uvm_fault(0xffffffff827c3248, 0xffffffff0000000b, 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(0xffffffff827c3248, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff8000218dd5b0, count: 0 ddb{1}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9100) 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(ffff8000218dd790) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e66e688,7,fffffd807f7bf8a0,ffff800020eb5b48) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8079f7ced8,ffff800020eb5b48) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8079f7ced8,ffff800020eb5b48) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8079f7ced8,ffff800020eb5b48) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8079f7ced8,ffff800020eb5b48) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb5b48) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb5b48,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb5b48,ffff8000218dda20,ffff8000218dda70) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000218ddaf0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000218ddaf0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcf8f0, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff8000218dd560 rbx 0 rdx 0 rcx 0 rax 0xffff800020eb5b48 r8 0xffff800000af9100 r9 0xffffffff8158de33 rt_ifa_purge+0x153 r10 0x5 r11 0x432a79a8fd379411 r12 0 r13 0x3 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff8120951d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000218dd500 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=181468 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020eb5658,0xffff800020eb4c88 process=0xffff800021f6c3f8 user=0xffff8000218d8000, vmspace=0xfffffd806634de70 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76112 94131 9090 0 2 0 syz-executor.1 76112 35674 9090 0 2 0x4000000 syz-executor.1 9090 96348 38768 0 2 0x2 syz-executor.1 92753 68035 0 0 3 0x14280 nfsidl nfsio 76218 359965 0 0 3 0x14280 nfsidl nfsio 22970 478553 0 0 3 0x14280 nfsidl nfsio 48157 12595 0 0 3 0x14280 nfsidl nfsio 44767 130060 0 0 3 0x14280 nfsidl nfsio 47976 149954 0 0 3 0x14280 nfsidl nfsio 33420 16983 0 0 3 0x14280 nfsidl nfsio 43745 199621 0 0 3 0x14280 nfsidl nfsio 49361 373937 0 0 3 0x14280 nfsidl nfsio 22581 74581 0 0 3 0x14280 nfsidl nfsio 93893 76294 0 0 3 0x14280 nfsidl nfsio 24535 86467 0 0 3 0x14280 nfsidl nfsio 61567 288260 0 0 3 0x14280 nfsidl nfsio 7858 133095 0 0 3 0x14280 nfsidl nfsio 94474 192750 0 0 3 0x14280 nfsidl nfsio 53748 123209 0 0 3 0x14280 nfsidl nfsio 80719 19102 0 0 3 0x14280 nfsidl nfsio 6161 336982 0 0 3 0x14280 nfsidl nfsio 20478 289181 0 0 3 0x14280 nfsidl nfsio 91129 125171 0 0 3 0x14280 nfsidl nfsio 24821 277308 0 0 3 0x14200 bored sosplice 38768 330353 47991 0 3 0x82 thrsleep syz-fuzzer 38768 382154 47991 0 3 0x4000082 nanosleep syz-fuzzer 38768 334517 47991 0 3 0x4000082 kqread syz-fuzzer 38768 171916 47991 0 3 0x4000082 thrsleep syz-fuzzer 38768 521855 47991 0 3 0x4000082 thrsleep syz-fuzzer 38768 183974 47991 0 3 0x4000082 thrsleep syz-fuzzer 38768 338585 47991 0 3 0x4000082 thrsleep syz-fuzzer 38768 269741 47991 0 2 0x4000002 syz-fuzzer 47991 3141 21222 0 3 0x10008a pause ksh 21222 218149 25580 0 3 0x92 select sshd 57951 168897 1 0 3 0x100083 ttyin getty 25580 191213 1 0 3 0x80 select sshd 43186 379150 23662 74 3 0x100092 bpf pflogd 23662 150616 1 0 3 0x80 netio pflogd 67988 151235 11022 73 3 0x100090 kqread syslogd 11022 282032 1 0 3 0x100082 netio syslogd 64937 48739 1 77 2 0x100090 dhclient 57679 448696 1 0 3 0x80 poll dhclient 83890 491691 0 0 3 0x14200 bored smr 91226 331340 0 0 2 0x14200 zerothread 99073 6712 0 0 3 0x14200 aiodoned aiodoned 15728 301771 0 0 3 0x14200 syncer update 79387 12953 0 0 3 0x14200 cleaner cleaner 60931 260081 0 0 3 0x14200 reaper reaper 1380 148269 0 0 3 0x14200 pgdaemon pagedaemon 31760 135599 0 0 3 0x14200 bored crynlk 95085 498514 0 0 3 0x14200 bored crypto 34939 408271 0 0 3 0x40014200 acpi0 acpi0 98281 353853 0 0 3 0x40014200 idle1 10903 299096 0 0 3 0x14200 bored softnet 76875 252070 0 0 2 0x14200 systqmp 87753 100600 0 0 3 0x14200 bored systq 80544 261817 0 0 7 0x40014200 softclock 5859 480889 0 0 3 0x40014200 idle0 1 498728 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 devbuf 9515 6414K 7190K 78643K 13894 0 pcb 13 8K 8K 78643K 100 0 rtable 123 14K 15K 78643K 634 0 ifaddr 93 19K 20K 78643K 215 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 73 0 ioctlops 0 0K 4K 78643K 1646 0 iov 0 0K 16K 78643K 642 0 mount 1 1K 1K 78643K 1 0 vnodes 1229 77K 78K 78643K 2097 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 207 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 923 0 sigio 0 0K 0K 78643K 10 0 proc 61 63K 95K 78643K 564 0 subproc 23 1K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 65 0 in_multi 60 3K 3K 78643K 154 0 ether_multi 1 0K 0K 78643K 9 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 272 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 215 128K 143K 78643K 3999 0 UVM aobj 32 7K 7K 78643K 32 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 77 0 NDP 12 0K 0K 78643K 38 0 temp 130 3871K 3935K 78643K 6809 0 kqueue 3 4K 12K 78643K 25 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 12 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 66 0 64 1 0 1 1 0 8 0 rtentry 112 94 0 66 2 0 2 2 0 8 0 unpcb 120 317 0 306 1 0 1 1 0 8 0 syncache 272 11 0 11 4 3 1 1 0 8 1 tcpqe 32 779 0 779 3 2 1 1 0 8 1 tcpcb 592 246 0 229 5 3 2 2 0 8 0 inpcb 296 802 0 794 5 3 2 2 0 8 1 nd6 48 22 0 18 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 5 0 5 3 3 0 1 0 482 0 pffrnode 88 5 0 5 3 3 0 1 0 8 0 pffrent 40 183 0 183 3 3 0 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 80 0 58 4 2 2 2 0 8 0 pfstitem 24 15 0 13 1 0 1 1 0 8 0 pfstkey 112 15 0 13 1 0 1 1 0 8 0 pfstate 328 14 0 12 2 0 2 2 0 8 1 pfrule 1360 48 0 31 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 392 0 250 14 3 11 13 0 8 0 art_table 32 393 0 250 2 0 2 2 0 8 0 art_node 16 87 0 62 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 18 1 0 1 1 0 8 0 semapl 112 205 0 195 1 0 1 1 0 8 0 shmpl 112 29 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2516 0 1114 89 1 88 89 0 8 0 ffsino 272 2516 0 1114 95 1 94 94 0 8 0 nchpl 144 4403 0 2814 60 0 60 60 0 8 0 uvmvnodes 72 3356 0 0 62 0 62 62 0 8 0 vnodes 208 3356 0 0 177 0 177 177 0 8 0 namei 1024 12100 0 12100 5 4 1 1 0 8 1 percpumem 16 47 0 15 1 0 1 1 0 8 0 vcpupl 1984 12 0 1 2 0 2 2 0 8 0 vmpool 560 13 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 35 0 11 2 1 1 1 0 8 0 scxspl 200 11964 0 11964 13 10 3 7 0 8 3 plimitpl 152 67 0 59 1 0 1 1 0 8 0 sigapl 424 1153 0 1101 6 0 6 6 0 8 0 futexpl 56 13277 0 13277 4 3 1 1 0 8 1 knotepl 112 110 0 96 1 0 1 1 0 8 0 kqueuepl 152 89 0 86 1 0 1 1 0 8 0 pipepl 304 192 0 184 3 1 2 2 0 8 1 fdescpl 496 1117 0 1101 3 0 3 3 0 8 0 filepl 152 6432 0 6345 7 2 5 6 0 8 0 lockfpl 104 203 0 202 1 0 1 1 0 8 0 lockfspl 48 68 0 67 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 692 0 683 1 0 1 1 0 8 0 zombiepl 144 1102 0 1101 3 2 1 1 0 8 0 processpl 1008 1153 0 1101 8 1 7 7 0 8 0 procpl 632 3014 0 2954 7 1 6 6 0 8 1 sosppl 144 14 0 14 4 3 1 1 0 8 1 sockpl 400 1193 0 1172 9 5 4 5 0 8 1 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 189 0 0 23 0 23 23 0 8 0 mtagpl 96 230 0 0 6 0 6 6 0 8 0 mbufpl 256 835 0 0 50 0 50 50 0 8 0 bufpl 280 5388 0 130 376 0 376 376 0 8 0 anonpl 16 124889 0 107398 90 14 76 83 0 124 0 amapchunkpl 152 7946 0 7622 39 17 22 27 0 158 6 amappl16 192 4335 0 3484 45 1 44 44 0 8 1 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 429 0 424 1 0 1 1 0 8 0 amappl13 168 42 0 39 1 0 1 1 0 8 0 amappl12 160 27 0 24 1 0 1 1 0 8 0 amappl11 152 484 0 467 1 0 1 1 0 8 0 amappl10 144 18 0 14 1 0 1 1 0 8 0 amappl9 136 798 0 796 1 0 1 1 0 8 0 amappl8 128 464 0 388 3 0 3 3 0 8 0 amappl7 120 130 0 118 1 0 1 1 0 8 0 amappl6 112 314 0 300 1 0 1 1 0 8 0 amappl5 104 590 0 574 1 0 1 1 0 8 0 amappl4 96 955 0 918 1 0 1 1 0 8 0 amappl3 88 314 0 306 1 0 1 1 0 8 0 amappl2 80 7841 0 7759 2 0 2 2 0 8 0 amappl1 72 42755 0 42274 23 13 10 18 0 8 0 amappl 80 3360 0 3262 3 0 3 3 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 31 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1130 0 1103 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1130 0 1103 1 0 1 1 0 8 0 vmmpekpl 168 11260 0 11215 3 0 3 3 0 8 0 vmmpepl 168 149718 0 147513 185 54 131 131 0 357 32 vmsppl 368 1129 0 1103 3 0 3 3 0 8 0 pdppl 4096 2267 0 2217 8 1 7 7 0 8 0 pvpl 32 381044 0 360278 209 29 180 198 0 265 2 pmappl 232 1129 0 1103 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 315 0 21 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82738ff0) 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 __mp_lock(ffffffff8293cd60) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8293cd60) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8293cd60,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020d970f8,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 softclock_thread(ffff800020d88ed0) at softclock_thread+0x103 sys/kern/kern_timeout.c:601 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9100) 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(ffff8000218dd790) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e66e688,7,fffffd807f7bf8a0,ffff800020eb5b48) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8079f7ced8,ffff800020eb5b48) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8079f7ced8,ffff800020eb5b48) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8079f7ced8,ffff800020eb5b48) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8079f7ced8,ffff800020eb5b48) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb5b48) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb5b48,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb5b48,ffff8000218dda20,ffff8000218dda70) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000218ddaf0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000218ddaf0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcf8f0, count: -16