uvm_fault(0xfffffd803f013440, 0x100c, 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(0xfffffd803f013440, 0x100c, 0, 1) -> e in_delmulti(1000) at in_delmulti+0x8d sys/netinet/in.c:894 end trace frame: 0xffff800014917de0, count: 0 ddb> trace in_delmulti(1000) at in_delmulti+0x8d sys/netinet/in.c:894 in_purgeaddr(ffff8000006a0400) at in_purgeaddr+0x156 sys/netinet/in.c:740 in_ifdetach(ffff800000a61800) at in_ifdetach+0x74 sys/netinet/in.c:949 if_detach(ffff800000a61800) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a61800) at tun_clone_destroy+0x1c0 sys/net/if_tun.c:278 ifioctl(fffffd80363cb908,80206979,ffff800014917fb0,ffff8000ffff89e8) at ifioctl+0x3de sys/net/if.c:1938 sys_ioctl(ffff8000ffff89e8,ffff8000149180c8,ffff800014918110) at sys_ioctl+0x5b9 syscall(ffff800014918190) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc9610, count: -9 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff800014917d90 rbx 0 rdx 0x3 rcx 0x1 rax 0x1 r8 0xffff8000006a0400 r9 0x5 r10 0x89fecbe5ea216933 r11 0x84e08e9fef079c9a r12 0 r13 0x3 r14 0x1000 __ALIGN_SIZE r15 0x1 rip 0xffffffff81ab945d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014917d30 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=381473 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8280,0xffffffff825ab8a8 process=0xffff8000148a2018 user=0xffff800014913000, vmspace=0xfffffd803f013440 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND * 1005 381473 83064 0 7 0 syz-executor.0 83064 195115 90173 0 3 0x82 nanosleep syz-executor.0 90173 171357 17563 0 3 0x82 thrsleep syz-execprog 90173 104479 17563 0 3 0x4000082 nanosleep syz-execprog 90173 331842 17563 0 3 0x4000082 thrsleep syz-execprog 90173 338543 17563 0 3 0x4000082 thrsleep syz-execprog 90173 484631 17563 0 3 0x4000082 thrsleep syz-execprog 90173 268727 17563 0 3 0x4000082 kqread syz-execprog 90173 153612 17563 0 3 0x4000082 thrsleep syz-execprog 17563 39832 48480 0 3 0x10008a pause ksh 48480 31898 83219 0 3 0x92 select sshd 59756 397276 1 0 3 0x100083 ttyin getty 83219 18162 1 0 3 0x80 select sshd 12976 209971 72372 73 3 0x100090 kqread syslogd 72372 215618 1 0 3 0x100082 netio syslogd 19085 343572 1 77 2 0x100090 dhclient 7406 96304 1 0 3 0x80 poll dhclient 58396 244179 0 0 2 0x14200 zerothread 99252 462814 0 0 3 0x14200 aiodoned aiodoned 87418 91169 0 0 3 0x14200 syncer update 61434 52435 0 0 3 0x14200 cleaner cleaner 62712 369446 0 0 3 0x14200 reaper reaper 4315 405971 0 0 3 0x14200 pgdaemon pagedaemon 43516 280804 0 0 3 0x14200 bored crynlk 54862 139850 0 0 3 0x14200 bored crypto 32337 203997 0 0 3 0x40014200 acpi0 acpi0 955 491405 0 0 3 0x14200 bored softnet 43997 268204 0 0 2 0x14200 systqmp 65817 437791 0 0 3 0x14200 bored systq 61155 520140 0 0 3 0x40014200 bored softclock 67304 26981 0 0 3 0x40014200 idle0 55204 126436 0 0 3 0x14200 bored smr 1 345507 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 Kern Lim devbuf 9427 6310K 6310K 78643K 10522 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 75 2K 2K 78643K 153 0 0 ifaddr 32 8K 9K 78643K 33 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 14 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1180 74K 74K 78643K 1185 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 3 8K 12K 78643K 18 0 0 proc 47 38K 54K 78643K 318 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 25 1K 1K 78643K 26 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 171 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 66 11K 11K 78643K 838 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 6 0K 0K 78643K 6 0 0 temp 27 3517K 3581K 78643K 3028 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 2 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 5 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 28 0 20 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1412 0 19 45 0 45 45 0 8 0 ffsino 240 1412 0 19 82 0 82 82 0 8 0 nchpl 144 1651 0 50 60 0 60 60 0 8 0 uvmvnodes 72 1421 0 0 26 0 26 26 0 8 0 vnodes 208 1421 0 0 75 0 75 75 0 8 0 namei 1024 3835 0 3835 2 1 1 1 0 8 1 scxspl 192 4135 0 4135 9 8 1 6 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 196 0 184 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 128 134 0 121 2 1 1 1 0 8 0 fdescpl 424 197 0 184 2 0 2 2 0 8 0 filepl 120 974 0 919 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 184 0 184 2 1 1 1 0 8 1 processpl 864 211 0 184 4 0 4 4 0 8 0 procpl 632 217 0 184 3 0 3 3 0 8 0 sockpl 384 72 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 5485 0 5444 9 3 6 9 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9473 0 9384 8 2 6 6 0 8 0 bufpl 256 5783 0 1323 279 0 279 279 0 8 0 anonpl 16 20093 0 18613 15 2 13 13 0 62 6 amapchunkpl 152 728 0 668 5 0 5 5 0 158 2 amappl16 192 131 0 103 2 0 2 2 0 8 0 amappl15 184 4 0 1 1 0 1 1 0 8 0 amappl14 176 44 0 39 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 48 0 37 1 0 1 1 0 8 0 amappl10 144 10 0 9 2 1 1 1 0 8 0 amappl9 136 398 0 396 1 0 1 1 0 8 0 amappl8 128 111 0 102 1 0 1 1 0 8 0 amappl7 120 30 0 27 1 0 1 1 0 8 0 amappl6 112 59 0 51 1 0 1 1 0 8 0 amappl5 104 125 0 116 1 0 1 1 0 8 0 amappl4 96 425 0 400 1 0 1 1 0 8 0 amappl3 88 118 0 111 1 0 1 1 0 8 0 amappl2 80 837 0 777 4 1 3 3 0 8 1 amappl1 72 13439 0 13043 27 10 17 20 0 8 8 amappl 80 418 0 392 1 0 1 1 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 197 0 184 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 197 0 184 1 0 1 1 0 8 0 vmmpekpl 168 6158 0 6143 1 0 1 1 0 8 0 vmmpepl 168 28693 0 27829 95 18 77 77 0 357 39 vmsppl 272 196 0 184 1 0 1 1 0 8 0 pdppl 4096 400 0 368 5 0 5 5 0 8 0 pvpl 32 103440 0 99647 120 7 113 113 0 265 81 pmappl 200 196 0 184 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 406 0 9 12 0 12 12 0 8 0