uvm_fault(0xfffffd806e902a18, 0xb, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd806e902a18, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021f0e170, count: 0 ddb{0}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b19a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f0e350) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e22e5b8,7,fffffd807f7bf900,ffff800020e973d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80679f2dc0,ffff800020e973d8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80679f2dc0,ffff800020e973d8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80679f2dc0,ffff800020e973d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80679f2dc0,ffff800020e973d8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e973d8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e973d8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e973d8,ffff800021f0e5e0,ffff800021f0e630) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021f0e6b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0e6b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbf90, count: -16 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800021f0e120 rbx 0 rdx 0 rcx 0 rax 0xffff800020e973d8 r8 0xffff800000b19a00 r9 0xffffffff8158de33 rt_ifa_purge+0x153 r10 0x5 r11 0xe57a6b6f9feec81e r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff8120951d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f0e0c0 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=458422 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020e96018,0xffffffff828c6de0 process=0xffff800020ebf3b8 user=0xffff800021f09000, vmspace=0xfffffd806e902a18 estcpu=29, cpticks=2, pctcpu=0.2 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13711 149829 0 0 3 0x14200 bored sosplice 43510 132158 74975 0 3 0x82 piperd syz-executor.1 74975 509200 56962 0 3 0x82 thrsleep syz-fuzzer 74975 315494 56962 0 3 0x4000082 nanosleep syz-fuzzer 74975 33424 56962 0 3 0x4000082 kqread syz-fuzzer 74975 95389 56962 0 7 0x4000002 syz-fuzzer 74975 340054 56962 0 3 0x4000082 thrsleep syz-fuzzer 74975 88446 56962 0 2 0x4000002 syz-fuzzer 74975 397219 56962 0 3 0x4000082 thrsleep syz-fuzzer 74975 182454 56962 0 3 0x4000082 thrsleep syz-fuzzer 56962 66026 67912 0 3 0x10008a pause ksh 67912 269114 63999 0 3 0x92 select sshd 52508 141228 1 0 3 0x100083 ttyin getty 63999 193671 1 0 3 0x80 select sshd 5678 21454 4601 74 3 0x100092 bpf pflogd 4601 48059 1 0 3 0x80 netio pflogd 2087 210524 88207 73 3 0x100090 kqread syslogd 88207 59568 1 0 3 0x100082 netio syslogd 64457 187904 1 77 3 0x100090 poll dhclient 99844 478899 1 0 3 0x80 poll dhclient 44810 178801 0 0 3 0x14200 bored smr 65212 378170 0 0 3 0x14200 pgzero zerothread 24292 311992 0 0 3 0x14200 aiodoned aiodoned 87547 509722 0 0 3 0x14200 syncer update 20323 204525 0 0 3 0x14200 cleaner cleaner 53773 32638 0 0 3 0x14200 reaper reaper 16533 497249 0 0 3 0x14200 pgdaemon pagedaemon 29013 491401 0 0 3 0x14200 bored crynlk 73511 260595 0 0 3 0x14200 bored crypto 61741 306252 0 0 3 0x40014200 acpi0 acpi0 66382 79818 0 0 3 0x40014200 idle1 80251 255850 0 0 3 0x14200 bored softnet 77833 455726 0 0 3 0x14200 bored systqmp 86490 433318 0 0 3 0x14200 bored systq 4838 173036 0 0 3 0x40014200 bored softclock 83718 270296 0 0 3 0x40014200 idle0 1 181572 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9509 6427K 7248K 78643K 11756 0 pcb 13 8K 8K 78643K 79 0 rtable 124 4K 9K 78643K 371 0 ifaddr 73 14K 15K 78643K 119 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 1504 0 iov 0 0K 16K 78643K 34 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1512 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 152 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 373 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 475 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 261 0 in_multi 57 3K 3K 78643K 80 0 ether_multi 1 0K 0K 78643K 7 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 237 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 156 43K 43K 78643K 2175 0 UVM aobj 16 2K 2K 78643K 18 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 46 0 NDP 11 0K 0K 78643K 19 0 temp 104 3866K 3930K 78643K 4222 0 kqueue 3 4K 6K 78643K 6 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 9 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 44 0 42 1 0 1 1 0 8 0 rtentry 112 63 0 12 2 0 2 2 0 8 0 unpcb 120 223 0 213 1 0 1 1 0 8 0 syncache 272 5 0 5 2 2 0 1 0 8 0 tcpqe 32 116 0 116 1 1 0 1 0 8 0 tcpcb 592 188 0 184 3 1 2 3 0 8 1 inpcb 296 711 0 704 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 17 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 4 0 4 1 1 0 1 0 482 0 pffrnode 88 4 0 4 1 1 0 1 0 8 0 pffrent 40 12 0 12 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 pfrktable 1344 38 0 36 1 0 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 60 0 13 1 0 1 1 0 8 0 pfstkey 112 60 0 13 2 0 2 2 0 8 0 pfstate 328 60 0 13 5 0 5 5 0 8 0 pfrule 1360 26 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 319 0 60 18 0 18 18 0 8 1 art_table 32 320 0 60 3 0 3 3 0 8 0 art_node 16 62 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 25 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 149 0 139 1 0 1 1 0 8 0 shmpl 112 15 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1857 0 455 89 0 89 89 0 8 0 ffsino 272 1857 0 455 94 0 94 94 0 8 0 nchpl 144 2583 0 997 60 0 60 60 0 8 0 uvmvnodes 72 2156 0 0 40 0 40 40 0 8 0 vnodes 208 2156 0 0 114 0 114 114 0 8 0 namei 1024 7008 0 7008 1 0 1 1 0 8 1 percpumem 16 35 0 3 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 11 0 10 1 0 1 1 0 8 0 scxspl 200 7685 0 7685 8 7 1 7 0 8 1 plimitpl 152 31 0 23 1 0 1 1 0 8 0 sigapl 424 589 0 558 4 0 4 4 0 8 0 futexpl 56 5154 0 5154 1 0 1 1 0 8 1 knotepl 112 67 0 53 1 0 1 1 0 8 0 kqueuepl 152 34 0 32 1 0 1 1 0 8 0 pipepl 304 121 0 113 3 1 2 2 0 8 1 fdescpl 496 573 0 558 3 0 3 3 0 8 0 filepl 152 3351 0 3264 5 0 5 5 0 8 1 lockfpl 104 60 0 59 1 0 1 1 0 8 0 lockfspl 48 26 0 25 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 297 0 287 1 0 1 1 0 8 0 zombiepl 144 559 0 558 1 0 1 1 0 8 0 processpl 1008 589 0 558 5 0 5 5 0 8 0 procpl 632 1356 0 1318 4 0 4 4 0 8 0 sosppl 144 8 0 8 2 1 1 1 0 8 1 sockpl 400 982 0 963 4 1 3 4 0 8 1 mcl64k 65536 6 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 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 305 0 0 38 0 38 38 0 8 0 mtagpl 96 167 0 0 5 0 5 5 0 8 0 mbufpl 256 474 0 0 29 0 29 29 0 8 0 bufpl 280 4073 0 126 282 0 282 282 0 8 0 anonpl 16 71096 0 52264 93 1 92 92 0 124 11 amapchunkpl 152 3324 0 3000 20 6 14 20 0 158 0 amappl16 192 2677 0 1791 55 2 53 55 0 8 8 amappl15 184 10 0 8 1 0 1 1 0 8 0 amappl14 176 182 0 181 2 1 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 20 0 17 1 0 1 1 0 8 0 amappl11 152 56 0 40 1 0 1 1 0 8 0 amappl10 144 16 0 13 1 0 1 1 0 8 0 amappl9 136 533 0 529 1 0 1 1 0 8 0 amappl8 128 500 0 465 2 0 2 2 0 8 0 amappl7 120 116 0 103 1 0 1 1 0 8 0 amappl6 112 31 0 25 1 0 1 1 0 8 0 amappl5 104 476 0 459 1 0 1 1 0 8 0 amappl4 96 486 0 458 1 0 1 1 0 8 0 amappl3 88 300 0 290 1 0 1 1 0 8 0 amappl2 80 3649 0 3582 2 0 2 2 0 8 0 amappl1 72 25634 0 25185 24 14 10 18 0 8 0 amappl 80 1656 0 1573 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 17 0 2 1 0 1 1 0 8 0 uaddrrnd 24 577 0 558 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 577 0 558 1 0 1 1 0 8 0 vmmpekpl 168 8287 0 8247 3 0 3 3 0 8 0 vmmpepl 168 79560 0 77492 125 15 110 110 0 357 12 vmsppl 368 576 0 558 2 0 2 2 0 8 0 pdppl 4096 1161 0 1120 6 0 6 6 0 8 0 pvpl 32 226579 0 205149 215 1 214 214 0 265 35 pmappl 232 576 0 558 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 295 0 6 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b19a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f0e350) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e22e5b8,7,fffffd807f7bf900,ffff800020e973d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80679f2dc0,ffff800020e973d8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80679f2dc0,ffff800020e973d8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80679f2dc0,ffff800020e973d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80679f2dc0,ffff800020e973d8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e973d8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e973d8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e973d8,ffff800021f0e5e0,ffff800021f0e630) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021f0e6b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0e6b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbf90, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0xc000047f20, count: -3