uvm_fault(0xfffffd806bc09cc0, 0x1000000000c, 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(0xfffffd806bc09cc0, 0x1000000000c, 0, 1) -> e in_delmulti(10000000000) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7b6ce0, count: 0 ddb> trace in_delmulti(10000000000) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aef100) 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 ifioctl(fffffd805eae5af0,80206979,ffff80001e7b6eb0,ffff80001d6a94e8) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6a94e8,ffff80001e7b6fc8,ffff80001e7b7010) at sys_ioctl+0x4a1 syscall(ffff80001e7b7090) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7ef0f32d60, count: -9 ddb> show registers rdi 0xffffffff81e46f2d in_delmulti+0x8d rsi 0x1131b __ALIGN_SIZE+0x1031b rbp 0xffff80001e7b6c90 rbx 0 rdx 0x1131c __ALIGN_SIZE+0x1031c rcx 0xffff80001d7a2000 rax 0xffff80001d7a2000 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x43a521f0a4013fab r11 0x738e4b0c76b38754 r12 0 r13 0x3 r14 0x10000000000 r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b6c30 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=343583 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9008,0xffffffff827f1030 process=0xffff80001d6c55d0 user=0xffff80001e7b2000, vmspace=0xfffffd806bc09cc0 estcpu=29, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 31677 339986 82893 0 3 0x80 nanosleep syz-executor.0 *31677 343583 82893 0 7 0x4000000 syz-executor.0 9060 403935 66547 0 3 0x82 piperd syz-executor.1 82893 48882 66547 0 3 0x82 nanosleep syz-executor.0 66547 285913 77334 0 3 0x82 thrsleep syz-fuzzer 66547 109548 77334 0 3 0x4000082 nanosleep syz-fuzzer 66547 242481 77334 0 3 0x4000082 thrsleep syz-fuzzer 66547 412424 77334 0 3 0x4000082 thrsleep syz-fuzzer 66547 301729 77334 0 3 0x4000082 thrsleep syz-fuzzer 66547 403516 77334 0 2 0x4000002 syz-fuzzer 66547 338741 77334 0 3 0x4000082 thrsleep syz-fuzzer 77334 241772 57753 0 3 0x10008a pause ksh 57753 44623 25560 0 3 0x92 select sshd 58711 211558 1 0 3 0x100083 ttyin getty 25560 94966 1 0 3 0x80 select sshd 78892 459032 85532 73 3 0x100090 kqread syslogd 85532 180117 1 0 3 0x100082 netio syslogd 10887 84455 1 77 2 0x100090 dhclient 6649 299368 1 0 3 0x80 poll dhclient 22577 278919 0 0 3 0x14200 bored smr 4681 294391 0 0 2 0x14200 zerothread 68277 178345 0 0 3 0x14200 aiodoned aiodoned 23062 67760 0 0 3 0x14200 syncer update 81295 394916 0 0 3 0x14200 cleaner cleaner 13162 56 0 0 3 0x14200 reaper reaper 85048 427513 0 0 3 0x14200 pgdaemon pagedaemon 80668 427775 0 0 3 0x14200 bored crynlk 45509 469359 0 0 3 0x14200 bored crypto 46166 406773 0 0 3 0x40014200 acpi0 acpi0 15197 249168 0 0 3 0x14200 bored softnet 67478 496430 0 0 2 0x14200 systqmp 56528 93719 0 0 3 0x14200 bored systq 67724 22785 0 0 3 0x40014200 bored softclock 53415 183977 0 0 3 0x40014200 idle0 1 379306 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 9468 6339K 6847K 78643K 11298 0 pcb 13 8K 8K 78643K 45 0 rtable 106 6K 10K 78643K 362 0 ifaddr 60 13K 14K 78643K 132 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 54 0 iov 0 0K 16K 78643K 16 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1409 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 28 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 208 0 sigio 0 0K 0K 78643K 4 0 proc 49 38K 54K 78643K 360 0 subproc 32 2K 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 10 0 in_multi 41 2K 2K 78643K 78 0 ether_multi 1 0K 0K 78643K 3 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 209 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 128 23K 39K 78643K 1330 0 UVM aobj 10 2K 2K 78643K 11 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 22 0 NDP 8 0K 0K 78643K 22 0 temp 90 3858K 3922K 78643K 5012 0 kqueue 3 4K 9K 78643K 11 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 23 0 21 1 0 1 1 0 8 0 rtentry 112 55 0 18 2 0 2 2 0 8 0 unpcb 120 73 0 65 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 258 0 258 1 1 0 1 0 8 0 tcpcb 544 48 0 40 2 1 1 2 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 296 182 0 173 4 2 2 2 0 8 1 nd6 48 13 0 9 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfosfp 40 2 0 0 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 57 0 51 2 1 1 2 0 8 0 pftag 88 8 0 6 1 0 1 1 0 8 0 pfrule 1360 15 0 9 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 213 0 40 13 0 13 13 0 8 0 art_table 32 214 0 40 2 0 2 2 0 8 0 art_node 16 54 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 9 2 1 1 1 0 8 0 semupl 112 6 0 6 2 2 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1652 0 253 88 0 88 88 0 8 0 ffsino 240 1652 0 253 83 0 83 83 0 8 0 nchpl 144 2192 0 601 60 0 60 60 0 8 0 uvmvnodes 72 1857 0 0 34 0 34 34 0 8 0 vnodes 208 1857 0 0 98 0 98 98 0 8 0 namei 1024 5690 0 5690 1 0 1 1 0 8 1 vmpool 528 4 0 4 1 1 0 1 0 8 0 pfiaddrpl 120 18 0 14 1 0 1 1 0 8 0 scxspl 192 6216 0 6216 1 0 1 1 0 8 1 plimitpl 152 26 0 19 1 0 1 1 0 8 0 sigapl 424 394 0 366 4 0 4 4 0 8 0 futexpl 56 3781 0 3781 1 0 1 1 0 8 1 knotepl 112 67 0 48 1 0 1 1 0 8 0 kqueuepl 144 10 0 8 1 0 1 1 0 8 0 pipepl 272 100 0 90 1 0 1 1 0 8 0 fdescpl 432 380 0 366 2 0 2 2 0 8 0 filepl 120 2192 0 2095 4 0 4 4 0 8 1 lockfpl 104 50 0 49 1 0 1 1 0 8 0 lockfspl 48 21 0 20 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 219 0 212 1 0 1 1 0 8 0 zombiepl 144 366 0 366 1 0 1 1 0 8 1 processpl 928 394 0 366 4 0 4 4 0 8 0 procpl 624 620 0 585 6 3 3 4 0 8 0 sockpl 400 278 0 259 5 2 3 3 0 8 1 mcl64k 65536 14 0 14 3 3 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 7 0 7 3 3 0 1 0 8 0 mcl9k 9216 6 0 6 3 3 0 1 0 8 0 mcl8k 8192 9 0 9 3 2 1 1 0 8 1 mcl4k 4096 31 0 31 3 2 1 1 0 8 1 mcl2k 2048 91632 0 91575 24 16 8 19 0 8 0 mtagpl 96 100 0 94 4 1 3 3 0 8 2 mbufpl 256 146131 0 146029 30 6 24 24 0 8 1 bufpl 280 3612 0 125 250 0 250 250 0 8 0 anonpl 16 51732 0 34695 78 9 69 73 0 107 0 amapchunkpl 152 2064 0 1922 26 17 9 20 0 158 3 amappl16 192 1625 0 675 48 0 48 48 0 8 0 amappl15 184 161 0 158 1 0 1 1 0 8 0 amappl14 176 23 0 18 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 26 0 24 1 0 1 1 0 8 0 amappl11 152 52 0 42 1 0 1 1 0 8 0 amappl10 144 179 0 170 1 0 1 1 0 8 0 amappl9 136 378 0 376 1 0 1 1 0 8 0 amappl8 128 326 0 283 2 0 2 2 0 8 0 amappl7 120 106 0 95 1 0 1 1 0 8 0 amappl6 112 23 0 19 1 0 1 1 0 8 0 amappl5 104 326 0 314 1 0 1 1 0 8 0 amappl4 96 420 0 394 1 0 1 1 0 8 0 amappl3 88 114 0 109 1 0 1 1 0 8 0 amappl2 80 2382 0 2314 2 0 2 2 0 8 0 amappl1 72 17365 0 16946 23 14 9 17 0 8 0 amappl 80 849 0 805 3 2 1 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 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 384 0 370 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 384 0 370 1 0 1 1 0 8 0 vmmpekpl 168 6500 0 6473 2 0 2 2 0 8 0 vmmpepl 168 52939 0 50880 123 32 91 114 0 357 1 vmsppl 272 383 0 370 2 1 1 2 0 8 0 pdppl 4096 774 0 740 6 1 5 6 0 8 0 pvpl 32 165483 0 145480 179 17 162 174 0 265 0 pmappl 200 383 0 370 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 278 0 40 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(10000000000) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aef100) 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 ifioctl(fffffd805eae5af0,80206979,ffff80001e7b6eb0,ffff80001d6a94e8) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6a94e8,ffff80001e7b6fc8,ffff80001e7b7010) at sys_ioctl+0x4a1 syscall(ffff80001e7b7090) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7ef0f32d60, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(10000000000) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aef100) 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 ifioctl(fffffd805eae5af0,80206979,ffff80001e7b6eb0,ffff80001d6a94e8) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6a94e8,ffff80001e7b6fc8,ffff80001e7b7010) at sys_ioctl+0x4a1 syscall(ffff80001e7b7090) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7ef0f32d60, count: -9