uvm_fault(0xfffffd805399a670, 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(0xfffffd805399a670, 0x3fff7ee000b, 0, 1) -> e in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7b7a70, count: 0 ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2fc00) 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+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8060351960,80206979,ffff80001e7b7c40,ffff80001d6c2520) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6c2520,ffff80001e7b7d58,ffff80001e7b7da0) at sys_ioctl+0x4a1 syscall(ffff80001e7b7e20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa4e5f7cf370, count: -9 ddb> show registers rdi 0xffffffff81e46f2d in_delmulti+0x8d rsi 0xb4dd __ALIGN_SIZE+0xa4dd rbp 0xffff80001e7b7a20 rbx 0 rdx 0xb4de __ALIGN_SIZE+0xa4de rcx 0xffff80001f99e000 rax 0xffff80001f99e000 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x2cfcb8730a8a2b98 r11 0x82dd39083a6de3b9 r12 0 r13 0 r14 0x3fff7edffff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b79c0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=67513 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c33c0,0xffff80001d6c38b0 process=0xffff80001d6c4e90 user=0xffff80001e7b2000, vmspace=0xfffffd805399a670 estcpu=29, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34369 521748 24077 0 2 0 syz-executor.1 34369 225825 24077 0 2 0x4000000 syz-executor.1 55051 105633 23550 0 2 0x480 syz-executor.0 *55051 67513 23550 0 7 0x4000000 syz-executor.0 24077 293797 57624 0 2 0x482 syz-executor.1 88892 212144 0 0 3 0x14200 bored sosplice 40346 485797 0 0 3 0x14200 acct acct 23550 114982 57624 0 2 0x482 syz-executor.0 57624 485126 43670 0 2 0x2 syz-fuzzer 57624 75860 43670 0 2 0x4000002 syz-fuzzer 57624 485733 43670 0 3 0x4000082 thrsleep syz-fuzzer 57624 187435 43670 0 3 0x4000082 thrsleep syz-fuzzer 57624 341105 43670 0 3 0x4000082 thrsleep syz-fuzzer 57624 7881 43670 0 3 0x4000082 thrsleep syz-fuzzer 57624 210679 43670 0 3 0x4000082 thrsleep syz-fuzzer 57624 5812 43670 0 3 0x4000082 kqread syz-fuzzer 43670 483422 21448 0 3 0x10008a pause ksh 21448 458431 99154 0 3 0x92 select sshd 75586 242242 1 0 3 0x100083 ttyin getty 99154 324191 1 0 3 0x80 select sshd 23025 445470 62539 73 3 0x100090 kqread syslogd 62539 144679 1 0 3 0x100082 netio syslogd 62447 235929 1 77 3 0x100090 poll dhclient 14642 115704 1 0 3 0x80 poll dhclient 50263 387320 0 0 3 0x14200 bored smr 16533 446910 0 0 2 0x14200 zerothread 46105 146948 0 0 3 0x14200 aiodoned aiodoned 39479 355703 0 0 3 0x14200 syncer update 55148 175486 0 0 3 0x14200 cleaner cleaner 40626 265486 0 0 3 0x14200 reaper reaper 56602 50676 0 0 3 0x14200 pgdaemon pagedaemon 55983 153910 0 0 3 0x14200 bored crynlk 79630 366995 0 0 3 0x14200 bored crypto 1885 253141 0 0 3 0x40014200 acpi0 acpi0 76503 376645 0 0 3 0x14200 bored softnet 90587 224743 0 0 3 0x14200 bored systqmp 3961 490357 0 0 3 0x14200 bored systq 2020 309306 0 0 2 0x40014200 softclock 51935 281610 0 0 3 0x40014200 idle0 1 47924 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 9489 6354K 6983K 78643K 11616 0 pcb 13 8K 8K 78643K 99 0 rtable 91 5K 9K 78643K 546 0 ifaddr 72 15K 16K 78643K 184 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 31 0 ioctlops 0 0K 4K 78643K 109 0 iov 0 0K 16K 78643K 60 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1530 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 12 0K 0K 78643K 107 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 665 0 sigio 0 0K 0K 78643K 16 0 proc 49 38K 63K 78643K 453 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 32 0 in_multi 63 3K 3K 78643K 182 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 233 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 148 121K 121K 78643K 2400 0 UVM aobj 16 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 10 0K 0K 78643K 41 0 temp 124 3864K 3928K 78643K 13273 0 kqueue 3 4K 12K 78643K 26 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 9 0 5 1 0 1 1 0 8 0 rtpcb 80 43 0 41 1 0 1 1 0 8 0 rtentry 112 97 0 68 2 0 2 2 0 8 0 unpcb 120 618 0 607 1 0 1 1 0 8 0 syncache 264 12 0 12 6 5 1 1 0 8 1 tcpqe 32 839 0 839 1 1 0 1 0 8 0 tcpcb 544 382 0 366 5 3 2 2 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 12 0 12 2 2 0 1 0 8 0 inpcb 296 1355 0 1346 5 3 2 2 0 8 1 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 30 0 26 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 3 0 3 2 1 1 1 0 8 1 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pfrktable 1344 66 0 61 2 1 1 2 0 8 0 pftag 88 12 0 10 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 6 0 4 1 0 1 1 0 8 0 pfstkey 112 8 0 6 1 0 1 1 0 8 0 pfstate 328 4 0 3 1 0 1 1 0 8 0 pfrule 1360 17 0 13 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 415 0 279 17 6 11 14 0 8 0 art_table 32 417 0 279 2 0 2 2 0 8 0 art_node 16 96 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 104 0 94 1 0 1 1 0 8 0 shmpl 112 17 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2235 0 839 88 0 88 88 0 8 0 ffsino 240 2235 0 839 83 0 83 83 0 8 0 nchpl 144 3320 0 1728 60 0 60 60 0 8 0 uvmvnodes 72 2515 0 0 46 0 46 46 0 8 0 vnodes 208 2515 0 0 133 0 133 133 0 8 0 namei 1024 9469 0 9469 4 3 1 1 0 8 1 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 528 13 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 24 0 20 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 10230 0 10230 2 1 1 1 0 8 1 plimitpl 152 66 0 59 1 0 1 1 0 8 0 sigapl 424 870 0 839 6 2 4 6 0 8 0 futexpl 56 13277 0 13277 4 3 1 1 0 8 1 knotepl 112 99 0 80 1 0 1 1 0 8 0 kqueuepl 144 75 0 71 1 0 1 1 0 8 0 pipepl 272 146 0 136 2 1 1 2 0 8 0 fdescpl 432 834 0 819 2 0 2 2 0 8 0 filepl 120 5551 0 5453 5 1 4 4 0 8 0 lockfpl 104 111 0 110 1 0 1 1 0 8 0 lockfspl 48 41 0 40 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 818 0 811 1 0 1 1 0 8 0 zombiepl 144 839 0 839 3 2 1 1 0 8 1 processpl 928 870 0 839 8 4 4 7 0 8 0 procpl 624 1635 0 1595 9 5 4 5 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 2023 0 2001 7 3 4 4 0 8 1 mcl64k 65536 22 0 22 6 5 1 1 0 8 1 mcl16k 16384 4 0 4 4 3 1 1 0 8 1 mcl12k 12288 20 0 20 7 6 1 1 0 8 1 mcl9k 9216 13 0 13 5 4 1 1 0 8 1 mcl8k 8192 20 0 20 7 6 1 1 0 8 1 mcl4k 4096 49 0 49 7 6 1 1 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 96298 0 96241 26 18 8 20 0 8 0 mtagpl 96 55 0 51 2 1 1 1 0 8 0 mbufpl 256 157055 0 156967 24 6 18 22 0 8 2 bufpl 280 4718 0 131 328 0 328 328 0 8 0 anonpl 16 105226 0 88158 99 16 83 88 0 107 5 amapchunkpl 152 4519 0 4377 29 9 20 20 0 158 12 amappl16 192 4369 0 3284 80 17 63 67 0 8 8 amappl15 184 3 0 0 1 0 1 1 0 8 0 amappl14 176 34 0 26 1 0 1 1 0 8 0 amappl13 168 41 0 38 1 0 1 1 0 8 0 amappl12 160 88 0 83 1 0 1 1 0 8 0 amappl11 152 55 0 45 1 0 1 1 0 8 0 amappl10 144 258 0 255 1 0 1 1 0 8 0 amappl9 136 669 0 665 1 0 1 1 0 8 0 amappl8 128 665 0 615 2 0 2 2 0 8 0 amappl7 120 356 0 344 1 0 1 1 0 8 0 amappl6 112 24 0 19 2 1 1 1 0 8 0 amappl5 104 849 0 836 1 0 1 1 0 8 0 amappl4 96 441 0 415 1 0 1 1 0 8 0 amappl3 88 132 0 127 1 0 1 1 0 8 0 amappl2 80 5807 0 5732 2 0 2 2 0 8 0 amappl1 72 27965 0 27526 24 15 9 17 0 8 0 amappl 80 1867 0 1814 3 1 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 19 0 4 1 0 1 1 0 8 0 uaddrrnd 24 847 0 823 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 847 0 823 1 0 1 1 0 8 0 vmmpekpl 168 8367 0 8328 2 0 2 2 0 8 0 vmmpepl 168 109233 0 106908 193 58 135 145 0 357 33 vmsppl 272 846 0 823 3 1 2 2 0 8 0 pdppl 4096 1700 0 1655 8 2 6 6 0 8 0 pvpl 32 284594 0 264440 224 30 194 199 0 265 11 pmappl 200 846 0 823 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 308 0 70 8 0 8 8 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(ffff800000b2fc00) 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+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8060351960,80206979,ffff80001e7b7c40,ffff80001d6c2520) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6c2520,ffff80001e7b7d58,ffff80001e7b7da0) at sys_ioctl+0x4a1 syscall(ffff80001e7b7e20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa4e5f7cf370, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2fc00) 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+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8060351960,80206979,ffff80001e7b7c40,ffff80001d6c2520) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6c2520,ffff80001e7b7d58,ffff80001e7b7da0) at sys_ioctl+0x4a1 syscall(ffff80001e7b7e20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa4e5f7cf370, count: -9