uvm_fault(0xffffffff82798f10, 0xffffffff0000000b, 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, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d788db0, count: 0 ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000afdd00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7000) 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(ffff80001d788f90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d7818f0,7,fffffd806c3bf900,ffff80001d6be508) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80573e66a0,ffff80001d6be508) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80573e66a0,ffff80001d6be508) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80573e66a0,ffff80001d6be508) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80573e66a0,ffff80001d6be508) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be508) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be508,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6be508,ffff80001d789220,ffff80001d789270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d7892f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc050, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d788d60 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6be508 r8 0xffff800000afdd00 r9 0xffffffff817c4993 rt_ifa_purge+0x153 r10 0x5 r11 0x85d68f31e8c91b57 r12 0 r13 0x3 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff81b5242d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d788d00 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=188574 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001e7bb8d0,0xffff80001d6bf660 process=0xffff80001e82cb40 user=0xffff80001d784000, vmspace=0xfffffd805c4a5dd8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40139 72262 37169 0 2 0 syz-executor.1 37169 106780 53844 0 3 0x82 nanosleep syz-executor.1 14297 186484 0 0 3 0x14200 acct acct 97578 424782 0 0 3 0x14280 nfsidl nfsio 12288 270614 0 0 3 0x14280 nfsidl nfsio 56368 7179 0 0 3 0x14280 nfsidl nfsio 63073 281239 0 0 3 0x14280 nfsidl nfsio 6771 416377 0 0 3 0x14280 nfsidl nfsio 88417 33326 0 0 3 0x14280 nfsidl nfsio 42045 491516 0 0 3 0x14280 nfsidl nfsio 17857 14873 0 0 3 0x14280 nfsidl nfsio 31468 38165 0 0 3 0x14280 nfsidl nfsio 22444 32610 0 0 3 0x14280 nfsidl nfsio 29553 492632 0 0 3 0x14280 nfsidl nfsio 93263 135945 0 0 3 0x14280 nfsidl nfsio 45015 52303 0 0 3 0x14280 nfsidl nfsio 65613 153048 0 0 3 0x14280 nfsidl nfsio 60432 250933 0 0 3 0x14280 nfsidl nfsio 59370 94931 0 0 3 0x14280 nfsidl nfsio 95793 332881 0 0 3 0x14280 nfsidl nfsio 22904 467026 0 0 3 0x14280 nfsidl nfsio 51205 35732 0 0 3 0x14280 nfsidl nfsio 89996 263564 0 0 3 0x14280 nfsidl nfsio 67122 28828 0 0 3 0x14200 bored sosplice 53844 58808 53032 0 3 0x82 thrsleep syz-fuzzer 53844 390850 53032 0 3 0x4000082 nanosleep syz-fuzzer 53844 337887 53032 0 3 0x4000082 thrsleep syz-fuzzer 53844 482791 53032 0 3 0x4000082 thrsleep syz-fuzzer 53844 393227 53032 0 3 0x4000082 thrsleep syz-fuzzer 53844 236879 53032 0 2 0x4000002 syz-fuzzer 53844 123397 53032 0 3 0x4000082 thrsleep syz-fuzzer 53032 501231 45610 0 3 0x10008a pause ksh 45610 121247 27895 0 3 0x92 select sshd 91117 281509 1 0 3 0x100083 ttyin getty 27895 465786 1 0 3 0x80 select sshd 14348 83972 78206 73 3 0x100090 kqread syslogd 78206 169105 1 0 3 0x100082 netio syslogd 62944 39958 1 77 2 0x100090 dhclient 10714 341312 1 0 3 0x80 poll dhclient 91698 95238 0 0 3 0x14200 bored smr 63010 60656 0 0 2 0x14200 zerothread 42068 66198 0 0 3 0x14200 aiodoned aiodoned 86178 364444 0 0 3 0x14200 syncer update 44841 93308 0 0 3 0x14200 cleaner cleaner 89518 378574 0 0 3 0x14200 reaper reaper 94689 382822 0 0 3 0x14200 pgdaemon pagedaemon 66787 293746 0 0 3 0x14200 bored crynlk 47591 438996 0 0 3 0x14200 bored crypto 17623 353480 0 0 3 0x40014200 acpi0 acpi0 62289 500479 0 0 3 0x14200 bored softnet 72847 331561 0 0 2 0x14200 systqmp 17286 39173 0 0 3 0x14200 bored systq 94342 494882 0 0 3 0x40014200 bored softclock 88772 298655 0 0 3 0x40014200 idle0 1 347459 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 9487 6354K 6719K 78643K 11349 0 pcb 13 8K 8K 78643K 77 0 rtable 98 6K 8K 78643K 534 0 ifaddr 76 16K 17K 78643K 190 0 counters 21 16K 16K 78643K 31 0 ioctlops 0 0K 4K 78643K 104 0 iov 0 0K 16K 78643K 70 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 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 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 146 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 654 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 55K 78643K 437 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 66 0 in_multi 79 4K 4K 78643K 164 0 ether_multi 1 0K 0K 78643K 18 0 mrt 0 0K 0K 78643K 3 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 228 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 137 25K 41K 78643K 2363 0 UVM aobj 37 2K 2K 78643K 37 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 70 0 NDP 10 0K 0K 78643K 32 0 temp 132 3884K 3948K 78643K 33215 0 kqueue 3 4K 9K 78643K 41 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 5 1 0 1 1 0 8 0 rtpcb 88 47 0 45 1 0 1 1 0 8 0 rtentry 112 67 0 34 2 0 2 2 0 8 0 unpcb 120 321 0 313 1 0 1 1 0 8 0 syncache 272 9 0 9 4 3 1 1 0 8 1 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 204 0 204 3 2 1 2 0 8 1 tcpcb 592 213 0 200 5 3 2 2 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 47 0 46 1 0 1 1 0 8 0 inpcb 296 573 0 565 4 2 2 2 0 8 1 nd6 48 17 0 11 1 0 1 1 0 8 0 pkpcb 40 18 0 18 3 2 1 1 0 8 1 pfosfp 40 3 0 0 1 0 1 1 0 8 0 pfosfpen 112 3 0 0 1 0 1 1 0 8 0 pfrktable 1344 97 0 90 2 1 1 1 0 8 0 pftag 88 18 0 16 2 1 1 1 0 8 0 pfrule 1360 26 0 14 3 1 2 2 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 291 0 102 14 2 12 14 0 8 0 art_table 32 293 0 102 2 0 2 2 0 8 0 art_node 16 66 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 9 2 1 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 144 0 134 1 0 1 1 0 8 0 shmpl 112 34 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2230 0 837 88 0 88 88 0 8 0 ffsino 240 2230 0 837 83 0 83 83 0 8 0 nchpl 144 3777 0 2197 60 0 60 60 0 8 0 uvmvnodes 72 2452 0 0 45 0 45 45 0 8 0 vnodes 208 2452 0 0 130 0 130 130 0 8 0 namei 1024 10036 0 10036 1 0 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 34 0 28 2 1 1 1 0 8 0 scxspl 200 10116 0 10116 1 0 1 1 0 8 1 plimitpl 152 70 0 63 1 0 1 1 0 8 0 sigapl 424 859 0 809 6 0 6 6 0 8 0 futexpl 56 12315 0 12315 1 0 1 1 0 8 1 knotepl 112 122 0 108 1 0 1 1 0 8 0 kqueuepl 152 72 0 68 1 0 1 1 0 8 0 pipepl 272 179 0 171 4 3 1 2 0 8 0 fdescpl 432 823 0 809 2 0 2 2 0 8 0 filepl 120 5191 0 5109 6 2 4 5 0 8 1 lockfpl 104 135 0 134 1 0 1 1 0 8 0 lockfspl 48 46 0 45 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 559 0 552 1 0 1 1 0 8 0 zombiepl 144 810 0 809 1 0 1 1 0 8 0 processpl 944 859 0 809 7 0 7 7 0 8 0 procpl 632 1600 0 1544 6 0 6 6 0 8 1 sosppl 144 6 0 6 1 1 0 1 0 8 0 sockpl 400 961 0 943 7 3 4 4 0 8 1 mcl64k 65536 28 0 28 3 2 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 20 0 20 2 1 1 1 0 8 1 mcl9k 9216 12 0 12 3 2 1 1 0 8 1 mcl8k 8192 19 0 19 3 2 1 1 0 8 1 mcl4k 4096 62 0 62 3 2 1 1 0 8 1 mcl2k2 2112 3 0 3 3 3 0 1 0 8 0 mcl2k 2048 95519 0 95479 24 18 6 22 0 8 0 mtagpl 96 64 0 55 2 1 1 1 0 8 0 mbufpl 256 154524 0 154416 30 9 21 22 0 8 8 bufpl 280 4667 0 116 326 0 326 326 0 8 0 anonpl 16 93584 0 76482 92 8 84 87 0 107 0 amapchunkpl 152 4094 0 3900 22 12 10 22 0 158 1 amappl16 192 3799 0 2704 62 6 56 58 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 2 0 1 1 0 1 1 0 8 0 amappl13 168 337 0 332 1 0 1 1 0 8 0 amappl12 160 326 0 322 1 0 1 1 0 8 0 amappl11 152 48 0 39 1 0 1 1 0 8 0 amappl10 144 69 0 62 1 0 1 1 0 8 0 amappl9 136 603 0 601 1 0 1 1 0 8 0 amappl8 128 326 0 291 2 0 2 2 0 8 0 amappl7 120 162 0 148 1 0 1 1 0 8 0 amappl6 112 35 0 25 1 0 1 1 0 8 0 amappl5 104 472 0 461 1 0 1 1 0 8 0 amappl4 96 737 0 710 1 0 1 1 0 8 0 amappl3 88 448 0 439 1 0 1 1 0 8 0 amappl2 80 5750 0 5678 2 0 2 2 0 8 0 amappl1 72 27531 0 27118 23 14 9 17 0 8 0 amappl 80 1855 0 1797 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 36 0 0 1 0 1 1 0 8 0 uaddrrnd 24 829 0 811 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 829 0 811 1 0 1 1 0 8 0 vmmpekpl 168 8494 0 8465 2 0 2 2 0 8 0 vmmpepl 168 107256 0 105006 159 20 139 141 0 357 41 vmsppl 272 828 0 811 2 0 2 2 0 8 0 pdppl 4096 1664 0 1626 7 1 6 6 0 8 0 pvpl 32 275588 0 255935 208 19 189 204 0 265 0 pmappl 200 828 0 811 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 284 0 50 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000afdd00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7000) 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(ffff80001d788f90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d7818f0,7,fffffd806c3bf900,ffff80001d6be508) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80573e66a0,ffff80001d6be508) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80573e66a0,ffff80001d6be508) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80573e66a0,ffff80001d6be508) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80573e66a0,ffff80001d6be508) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be508) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be508,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6be508,ffff80001d789220,ffff80001d789270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d7892f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc050, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000afdd00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7000) 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(ffff80001d788f90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d7818f0,7,fffffd806c3bf900,ffff80001d6be508) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80573e66a0,ffff80001d6be508) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80573e66a0,ffff80001d6be508) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80573e66a0,ffff80001d6be508) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80573e66a0,ffff80001d6be508) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be508) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be508,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6be508,ffff80001d789220,ffff80001d789270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d7892f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc050, count: -16