uvm_fault(0xfffffd806bc09000, 0xb, 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(0xfffffd806bc09000, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d793190, count: 0 ddb> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000adf200) 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 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d793370) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e06d8f0,7,fffffd806c3bfc00,ffff80001d6a9278) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057517c40,ffff80001d6a9278) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057517c40,ffff80001d6a9278) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057517c40,ffff80001d6a9278) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057517c40,ffff80001d6a9278) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6a9278) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6a9278,0,d,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6a9278,d) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6a9278,d) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6a9278) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7937f0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7937f0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4c90, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d793140 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0xe8cbe48113d57d82 r11 0xa72977907ca2e7af r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7930e0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=111925 stat=onproc flags process=a proc=2000 pri=32, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff80001d71ceb0,0xffff80001d6a9c48 process=0xffff80001d6c5970 user=0xffff80001d78e000, vmspace=0xfffffd806bc09000 estcpu=9, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 24067 135787 0 0 3 0x14280 nfsidl nfsio 24758 443396 0 0 3 0x14280 nfsidl nfsio 88390 64115 0 0 3 0x14280 nfsidl nfsio 18867 489402 0 0 3 0x14280 nfsidl nfsio 68253 395042 0 0 3 0x14280 nfsidl nfsio 58826 281533 0 0 3 0x14280 nfsidl nfsio 9631 135673 0 0 3 0x14280 nfsidl nfsio 61341 421685 0 0 3 0x14280 nfsidl nfsio 23395 426710 0 0 3 0x14280 nfsidl nfsio 92345 378619 0 0 3 0x14280 nfsidl nfsio 27069 403187 0 0 3 0x14280 nfsidl nfsio 43715 157837 0 0 3 0x14280 nfsidl nfsio 33372 275160 0 0 3 0x14280 nfsidl nfsio 81534 48275 0 0 3 0x14280 nfsidl nfsio 41915 404559 0 0 3 0x14280 nfsidl nfsio 71376 216214 0 0 3 0x14280 nfsidl nfsio 78243 110620 0 0 3 0x14280 nfsidl nfsio 51337 71197 0 0 3 0x14280 nfsidl nfsio 5965 383448 0 0 3 0x14280 nfsidl nfsio 76830 172518 0 0 3 0x14280 nfsidl nfsio 67870 224717 0 0 3 0x14200 bored sosplice 5703 44685 1 0 3 0x100083 ttyin getty 30217 105838 1 0 3 0x80 select sshd 29768 396323 31778 73 3 0x100090 kqread syslogd 31778 439637 1 0 3 0x100082 netio syslogd 37323 268471 1 77 2 0x100010 dhclient 30993 190884 1 0 3 0x80 poll dhclient 12067 202552 0 0 3 0x14200 bored smr 96525 274715 0 0 3 0x14200 pgzero zerothread 91248 56852 0 0 3 0x14200 aiodoned aiodoned 85887 163053 0 0 3 0x14200 syncer update 12719 55301 0 0 3 0x14200 cleaner cleaner 59848 351538 0 0 3 0x14200 reaper reaper 71439 85670 0 0 3 0x14200 pgdaemon pagedaemon 2445 298092 0 0 3 0x14200 bored crynlk 58805 487080 0 0 3 0x14200 bored crypto 31544 225742 0 0 3 0x40014200 acpi0 acpi0 40351 415888 0 0 2 0x14200 softnet 44716 250271 0 0 2 0x14200 systqmp 43016 247847 0 0 3 0x14200 bored systq 33561 147830 0 0 3 0x40014200 bored softclock 71761 116635 0 0 3 0x40014200 idle0 1 337396 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 9475 6334K 6917K 78643K 11018 0 pcb 13 8K 8K 78643K 104 0 rtable 64 4K 7K 78643K 414 0 ifaddr 59 13K 15K 78643K 145 0 sysctl 2 0K 0K 78643K 2 0 counters 20 16K 16K 78643K 23 0 ioctlops 0 0K 4K 78643K 54 0 iov 0 0K 16K 78643K 33 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1342 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 62 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 3 8K 25K 78643K 314 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 63K 78643K 387 0 subproc 14 0K 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 86 0 in_multi 48 2K 3K 78643K 102 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 8 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 191 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 53 34K 40K 78643K 1640 0 UVM aobj 11 2K 2K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 8 0K 0K 78643K 16 0 temp 85 3852K 3916K 78643K 4618 0 kqueue 2 2K 9K 78643K 12 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 6 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 58 0 40 2 0 2 2 0 8 0 unpcb 120 197 0 190 1 0 1 1 0 8 0 syncache 264 8 0 8 2 2 0 1 0 8 0 tcpqe 32 37 0 37 1 1 0 1 0 8 0 tcpcb 544 208 0 202 4 1 3 4 0 8 1 inpcb 296 490 0 483 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 7 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 75 0 71 1 0 1 1 0 8 0 pftag 88 12 0 12 1 1 0 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 256 288 0 149 13 1 12 13 0 8 0 art_table 32 290 0 149 2 0 2 2 0 8 0 art_node 16 57 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 54 0 44 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1809 0 411 88 0 88 88 0 8 0 ffsino 240 1809 0 411 83 0 83 83 0 8 0 nchpl 144 2472 0 882 60 0 60 60 0 8 0 uvmvnodes 72 1947 0 0 36 0 36 36 0 8 0 vnodes 208 1947 0 0 103 0 103 103 0 8 0 namei 1024 6381 0 6381 1 0 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 1 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 20 0 20 1 1 0 1 0 8 0 scxspl 192 7231 0 7231 1 0 1 1 0 8 1 plimitpl 152 36 0 30 1 0 1 1 0 8 0 sigapl 424 521 0 476 6 0 6 6 0 8 0 futexpl 56 6021 0 6021 1 0 1 1 0 8 1 knotepl 112 78 0 73 1 0 1 1 0 8 0 kqueuepl 144 32 0 31 1 0 1 1 0 8 0 pipepl 272 189 0 185 2 1 1 2 0 8 0 fdescpl 432 486 0 476 2 0 2 2 0 8 0 filepl 120 2905 0 2852 4 0 4 4 0 8 1 lockfpl 104 47 0 46 1 0 1 1 0 8 0 lockfspl 48 21 0 20 1 0 1 1 0 8 0 sessionpl 112 17 0 9 1 0 1 1 0 8 0 pgrppl 48 21 0 13 1 0 1 1 0 8 0 ucredpl 96 266 0 259 1 0 1 1 0 8 0 zombiepl 144 478 0 476 1 0 1 1 0 8 0 processpl 928 521 0 476 7 0 7 7 0 8 0 procpl 624 921 0 876 5 0 5 5 0 8 0 sosppl 128 7 0 7 1 1 0 1 0 8 0 sockpl 400 719 0 703 4 1 3 4 0 8 1 mcl64k 65536 7 0 7 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 10 0 10 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 12 0 12 1 0 1 1 0 8 1 mcl4k 4096 40 0 40 2 1 1 1 0 8 1 mcl2k 2048 93187 0 93142 15 8 7 13 0 8 1 mtagpl 96 17 0 17 2 1 1 1 0 8 1 mbufpl 256 148746 0 148683 16 1 15 15 0 8 5 bufpl 280 3876 0 126 268 0 268 268 0 8 0 anonpl 16 60782 0 59833 75 5 70 74 0 107 58 amapchunkpl 152 2594 0 2563 16 9 7 16 0 158 4 amappl16 192 2221 0 2208 47 1 46 47 0 8 40 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 34 0 31 1 0 1 1 0 8 0 amappl13 168 28 0 26 1 0 1 1 0 8 0 amappl12 160 165 0 164 1 0 1 1 0 8 0 amappl11 152 51 0 41 1 0 1 1 0 8 0 amappl10 144 17 0 14 1 0 1 1 0 8 0 amappl9 136 468 0 466 1 0 1 1 0 8 0 amappl8 128 466 0 465 2 0 2 2 0 8 1 amappl7 120 108 0 101 1 0 1 1 0 8 0 amappl6 112 26 0 26 1 0 1 1 0 8 1 amappl5 104 655 0 645 1 0 1 1 0 8 0 amappl4 96 428 0 407 1 0 1 1 0 8 0 amappl3 88 109 0 105 1 0 1 1 0 8 0 amappl2 80 3044 0 3002 2 0 2 2 0 8 0 amappl1 72 20491 0 20213 23 13 10 17 0 8 0 amappl 80 1150 0 1131 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 487 0 476 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 487 0 476 1 0 1 1 0 8 0 vmmpekpl 168 7351 0 7322 2 0 2 2 0 8 0 vmmpepl 168 66874 0 66185 116 19 97 111 0 357 45 vmsppl 272 486 0 476 3 1 2 2 0 8 1 pdppl 4096 980 0 953 6 1 5 6 0 8 0 pvpl 32 186672 0 184613 177 4 173 177 0 265 122 pmappl 200 486 0 476 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 253 0 19 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000adf200) 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 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d793370) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e06d8f0,7,fffffd806c3bfc00,ffff80001d6a9278) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057517c40,ffff80001d6a9278) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057517c40,ffff80001d6a9278) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057517c40,ffff80001d6a9278) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057517c40,ffff80001d6a9278) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6a9278) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6a9278,0,d,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6a9278,d) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6a9278,d) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6a9278) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7937f0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7937f0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4c90, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000adf200) 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 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d793370) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e06d8f0,7,fffffd806c3bfc00,ffff80001d6a9278) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057517c40,ffff80001d6a9278) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057517c40,ffff80001d6a9278) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057517c40,ffff80001d6a9278) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057517c40,ffff80001d6a9278) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6a9278) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6a9278,0,d,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6a9278,d) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6a9278,d) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6a9278) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7937f0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7937f0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4c90, count: -17