uvm_fault(0xfffffd807effe170, 0x100b, 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(0xfffffd807effe170, 0x100b, 0, 1) -> e in_delmulti(fff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021f110a0, count: 0 ddb{0}> trace in_delmulti(fff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af7000) 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(ffff800021f11280) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807ea67348,7,fffffd807f7bf9c0,ffff800021aee298) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80682acc90,ffff800021aee298) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80682acc90,ffff800021aee298) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80682acc90,ffff800021aee298) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80682acc90,ffff800021aee298) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021aee298) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021aee298,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800021aee298,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800021aee298,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800021aee298) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800021f11700) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021f11700) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff6e10, count: -17 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800021f11050 rbx 0 rdx 0 rcx 0 rax 0xffff800021aee298 r8 0xffff800000af9900 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0x98ab4dd5499f100b r12 0 r13 0x3 r14 0xfff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f10ff0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=348070 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800021aeec78,0xffff800021aee520 process=0xffff800021ae0bd0 user=0xffff800021f0c000, vmspace=0xfffffd807effe170 estcpu=30, cpticks=7, pctcpu=0.7 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50849 43965 12309 0 2 0 syz-executor.1 50849 35841 12309 0 3 0x4000080 fsleep syz-executor.1 50849 187718 12309 0 3 0x4000080 fsleep syz-executor.1 50849 369332 12309 0 2 0x4000000 syz-executor.1 95846 124888 0 0 3 0x14200 bored sosplice 12309 72354 68357 0 3 0x82 nanosleep syz-executor.1 68357 53235 14663 0 3 0x82 thrsleep syz-fuzzer 68357 355225 14663 0 2 0x4000002 syz-fuzzer 68357 74609 14663 0 7 0x4000002 syz-fuzzer 68357 127594 14663 0 3 0x4000082 thrsleep syz-fuzzer 68357 42332 14663 0 3 0x4000082 thrsleep syz-fuzzer 68357 95134 14663 0 3 0x4000082 kqread syz-fuzzer 68357 206528 14663 0 3 0x4000082 thrsleep syz-fuzzer 68357 285044 14663 0 3 0x4000082 thrsleep syz-fuzzer 14663 88329 29664 0 3 0x10008a pause ksh 29664 175304 23078 0 3 0x92 select sshd 21965 162081 1 0 3 0x100083 ttyin getty 23078 46950 1 0 3 0x80 select sshd 89601 85425 77324 74 3 0x100092 bpf pflogd 77324 210838 1 0 3 0x80 netio pflogd 2859 437119 19299 73 3 0x100090 kqread syslogd 19299 120134 1 0 3 0x100082 netio syslogd 10499 303717 1 77 2 0x100090 dhclient 72048 434293 1 0 3 0x80 poll dhclient 14386 296942 0 0 3 0x14200 bored smr 72791 169393 0 0 2 0x14200 zerothread 37158 425373 0 0 3 0x14200 aiodoned aiodoned 19920 448143 0 0 3 0x14200 syncer update 47565 171165 0 0 3 0x14200 cleaner cleaner 73652 297559 0 0 3 0x14200 reaper reaper 6581 178418 0 0 3 0x14200 pgdaemon pagedaemon 13558 409400 0 0 3 0x14200 bored crynlk 68598 475819 0 0 3 0x14200 bored crypto 46425 248370 0 0 3 0x40014200 acpi0 acpi0 22358 328384 0 0 3 0x40014200 idle1 76585 76721 0 0 3 0x14200 bored softnet 40989 277073 0 0 2 0x14200 systqmp 96351 79342 0 0 3 0x14200 bored systq 21097 430861 0 0 3 0x40014200 bored softclock 72453 152542 0 0 3 0x40014200 idle0 1 363554 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 9502 6408K 6856K 78643K 10950 0 pcb 13 8K 8K 78643K 57 0 rtable 68 2K 4K 78643K 274 0 ifaddr 65 13K 14K 78643K 87 0 counters 43 33K 34K 78643K 45 0 ioctlops 0 0K 4K 78643K 1501 0 iov 0 0K 16K 78643K 20 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1370 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 61 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 250 0 proc 62 63K 95K 78643K 454 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 8 0 in_multi 35 2K 3K 78643K 69 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 224 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 170 43K 58K 78643K 1839 0 UVM aobj 18 4K 4K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 7 0 NDP 10 0K 0K 78643K 18 0 temp 100 3868K 3932K 78643K 8734 0 kqueue 3 4K 8K 78643K 11 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 23 0 21 1 0 1 1 0 8 0 rtentry 112 60 0 35 2 0 2 2 0 8 0 unpcb 120 177 0 167 1 0 1 1 0 8 0 syncache 272 5 0 5 2 2 0 1 0 8 0 tcpqe 32 1310 0 1310 2 2 0 1 0 8 0 tcpcb 592 195 0 179 2 0 2 2 0 8 0 inpcb 296 381 0 371 2 0 2 2 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 12 0 10 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 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 9 0 9 2 1 1 1 0 8 1 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 21 0 10 1 0 1 1 0 8 0 pfstkey 112 25 0 14 1 0 1 1 0 8 0 pfstate 328 23 0 12 2 0 2 2 0 8 0 pfrule 1360 27 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 264 0 148 14 0 14 14 0 8 4 art_table 32 265 0 148 2 0 2 2 0 8 0 art_node 16 59 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 9 1 0 1 1 0 8 0 semapl 112 57 0 47 1 0 1 1 0 8 0 shmpl 112 19 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1766 0 363 88 0 88 88 0 8 0 ffsino 272 1766 0 363 95 1 94 94 0 8 0 nchpl 144 2335 0 746 60 0 60 60 0 8 0 uvmvnodes 72 1902 0 0 35 0 35 35 0 8 0 vnodes 208 1902 0 0 101 0 101 101 0 8 0 namei 1024 6849 0 6849 3 2 1 1 0 8 1 percpumem 16 33 0 1 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 3 2 1 1 1 0 8 1 scxspl 200 6775 0 6775 8 7 1 7 0 8 1 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 466 0 434 4 0 4 4 0 8 0 futexpl 56 3630 0 3628 2 1 1 1 0 8 0 knotepl 112 76 0 62 1 0 1 1 0 8 0 kqueuepl 152 42 0 40 1 0 1 1 0 8 0 pipepl 304 96 0 88 4 3 1 2 0 8 0 fdescpl 496 450 0 434 3 0 3 3 0 8 0 filepl 152 3090 0 2999 6 1 5 5 0 8 1 lockfpl 104 72 0 71 1 0 1 1 0 8 0 lockfspl 48 23 0 22 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 743 0 734 1 0 1 1 0 8 0 zombiepl 144 435 0 434 2 1 1 1 0 8 0 processpl 1008 466 0 434 7 2 5 5 0 8 0 procpl 632 1010 0 968 8 3 5 5 0 8 1 sockpl 400 584 0 562 8 4 4 4 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 7 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 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 239 0 0 29 0 29 29 0 8 0 mtagpl 96 33 0 0 1 0 1 1 0 8 0 mbufpl 256 283 0 0 15 0 15 15 0 8 0 bufpl 280 3826 0 127 265 0 265 265 0 8 0 anonpl 16 63277 0 44814 101 7 94 99 0 124 18 amapchunkpl 152 3193 0 2865 29 15 14 26 0 158 0 amappl16 192 2108 0 1269 55 10 45 54 0 8 2 amappl15 184 9 0 8 1 0 1 1 0 8 0 amappl14 176 122 0 118 1 0 1 1 0 8 0 amappl13 168 30 0 25 1 0 1 1 0 8 0 amappl12 160 23 0 19 1 0 1 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 21 0 16 1 0 1 1 0 8 0 amappl9 136 478 0 475 1 0 1 1 0 8 0 amappl8 128 442 0 406 2 0 2 2 0 8 0 amappl7 120 116 0 103 1 0 1 1 0 8 0 amappl6 112 28 0 23 1 0 1 1 0 8 0 amappl5 104 345 0 328 1 0 1 1 0 8 0 amappl4 96 499 0 467 1 0 1 1 0 8 0 amappl3 88 239 0 230 1 0 1 1 0 8 0 amappl2 80 2656 0 2580 2 0 2 2 0 8 0 amappl1 72 22125 0 21630 23 13 10 18 0 8 0 amappl 80 1316 0 1224 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 21 0 4 1 0 1 1 0 8 0 uaddrrnd 24 452 0 434 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 452 0 434 1 0 1 1 0 8 0 vmmpekpl 168 7174 0 7135 2 0 2 2 0 8 0 vmmpepl 168 64157 0 62023 124 23 101 109 0 357 5 vmsppl 368 451 0 434 2 0 2 2 0 8 0 pdppl 4096 911 0 870 7 1 6 6 0 8 0 pvpl 32 200171 0 178721 234 12 222 229 0 265 47 pmappl 232 451 0 434 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 275 0 13 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(fff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af7000) 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(ffff800021f11280) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807ea67348,7,fffffd807f7bf9c0,ffff800021aee298) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80682acc90,ffff800021aee298) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80682acc90,ffff800021aee298) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80682acc90,ffff800021aee298) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80682acc90,ffff800021aee298) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021aee298) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021aee298,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800021aee298,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800021aee298,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800021aee298) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800021f11700) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021f11700) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff6e10, 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 end of kernel end trace frame: 0xc00004df20, count: -3