uvm_fault(0xfffffd806bc09550, 0x1000b, 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(0xfffffd806bc09550, 0x1000b, 0, 1) -> e in_delmulti(ffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7c2b70, count: 0 ddb> trace in_delmulti(ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2a500) 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(ffff80001e7c2d50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d752b60,7,fffffd806c3bf9c0,ffff80001d6aa5f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057456d30,ffff80001d6aa5f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057456d30,ffff80001d6aa5f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057456d30,ffff80001d6aa5f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057456d30,ffff80001d6aa5f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa5f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa5f8,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa5f8,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa5f8,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa5f8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7c31d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7c31d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef4c0, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e7c2b20 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x5cce3a58e8e110b1 r11 0xb24f12acae70a9af r12 0 r13 0x3 r14 0xffff __ALIGN_SIZE+0xefff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7c2ac0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=198448 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a99c8,0xffff80001d71d880 process=0xffff80001d6c55d0 user=0xffff80001e7be000, vmspace=0xfffffd806bc09550 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 21563 90408 0 0 3 0x14200 bored sosplice 50872 503124 1 0 3 0x100083 ttyin getty 54361 500194 0 0 3 0x14200 acct acct 12652 474551 0 0 3 0x14280 nfsidl nfsio 34662 29678 0 0 3 0x14280 nfsidl nfsio 73857 344536 0 0 3 0x14280 nfsidl nfsio 63831 456192 0 0 3 0x14280 nfsidl nfsio 91043 139816 0 0 3 0x14280 nfsidl nfsio 77704 117885 0 0 3 0x14280 nfsidl nfsio 95635 235398 0 0 3 0x14280 nfsidl nfsio 88831 272780 0 0 3 0x14280 nfsidl nfsio 14344 138879 0 0 3 0x14280 nfsidl nfsio 59077 40016 0 0 3 0x14280 nfsidl nfsio 68170 99379 0 0 3 0x14280 nfsidl nfsio 78058 321015 0 0 3 0x14280 nfsidl nfsio 56012 387156 0 0 3 0x14280 nfsidl nfsio 13062 513528 0 0 3 0x14280 nfsidl nfsio 97363 253568 0 0 3 0x14280 nfsidl nfsio 87177 176432 0 0 3 0x14280 nfsidl nfsio 47889 503936 0 0 3 0x14280 nfsidl nfsio 81193 12172 0 0 3 0x14280 nfsidl nfsio 56318 374252 0 0 3 0x14280 nfsidl nfsio 5227 167001 0 0 3 0x14280 nfsidl nfsio 79520 502715 19310 0 3 0x82 thrsleep syz-fuzzer 79520 116994 19310 0 3 0x4000082 thrsleep syz-fuzzer 79520 124779 19310 0 3 0x4000082 thrsleep syz-fuzzer 79520 101048 19310 0 3 0x4000082 thrsleep syz-fuzzer 79520 344176 19310 0 3 0x4000082 thrsleep syz-fuzzer 79520 277627 19310 0 3 0x4000082 kqread syz-fuzzer 79520 431684 19310 0 3 0x4000082 thrsleep syz-fuzzer 79520 199181 19310 0 3 0x4000082 thrsleep syz-fuzzer 79520 311816 19310 0 3 0x4000082 thrsleep syz-fuzzer 19310 254574 24594 0 3 0x10008a pause ksh 24594 249738 65962 0 3 0x92 select sshd 65962 138325 1 0 3 0x80 select sshd 79231 281187 801 73 3 0x100010 ffs_fsync syslogd 801 348655 1 0 3 0x100082 netio syslogd 14206 519662 1 77 3 0x100090 poll dhclient 10827 496376 1 0 3 0x80 poll dhclient 65202 510460 0 0 3 0x14200 bored smr 47026 266124 0 0 3 0x14200 pgzero zerothread 81800 113241 0 0 3 0x14200 aiodoned aiodoned 14432 324950 0 0 3 0x14200 syncer update 26315 371381 0 0 3 0x14200 cleaner cleaner 93267 131326 0 0 3 0x14200 reaper reaper 12701 424182 0 0 3 0x14200 pgdaemon pagedaemon 46544 512675 0 0 3 0x14200 bored crynlk 25140 181344 0 0 3 0x14200 bored crypto 43375 286503 0 0 3 0x40014200 acpi0 acpi0 15358 399979 0 0 3 0x14200 bored softnet 10281 84726 0 0 3 0x14200 bored systqmp 1999 32091 0 0 3 0x14200 bored systq 7038 37244 0 0 3 0x40014200 bored softclock 40937 113506 0 0 3 0x40014200 idle0 1 168244 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 9525 6376K 6748K 78643K 11685 0 pcb 13 8K 8K 78643K 143 0 rtable 147 21K 23K 78643K 820 0 ifaddr 125 25K 26K 78643K 286 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 31 0 ioctlops 0 0K 4K 78643K 171 0 iov 0 0K 16K 78643K 117 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1549 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 0K 0K 78643K 2 0 sem 11 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 900 0 sigio 0 0K 0K 78643K 46 0 proc 50 38K 54K 78643K 449 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 71 0 in_multi 135 5K 5K 78643K 312 0 ether_multi 1 0K 0K 78643K 27 0 mrt 0 0K 0K 78643K 11 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 247 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 138 72K 74K 78643K 2924 0 UVM aobj 48 2K 2K 78643K 51 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 132 0 NDP 15 0K 0K 78643K 49 0 temp 148 3874K 3938K 78643K 7605 0 kqueue 3 4K 8K 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 9 0 1 1 0 1 1 0 8 0 rtpcb 80 45 0 43 1 0 1 1 0 8 0 rtentry 112 117 0 75 2 0 2 2 0 8 0 unpcb 120 560 0 551 1 0 1 1 0 8 0 syncache 264 16 0 16 5 5 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 544 1317 0 1313 7 6 1 5 0 8 0 ipq 40 74 0 74 1 1 0 1 0 8 0 ipqe 40 222 0 222 1 1 0 1 0 8 0 inpcb 296 1859 0 1852 2 1 1 2 0 8 0 rttmr 72 4 0 4 1 1 0 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 48 35 0 32 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 3 0 3 3 3 0 1 0 8 0 pfstscr 40 6 0 5 1 0 1 1 0 8 0 pfrktable 1344 180 0 162 3 1 2 2 0 8 0 pftag 88 34 0 28 3 2 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 12 0 10 1 0 1 1 0 8 0 pfstate 328 6 0 5 1 0 1 1 0 8 0 pfrule 1360 58 0 32 3 0 3 3 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 510 0 320 17 4 13 16 0 8 0 art_table 32 512 0 320 2 0 2 2 0 8 0 art_node 16 116 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 48 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2594 0 1199 88 0 88 88 0 8 0 ffsino 240 2594 0 1199 83 0 83 83 0 8 0 nchpl 144 4036 0 2444 60 0 60 60 0 8 0 uvmvnodes 72 2870 0 0 53 0 53 53 0 8 0 vnodes 208 2870 0 0 152 0 152 152 0 8 0 namei 1024 10834 0 10834 1 1 0 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 72 0 54 2 1 1 1 0 8 0 scxspl 192 12191 0 12190 1 0 1 1 0 8 0 plimitpl 152 72 0 64 1 0 1 1 0 8 0 sigapl 424 1109 0 1060 6 0 6 6 0 8 0 futexpl 56 19611 0 19611 2 2 0 1 0 8 0 knotepl 112 85 0 70 1 0 1 1 0 8 0 kqueuepl 144 107 0 105 1 0 1 1 0 8 0 pipepl 272 158 0 150 1 0 1 1 0 8 0 fdescpl 432 1073 0 1060 2 0 2 2 0 8 0 filepl 120 6540 0 6467 5 2 3 5 0 8 0 lockfpl 104 165 0 164 1 0 1 1 0 8 0 lockfspl 48 64 0 63 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 751 0 744 1 0 1 1 0 8 0 zombiepl 144 1062 0 1058 1 0 1 1 0 8 0 processpl 928 1109 0 1058 7 0 7 7 0 8 0 procpl 624 2168 0 2109 6 1 5 6 0 8 0 sosppl 128 8 0 8 2 2 0 1 0 8 0 sockpl 400 2474 0 2454 9 6 3 5 0 8 0 mcl64k 65536 590 0 590 33 33 0 33 0 8 0 mcl16k 16384 11 0 11 2 2 0 1 0 8 0 mcl12k 12288 27 0 27 2 2 0 1 0 8 0 mcl9k 9216 14 0 14 3 3 0 1 0 8 0 mcl8k 8192 25 0 25 3 3 0 1 0 8 0 mcl4k 4096 78 0 78 2 2 0 1 0 8 0 mcl2k2 2112 8 0 8 2 2 0 1 0 8 0 mcl2k 2048 93289 0 93247 13 6 7 12 0 8 0 mtagpl 96 111 0 111 4 1 3 3 0 8 3 mbufpl 256 167072 0 166999 151 117 34 113 0 8 13 bufpl 280 5996 0 644 383 0 383 383 0 8 0 anonpl 16 139492 0 122823 102 16 86 87 0 107 13 amapchunkpl 152 5456 0 5326 25 9 16 16 0 158 9 amappl16 192 5588 0 4623 79 30 49 61 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 32 0 26 1 0 1 1 0 8 0 amappl13 168 436 0 432 1 0 1 1 0 8 0 amappl12 160 420 0 416 2 1 1 1 0 8 0 amappl11 152 49 0 39 1 0 1 1 0 8 0 amappl10 144 19 0 13 1 0 1 1 0 8 0 amappl9 136 837 0 835 1 0 1 1 0 8 0 amappl8 128 810 0 761 2 0 2 2 0 8 0 amappl7 120 109 0 96 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 1012 0 1001 1 0 1 1 0 8 0 amappl4 96 446 0 413 1 0 1 1 0 8 0 amappl3 88 131 0 126 1 0 1 1 0 8 0 amappl2 80 8197 0 8137 2 0 2 2 0 8 0 amappl1 72 32884 0 32490 23 14 9 17 0 8 0 amappl 80 2403 0 2361 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 50 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1081 0 1063 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1081 0 1063 1 0 1 1 0 8 0 vmmpekpl 168 10020 0 9985 2 0 2 2 0 8 0 vmmpepl 168 137126 0 135137 140 42 98 120 0 357 3 vmsppl 272 1080 0 1063 3 1 2 2 0 8 0 pdppl 4096 2168 0 2131 8 2 6 6 0 8 0 pvpl 32 386125 0 366434 325 29 296 310 0 265 127 pmappl 200 1080 0 1063 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 437 0 186 11 2 9 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2a500) 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(ffff80001e7c2d50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d752b60,7,fffffd806c3bf9c0,ffff80001d6aa5f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057456d30,ffff80001d6aa5f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057456d30,ffff80001d6aa5f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057456d30,ffff80001d6aa5f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057456d30,ffff80001d6aa5f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa5f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa5f8,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa5f8,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa5f8,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa5f8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7c31d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7c31d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef4c0, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(ffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2a500) 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(ffff80001e7c2d50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d752b60,7,fffffd806c3bf9c0,ffff80001d6aa5f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057456d30,ffff80001d6aa5f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057456d30,ffff80001d6aa5f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057456d30,ffff80001d6aa5f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057456d30,ffff80001d6aa5f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa5f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa5f8,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa5f8,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa5f8,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa5f8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7c31d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7c31d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef4c0, count: -17