uvm_fault(0xfffffd806bc0a000, 0x8c, 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(0xfffffd806bc0a000, 0x8c, 0, 1) -> e in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d7696a0, count: 0 ddb> trace in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae7800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d769880) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b6119c0,7,fffffd806c3bfba0,ffff80001d6bf3d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806647c810,ffff80001d6bf3d8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806647c810,ffff80001d6bf3d8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd806647c810,ffff80001d6bf3d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806647c810,ffff80001d6bf3d8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bf3d8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bf3d8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bf3d8,ffff80001d769b10,ffff80001d769b60) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d769be0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc150, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d769650 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6bf3d8 r8 0xffff800000ae7800 r9 0xffffffff817c4993 rt_ifa_purge+0x153 r10 0x5 r11 0xe90719af4242346a r12 0 r13 0x3 r14 0x80 r15 0x1 rip 0xffffffff81b5242d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7695f0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=425671 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff80001d76bb48,0xffff80001d6be518 process=0xffff80001d780790 user=0xffff80001d764000, vmspace=0xfffffd806bc0a000 estcpu=26, cpticks=0, pctcpu=0.2 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45423 398464 77193 0 2 0 syz-executor.0 45423 351064 77193 0 3 0x4000080 fsleep syz-executor.0 91795 403765 0 0 3 0x14200 acct acct 91948 501527 0 0 3 0x14280 nfsidl nfsio 30598 205399 0 0 3 0x14280 nfsidl nfsio 42213 383639 0 0 3 0x14280 nfsidl nfsio 52210 411269 0 0 3 0x14280 nfsidl nfsio 2585 5095 0 0 3 0x14280 nfsidl nfsio 72055 409647 0 0 3 0x14280 nfsidl nfsio 78197 187214 0 0 3 0x14280 nfsidl nfsio 880 403596 0 0 3 0x14280 nfsidl nfsio 19862 59915 0 0 3 0x14280 nfsidl nfsio 32124 206968 0 0 3 0x14280 nfsidl nfsio 82920 179142 0 0 3 0x14280 nfsidl nfsio 35406 65862 0 0 3 0x14280 nfsidl nfsio 7035 163901 0 0 3 0x14280 nfsidl nfsio 91023 154669 0 0 3 0x14280 nfsidl nfsio 60189 333129 0 0 3 0x14280 nfsidl nfsio 67093 30855 0 0 3 0x14280 nfsidl nfsio 84049 409626 0 0 3 0x14280 nfsidl nfsio 2275 462244 0 0 3 0x14280 nfsidl nfsio 18522 471925 0 0 3 0x14280 nfsidl nfsio 61293 44036 0 0 3 0x14280 nfsidl nfsio 99259 411802 0 0 3 0x14200 bored sosplice 77193 113839 58824 0 3 0x82 nanosleep syz-executor.0 58824 398875 12824 0 3 0x82 thrsleep syz-fuzzer 58824 269066 12824 0 3 0x4000082 nanosleep syz-fuzzer 58824 507014 12824 0 3 0x4000082 thrsleep syz-fuzzer 58824 477069 12824 0 3 0x4000082 thrsleep syz-fuzzer 58824 92221 12824 0 3 0x4000082 thrsleep syz-fuzzer 58824 515941 12824 0 3 0x4000082 thrsleep syz-fuzzer 58824 152860 12824 0 2 0x4000002 syz-fuzzer 12824 349700 83585 0 3 0x10008a pause ksh 83585 289537 72541 0 3 0x92 select sshd 66201 282553 1 0 3 0x100083 ttyin getty 72541 209467 1 0 3 0x80 select sshd 11988 206614 3025 73 3 0x100090 kqread syslogd 3025 230784 1 0 3 0x100082 netio syslogd 71152 57982 1 77 2 0x100090 dhclient 8194 64247 1 0 3 0x80 poll dhclient 58889 492648 0 0 3 0x14200 bored smr 72971 131031 0 0 2 0x14200 zerothread 22051 98398 0 0 3 0x14200 aiodoned aiodoned 94405 309966 0 0 2 0x14200 update 95424 261340 0 0 3 0x14200 cleaner cleaner 47474 93656 0 0 3 0x14200 reaper reaper 79048 275017 0 0 3 0x14200 pgdaemon pagedaemon 52714 119291 0 0 3 0x14200 bored crynlk 4512 193250 0 0 3 0x14200 bored crypto 83864 83605 0 0 3 0x40014200 acpi0 acpi0 86439 336032 0 0 3 0x14200 bored softnet 934 495565 0 0 2 0x14200 systqmp 23064 221976 0 0 3 0x14200 bored systq 42545 308384 0 0 3 0x40014200 bored softclock 22969 148948 0 0 3 0x40014200 idle0 1 20399 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 9483 6337K 6582K 78643K 10756 0 pcb 13 8K 8K 78643K 58 0 rtable 103 3K 4K 78643K 274 0 ifaddr 75 16K 16K 78643K 87 0 counters 21 16K 16K 78643K 22 0 ioctlops 0 0K 4K 78643K 55 0 iov 0 0K 18K 78643K 28 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1315 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 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 64 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 277 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 55K 78643K 416 0 subproc 23 1K 2K 78643K 55 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 76 3K 3K 78643K 110 0 ether_multi 1 0K 0K 78643K 8 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 218 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 125 22K 23K 78643K 1478 0 UVM aobj 13 2K 2K 78643K 15 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 10 0K 0K 78643K 17 0 temp 86 3857K 3936K 78643K 2888 0 kqueue 3 4K 6K 78643K 4 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 8 0 4 1 0 1 1 0 8 0 rtpcb 88 29 0 27 1 0 1 1 0 8 0 rtentry 112 63 0 21 2 0 2 2 0 8 0 unpcb 120 109 0 101 1 0 1 1 0 8 0 syncache 272 8 0 8 2 2 0 1 0 8 0 tcpqe 32 182 0 182 1 1 0 1 0 8 0 tcpcb 592 79 0 73 2 0 2 2 0 8 0 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 296 232 0 225 2 0 2 2 0 8 1 rttmr 72 7 0 6 2 1 1 1 0 8 0 nd6 48 9 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 6 0 4 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 6 0 6 1 1 0 1 0 8 0 pfstitem 24 8 0 4 1 0 1 1 0 8 0 pfstkey 112 12 0 9 1 0 1 1 0 8 0 pfstate 328 6 0 4 1 0 1 1 0 8 0 pfrule 1360 8 0 4 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 262 0 44 14 0 14 14 0 8 0 art_table 32 264 0 44 2 0 2 2 0 8 0 art_node 16 62 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 60 0 50 1 0 1 1 0 8 0 shmpl 112 12 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1713 0 318 88 0 88 88 0 8 0 ffsino 240 1713 0 318 83 0 83 83 0 8 0 nchpl 144 2437 0 855 60 0 60 60 0 8 0 uvmvnodes 72 1827 0 0 34 0 34 34 0 8 0 vnodes 208 1827 0 0 97 0 97 97 0 8 0 namei 1024 6290 0 6290 1 0 1 1 0 8 1 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 scxspl 200 6670 0 6670 1 0 1 1 0 8 1 plimitpl 152 31 0 24 1 0 1 1 0 8 0 sigapl 424 482 0 432 6 0 6 6 0 8 0 futexpl 56 4625 0 4624 1 0 1 1 0 8 0 knotepl 112 78 0 64 1 0 1 1 0 8 0 kqueuepl 152 28 0 26 1 0 1 1 0 8 0 pipepl 272 125 0 117 3 1 2 2 0 8 1 fdescpl 432 446 0 432 2 0 2 2 0 8 0 filepl 120 2562 0 2479 4 0 4 4 0 8 0 lockfpl 104 70 0 68 1 0 1 1 0 8 0 lockfspl 48 29 0 27 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 217 0 210 1 0 1 1 0 8 0 zombiepl 144 433 0 432 1 0 1 1 0 8 0 processpl 944 482 0 432 7 0 7 7 0 8 0 procpl 632 757 0 700 6 0 6 6 0 8 1 sosppl 144 2 0 2 1 1 0 1 0 8 0 sockpl 400 373 0 356 3 0 3 3 0 8 1 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl16k 16384 6 0 6 1 0 1 1 0 8 1 mcl12k 12288 7 0 7 1 0 1 1 0 8 1 mcl9k 9216 8 0 8 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 2 1 1 1 0 8 1 mcl4k 4096 31 0 31 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 95537 0 95483 18 10 8 17 0 8 0 mtagpl 96 13 0 10 2 1 1 1 0 8 0 mbufpl 256 152049 0 151964 14 3 11 12 0 8 4 bufpl 280 3763 0 115 261 0 261 261 0 8 0 anonpl 16 60345 0 44717 82 7 75 80 0 107 2 amapchunkpl 152 2104 0 1929 13 5 8 13 0 158 0 amappl16 192 2063 0 1115 49 0 49 49 0 8 1 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 11 0 8 1 0 1 1 0 8 0 amappl13 168 116 0 112 1 0 1 1 0 8 0 amappl12 160 107 0 103 1 0 1 1 0 8 0 amappl11 152 52 0 42 1 0 1 1 0 8 0 amappl10 144 18 0 14 1 0 1 1 0 8 0 amappl9 136 388 0 387 1 0 1 1 0 8 0 amappl8 128 341 0 314 1 0 1 1 0 8 0 amappl7 120 115 0 104 1 0 1 1 0 8 0 amappl6 112 31 0 23 1 0 1 1 0 8 0 amappl5 104 297 0 285 1 0 1 1 0 8 0 amappl4 96 525 0 497 1 0 1 1 0 8 0 amappl3 88 219 0 209 1 0 1 1 0 8 0 amappl2 80 2673 0 2602 2 0 2 2 0 8 0 amappl1 72 19059 0 18629 24 15 9 17 0 8 0 amappl 80 985 0 932 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 14 0 2 1 0 1 1 0 8 0 uaddrrnd 24 446 0 432 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 446 0 432 1 0 1 1 0 8 0 vmmpekpl 168 6835 0 6805 2 0 2 2 0 8 0 vmmpepl 168 62157 0 60078 132 9 123 126 0 357 31 vmsppl 272 445 0 432 2 1 1 2 0 8 0 pdppl 4096 898 0 864 6 1 5 6 0 8 0 pvpl 32 189166 0 170433 189 5 184 189 0 265 15 pmappl 200 445 0 432 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 248 0 22 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae7800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d769880) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b6119c0,7,fffffd806c3bfba0,ffff80001d6bf3d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806647c810,ffff80001d6bf3d8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806647c810,ffff80001d6bf3d8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd806647c810,ffff80001d6bf3d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806647c810,ffff80001d6bf3d8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bf3d8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bf3d8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bf3d8,ffff80001d769b10,ffff80001d769b60) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d769be0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc150, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae7800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d769880) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b6119c0,7,fffffd806c3bfba0,ffff80001d6bf3d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806647c810,ffff80001d6bf3d8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806647c810,ffff80001d6bf3d8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd806647c810,ffff80001d6bf3d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806647c810,ffff80001d6bf3d8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bf3d8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bf3d8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bf3d8,ffff80001d769b10,ffff80001d769b60) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d769be0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc150, count: -16