0 0 1 0 1 1 0 8 0 mbufpl 256 94 0 0 5 0 5 5 0 8 0 bufpl 256 5888 0 1310 287 0 287 287 0 8 0 anonpl 16 22629 0 20569 16 1 15 15 0 124 6 amapchunkpl 152 739 0 674 5 0 5 5 0 158 1 amappl16 192 198 0 139 4 0 4 4 0 8 0 amappl14 176 51 0 44 1 0 1 1 0 8 0 amappl12 160 4 0 4 1 1 0 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 14 0 11 1 0 1 1 0 8 0 amappl9 136 435 0 433 1 0 1 1 0 8 0 amappl8 128 130 0 118 1 0 1 1 0 8 0 amappl7 120 36 0 31 1 0 1 1 0 8 0 amappl6 112 60 0 52 1 0 1 1 0 8 0 amappl5 104 126 0 112 1 0 1 1 0 8 0 amappl4 96 490 0 463 1 0 1 1 0 8 0 amappl3 88 117 0 112 1 0 1 1 0 8 0 amappl2 80 945 0 887 3 0 3 3 0 8 1 amappl1 72 15304 0 14892 25 7 18 20 0 8 8 amappl 80 483 0 455 1 0 1 1 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 225 0 211 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 225 0 211 1 0 1 1 0 8 0 vmmpekpl 168 6418 0 6392 2 0 2 2 0 8 0 vmmpepl 168 32719 0 31778 94 13 81 81 0 357 39 vmsppl 368 224 0 211 2 0 2 2 0 8 0 pdppl 4096 457 0 422 6 0 6 6 0 8 0 pvpl 32 113222 0 108740 124 5 119 119 0 265 81 pmappl 232 224 0 211 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 424 0 4 12 0 12 12 0 8 0