uvm_fault(0xffffffff827ed590, 0xffffffff0000000b, 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(0xffffffff827ed590, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021eb5f70, count: 0 ddb{0}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b3b600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af8000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af8000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af8000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021eb6150) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8076640828,7,fffffd807f7bf900,ffff800020e96020) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80681057d0,ffff800020e96020) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80681057d0,ffff800020e96020) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80681057d0,ffff800020e96020) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80681057d0,ffff800020e96020) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e96020) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e96020,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e96020,ffff800021eb63e0,ffff800021eb6430) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021eb64b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021eb64b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed9f0, count: -16 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800021eb5f20 rbx 0 rdx 0 rcx 0 rax 0xffff800020e96020 r8 0xffff800000b3b600 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0xe372893471ceb8c9 r12 0 r13 0x3 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021eb5ec0 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.1) pid=91930 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020e96510,0xffff800020e973f0 process=0xffff800020ea8010 user=0xffff800021eb1000, vmspace=0xfffffd807effe730 estcpu=29, cpticks=1, pctcpu=0.3 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11998 274923 40378 0 2 0 syz-executor.0 11998 30504 40378 0 3 0x4000080 fsleep syz-executor.0 40378 135602 48792 0 2 0x482 syz-executor.0 57913 514683 0 0 3 0x14200 bored sosplice 48792 44484 28916 0 3 0x82 thrsleep syz-fuzzer 48792 182887 28916 0 3 0x4000082 nanosleep syz-fuzzer 48792 411367 28916 0 2 0x4000002 syz-fuzzer 48792 162463 28916 0 3 0x4000082 thrsleep syz-fuzzer 48792 34518 28916 0 3 0x4000082 thrsleep syz-fuzzer 48792 176912 28916 0 2 0x4000002 syz-fuzzer 48792 382401 28916 0 3 0x4000082 thrsleep syz-fuzzer 48792 316562 28916 0 3 0x4000082 thrsleep syz-fuzzer 28916 375604 23869 0 3 0x10008a pause ksh 23869 486855 19978 0 3 0x92 select sshd 74255 6633 1 0 3 0x100083 ttyin getty 19978 103799 1 0 3 0x80 select sshd 31795 223394 61105 74 3 0x100092 bpf pflogd 61105 43596 1 0 3 0x80 netio pflogd 62280 456587 99994 73 3 0x100090 kqread syslogd 99994 2428 1 0 3 0x100082 netio syslogd 31627 504116 1 77 2 0x100090 dhclient 46961 311927 1 0 3 0x80 poll dhclient 66274 60582 0 0 3 0x14200 bored smr 97593 282360 0 0 2 0x14200 zerothread 37615 302823 0 0 3 0x14200 aiodoned aiodoned 14923 286518 0 0 3 0x14200 syncer update 74832 514996 0 0 3 0x14200 cleaner cleaner 21528 301370 0 0 3 0x14200 reaper reaper 7084 287560 0 0 3 0x14200 pgdaemon pagedaemon 58574 419562 0 0 3 0x14200 bored crynlk 47626 503317 0 0 3 0x14200 bored crypto 30200 300920 0 0 3 0x40014200 acpi0 acpi0 33858 472583 0 0 7 0x40014200 idle1 59112 350579 0 0 3 0x14200 bored softnet 16712 211458 0 0 2 0x14200 systqmp 37629 517236 0 0 3 0x14200 bored systq 90862 130463 0 0 3 0x40014200 bored softclock 57302 380853 0 0 3 0x40014200 idle0 1 62038 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 9538 6433K 7312K 78643K 12499 0 pcb 13 8K 8K 78643K 125 0 rtable 88 4K 8K 78643K 575 0 ifaddr 88 16K 18K 78643K 202 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1594 0 iov 0 0K 24K 78643K 83 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1711 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1027 0 sigio 0 0K 0K 78643K 18 0 proc 62 63K 95K 78643K 556 0 subproc 23 1K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 73 0 in_multi 73 3K 3K 78643K 294 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 299 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 200 80K 89K 78643K 3482 0 UVM aobj 47 6K 6K 78643K 51 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 149 0 NDP 15 0K 0K 78643K 59 0 temp 147 3879K 3943K 78643K 24036 0 kqueue 3 4K 14K 78643K 20 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 10 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 51 0 49 1 0 1 1 0 8 0 rtentry 112 142 0 112 2 0 2 2 0 8 0 unpcb 120 379 0 368 2 1 1 2 0 8 0 syncache 272 18 0 18 4 4 0 1 0 8 0 tcpqe 32 40 0 40 5 5 0 1 0 8 0 tcpcb 592 394 0 386 4 3 1 3 0 8 0 inpcb 296 1895 0 1887 2 0 2 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 57 0 55 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 12 0 8 3 2 1 1 0 482 0 pffrnode 88 12 0 8 3 2 1 1 0 8 0 pffrent 40 243 0 239 2 1 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 pfrktable 1344 30 0 28 1 0 1 1 0 8 0 pfstitem 24 28 0 23 1 0 1 1 0 8 0 pfstkey 112 28 0 23 1 0 1 1 0 8 0 pfstate 328 28 0 23 2 0 2 2 0 8 0 pfrule 1360 29 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 926 0 749 22 8 14 17 0 8 0 art_table 32 927 0 749 3 0 3 3 0 8 0 art_node 16 141 0 108 1 0 1 1 0 8 0 sysvmsgpl 40 77 0 37 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 48 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2666 0 1271 89 0 89 89 0 8 0 ffsino 272 2666 0 1271 95 1 94 94 0 8 0 nchpl 144 4588 0 2998 60 0 60 60 0 8 0 uvmvnodes 72 3123 0 0 57 0 57 57 0 8 0 vnodes 208 3123 0 0 165 0 165 165 0 8 0 namei 1024 12390 0 12390 5 4 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 8 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 12270 0 12270 9 8 1 7 0 8 1 plimitpl 152 84 0 76 1 0 1 1 0 8 0 sigapl 424 1240 0 1208 4 0 4 4 0 8 0 futexpl 56 20128 0 20127 4 3 1 1 0 8 0 knotepl 112 94 0 80 1 0 1 1 0 8 0 kqueuepl 152 81 0 79 1 0 1 1 0 8 0 pipepl 304 217 0 209 2 0 2 2 0 8 0 fdescpl 496 1224 0 1208 3 0 3 3 0 8 0 filepl 152 7383 0 7296 7 2 5 6 0 8 1 lockfpl 104 157 0 156 1 0 1 1 0 8 0 lockfspl 48 60 0 59 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 33 0 22 1 0 1 1 0 8 0 ucredpl 96 632 0 623 1 0 1 1 0 8 0 zombiepl 144 1209 0 1208 2 1 1 1 0 8 0 processpl 1008 1240 0 1208 6 1 5 5 0 8 0 procpl 632 2550 0 2510 6 2 4 5 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 16 0 16 4 4 0 1 0 8 0 sockpl 400 2337 0 2317 10 6 4 5 0 8 1 mcl64k 65536 258 0 0 33 5 28 33 0 8 1 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 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 191 0 0 23 1 22 23 0 8 1 mtagpl 96 138 0 0 4 0 4 4 0 8 0 mbufpl 256 737 0 0 44 1 43 44 0 8 0 bufpl 280 4834 0 126 337 0 337 337 0 8 0 anonpl 16 128614 0 109883 131 39 92 93 0 124 14 amapchunkpl 152 5514 0 5222 22 9 13 17 0 158 0 amappl16 192 5799 0 4901 81 28 53 58 0 8 8 amappl15 184 9 0 8 1 0 1 1 0 8 0 amappl14 176 6 0 3 1 0 1 1 0 8 0 amappl13 168 36 0 33 1 0 1 1 0 8 0 amappl12 160 368 0 362 1 0 1 1 0 8 0 amappl11 152 563 0 546 1 0 1 1 0 8 0 amappl10 144 18 0 14 1 0 1 1 0 8 0 amappl9 136 513 0 511 1 0 1 1 0 8 0 amappl8 128 601 0 528 3 0 3 3 0 8 0 amappl7 120 124 0 110 1 0 1 1 0 8 0 amappl6 112 529 0 520 1 0 1 1 0 8 0 amappl5 104 1459 0 1440 1 0 1 1 0 8 0 amappl4 96 509 0 479 1 0 1 1 0 8 0 amappl3 88 156 0 147 1 0 1 1 0 8 0 amappl2 80 8875 0 8797 2 0 2 2 0 8 0 amappl1 72 38013 0 37544 23 13 10 18 0 8 0 amappl 80 2880 0 2797 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 50 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1232 0 1210 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1232 0 1210 1 0 1 1 0 8 0 vmmpekpl 168 11234 0 11197 2 0 2 2 0 8 0 vmmpepl 168 155636 0 153414 174 67 107 130 0 357 9 vmsppl 368 1231 0 1210 4 1 3 3 0 8 1 pdppl 4096 2471 0 2426 7 1 6 6 0 8 0 pvpl 32 391789 0 370144 271 59 212 212 0 265 31 pmappl 232 1231 0 1210 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 347 0 35 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b3b600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af8000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af8000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af8000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021eb6150) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8076640828,7,fffffd807f7bf900,ffff800020e96020) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80681057d0,ffff800020e96020) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80681057d0,ffff800020e96020) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80681057d0,ffff800020e96020) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80681057d0,ffff800020e96020) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e96020) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e96020,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e96020,ffff800021eb63e0,ffff800021eb6430) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021eb64b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021eb64b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed9f0, 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 acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffff800020d70ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5