login: uvm_fault(0xfffffd807efffa10, 0xe31, 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(0xfffffd807efffa10, 0xe31, 0, 1) -> e in_delmulti(e25) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800020ed2ab0, count: 0 ddb{1}> trace in_delmulti(e25) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa0800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac4000) 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(ffff800020ed2c90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807eb66418,7,fffffd807f7bf840,ffff800020ddcc38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80673b3b68,ffff800020ddcc38) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80673b3b68,ffff800020ddcc38) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80673b3b68,ffff800020ddcc38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80673b3b68,ffff800020ddcc38) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddcc38) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddcc38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddcc38,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddcc38,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddcc38) at userret+0x199 sys/kern/kern_sig.c:1872 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffbda60, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800020ed2a60 rbx 0 rdx 0xffff800020ddcc38 rcx 0 rax 0 r8 0xffffffff81636133 rt_ifa_purge+0x153 r9 0x5 r10 0x3 r11 0x954a9da6ce791447 r12 0 r13 0x3 r14 0xe25 r15 0x1 rip 0xffffffff811e3b6d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ed2a00 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=109568 stat=onproc flags process=a proc=2000 pri=32, usrpri=70, nice=20 forw=0xffffffffffffffff, list=0xffff800020dddd48,0xffff800020ddd608 process=0xffff8000fffffb38 user=0xffff800020ece000, vmspace=0xfffffd807efffa10 estcpu=36, cpticks=2, pctcpu=0.13 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42275 5504 26459 0 3 0x80 nanosleep syz-executor.1 42275 57692 26459 0 3 0x4000080 netcon syz-executor.1 42275 475002 26459 0 3 0x4000080 fsleep syz-executor.1 88398 494826 0 0 3 0x14200 acct acct 44303 340786 1 0 3 0x100083 ttyin getty 26459 2357 30445 0 7 0x2 syz-executor.1 30445 268590 93903 0 3 0x82 thrsleep syz-fuzzer 30445 463066 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 350075 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 198444 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 44301 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 213812 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 524086 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 247394 93903 0 3 0x4000082 thrsleep syz-fuzzer 30445 516189 93903 0 3 0x4000082 kqread syz-fuzzer 30445 153178 93903 0 3 0x4000082 thrsleep syz-fuzzer 93903 243094 13116 0 3 0x10008a pause ksh 13116 59894 30758 0 3 0x92 select sshd 30758 332790 1 0 3 0x80 select sshd 56568 431382 70157 74 3 0x100092 bpf pflogd 70157 368360 1 0 3 0x80 netio pflogd 96393 432698 8784 73 3 0x100090 kqread syslogd 8784 309363 1 0 3 0x100082 netio syslogd 35773 115964 1 77 2 0x100090 dhclient 92683 237798 1 0 3 0x80 poll dhclient 96729 155800 0 0 3 0x14200 bored smr 65486 261684 0 0 3 0x14200 pgzero zerothread 36700 439041 0 0 3 0x14200 aiodoned aiodoned 8097 20516 0 0 3 0x14200 syncer update 56693 459470 0 0 3 0x14200 cleaner cleaner 15120 299594 0 0 3 0x14200 reaper reaper 86853 247520 0 0 3 0x14200 pgdaemon pagedaemon 96687 475203 0 0 3 0x14200 bored crynlk 623 314721 0 0 3 0x14200 bored crypto 18168 195257 0 0 3 0x40014200 acpi0 acpi0 44406 214089 0 0 3 0x40014200 idle1 24276 47157 0 0 3 0x14200 bored softnet 93175 172769 0 0 2 0x14200 systqmp 9516 438958 0 0 3 0x14200 bored systq 60118 404761 0 0 3 0x40014200 bored softclock 33009 208653 0 0 3 0x40014200 idle0 1 94499 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 9478 6400K 6655K 78643K 10709 0 pcb 13 8K 8K 78643K 41 0 rtable 94 3K 4K 78643K 239 0 ifaddr 48 11K 12K 78643K 67 0 counters 43 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 1471 0 iov 0 0K 12K 78643K 8 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1267 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 34 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 142 0 proc 62 63K 95K 78643K 452 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 15 0 in_multi 32 2K 2K 78643K 54 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 2 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 218 0 pfkey data 0 0K 0K 78643K 2 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 122 23K 23K 78643K 1395 0 UVM aobj 12 2K 2K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 21 0 NDP 8 0K 0K 78643K 16 0 temp 85 3855K 3921K 78643K 3857 0 kqueue 3 4K 8K 78643K 11 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 26 0 24 1 0 1 1 0 8 0 rtentry 112 54 0 17 2 0 2 2 0 8 0 unpcb 120 115 0 105 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpqe 32 321 0 321 2 1 1 1 0 8 1 tcpcb 544 58 0 44 2 0 2 2 0 8 0 inpcb 296 159 0 148 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 ppxss 1136 2 0 2 1 0 1 1 0 8 1 pffrag 232 1 0 1 1 0 1 1 0 482 1 pffrnode 88 1 0 1 1 0 1 1 0 8 1 pffrent 40 2 0 2 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 20 0 3 1 0 1 1 0 8 0 pfstkey 112 20 0 3 1 0 1 1 0 8 0 pfstate 328 20 0 3 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 236 0 64 12 0 12 12 0 8 1 art_table 32 237 0 64 2 0 2 2 0 8 0 art_node 16 53 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 32 0 22 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1576 0 165 89 0 89 89 0 8 0 ffsino 272 1576 0 165 96 1 95 95 0 8 0 nchpl 144 2074 0 462 60 0 60 60 0 8 0 uvmvnodes 72 1646 0 0 30 0 30 30 0 8 0 vnodes 208 1646 0 0 87 0 87 87 0 8 0 namei 1024 5506 0 5506 2 1 1 1 0 8 1 percpumem 16 35 0 3 1 0 1 1 0 8 0 scxspl 192 5786 0 5786 9 6 3 7 0 8 3 plimitpl 152 24 0 16 1 0 1 1 0 8 0 sigapl 424 359 0 327 4 0 4 4 0 8 0 futexpl 56 1876 0 1875 1 0 1 1 0 8 0 knotepl 112 73 0 56 1 0 1 1 0 8 0 kqueuepl 144 18 0 16 1 0 1 1 0 8 0 pipepl 304 98 0 89 3 1 2 2 0 8 1 fdescpl 496 343 0 327 3 0 3 3 0 8 0 filepl 152 2088 0 1996 7 1 6 6 0 8 2 lockfpl 104 26 0 25 1 0 1 1 0 8 0 lockfspl 48 10 0 9 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 151 0 142 1 0 1 1 0 8 0 zombiepl 144 328 0 327 2 1 1 1 0 8 0 processpl 992 359 0 327 6 1 5 5 0 8 0 procpl 624 622 0 579 4 0 4 4 0 8 0 sockpl 400 306 0 283 5 1 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 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 193 0 0 24 0 24 24 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 227 0 0 13 0 13 13 0 8 0 bufpl 280 3554 0 132 245 0 245 245 0 8 0 anonpl 16 47708 0 31224 69 1 68 68 0 124 0 amapchunkpl 152 1618 0 1480 7 0 7 7 0 158 0 amappl16 192 1476 0 566 46 0 46 46 0 8 0 amappl15 184 55 0 53 1 0 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 19 0 17 2 1 1 1 0 8 0 amappl11 152 110 0 93 1 0 1 1 0 8 0 amappl10 144 18 0 13 1 0 1 1 0 8 0 amappl9 136 388 0 386 1 0 1 1 0 8 0 amappl8 128 356 0 321 2 0 2 2 0 8 0 amappl7 120 118 0 106 1 0 1 1 0 8 0 amappl6 112 79 0 73 1 0 1 1 0 8 0 amappl5 104 239 0 222 1 0 1 1 0 8 0 amappl4 96 499 0 469 1 0 1 1 0 8 0 amappl3 88 101 0 95 1 0 1 1 0 8 0 amappl2 80 1836 0 1767 2 0 2 2 0 8 0 amappl1 72 18820 0 18369 23 13 10 18 0 8 0 amappl 80 876 0 832 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 343 0 327 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 343 0 327 1 0 1 1 0 8 0 vmmpekpl 168 6618 0 6583 2 0 2 2 0 8 0 vmmpepl 168 50272 0 48190 116 12 104 111 0 357 9 vmsppl 368 342 0 327 2 0 2 2 0 8 0 pdppl 4096 693 0 654 7 1 6 6 0 8 0 pvpl 32 165526 0 145829 166 1 165 165 0 265 3 pmappl 232 342 0 327 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 268 0 7 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 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __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 syscall(ffff8000226f1980) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000226f1980) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7c60, count: -9 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(e25) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa0800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac4000) 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(ffff800020ed2c90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807eb66418,7,fffffd807f7bf840,ffff800020ddcc38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80673b3b68,ffff800020ddcc38) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80673b3b68,ffff800020ddcc38) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80673b3b68,ffff800020ddcc38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80673b3b68,ffff800020ddcc38) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddcc38) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddcc38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddcc38,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddcc38,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddcc38) at userret+0x199 sys/kern/kern_sig.c:1872 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffbda60, count: -16