uvm_fault(0xffffffff82798f10, 0xfffffffc0000000b, 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(0xffffffff82798f10, 0xfffffffc0000000b, 0, 1) -> e in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e79f290, count: 0 ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aedb00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7800) 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(ffff80001e79f470) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d717340,7,fffffd806c3bfae0,ffff80001d6beee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066b5eea0,ffff80001d6beee8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066b5eea0,ffff80001d6beee8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066b5eea0,ffff80001d6beee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066b5eea0,ffff80001d6beee8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6beee8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6beee8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6beee8,ffff80001e79f700,ffff80001e79f750) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e79f7d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6130, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e79f240 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6beee8 r8 0xffff800000aedb00 r9 0xffffffff817c4993 rt_ifa_purge+0x153 r10 0x5 r11 0xd3c2bc7f17489d18 r12 0 r13 0x3 r14 0xfffffffbffffffff r15 0x1 rip 0xffffffff81b5242d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e79f1e0 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=277305 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6bec70,0xffffffff828678e0 process=0xffff80001d6c03c0 user=0xffff80001e79a000, vmspace=0xfffffd8052f0fde0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 3439 375029 0 0 3 0x14200 acct acct 47141 40640 0 0 3 0x14200 bored sosplice 56020 261298 26491 0 3 0x82 piperd syz-executor.1 26491 197402 45233 0 3 0x82 thrsleep syz-fuzzer 26491 133126 45233 0 3 0x4000082 nanosleep syz-fuzzer 26491 144707 45233 0 3 0x4000082 thrsleep syz-fuzzer 26491 49262 45233 0 2 0x4000002 syz-fuzzer 26491 490284 45233 0 3 0x4000082 thrsleep syz-fuzzer 26491 395484 45233 0 3 0x4000082 thrsleep syz-fuzzer 45233 82009 50023 0 3 0x10008a pause ksh 50023 406483 26441 0 3 0x92 select sshd 22789 398818 1 0 3 0x100083 ttyin getty 26441 145403 1 0 3 0x80 select sshd 22590 328887 95024 73 3 0x100090 kqread syslogd 95024 2922 1 0 3 0x100082 netio syslogd 82345 268041 1 77 2 0x100090 dhclient 31225 244079 1 0 3 0x80 poll dhclient 18292 230585 0 0 3 0x14200 bored smr 94489 424338 0 0 3 0x14200 pgzero zerothread 68381 65443 0 0 3 0x14200 aiodoned aiodoned 43611 259438 0 0 3 0x14200 syncer update 25668 46743 0 0 3 0x14200 cleaner cleaner 78445 320699 0 0 3 0x14200 reaper reaper 42812 396937 0 0 3 0x14200 pgdaemon pagedaemon 8632 389930 0 0 3 0x14200 bored crynlk 90734 214015 0 0 3 0x14200 bored crypto 7721 121320 0 0 3 0x40014200 acpi0 acpi0 53406 9913 0 0 3 0x14200 bored softnet 14464 114590 0 0 2 0x14200 systqmp 77813 213559 0 0 3 0x14200 bored systq 46522 387209 0 0 3 0x40014200 bored softclock 59892 183884 0 0 3 0x40014200 idle0 1 492867 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 9500 6351K 6856K 78643K 11431 0 pcb 13 8K 9K 78643K 1193 0 rtable 105 7K 8K 78643K 671 0 ifaddr 93 19K 19K 78643K 258 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 36 0 ioctlops 0 0K 4K 78643K 163 0 iov 0 0K 32K 78643K 79 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1477 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 1K 1K 78643K 16 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 733 0 sigio 0 0K 0K 78643K 8 0 proc 49 38K 63K 78643K 410 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 105 0 in_multi 78 3K 3K 78643K 224 0 ether_multi 1 0K 0K 78643K 33 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 229 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 135 57K 77K 78643K 2496 0 UVM aobj 32 4K 4K 78643K 38 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 118 0 NDP 12 0K 0K 78643K 44 0 temp 124 3871K 3935K 78643K 13859 0 kqueue 3 4K 12K 78643K 21 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 3 1 0 1 1 0 8 0 rtpcb 88 61 0 59 1 0 1 1 0 8 0 rtentry 112 81 0 48 2 0 2 2 0 8 0 unpcb 120 337 0 329 1 0 1 1 0 8 0 syncache 272 8 0 8 4 4 0 1 0 8 0 tcpqe 32 87 0 87 1 1 0 1 0 8 0 tcpcb 592 274 0 270 3 2 1 2 0 8 0 ipq 40 8 0 8 4 4 0 1 0 8 0 ipqe 40 145 0 145 4 4 0 1 0 8 0 inpcb 296 1849 0 1842 3 1 2 2 0 8 1 rttmr 72 2 0 1 1 0 1 1 0 8 0 ip6q 72 2 0 2 2 2 0 1 0 8 0 ip6af 40 4 0 4 2 2 0 1 0 8 0 nd6 48 27 0 19 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 0 1 0 8 0 ppxss 1136 5 0 5 3 3 0 1 0 8 0 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pfrktable 1344 124 0 117 2 1 1 1 0 8 0 pftag 88 19 0 18 4 3 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 6 0 4 1 0 1 1 0 8 0 pfstate 328 3 0 2 1 0 1 1 0 8 0 pfrule 1360 44 0 30 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 335 0 131 15 1 14 14 0 8 0 art_table 32 336 0 131 2 0 2 2 0 8 0 art_node 16 80 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 7 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 35 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2313 0 919 88 0 88 88 0 8 0 ffsino 240 2313 0 919 83 0 83 83 0 8 0 nchpl 144 3490 0 1895 60 0 60 60 0 8 0 uvmvnodes 72 2544 0 0 47 0 47 47 0 8 0 vnodes 208 2544 0 0 134 0 134 134 0 8 0 namei 1024 9372 0 9372 1 0 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 42 0 36 2 1 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 10751 0 10751 1 0 1 1 0 8 1 plimitpl 152 77 0 70 1 0 1 1 0 8 0 sigapl 424 921 0 892 4 0 4 4 0 8 0 futexpl 56 15692 0 15692 1 0 1 1 0 8 1 knotepl 112 84 0 66 1 0 1 1 0 8 0 kqueuepl 152 72 0 70 1 0 1 1 0 8 0 pipepl 272 175 0 165 3 2 1 2 0 8 0 fdescpl 432 905 0 892 2 0 2 2 0 8 0 filepl 120 5705 0 5619 5 1 4 5 0 8 0 lockfpl 104 181 0 180 1 0 1 1 0 8 0 lockfspl 48 67 0 66 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 96 600 0 592 1 0 1 1 0 8 0 zombiepl 144 893 0 892 1 0 1 1 0 8 0 processpl 944 921 0 892 4 0 4 4 0 8 0 procpl 632 1765 0 1731 4 0 4 4 0 8 0 sosppl 144 4 0 4 1 1 0 1 0 8 0 sockpl 400 2272 0 2255 6 3 3 4 0 8 1 mcl64k 65536 40 0 40 6 6 0 1 0 8 0 mcl16k 16384 4 0 4 3 3 0 1 0 8 0 mcl12k 12288 20 0 20 5 5 0 1 0 8 0 mcl9k 9216 12 0 12 4 4 0 1 0 8 0 mcl8k 8192 27 0 27 3 3 0 1 0 8 0 mcl4k 4096 67 0 67 4 3 1 1 0 8 1 mcl2k2 2112 4 0 4 3 3 0 1 0 8 0 mcl2k 2048 95142 0 95095 15 8 7 13 0 8 0 mtagpl 96 60 0 36 3 1 2 2 0 8 1 mbufpl 256 155899 0 155728 41 18 23 25 0 8 0 bufpl 280 4789 0 124 334 0 334 334 0 8 0 anonpl 16 99829 0 81070 103 23 80 92 0 107 0 amapchunkpl 152 4682 0 4483 43 24 19 23 0 158 10 amappl16 192 4628 0 3602 76 24 52 64 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 17 0 15 1 0 1 1 0 8 0 amappl13 168 28 0 24 1 0 1 1 0 8 0 amappl12 160 22 0 19 1 0 1 1 0 8 0 amappl11 152 45 0 36 1 0 1 1 0 8 0 amappl10 144 16 0 12 1 0 1 1 0 8 0 amappl9 136 1039 0 1035 1 0 1 1 0 8 0 amappl8 128 1000 0 968 2 0 2 2 0 8 0 amappl7 120 101 0 90 1 0 1 1 0 8 0 amappl6 112 29 0 24 1 0 1 1 0 8 0 amappl5 104 880 0 868 1 0 1 1 0 8 0 amappl4 96 428 0 399 1 0 1 1 0 8 0 amappl3 88 213 0 203 1 0 1 1 0 8 0 amappl2 80 6449 0 6385 2 0 2 2 0 8 0 amappl1 72 29428 0 29024 24 15 9 17 0 8 0 amappl 80 2011 0 1953 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 37 0 6 1 0 1 1 0 8 0 uaddrrnd 24 913 0 896 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 913 0 896 1 0 1 1 0 8 0 vmmpekpl 168 8624 0 8600 2 0 2 2 0 8 0 vmmpepl 168 117168 0 115106 134 35 99 119 0 357 1 vmsppl 272 912 0 896 3 1 2 2 0 8 0 pdppl 4096 1832 0 1796 8 3 5 6 0 8 0 pvpl 32 285693 0 264029 225 41 184 212 0 265 0 pmappl 200 912 0 896 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 292 0 58 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aedb00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7800) 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(ffff80001e79f470) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d717340,7,fffffd806c3bfae0,ffff80001d6beee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066b5eea0,ffff80001d6beee8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066b5eea0,ffff80001d6beee8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066b5eea0,ffff80001d6beee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066b5eea0,ffff80001d6beee8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6beee8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6beee8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6beee8,ffff80001e79f700,ffff80001e79f750) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e79f7d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6130, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aedb00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7800) 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(ffff80001e79f470) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d717340,7,fffffd806c3bfae0,ffff80001d6beee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066b5eea0,ffff80001d6beee8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066b5eea0,ffff80001d6beee8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066b5eea0,ffff80001d6beee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066b5eea0,ffff80001d6beee8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6beee8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6beee8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6beee8,ffff80001e79f700,ffff80001e79f750) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e79f7d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6130, count: -16