uvm_fault(0xfffffd806bc0a550, 0x3fff7ee000b, 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(0xfffffd806bc0a550, 0x3fff7ee000b, 0, 1) -> e in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d7b4bd0, count: 0 ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad7b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) 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(ffff80001d7b4db0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d858270,7,fffffd806c3bfba0,ffff8000ffff89e8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80572ee178,ffff8000ffff89e8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80572ee178,ffff8000ffff89e8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80572ee178,ffff8000ffff89e8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80572ee178,ffff8000ffff89e8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff89e8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff89e8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff89e8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff89e8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff89e8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7b5230) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7b5230) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffecc00, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d7b4b80 rbx 0 rdx 0 rcx 0x1 rax 0xffff8000ffff89e8 r8 0xffff800000ad7b00 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xee2a6eaab2f1fa30 r12 0 r13 0x3 r14 0x3fff7edffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7b4b20 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=6193 stat=onproc flags process=a proc=2000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8770,0xffff80001d6bec80 process=0xffff80001d6c1630 user=0xffff80001d7b0000, vmspace=0xfffffd806bc0a550 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 98292 86950 0 0 3 0x14200 bored sosplice 63829 209547 0 0 3 0x14280 nfsidl nfsio 37407 338221 0 0 3 0x14280 nfsidl nfsio 59359 97480 0 0 3 0x14280 nfsidl nfsio 79857 60408 0 0 3 0x14280 nfsidl nfsio 80067 344694 0 0 3 0x14280 nfsidl nfsio 88100 352877 0 0 3 0x14280 nfsidl nfsio 92299 353950 0 0 3 0x14280 nfsidl nfsio 93139 26545 0 0 3 0x14280 nfsidl nfsio 13200 55692 0 0 3 0x14280 nfsidl nfsio 44223 463785 0 0 3 0x14280 nfsidl nfsio 76832 248100 0 0 3 0x14280 nfsidl nfsio 62526 335220 0 0 3 0x14280 nfsidl nfsio 47720 298510 0 0 3 0x14280 nfsidl nfsio 78167 68339 0 0 3 0x14280 nfsidl nfsio 45486 118209 0 0 3 0x14280 nfsidl nfsio 4255 512295 0 0 3 0x14280 nfsidl nfsio 17587 200624 0 0 3 0x14280 nfsidl nfsio 96164 159329 0 0 3 0x14280 nfsidl nfsio 86964 448944 0 0 3 0x14280 nfsidl nfsio 24330 497458 0 0 3 0x14280 nfsidl nfsio 98863 234573 0 0 3 0x14200 acct acct 607 246895 57882 0 3 0x82 piperd syz-executor.1 57882 489885 52570 0 3 0x82 thrsleep syz-fuzzer 57882 116534 52570 0 3 0x4000082 nanosleep syz-fuzzer 57882 384766 52570 0 3 0x4000082 thrsleep syz-fuzzer 57882 8845 52570 0 3 0x4000082 thrsleep syz-fuzzer 57882 486683 52570 0 3 0x4000082 thrsleep syz-fuzzer 57882 422793 52570 0 3 0x4000082 thrsleep syz-fuzzer 57882 405842 52570 0 2 0x4000002 syz-fuzzer 52570 375239 22252 0 3 0x10008a pause ksh 22252 514262 30291 0 3 0x92 select sshd 39107 493645 1 0 3 0x100083 ttyin getty 30291 136572 1 0 3 0x80 select sshd 96830 384184 9115 73 3 0x100090 kqread syslogd 9115 67545 1 0 3 0x100082 netio syslogd 86710 201811 1 77 2 0x100090 dhclient 49956 59098 1 0 3 0x80 poll dhclient 22520 231945 0 0 3 0x14200 bored smr 47366 341843 0 0 2 0x14200 zerothread 32062 140099 0 0 3 0x14200 aiodoned aiodoned 4034 424863 0 0 3 0x14200 syncer update 15700 155488 0 0 3 0x14200 cleaner cleaner 28847 31595 0 0 3 0x14200 reaper reaper 72993 203451 0 0 3 0x14200 pgdaemon pagedaemon 98052 456095 0 0 3 0x14200 bored crynlk 89481 364188 0 0 3 0x14200 bored crypto 51361 240864 0 0 3 0x40014200 acpi0 acpi0 38703 359636 0 0 3 0x14200 bored softnet 74678 441214 0 0 2 0x14200 systqmp 62251 411386 0 0 3 0x14200 bored systq 59750 427908 0 0 3 0x40014200 bored softclock 93112 243658 0 0 3 0x40014200 idle0 1 97297 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 9476 6334K 6713K 78643K 10788 0 pcb 13 8K 8K 78643K 45 0 rtable 98 3K 7K 78643K 430 0 ifaddr 58 12K 13K 78643K 143 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 41 0 iov 0 0K 12K 78643K 12 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1278 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 10 1K 1K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 291 0 sigio 0 0K 0K 78643K 4 0 proc 48 38K 54K 78643K 373 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 12 0 in_multi 39 2K 2K 78643K 66 0 ether_multi 1 0K 0K 78643K 6 0 mrt 0 0K 0K 78643K 6 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 199 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 142 23K 33K 78643K 1549 0 UVM aobj 14 2K 2K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 16 0 NDP 9 0K 0K 78643K 18 0 temp 97 3857K 3921K 78643K 3536 0 kqueue 3 4K 6K 78643K 5 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 27 0 25 1 0 1 1 0 8 0 rtentry 112 55 0 15 2 0 2 2 0 8 0 unpcb 120 617 0 609 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 252 0 252 1 1 0 1 0 8 0 tcpcb 592 56 0 52 2 1 1 2 0 8 0 inpcb 296 387 0 380 3 2 1 2 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 8 0 2 1 0 1 1 0 8 0 pfrktable 1344 86 0 86 1 1 0 1 0 8 0 pftag 88 12 0 12 1 1 0 1 0 8 0 pfrule 1360 14 0 12 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 191 0 3 12 0 12 12 0 8 0 art_table 32 192 0 3 2 0 2 2 0 8 0 art_node 16 54 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 14 1 1 0 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 10 0 2 1 0 1 1 0 8 0 shmpl 112 20 0 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1720 0 324 88 0 88 88 0 8 0 ffsino 240 1720 0 324 83 0 83 83 0 8 0 nchpl 144 2300 0 702 60 0 60 60 0 8 0 uvmvnodes 72 1803 0 0 33 0 33 33 0 8 0 vnodes 208 1803 0 0 95 0 95 95 0 8 0 namei 1024 5753 0 5753 1 0 1 1 0 8 1 pfiaddrpl 120 24 0 24 1 1 0 1 0 8 0 scxspl 200 6535 0 6535 1 0 1 1 0 8 1 plimitpl 152 22 0 15 1 0 1 1 0 8 0 sigapl 424 499 0 450 6 0 6 6 0 8 0 futexpl 56 5213 0 5213 1 0 1 1 0 8 1 knotepl 112 66 0 48 1 0 1 1 0 8 0 kqueuepl 152 20 0 18 1 0 1 1 0 8 0 pipepl 272 81 0 71 1 0 1 1 0 8 0 fdescpl 432 463 0 450 2 0 2 2 0 8 0 filepl 120 2683 0 2597 4 0 4 4 0 8 1 lockfpl 104 33 0 32 1 0 1 1 0 8 0 lockfspl 48 13 0 12 1 0 1 1 0 8 0 sessionpl 120 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 165 0 158 1 0 1 1 0 8 0 zombiepl 144 451 0 450 1 0 1 1 0 8 0 processpl 944 499 0 450 7 0 7 7 0 8 0 procpl 632 815 0 760 5 0 5 5 0 8 0 sosppl 144 4 0 4 1 0 1 1 0 8 1 sockpl 400 1032 0 1015 5 2 3 4 0 8 1 mcl64k 65536 15 0 15 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 9 0 9 1 1 0 1 0 8 0 mcl9k 9216 6 0 6 1 1 0 1 0 8 0 mcl8k 8192 12 0 12 2 2 0 1 0 8 0 mcl4k 4096 25 0 25 3 2 1 1 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 92577 0 92527 26 19 7 19 0 8 0 mtagpl 96 22 0 22 2 1 1 1 0 8 1 mbufpl 256 148400 0 148296 17 6 11 12 0 8 0 bufpl 280 3608 0 116 250 0 250 250 0 8 0 anonpl 16 65604 0 46959 99 17 82 98 0 107 0 amapchunkpl 152 2437 0 2252 13 3 10 13 0 158 0 amappl16 192 2296 0 1229 62 8 54 62 0 8 0 amappl15 184 141 0 139 1 0 1 1 0 8 0 amappl14 176 4 0 1 1 0 1 1 0 8 0 amappl13 168 144 0 140 1 0 1 1 0 8 0 amappl12 160 22 0 18 1 0 1 1 0 8 0 amappl11 152 49 0 40 1 0 1 1 0 8 0 amappl10 144 164 0 158 1 0 1 1 0 8 0 amappl9 136 360 0 359 1 0 1 1 0 8 0 amappl8 128 334 0 286 2 0 2 2 0 8 0 amappl7 120 104 0 92 1 0 1 1 0 8 0 amappl6 112 34 0 23 1 0 1 1 0 8 0 amappl5 104 387 0 376 1 0 1 1 0 8 0 amappl4 96 544 0 517 1 0 1 1 0 8 0 amappl3 88 132 0 121 1 0 1 1 0 8 0 amappl2 80 3026 0 2966 2 0 2 2 0 8 0 amappl1 72 19314 0 18928 22 13 9 17 0 8 0 amappl 80 1064 0 1013 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 22 0 9 1 0 1 1 0 8 0 uaddrrnd 24 463 0 450 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 463 0 450 1 0 1 1 0 8 0 vmmpekpl 168 6633 0 6607 2 0 2 2 0 8 0 vmmpepl 168 63052 0 60975 154 33 121 151 0 357 26 vmsppl 272 462 0 450 2 1 1 2 0 8 0 pdppl 4096 932 0 900 6 1 5 6 0 8 0 pvpl 32 189023 0 167361 224 16 208 224 0 265 19 pmappl 200 462 0 450 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 258 0 39 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad7b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) 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(ffff80001d7b4db0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d858270,7,fffffd806c3bfba0,ffff8000ffff89e8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80572ee178,ffff8000ffff89e8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80572ee178,ffff8000ffff89e8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80572ee178,ffff8000ffff89e8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80572ee178,ffff8000ffff89e8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff89e8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff89e8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff89e8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff89e8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff89e8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7b5230) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7b5230) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffecc00, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad7b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) 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(ffff80001d7b4db0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d858270,7,fffffd806c3bfba0,ffff8000ffff89e8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80572ee178,ffff8000ffff89e8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80572ee178,ffff8000ffff89e8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80572ee178,ffff8000ffff89e8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80572ee178,ffff8000ffff89e8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff89e8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff89e8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff89e8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff89e8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff89e8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7b5230) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7b5230) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffecc00, count: -17