uvm_fault(0xfffffd8059a20de0, 0x3fff7ee0007, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd8059a20de0, 0x3fff7ee0007, 0, 1) -> e in_delmulti(3fff7edfffb) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7b7040, count: 0 ddb> trace in_delmulti(3fff7edfffb) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aedb00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001e7b7220) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8067dce5b0,7,fffffd806c3bf9c0,ffff80001d6c3128) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805717dda8,ffff80001d6c3128) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805717dda8,ffff80001d6c3128) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805717dda8,ffff80001d6c3128) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805717dda8,ffff80001d6c3128) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6c3128) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6c3128,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6c3128,ffff80001e7b74b0,ffff80001e7b7500) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e7b7580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8670, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e7b6ff0 rbx 0x8 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x8532b3033bc02bb r11 0x281075f4428be882 r12 0 r13 0x3 r14 0x3fff7edfffb r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b6f90 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=348045 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c24f8,0xffff80001d6c3af8 process=0xffff80001d6c55d0 user=0xffff80001e7b2000, vmspace=0xfffffd8059a20de0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45377 302338 39773 0 2 0 syz-executor.1 45377 178519 39773 0 3 0x4000000 biowait syz-executor.1 90270 141067 0 0 3 0x14200 bored sosplice 73676 432866 0 0 3 0x14200 acct acct 32838 265188 1 0 3 0x100083 ttyin getty 39773 233328 52951 0 3 0x82 nanosleep syz-executor.1 52951 267616 30638 0 3 0x82 thrsleep syz-fuzzer 52951 478524 30638 0 3 0x4000082 nanosleep syz-fuzzer 52951 335534 30638 0 3 0x4000082 thrsleep syz-fuzzer 52951 233110 30638 0 3 0x4000082 thrsleep syz-fuzzer 52951 54113 30638 0 3 0x4000082 thrsleep syz-fuzzer 52951 518903 30638 0 3 0x4000082 thrsleep syz-fuzzer 52951 194207 30638 0 3 0x4000082 thrsleep syz-fuzzer 52951 475628 30638 0 2 0x4000002 syz-fuzzer 30638 423541 1236 0 3 0x10008a pause ksh 1236 305040 70771 0 3 0x92 select sshd 70771 234957 1 0 3 0x80 select sshd 29170 178802 18287 73 3 0x100090 kqread syslogd 18287 448824 1 0 3 0x100082 netio syslogd 97891 344675 1 77 3 0x100090 poll dhclient 14993 484937 1 0 3 0x80 poll dhclient 9886 480724 0 0 3 0x14200 bored smr 81594 8830 0 0 2 0x14200 zerothread 95015 422256 0 0 3 0x14200 aiodoned aiodoned 74743 221730 0 0 3 0x14200 syncer update 61772 118298 0 0 3 0x14200 cleaner cleaner 43460 80133 0 0 3 0x14200 reaper reaper 70637 83869 0 0 3 0x14200 pgdaemon pagedaemon 62360 19241 0 0 3 0x14200 bored crynlk 70768 436143 0 0 3 0x14200 bored crypto 16184 28590 0 0 3 0x40014200 acpi0 acpi0 26646 40794 0 0 3 0x14200 bored softnet 78774 316446 0 0 2 0x14200 systqmp 28120 134845 0 0 3 0x14200 bored systq 45737 65584 0 0 3 0x40014200 bored softclock 76140 169053 0 0 3 0x40014200 idle0 1 166807 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9465 6337K 6790K 78643K 10893 0 pcb 13 8K 8K 78643K 55 0 rtable 122 8K 9K 78643K 357 0 ifaddr 60 14K 14K 78643K 98 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 67 0 iov 1 12K 16K 78643K 31 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1322 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 72 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 314 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 54K 78643K 399 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 30 0 in_multi 46 2K 2K 78643K 98 0 ether_multi 1 0K 0K 78643K 5 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 210 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 138 56K 56K 78643K 1633 0 UVM aobj 12 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 28 0 NDP 7 0K 0K 78643K 23 0 temp 94 3858K 3922K 78643K 2969 0 kqueue 3 4K 9K 78643K 24 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 2 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 67 0 26 2 0 2 2 0 8 0 unpcb 120 67 0 59 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 60 0 60 1 1 0 1 0 8 0 tcpcb 544 95 0 91 2 1 1 2 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 296 266 0 259 4 3 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 15 0 9 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 pfrke_plain 160 5 0 3 1 0 1 1 0 8 0 pfrktable 1344 40 0 30 3 2 1 2 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstkey 112 1 0 1 1 1 0 1 0 8 0 pfstate 328 1 0 1 1 1 0 1 0 8 0 pfrule 1360 16 0 8 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 301 0 88 14 0 14 14 0 8 0 art_table 32 303 0 88 2 0 2 2 0 8 0 art_node 16 66 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 2 1 0 1 1 0 8 0 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 15 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1793 0 392 89 0 89 89 0 8 0 ffsino 240 1793 0 392 83 0 83 83 0 8 0 nchpl 144 2542 0 967 60 0 60 60 0 8 0 rtmask 32 10 0 8 1 0 1 1 0 8 0 uvmvnodes 72 1907 0 0 35 0 35 35 0 8 0 vnodes 208 1907 0 0 101 0 101 101 0 8 0 namei 1024 6889 0 6889 2 1 1 1 0 8 1 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 528 5 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 18 0 6 1 0 1 1 0 8 0 scxspl 192 7510 0 7509 1 0 1 1 0 8 0 plimitpl 152 38 0 31 1 0 1 1 0 8 0 sigapl 424 503 0 473 4 0 4 4 0 8 0 futexpl 56 5855 0 5855 2 1 1 1 0 8 1 knotepl 112 81 0 68 1 0 1 1 0 8 0 kqueuepl 144 38 0 36 1 0 1 1 0 8 0 pipepl 272 112 0 105 1 0 1 1 0 8 0 fdescpl 432 487 0 473 2 0 2 2 0 8 0 filepl 120 2964 0 2881 4 0 4 4 0 8 0 lockfpl 104 127 0 125 1 0 1 1 0 8 0 lockfspl 48 51 0 49 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 380 0 373 1 0 1 1 0 8 0 zombiepl 144 474 0 473 1 0 1 1 0 8 0 processpl 928 503 0 473 4 0 4 4 0 8 0 procpl 624 896 0 858 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 366 0 349 4 1 3 3 0 8 1 mcl64k 65536 12 0 12 2 2 0 1 0 8 0 mcl12k 12288 14 0 14 3 2 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 20 0 20 3 2 1 1 0 8 1 mcl4k 4096 35 0 35 4 3 1 1 0 8 1 mcl2k 2048 87009 0 86958 16 9 7 14 0 8 0 mtagpl 96 31 0 10 2 1 1 1 0 8 0 mbufpl 256 139356 0 139155 19 4 15 17 0 8 0 bufpl 280 3897 0 127 270 0 270 270 0 8 0 anonpl 16 73110 0 55261 101 17 84 87 0 107 12 amapchunkpl 152 2522 0 2371 13 6 7 11 0 158 0 amappl16 192 2469 0 1500 68 14 54 60 0 8 5 amappl15 184 148 0 145 1 0 1 1 0 8 0 amappl14 176 25 0 21 1 0 1 1 0 8 0 amappl13 168 160 0 156 1 0 1 1 0 8 0 amappl12 160 143 0 140 2 1 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 161 0 153 1 0 1 1 0 8 0 amappl9 136 366 0 365 1 0 1 1 0 8 0 amappl8 128 340 0 297 2 0 2 2 0 8 0 amappl7 120 107 0 95 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 450 0 435 1 0 1 1 0 8 0 amappl4 96 430 0 401 1 0 1 1 0 8 0 amappl3 88 117 0 112 1 0 1 1 0 8 0 amappl2 80 3328 0 3250 2 0 2 2 0 8 0 amappl1 72 20110 0 19677 23 14 9 17 0 8 0 amappl 80 1135 0 1090 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 6 1 0 1 1 0 8 0 uaddrrnd 24 492 0 475 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 492 0 475 1 0 1 1 0 8 0 vmmpekpl 168 7163 0 7134 2 0 2 2 0 8 0 vmmpepl 168 67272 0 65140 134 32 102 116 0 357 7 vmsppl 272 491 0 475 3 1 2 2 0 8 0 pdppl 4096 990 0 953 7 1 6 6 0 8 1 pvpl 32 206793 0 186167 214 17 197 200 0 265 30 pmappl 200 491 0 475 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 261 0 27 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(3fff7edfffb) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aedb00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001e7b7220) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8067dce5b0,7,fffffd806c3bf9c0,ffff80001d6c3128) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805717dda8,ffff80001d6c3128) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805717dda8,ffff80001d6c3128) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805717dda8,ffff80001d6c3128) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805717dda8,ffff80001d6c3128) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6c3128) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6c3128,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6c3128,ffff80001e7b74b0,ffff80001e7b7500) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e7b7580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8670, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(3fff7edfffb) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aedb00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001e7b7220) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8067dce5b0,7,fffffd806c3bf9c0,ffff80001d6c3128) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805717dda8,ffff80001d6c3128) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805717dda8,ffff80001d6c3128) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805717dda8,ffff80001d6c3128) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805717dda8,ffff80001d6c3128) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6c3128) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6c3128,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6c3128,ffff80001e7b74b0,ffff80001e7b7500) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e7b7580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8670, count: -16