uvm_fault(0xfffffd807efff8a0, 0xe7, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807efff8a0, 0xe7, 0, 1) -> e in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800023f0db30, count: 0 ddb{1}> trace in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b07100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000af4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800023f0dd10) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ecfb1a8,7,fffffd807f7bf7e0,ffff800023102138) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80665deb60,ffff800023102138) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80665deb60,ffff800023102138) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80665deb60,ffff800023102138) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80665deb60,ffff800023102138) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023102138) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023102138,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023102138,ffff800023f0dfa0,ffff800023f0dff0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f0e070) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f0e070) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcfbb0, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023f0dae0 rbx 0 rdx 0xffff800023102138 rcx 0 rax 0 r8 0xffffffff81636133 rt_ifa_purge+0x153 r9 0x5 r10 0x3 r11 0xf7899b057ecfee12 r12 0 r13 0x3 r14 0xdb r15 0x1 rip 0xffffffff811e3b6d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f0da80 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=153909 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e03768,0xffff800023101038 process=0xffff800023f6e030 user=0xffff800023f09000, vmspace=0xfffffd807efff8a0 estcpu=36, cpticks=8, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61251 471692 54258 0 2 0 syz-executor.0 2796 76770 0 0 3 0x14200 bored sosplice 9888 395228 0 0 3 0x14280 nfsidl nfsio 96599 396814 0 0 3 0x14280 nfsidl nfsio 63202 289745 0 0 3 0x14280 nfsidl nfsio 68627 213324 0 0 3 0x14280 nfsidl nfsio 81304 484613 0 0 3 0x14280 nfsidl nfsio 50528 401092 0 0 3 0x14280 nfsidl nfsio 93910 88780 0 0 3 0x14280 nfsidl nfsio 82379 228101 0 0 3 0x14280 nfsidl nfsio 33590 477958 0 0 3 0x14280 nfsidl nfsio 30795 251250 0 0 3 0x14280 nfsidl nfsio 50803 8831 0 0 3 0x14280 nfsidl nfsio 93872 9654 0 0 3 0x14280 nfsidl nfsio 12413 59312 0 0 3 0x14280 nfsidl nfsio 79966 97391 0 0 3 0x14280 nfsidl nfsio 86013 85108 0 0 3 0x14280 nfsidl nfsio 14320 52284 0 0 3 0x14280 nfsidl nfsio 20030 125663 0 0 3 0x14280 nfsidl nfsio 73213 30842 0 0 3 0x14280 nfsidl nfsio 55171 332347 0 0 3 0x14280 nfsidl nfsio 43475 419067 0 0 3 0x14280 nfsidl nfsio 54258 478216 67166 0 2 0x2 syz-executor.0 67166 139732 9264 0 2 0x2 syz-fuzzer 67166 104350 9264 0 3 0x4000082 nanosleep syz-fuzzer 67166 374448 9264 0 3 0x4000082 thrsleep syz-fuzzer 67166 131958 9264 0 3 0x4000082 kqread syz-fuzzer 67166 192207 9264 0 3 0x4000082 thrsleep syz-fuzzer 67166 110930 9264 0 3 0x4000082 thrsleep syz-fuzzer 67166 435937 9264 0 3 0x4000082 thrsleep syz-fuzzer 67166 317249 9264 0 3 0x4000082 thrsleep syz-fuzzer 67166 308499 9264 0 7 0x4000002 syz-fuzzer 67166 468087 9264 0 3 0x4000082 thrsleep syz-fuzzer 9264 130300 85248 0 3 0x10008a pause ksh 85248 385346 78769 0 3 0x92 select sshd 14825 381650 1 0 3 0x100083 ttyin getty 78769 5535 1 0 3 0x80 select sshd 34130 355932 25856 74 3 0x100092 bpf pflogd 25856 421717 1 0 3 0x80 netio pflogd 69552 29440 79351 73 3 0x100090 kqread syslogd 79351 378405 1 0 3 0x100082 netio syslogd 66196 457502 1 77 2 0x100090 dhclient 56825 147700 1 0 3 0x80 poll dhclient 86552 391012 0 0 3 0x14200 bored smr 74247 214400 0 0 2 0x14200 zerothread 71494 50885 0 0 3 0x14200 aiodoned aiodoned 97086 153533 0 0 3 0x14200 syncer update 2709 110489 0 0 3 0x14200 cleaner cleaner 30158 392714 0 0 3 0x14200 reaper reaper 26077 119665 0 0 3 0x14200 pgdaemon pagedaemon 3143 1797 0 0 3 0x14200 bored crynlk 98432 408747 0 0 3 0x14200 bored crypto 36124 57744 0 0 3 0x40014200 acpi0 acpi0 2658 430277 0 0 3 0x40014200 idle1 28192 156093 0 0 3 0x14200 bored softnet 75963 81149 0 0 2 0x14200 systqmp 25779 226692 0 0 3 0x14200 bored systq 13806 344871 0 0 3 0x40014200 bored softclock 96923 349013 0 0 3 0x40014200 idle0 1 503328 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9488 6411K 6796K 78643K 11188 0 pcb 13 8K 8K 78643K 47 0 rtable 98 4K 7K 78643K 453 0 ifaddr 58 13K 14K 78643K 144 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 8K 78643K 1537 0 iov 0 0K 12K 78643K 29 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1343 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 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 385 0 sigio 0 0K 0K 78643K 5 0 proc 61 63K 95K 78643K 473 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 48 0 in_multi 48 2K 2K 78643K 139 0 ether_multi 1 0K 0K 78643K 4 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 218 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 128 39K 41K 78643K 2187 0 UVM aobj 21 2K 2K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 24 0 NDP 8 0K 0K 78643K 31 0 temp 94 3860K 3949K 78643K 8852 0 kqueue 3 4K 8K 78643K 12 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 25 0 23 1 0 1 1 0 8 0 rtentry 112 91 0 54 2 0 2 2 0 8 0 unpcb 120 293 0 283 1 0 1 1 0 8 0 syncache 264 9 0 9 4 3 1 1 0 8 1 tcpqe 32 571 0 571 2 2 0 1 0 8 0 tcpcb 544 96 0 87 2 1 1 2 0 8 0 inpcb 296 408 0 401 3 2 1 2 0 8 0 nd6 48 25 0 22 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 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 57 0 55 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 14 0 8 1 0 1 1 0 8 0 pfstkey 112 14 0 8 1 0 1 1 0 8 0 pfstate 328 14 0 8 2 1 1 2 0 8 0 pfrule 1360 36 0 27 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 381 0 223 13 3 10 13 0 8 0 art_table 32 382 0 223 2 0 2 2 0 8 0 art_node 16 89 0 51 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 20 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1851 0 450 90 1 89 89 0 8 0 ffsino 272 1851 0 450 94 0 94 94 0 8 0 nchpl 144 2575 0 987 60 0 60 60 0 8 0 uvmvnodes 72 1994 0 0 37 0 37 37 0 8 0 vnodes 208 1994 0 0 105 0 105 105 0 8 0 namei 1024 7142 0 7142 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 15 0 15 4 4 0 1 0 8 0 scxspl 192 8466 0 8466 11 9 2 7 0 8 2 plimitpl 152 34 0 26 1 0 1 1 0 8 0 sigapl 424 621 0 569 6 0 6 6 0 8 0 futexpl 56 5017 0 5017 1 0 1 1 0 8 1 knotepl 112 69 0 56 1 0 1 1 0 8 0 kqueuepl 144 53 0 51 1 0 1 1 0 8 0 pipepl 304 135 0 128 4 2 2 2 0 8 1 fdescpl 496 585 0 569 3 0 3 3 0 8 0 filepl 152 3274 0 3189 6 1 5 6 0 8 1 lockfpl 104 57 0 56 1 0 1 1 0 8 0 lockfspl 48 24 0 23 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 244 0 235 1 0 1 1 0 8 0 zombiepl 144 570 0 569 1 0 1 1 0 8 0 processpl 992 621 0 569 7 0 7 7 0 8 0 procpl 624 1409 0 1348 6 0 6 6 0 8 0 sosppl 128 7 0 7 2 2 0 1 0 8 0 sockpl 400 728 0 709 6 2 4 4 0 8 2 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 193 0 0 24 0 24 24 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 238 0 0 14 0 14 14 0 8 0 bufpl 280 4099 0 134 284 0 284 284 0 8 0 anonpl 16 86877 0 67083 99 12 87 87 0 124 7 amapchunkpl 152 3387 0 3234 12 2 10 12 0 158 2 amappl16 192 3238 0 2157 73 18 55 59 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 209 0 205 1 0 1 1 0 8 0 amappl12 160 197 0 191 1 0 1 1 0 8 0 amappl11 152 229 0 213 1 0 1 1 0 8 0 amappl10 144 21 0 16 1 0 1 1 0 8 0 amappl9 136 384 0 382 1 0 1 1 0 8 0 amappl8 128 353 0 319 2 0 2 2 0 8 0 amappl7 120 117 0 104 1 0 1 1 0 8 0 amappl6 112 194 0 191 1 0 1 1 0 8 0 amappl5 104 496 0 479 1 0 1 1 0 8 0 amappl4 96 492 0 460 1 0 1 1 0 8 0 amappl3 88 125 0 119 1 0 1 1 0 8 0 amappl2 80 3916 0 3847 2 0 2 2 0 8 0 amappl1 72 25859 0 25395 23 13 10 18 0 8 0 amappl 80 1648 0 1603 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 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 589 0 571 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 589 0 571 1 0 1 1 0 8 0 vmmpekpl 168 8280 0 8238 3 0 3 3 0 8 0 vmmpepl 168 82743 0 80459 134 25 109 120 0 357 7 vmsppl 368 588 0 571 2 0 2 2 0 8 0 pdppl 4096 1185 0 1144 6 0 6 6 0 8 0 pvpl 32 273176 0 249760 221 11 210 210 0 265 19 pmappl 232 588 0 571 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 10 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82722ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff8292ee60) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292ee60) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_map_inentry(ffff800020ddc4e8,ffff800020ddc548,c00003b738,ffffffff8242a59e,ffffffff812a1c30,65) at uvm_map_inentry+0xbe sys/uvm/uvm_map.c:1890 syscall(ffff800020e9c600) at syscall+0x397 mi_syscall sys/sys/syscall_mi.h:81 [inline] syscall(ffff800020e9c600) at syscall+0x397 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00003b750, count: -7 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b07100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000af4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800023f0dd10) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ecfb1a8,7,fffffd807f7bf7e0,ffff800023102138) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80665deb60,ffff800023102138) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80665deb60,ffff800023102138) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80665deb60,ffff800023102138) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80665deb60,ffff800023102138) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023102138) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023102138,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023102138,ffff800023f0dfa0,ffff800023f0dff0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f0e070) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f0e070) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcfbb0, count: -16