login: uvm_fault(0xfffffd807effe000, 0x3fff7edf00b, 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(0xfffffd807effe000, 0x3fff7edf00b, 0, 1) -> e in_delmulti(3fff7edefff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff8000241101a0, count: 0 ddb{1}> trace in_delmulti(3fff7edefff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0a800) 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(ffff800024110380) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2281a8,7,fffffd807f7bf960,ffff800020e8f8c8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80680acdc0,ffff800020e8f8c8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80680acdc0,ffff800020e8f8c8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80680acdc0,ffff800020e8f8c8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80680acdc0,ffff800020e8f8c8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e8f8c8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e8f8c8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e8f8c8,ffff800024110610,ffff800024110660) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000241106e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000241106e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcaf00, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800024110150 rbx 0 rdx 0 rcx 0 rax 0xffff800020e8f8c8 r8 0xffff800000b0a800 r9 0xffffffff8158de33 rt_ifa_purge+0x153 r10 0x5 r11 0x22d6d1f1253235f0 r12 0 r13 0x3 r14 0x3fff7edefff r15 0x1 rip 0xffffffff8120951d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000241100f0 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=197915 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff800020e8f160,0xffffffff828c6de0 process=0xffff800020ebd7a8 user=0xffff80002410b000, vmspace=0xfffffd807effe000 estcpu=25, cpticks=1, pctcpu=0.14 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94865 105991 0 0 3 0x14200 bored sosplice 26889 341411 65106 0 3 0x82 piperd syz-executor.1 65106 65948 35784 0 3 0x82 thrsleep syz-fuzzer 65106 364555 35784 0 7 0x4000002 syz-fuzzer 65106 344457 35784 0 3 0x4000082 thrsleep syz-fuzzer 65106 141082 35784 0 2 0x4000002 syz-fuzzer 65106 427856 35784 0 3 0x4000082 thrsleep syz-fuzzer 65106 383675 35784 0 2 0x4000002 syz-fuzzer 65106 406730 35784 0 3 0x4000082 thrsleep syz-fuzzer 65106 425448 35784 0 3 0x4000082 thrsleep syz-fuzzer 35784 104874 70257 0 3 0x10008a pause ksh 70257 124884 25414 0 3 0x92 select sshd 13260 92688 1 0 3 0x100083 ttyin getty 25414 188652 1 0 3 0x80 select sshd 13790 243699 19170 74 3 0x100092 bpf pflogd 19170 156366 1 0 3 0x80 netio pflogd 1700 215716 44796 73 3 0x100090 kqread syslogd 44796 256609 1 0 3 0x100082 netio syslogd 49077 423531 1 77 3 0x100090 poll dhclient 71749 390652 1 0 3 0x80 poll dhclient 8147 255033 0 0 3 0x14200 bored smr 18140 471673 0 0 3 0x14200 pgzero zerothread 4818 209527 0 0 3 0x14200 aiodoned aiodoned 62464 270044 0 0 3 0x14200 syncer update 90862 420947 0 0 3 0x14200 cleaner cleaner 66743 303687 0 0 3 0x14200 reaper reaper 2963 39261 0 0 3 0x14200 pgdaemon pagedaemon 52666 270528 0 0 3 0x14200 bored crynlk 30977 93165 0 0 3 0x14200 bored crypto 23881 59446 0 0 3 0x40014200 acpi0 acpi0 68568 63804 0 0 3 0x40014200 idle1 22308 352696 0 0 3 0x14200 bored softnet 22843 411369 0 0 3 0x14200 bored systqmp 9468 304017 0 0 3 0x14200 bored systq 44959 177030 0 0 3 0x40014200 bored softclock 12894 188401 0 0 3 0x40014200 idle0 1 325732 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 9483 6402K 6787K 78643K 10721 0 pcb 13 8K 8K 78643K 23 0 rtable 105 3K 3K 78643K 232 0 ifaddr 55 12K 12K 78643K 63 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1480 0 iov 0 0K 12K 78643K 6 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1270 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 123 0 proc 61 63K 83K 78643K 450 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 10 0 in_multi 40 2K 2K 78643K 59 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 207 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 155 26K 26K 78643K 1346 0 UVM aobj 5 2K 2K 78643K 9 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 8 0K 0K 78643K 16 0 temp 91 3863K 3927K 78643K 3401 0 kqueue 3 4K 6K 78643K 4 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 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 21 0 19 1 0 1 1 0 8 0 rtentry 112 52 0 8 2 0 2 2 0 8 0 unpcb 120 41 0 31 1 0 1 1 0 8 0 syncache 272 6 0 6 2 1 1 1 0 8 1 tcpqe 32 162 0 162 2 1 1 1 0 8 1 tcpcb 592 46 0 40 2 0 2 2 0 8 1 inpcb 296 109 0 102 2 0 2 2 0 8 1 nd6 48 10 0 4 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 21 0 0 1 0 1 1 0 8 0 pfstkey 112 21 0 0 1 0 1 1 0 8 0 pfstate 328 21 0 0 2 0 2 2 0 8 0 pfrule 1360 22 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 192 0 2 12 0 12 12 0 8 0 art_table 32 193 0 2 2 0 2 2 0 8 0 art_node 16 51 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1538 0 139 88 0 88 88 0 8 0 ffsino 272 1538 0 139 94 0 94 94 0 8 0 nchpl 144 1945 0 359 60 0 60 60 0 8 0 uvmvnodes 72 1620 0 0 30 0 30 30 0 8 0 vnodes 208 1620 0 0 86 0 86 86 0 8 0 namei 1024 5124 0 5124 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 200 5633 0 5633 8 1 7 7 0 8 7 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 339 0 308 4 0 4 4 0 8 0 futexpl 56 1364 0 1364 1 0 1 1 0 8 1 knotepl 112 63 0 49 1 0 1 1 0 8 0 kqueuepl 152 24 0 22 1 0 1 1 0 8 0 pipepl 304 96 0 88 2 0 2 2 0 8 1 fdescpl 496 323 0 308 3 0 3 3 0 8 0 filepl 152 1720 0 1633 6 0 6 6 0 8 2 lockfpl 104 32 0 31 1 0 1 1 0 8 0 lockfspl 48 11 0 10 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 114 0 105 1 0 1 1 0 8 0 zombiepl 144 309 0 308 1 0 1 1 0 8 0 processpl 1008 339 0 308 5 0 5 5 0 8 0 procpl 632 541 0 503 4 0 4 4 0 8 0 sosppl 144 3 0 3 1 0 1 1 0 8 1 sockpl 400 177 0 158 3 0 3 3 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 191 0 0 23 0 23 23 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 210 0 0 13 0 13 13 0 8 0 bufpl 280 3536 0 127 244 0 244 244 0 8 0 anonpl 16 46874 0 29048 73 1 72 72 0 124 0 amapchunkpl 152 1672 0 1351 14 1 13 14 0 158 0 amappl16 192 1275 0 478 40 0 40 40 0 8 0 amappl15 184 54 0 52 1 0 1 1 0 8 0 amappl14 176 4 0 2 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 30 0 23 1 0 1 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 68 0 64 1 0 1 1 0 8 0 amappl9 136 401 0 399 1 0 1 1 0 8 0 amappl8 128 338 0 306 2 0 2 2 0 8 0 amappl7 120 171 0 157 1 0 1 1 0 8 0 amappl6 112 35 0 28 1 0 1 1 0 8 0 amappl5 104 223 0 205 1 0 1 1 0 8 0 amappl4 96 486 0 459 1 0 1 1 0 8 0 amappl3 88 119 0 110 1 0 1 1 0 8 0 amappl2 80 1633 0 1567 2 0 2 2 0 8 0 amappl1 72 18085 0 17627 24 14 10 18 0 8 0 amappl 80 827 0 749 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 8 0 4 1 0 1 1 0 8 0 uaddrrnd 24 323 0 308 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 323 0 308 1 0 1 1 0 8 0 vmmpekpl 168 6634 0 6601 2 0 2 2 0 8 0 vmmpepl 168 47524 0 45576 118 7 111 113 0 357 22 vmsppl 368 322 0 308 2 0 2 2 0 8 0 pdppl 4096 653 0 616 6 0 6 6 0 8 0 pvpl 32 160701 0 139746 170 0 170 170 0 265 0 pmappl 232 322 0 308 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 256 0 3 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(ffffffff82738ff0) 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(ffffffff8293cd60) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8293cd60) at __mp_lock+0x127 sys/kern/kern_lock.c:147 syscall(ffff800020e78510) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800020e78510) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004ded8, count: -6 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(3fff7edefff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0a800) 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(ffff800024110380) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2281a8,7,fffffd807f7bf960,ffff800020e8f8c8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80680acdc0,ffff800020e8f8c8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80680acdc0,ffff800020e8f8c8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80680acdc0,ffff800020e8f8c8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80680acdc0,ffff800020e8f8c8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e8f8c8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e8f8c8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e8f8c8,ffff800024110610,ffff800024110660) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000241106e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000241106e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcaf00, count: -16