uvm_fault(0xffffffff82798f10, 0xfffffffefffe000b, 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, 0xfffffffefffe000b, 0, 1) -> e in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001f79add0, count: 0 ddb> trace in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad7000) 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(ffff80001f79afb0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d80e5b0,7,fffffd806c3bf7e0,ffff80001d6bfb40) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80659f2f00,ffff80001d6bfb40) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80659f2f00,ffff80001d6bfb40) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80659f2f00,ffff80001d6bfb40) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80659f2f00,ffff80001d6bfb40) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bfb40) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bfb40,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bfb40,ffff80001f79b240,ffff80001f79b290) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001f79b310) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe38e0, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001f79ad80 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6bfb40 r8 0xffff800000ad7000 r9 0xffffffff817c4993 rt_ifa_purge+0x153 r10 0x5 r11 0xe3f240f0672e631 r12 0 r13 0x3 r14 0xfffffffefffdffff r15 0x1 rip 0xffffffff81b5242d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001f79ad20 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=93332 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=68, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6beee8,0xffffffff828678e0 process=0xffff80001d6ff638 user=0xffff80001f796000, vmspace=0xfffffd8057609230 estcpu=18, cpticks=1, pctcpu=0.5 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 41719 512230 0 0 3 0x14200 bored sosplice 43605 255409 25713 0 3 0x82 piperd syz-executor.1 25713 46184 27495 0 3 0x82 thrsleep syz-fuzzer 25713 58652 27495 0 3 0x4000082 nanosleep syz-fuzzer 25713 348309 27495 0 3 0x4000082 thrsleep syz-fuzzer 25713 236878 27495 0 3 0x4000082 thrsleep syz-fuzzer 25713 24962 27495 0 3 0x4000082 thrsleep syz-fuzzer 25713 70134 27495 0 2 0x4000002 syz-fuzzer 25713 93833 27495 0 3 0x4000082 thrsleep syz-fuzzer 27495 27313 59102 0 3 0x10008a pause ksh 59102 209019 7047 0 3 0x92 select sshd 43795 493848 1 0 3 0x100083 ttyopn getty 7047 412023 1 0 3 0x80 select sshd 9576 45802 12317 73 3 0x100090 kqread syslogd 12317 289417 1 0 3 0x100082 netio syslogd 86162 241909 1 77 2 0x100090 dhclient 67576 308798 1 0 3 0x80 poll dhclient 47296 376707 0 0 3 0x14200 bored smr 31649 354189 0 0 2 0x14200 zerothread 690 113459 0 0 3 0x14200 aiodoned aiodoned 22350 92666 0 0 3 0x14200 syncer update 36034 174696 0 0 3 0x14200 cleaner cleaner 44393 361933 0 0 3 0x14200 reaper reaper 50103 288256 0 0 3 0x14200 pgdaemon pagedaemon 7830 464194 0 0 3 0x14200 bored crynlk 95716 338538 0 0 3 0x14200 bored crypto 98858 433807 0 0 3 0x40014200 acpi0 acpi0 98244 484067 0 0 3 0x14200 bored softnet 83329 154950 0 0 2 0x14200 systqmp 12980 228439 0 0 3 0x14200 bored systq 47461 148370 0 0 3 0x40014200 bored softclock 52783 76056 0 0 3 0x40014200 idle0 1 128593 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 9499 6343K 7298K 78643K 15685 0 pcb 13 8K 8K 78643K 151 0 rtable 140 11K 14K 78643K 709 0 ifaddr 82 16K 17K 78643K 199 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 29 0 ioctlops 0 0K 4K 78643K 1534 0 iov 0 0K 32K 78643K 71 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 2489 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 19 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 351 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 1902 0 sigio 0 0K 0K 78643K 26 0 proc 49 38K 54K 78643K 479 0 subproc 23 1K 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 69 0 in_multi 43 2K 2K 78643K 130 0 ether_multi 1 0K 0K 78643K 30 0 mrt 0 0K 0K 78643K 23 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 280 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 172 91K 107K 78643K 4948 0 UVM aobj 52 4K 4K 78643K 59 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 12 0K 0K 78643K 27 0 temp 138 3872K 3936K 78643K 28357 0 kqueue 3 4K 12K 78643K 45 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 4 1 0 1 1 0 8 0 rtpcb 88 53 0 51 1 0 1 1 0 8 0 rtentry 112 72 0 28 2 0 2 2 0 8 0 unpcb 120 313 0 303 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 1808 0 1808 1 1 0 1 0 8 0 tcpcb 592 455 0 451 4 3 1 3 0 8 0 ipq 40 3 0 3 2 2 0 1 0 8 0 ipqe 40 8 0 8 2 2 0 1 0 8 0 inpcb 296 904 0 897 7 6 1 2 0 8 0 rttmr 72 10 0 10 3 3 0 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 12 0 5 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 1835 0 1825 1 0 1 1 0 8 0 pfrke_plain 160 40 0 36 1 0 1 1 0 8 0 pfrktable 1344 173 0 161 8 6 2 2 0 8 1 pftag 88 29 0 26 2 1 1 1 0 8 0 pfstitem 24 932 0 921 1 0 1 1 0 8 0 pfstkey 112 1806 0 1795 1 0 1 1 0 8 0 pfstate 328 955 0 949 1 0 1 1 0 8 0 pfrule 1360 48 0 25 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 274 0 44 15 0 15 15 0 8 0 art_table 32 275 0 44 2 0 2 2 0 8 0 art_node 16 71 0 27 1 0 1 1 0 8 0 sysvmsgpl 40 102 0 96 3 2 1 1 0 8 0 semapl 112 347 0 337 1 0 1 1 0 8 0 shmpl 112 56 0 7 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3544 0 2153 89 0 89 89 0 8 0 ffsino 240 3544 0 2153 83 0 83 83 0 8 0 nchpl 144 5992 0 4413 60 0 60 60 0 8 0 rtmask 32 34 0 33 1 0 1 1 0 8 0 uvmvnodes 72 4753 0 0 87 0 87 87 0 8 0 vnodes 208 4753 0 0 251 0 251 251 0 8 0 namei 1024 17417 0 17417 4 3 1 1 0 8 1 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 528 11 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 50 0 42 2 1 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 17934 0 17934 2 1 1 1 0 8 1 plimitpl 152 72 0 65 1 0 1 1 0 8 0 sigapl 424 2086 0 2058 4 0 4 4 0 8 0 futexpl 56 31971 0 31971 3 2 1 1 0 8 1 knotepl 112 126 0 112 1 0 1 1 0 8 0 kqueuepl 152 98 0 96 1 0 1 1 0 8 0 pipepl 272 239 0 231 2 1 1 2 0 8 0 fdescpl 432 2071 0 2058 2 0 2 2 0 8 0 filepl 120 9024 0 8942 7 3 4 4 0 8 1 lockfpl 104 190 0 189 1 0 1 1 0 8 0 lockfspl 48 79 0 78 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 122 0 112 1 0 1 1 0 8 0 ucredpl 96 876 0 869 1 0 1 1 0 8 0 zombiepl 144 2059 0 2058 2 1 1 1 0 8 0 processpl 944 2086 0 2058 4 0 4 4 0 8 0 procpl 632 4130 0 4096 4 0 4 4 0 8 0 sosppl 144 3 0 3 2 2 0 1 0 8 0 sockpl 400 2573 0 2554 10 7 3 3 0 8 0 mcl64k 65536 42 0 42 12 12 0 1 0 8 0 mcl16k 16384 5 0 5 5 5 0 1 0 8 0 mcl12k 12288 37 0 37 14 14 0 1 0 8 0 mcl9k 9216 19 0 19 10 10 0 1 0 8 0 mcl8k 8192 46 0 46 14 14 0 1 0 8 0 mcl4k 4096 150 0 150 12 11 1 1 0 8 1 mcl2k2 2112 16 0 16 11 11 0 1 0 8 0 mcl2k 2048 97249 0 97172 36 25 11 24 0 8 0 mtagpl 96 762 0 674 10 1 9 9 0 8 4 mbufpl 256 162441 0 162160 59 7 52 53 0 8 12 bufpl 280 6006 0 652 383 0 383 383 0 8 0 anonpl 16 175036 0 156234 100 20 80 91 0 107 0 amapchunkpl 152 9657 0 9459 65 56 9 22 0 158 0 amappl16 192 9339 0 8308 74 22 52 64 0 8 0 amappl15 184 17 0 16 1 0 1 1 0 8 0 amappl14 176 2 0 0 1 0 1 1 0 8 0 amappl13 168 1698 0 1693 1 0 1 1 0 8 0 amappl12 160 24 0 21 1 0 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 38 0 33 1 0 1 1 0 8 0 amappl9 136 355 0 353 1 0 1 1 0 8 0 amappl8 128 392 0 325 3 0 3 3 0 8 0 amappl7 120 117 0 104 1 0 1 1 0 8 0 amappl6 112 36 0 26 1 0 1 1 0 8 0 amappl5 104 1992 0 1981 1 0 1 1 0 8 0 amappl4 96 2088 0 2059 1 0 1 1 0 8 0 amappl3 88 172 0 164 1 0 1 1 0 8 0 amappl2 80 15640 0 15574 2 0 2 2 0 8 0 amappl1 72 52513 0 52083 23 14 9 17 0 8 0 amappl 80 4398 0 4337 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 58 0 7 1 0 1 1 0 8 0 uaddrrnd 24 2082 0 2062 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2082 0 2062 1 0 1 1 0 8 0 vmmpekpl 168 15881 0 15858 2 0 2 2 0 8 0 vmmpepl 168 249915 0 247773 151 54 97 125 0 357 2 vmsppl 272 2081 0 2062 3 1 2 2 0 8 0 pdppl 4096 4170 0 4131 7 1 6 6 0 8 0 pvpl 32 504748 0 482328 246 62 184 211 0 265 0 pmappl 200 2081 0 2062 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 362 0 92 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad7000) 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(ffff80001f79afb0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d80e5b0,7,fffffd806c3bf7e0,ffff80001d6bfb40) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80659f2f00,ffff80001d6bfb40) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80659f2f00,ffff80001d6bfb40) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80659f2f00,ffff80001d6bfb40) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80659f2f00,ffff80001d6bfb40) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bfb40) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bfb40,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bfb40,ffff80001f79b240,ffff80001f79b290) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001f79b310) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe38e0, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad7000) 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(ffff80001f79afb0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d80e5b0,7,fffffd806c3bf7e0,ffff80001d6bfb40) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80659f2f00,ffff80001d6bfb40) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80659f2f00,ffff80001d6bfb40) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80659f2f00,ffff80001d6bfb40) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80659f2f00,ffff80001d6bfb40) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bfb40) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bfb40,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bfb40,ffff80001f79b240,ffff80001f79b290) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001f79b310) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe38e0, count: -16