ukernel: 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(0xfffffd806e8fc8a8, 0xef, 0, 1) -> e in_delmulti(e3) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff8000230d7840, count: 0 ddb{1}> trace in_delmulti(e3) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b38b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af0800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af0800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000af0800) 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(ffff8000230d7a20) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ea72348,7,fffffd807f7bf720,ffff800020e37288) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067f2fed8,ffff800020e37288) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067f2fed8,ffff800020e37288) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067f2fed8,ffff800020e37288) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067f2fed8,ffff800020e37288) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e37288) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e37288,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e37288,ffff8000230d7cb0,ffff8000230d7d00) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000230d7d80) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230d7d80) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5bf0, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff8000230d77f0 rbx 0 rdx 0 rcx 0 rax 0xffff800020e37288 r8 0xffff800000b38b00 r9 0xffffffff81968e83 rt_ifa_purge+0x153 r10 0x5 r11 0x80f6e55de3daa602 r12 0 r13 0x3 r14 0xe3 r15 0x1 rip 0xffffffff819aa3cd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230d7790 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=327069 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e38608,0xffffffff828f12a8 process=0xffff800020eb4408 user=0xffff8000230d2000, vmspace=0xfffffd806e8fc8a8 estcpu=36, cpticks=5, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91956 65701 72617 0 3 0x82 piperd syz-executor.0 74761 259612 0 0 3 0x14200 bored sosplice 72617 215842 91364 0 3 0x82 thrsleep syz-fuzzer 72617 297096 91364 0 2 0x4000002 syz-fuzzer 72617 402649 91364 0 2 0x4000002 syz-fuzzer 72617 239670 91364 0 3 0x4000082 thrsleep syz-fuzzer 72617 262240 91364 0 3 0x4000082 thrsleep syz-fuzzer 72617 246560 91364 0 3 0x4000082 thrsleep syz-fuzzer 72617 374733 91364 0 3 0x4000082 kqread syz-fuzzer 72617 362987 91364 0 7 0x4000002 syz-fuzzer 91364 214605 37408 0 3 0x10008a pause ksh 37408 330657 19299 0 3 0x92 select sshd 73758 434751 1 0 3 0x100083 ttyin getty 19299 176780 1 0 3 0x80 select sshd 99413 155995 52296 74 3 0x100092 bpf pflogd 52296 222335 1 0 3 0x80 netio pflogd 33883 412398 79001 73 3 0x100090 kqread syslogd 79001 4243 1 0 3 0x100082 netio syslogd 45209 374069 1 77 2 0x100090 dhclient 64777 216952 1 0 3 0x80 poll dhclient 80071 523956 0 0 3 0x14200 bored smr 77283 132375 0 0 3 0x14200 pgzero zerothread 24578 280317 0 0 3 0x14200 aiodoned aiodoned 37356 487401 0 0 3 0x14200 syncer update 69695 266383 0 0 3 0x14200 cleaner cleaner 17860 496586 0 0 3 0x14200 reaper reaper 6340 332574 0 0 3 0x14200 pgdaemon pagedaemon 45220 504944 0 0 3 0x14200 bored crynlk 29636 128273 0 0 3 0x14200 bored crypto 22498 519653 0 0 3 0x40014200 acpi0 acpi0 47317 258523 0 0 3 0x40014200 idle1 53296 312898 0 0 3 0x14200 bored softnet 92035 104554 0 0 2 0x14200 systqmp 7813 287060 0 0 3 0x14200 bored systq 4409 254491 0 0 3 0x40014200 bored softclock 95124 87472 0 0 3 0x40014200 idle0 1 85054 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 9516 6411K 7181K 78643K 12543 0 pcb 13 8K 8K 78643K 86 0 rtable 116 15K 16K 78643K 513 0 ifaddr 80 16K 17K 78643K 172 0 counters 43 33K 34K 78643K 61 0 ioctlops 0 0K 4K 78643K 1577 0 iov 0 0K 16K 78643K 57 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1742 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 14 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 118 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 557 0 sigio 0 0K 0K 78643K 12 0 proc 62 63K 95K 78643K 496 0 subproc 23 1K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 41 0 in_multi 61 3K 3K 78643K 146 0 ether_multi 1 0K 0K 78643K 9 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 254 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 176 52K 52K 78643K 2749 0 UVM aobj 33 2K 2K 78643K 43 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 12 0K 0K 78643K 39 0 temp 121 3861K 3933K 78643K 7028 0 kqueue 3 4K 8K 78643K 19 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 10 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 45 0 43 1 0 1 1 0 8 0 rtentry 112 91 0 51 2 0 2 2 0 8 0 unpcb 120 217 0 207 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 1099 0 1099 3 3 0 1 0 8 0 tcpcb 544 163 0 156 2 0 2 2 0 8 1 inpcb 296 507 0 499 2 0 2 2 0 8 1 nd6 48 22 0 17 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 90 0 90 1 1 0 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 58 0 52 1 0 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 22 0 9 1 0 1 1 0 8 0 pfstkey 112 24 0 11 1 0 1 1 0 8 0 pfstate 328 22 0 9 2 0 2 2 0 8 0 pfsrctr 152 42 0 37 1 0 1 1 0 8 0 pfrule 1360 45 0 32 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 374 0 200 13 2 11 13 0 8 0 art_table 32 375 0 200 2 0 2 2 0 8 0 art_node 16 90 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 22 1 0 1 1 0 8 0 semapl 112 114 0 104 1 0 1 1 0 8 0 shmpl 112 40 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2072 0 671 89 0 89 89 0 8 0 ffsino 272 2072 0 671 95 1 94 94 0 8 0 nchpl 144 3133 0 1534 60 0 60 60 0 8 0 uvmvnodes 72 2584 0 0 47 0 47 47 0 8 0 vnodes 208 2584 0 0 136 0 136 136 0 8 0 namei 1024 9562 0 9562 3 2 1 1 0 8 1 percpumem 16 41 0 9 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 18 0 14 1 0 1 1 0 8 0 scxspl 192 8695 0 8695 10 9 1 7 0 8 1 plimitpl 152 37 0 29 1 0 1 1 0 8 0 sigapl 424 770 0 739 4 0 4 4 0 8 0 futexpl 56 8687 0 8687 2 1 1 1 0 8 1 knotepl 112 90 0 76 1 0 1 1 0 8 0 kqueuepl 144 94 0 91 1 0 1 1 0 8 0 pipepl 304 137 0 129 3 1 2 2 0 8 1 fdescpl 496 754 0 739 3 0 3 3 0 8 0 filepl 152 4563 0 4476 7 2 5 6 0 8 0 lockfpl 104 149 0 148 1 0 1 1 0 8 0 lockfspl 48 41 0 40 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 609 0 600 1 0 1 1 0 8 0 zombiepl 144 740 0 739 3 2 1 1 0 8 0 processpl 992 770 0 739 6 1 5 5 0 8 0 procpl 624 1864 0 1826 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 774 0 754 7 3 4 4 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 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 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 210 0 0 26 0 26 26 0 8 0 mtagpl 96 251 0 0 7 0 7 7 0 8 0 mbufpl 256 653 0 0 40 0 40 40 0 8 0 bufpl 280 4968 0 127 346 0 346 346 0 8 0 anonpl 16 96688 0 77948 89 9 80 88 0 124 4 amapchunkpl 152 4633 0 4274 21 3 18 19 0 158 4 amappl16 192 3442 0 2595 54 11 43 54 0 8 0 amappl15 184 150 0 148 1 0 1 1 0 8 0 amappl14 176 46 0 44 1 0 1 1 0 8 0 amappl13 168 354 0 349 1 0 1 1 0 8 0 amappl12 160 28 0 25 1 0 1 1 0 8 0 amappl11 152 100 0 85 1 0 1 1 0 8 0 amappl10 144 171 0 168 1 0 1 1 0 8 0 amappl9 136 361 0 360 1 0 1 1 0 8 0 amappl8 128 362 0 326 2 0 2 2 0 8 0 amappl7 120 120 0 109 1 0 1 1 0 8 0 amappl6 112 32 0 25 1 0 1 1 0 8 0 amappl5 104 618 0 599 1 0 1 1 0 8 0 amappl4 96 867 0 838 1 0 1 1 0 8 0 amappl3 88 183 0 175 1 0 1 1 0 8 0 amappl2 80 5211 0 5142 2 0 2 2 0 8 0 amappl1 72 31241 0 30798 23 13 10 18 0 8 0 amappl 80 2186 0 2093 3 1 2 3 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 42 0 10 1 0 1 1 0 8 0 uaddrrnd 24 762 0 743 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 762 0 743 1 0 1 1 0 8 0 vmmpekpl 168 9351 0 9315 2 0 2 2 0 8 0 vmmpepl 168 103637 0 101644 158 56 102 123 0 357 9 vmsppl 368 761 0 743 2 0 2 2 0 8 0 pdppl 4096 1531 0 1490 7 1 6 6 0 8 0 pvpl 32 283520 0 261700 209 17 192 206 0 265 14 pmappl 232 761 0 743 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 301 0 12 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82713ff0) 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(ffffffff828ec9f0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ec9f0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 intr_handler(ffff800020ebbd80,ffff80000065bd80) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x19f end of kernel end trace frame: 0xc000225e90, count: -6 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(e3) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b38b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af0800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af0800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000af0800) 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(ffff8000230d7a20) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ea72348,7,fffffd807f7bf720,ffff800020e37288) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067f2fed8,ffff800020e37288) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067f2fed8,ffff800020e37288) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067f2fed8,ffff800020e37288) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067f2fed8,ffff800020e37288) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e37288) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e37288,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e37288,ffff8000230d7cb0,ffff8000230d7d00) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000230d7d80) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230d7d80) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5bf0, count: -16