uvm_fault(0xfffffd807effe8a0, 0xe7, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807effe8a0, 0xe7, 0, 1) -> e in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800020ee2110, count: 0 ddb{0}> trace in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b31b00) 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+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800020ee22f0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2ff4e8,7,fffffd807f7bf960,ffff800020dd64f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806caa4ee8,ffff800020dd64f8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806caa4ee8,ffff800020dd64f8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806caa4ee8,ffff800020dd64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806caa4ee8,ffff800020dd64f8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dd64f8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dd64f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dd64f8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dd64f8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dd64f8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ee2770) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ee2770) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd68e0, count: -17 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020ee20c0 rbx 0 rdx 0 rcx 0 rax 0xffff800020dd64f8 r8 0xffff800000b31b00 r9 0xffffffff8158de33 rt_ifa_purge+0x153 r10 0x5 r11 0x45fe24a892de7f1f r12 0 r13 0x8da1216f __kernel_virt_to_phys+0xda1216f r14 0xdb r15 0x1 rip 0xffffffff8120951d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ee2060 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=485299 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020dd69e8,0xffff800020e913e8 process=0xffff800020df0400 user=0xffff800020edd000, vmspace=0xfffffd807effe8a0 estcpu=36, cpticks=6, pctcpu=0.51 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46274 496323 0 0 3 0x14200 bored sosplice 63633 169094 42995 0 3 0x82 nanosleep syz-executor.1 42995 258011 32632 0 3 0x82 thrsleep syz-fuzzer 42995 135260 32632 0 3 0x4000082 thrsleep syz-fuzzer 42995 64107 32632 0 3 0x4000082 thrsleep syz-fuzzer 42995 394799 32632 0 3 0x4000082 thrsleep syz-fuzzer 42995 242022 32632 0 3 0x4000082 thrsleep syz-fuzzer 42995 271761 32632 0 3 0x4000082 thrsleep syz-fuzzer 42995 177459 32632 0 3 0x4000082 thrsleep syz-fuzzer 42995 242598 32632 0 3 0x4000082 kqread syz-fuzzer 32632 11654 51344 0 3 0x10008a pause ksh 51344 481065 65255 0 3 0x92 select sshd 66077 160219 1 0 3 0x100083 ttyin getty 65255 35197 1 0 3 0x80 select sshd 31094 106935 40959 74 3 0x100092 bpf pflogd 40959 410602 1 0 3 0x80 netio pflogd 83682 313868 30187 73 3 0x100090 kqread syslogd 30187 377984 1 0 3 0x100082 netio syslogd 29931 523840 1 77 3 0x100090 poll dhclient 98341 404817 1 0 3 0x80 poll dhclient 46114 437904 0 0 3 0x14200 bored smr 85466 331270 0 0 3 0x14200 pgzero zerothread 46109 238381 0 0 3 0x14200 aiodoned aiodoned 5142 13645 0 0 3 0x14200 syncer update 55681 33770 0 0 3 0x14200 cleaner cleaner 10900 428752 0 0 3 0x14200 reaper reaper 41704 286383 0 0 3 0x14200 pgdaemon pagedaemon 23294 515655 0 0 3 0x14200 bored crynlk 19178 421708 0 0 3 0x14200 bored crypto 70228 204121 0 0 3 0x40014200 acpi0 acpi0 83755 433538 0 0 7 0x40014200 idle1 73628 143726 0 0 3 0x14200 bored softnet 14764 233620 0 0 3 0x14200 bored systqmp 12843 233309 0 0 3 0x14200 bored systq 42517 466319 0 0 3 0x40014200 bored softclock 54169 158921 0 0 3 0x40014200 idle0 1 335664 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9518 6436K 6801K 78643K 11456 0 pcb 13 8K 8K 78643K 127 0 rtable 95 11K 13K 78643K 577 0 ifaddr 84 17K 17K 78643K 211 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1695 0 iov 0 0K 16K 78643K 95 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1492 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 143 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 854 0 sigio 0 0K 0K 78643K 2 0 proc 62 63K 95K 78643K 499 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 55 0 in_multi 73 3K 3K 78643K 184 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 4 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 278 0 pfkey data 0 0K 0K 78643K 1 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 157 57K 58K 78643K 3821 0 UVM aobj 53 6K 6K 78643K 59 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 95 0 NDP 12 0K 0K 78643K 35 0 temp 133 3874K 3953K 78643K 10844 0 kqueue 3 4K 8K 78643K 22 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 51 0 49 1 0 1 1 0 8 0 rtentry 112 86 0 49 2 0 2 2 0 8 0 unpcb 120 441 0 431 1 0 1 1 0 8 0 syncache 272 11 0 11 3 3 0 1 0 8 0 tcpqe 32 222 0 222 2 2 0 1 0 8 0 tcpcb 592 238 0 232 7 5 2 3 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 296 836 0 829 4 2 2 2 0 8 1 nd6 48 29 0 23 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 2 1 1 0 8 1 pfstscr 40 4 0 4 2 2 0 1 0 8 0 pffrag 232 4 0 3 2 1 1 1 0 482 0 pffrnode 88 4 0 3 2 1 1 1 0 8 0 pffrent 40 55 0 54 2 1 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 76 0 76 2 1 1 1 0 8 1 pftag 88 5 0 5 2 2 0 1 0 8 0 pfstitem 24 21 0 10 1 0 1 1 0 8 0 pfstkey 112 29 0 18 1 0 1 1 0 8 0 pfstate 328 25 0 14 2 0 2 2 0 8 0 pfrule 1360 41 0 40 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 404 0 215 16 3 13 16 0 8 1 art_table 32 405 0 215 3 0 3 3 0 8 0 art_node 16 85 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 22 1 0 1 1 0 8 0 semupl 112 7 0 7 1 1 0 1 0 8 0 semapl 112 135 0 125 1 0 1 1 0 8 0 shmpl 112 56 0 6 3 1 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2481 0 1080 88 0 88 88 0 8 0 ffsino 272 2481 0 1080 94 0 94 94 0 8 0 nchpl 144 3968 0 2324 61 0 61 61 0 8 0 uvmvnodes 72 2718 0 0 50 0 50 50 0 8 0 vnodes 208 2718 0 0 144 0 144 144 0 8 0 namei 1024 13294 0 13294 2 1 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 22 2 1 1 1 0 8 1 scxspl 200 11723 0 11723 13 10 3 7 0 8 3 plimitpl 152 74 0 66 1 0 1 1 0 8 0 sigapl 424 1070 0 1039 4 0 4 4 0 8 0 futexpl 56 12680 0 12680 1 0 1 1 0 8 1 knotepl 112 87 0 69 1 0 1 1 0 8 0 kqueuepl 152 95 0 93 1 0 1 1 0 8 0 pipepl 304 180 0 170 3 1 2 2 0 8 1 fdescpl 496 1054 0 1039 3 0 3 3 0 8 0 filepl 152 6501 0 6410 5 0 5 5 0 8 1 lockfpl 104 159 0 158 1 0 1 1 0 8 0 lockfspl 48 61 0 60 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 513 0 503 1 0 1 1 0 8 0 zombiepl 144 1040 0 1038 2 1 1 1 0 8 0 processpl 1008 1070 0 1038 5 0 5 5 0 8 0 procpl 632 2973 0 2934 5 1 4 5 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 13 0 13 3 3 0 1 0 8 0 sockpl 400 1338 0 1319 7 3 4 4 0 8 2 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 0 0 1 0 1 1 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 272 0 0 33 0 33 33 0 8 0 mtagpl 96 35 0 0 1 0 1 1 0 8 0 mbufpl 256 339 0 0 18 0 18 18 0 8 0 bufpl 280 5181 0 129 361 0 361 361 0 8 0 anonpl 16 115846 0 97375 110 34 76 92 0 124 0 amapchunkpl 152 6428 0 6174 27 14 13 24 0 158 0 amappl16 192 5010 0 4103 71 24 47 58 0 8 1 amappl15 184 404 0 400 1 0 1 1 0 8 0 amappl14 176 424 0 422 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 22 0 18 1 0 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 16 0 12 1 0 1 1 0 8 0 amappl9 136 371 0 368 1 0 1 1 0 8 0 amappl8 128 373 0 331 2 0 2 2 0 8 0 amappl7 120 115 0 103 1 0 1 1 0 8 0 amappl6 112 38 0 31 1 0 1 1 0 8 0 amappl5 104 1006 0 990 1 0 1 1 0 8 0 amappl4 96 492 0 463 1 0 1 1 0 8 0 amappl3 88 632 0 624 1 0 1 1 0 8 0 amappl2 80 7950 0 7887 2 0 2 2 0 8 0 amappl1 72 41028 0 40608 22 12 10 17 0 8 0 amappl 80 3279 0 3210 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 6 1 0 1 1 0 8 0 uaddrrnd 24 1065 0 1043 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1065 0 1043 1 0 1 1 0 8 0 vmmpekpl 168 10759 0 10721 3 0 3 3 0 8 0 vmmpepl 168 142931 0 140921 130 30 100 113 0 357 3 vmsppl 368 1064 0 1043 3 0 3 3 0 8 0 pdppl 4096 2137 0 2093 9 2 7 7 0 8 1 pvpl 32 350231 0 328725 241 58 183 214 0 265 5 pmappl 232 1064 0 1043 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 289 0 15 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b31b00) 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+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800020ee22f0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2ff4e8,7,fffffd807f7bf960,ffff800020dd64f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806caa4ee8,ffff800020dd64f8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806caa4ee8,ffff800020dd64f8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806caa4ee8,ffff800020dd64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806caa4ee8,ffff800020dd64f8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dd64f8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dd64f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dd64f8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dd64f8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dd64f8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ee2770) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ee2770) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd68e0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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 acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffff800020d70ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5