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(0xfffffd806e9085c8, 0xafb9, 0, 1) -> e in_delmulti(afad) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800023f00430, count: 0 ddb{1}> trace in_delmulti(afad) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000afc900) 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:1032 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(ffff800023f00610) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806f0df418,7,fffffd807f7bfa80,ffff800020eb2c70) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067e687d0,ffff800020eb2c70) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067e687d0,ffff800020eb2c70) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067e687d0,ffff800020eb2c70) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067e687d0,ffff800020eb2c70) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb2c70) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb2c70,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb2c70,ffff800023f008a0,ffff800023f008f0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f00970) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f00970) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0720, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023f003e0 rbx 0 rdx 0 rcx 0 rax 0xffff800020eb2c70 r8 0xffff800000afc900 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0x836a821afa08a925 r12 0 r13 0x3 r14 0xafad __ALIGN_SIZE+0x9fad r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f00380 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=166765 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020e25b48,0xffffffff828cde18 process=0xffff800023f927e0 user=0xffff800023efb000, vmspace=0xfffffd806e9085c8 estcpu=32, cpticks=7, pctcpu=0.12 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53294 387962 0 0 3 0x14280 nfsidl nfsio 58050 423465 0 0 3 0x14280 nfsidl nfsio 46762 432920 0 0 3 0x14280 nfsidl nfsio 73054 82114 0 0 3 0x14280 nfsidl nfsio 31388 480017 0 0 3 0x14280 nfsidl nfsio 74372 270352 0 0 3 0x14280 nfsidl nfsio 91868 4611 0 0 3 0x14280 nfsidl nfsio 84080 462072 0 0 3 0x14280 nfsidl nfsio 8638 203004 0 0 3 0x14280 nfsidl nfsio 2845 334214 0 0 3 0x14280 nfsidl nfsio 65083 156609 0 0 3 0x14280 nfsidl nfsio 49138 143840 0 0 3 0x14280 nfsidl nfsio 17342 107784 0 0 3 0x14280 nfsidl nfsio 57687 405977 0 0 3 0x14280 nfsidl nfsio 5244 98580 0 0 3 0x14280 nfsidl nfsio 12584 464112 0 0 3 0x14280 nfsidl nfsio 66273 261142 0 0 3 0x14280 nfsidl nfsio 41023 428201 0 0 3 0x14280 nfsidl nfsio 93624 357676 0 0 3 0x14280 nfsidl nfsio 85915 507768 0 0 3 0x14280 nfsidl nfsio 57527 148277 0 0 3 0x14200 bored sosplice 64254 130810 56437 0 3 0x82 piperd syz-executor.1 56437 138140 1889 0 3 0x82 thrsleep syz-fuzzer 56437 425098 1889 0 3 0x4000082 nanosleep syz-fuzzer 56437 157639 1889 0 2 0x4000002 syz-fuzzer 56437 448203 1889 0 2 0x4000002 syz-fuzzer 56437 312312 1889 0 3 0x4000082 thrsleep syz-fuzzer 56437 342643 1889 0 3 0x4000082 thrsleep syz-fuzzer 56437 309690 1889 0 3 0x4000082 kqread syz-fuzzer 56437 330706 1889 0 3 0x4000082 thrsleep syz-fuzzer 1889 408942 65326 0 3 0x10008a pause ksh 65326 228620 77157 0 3 0x92 select sshd 51254 215299 1 0 3 0x100083 ttyin getty 77157 25584 1 0 3 0x80 select sshd 80057 134329 9860 74 3 0x100092 bpf pflogd 9860 453384 1 0 3 0x80 netio pflogd 75964 226972 47438 73 3 0x100090 kqread syslogd 47438 205604 1 0 3 0x100082 netio syslogd 54370 120095 1 77 7 0x100090 dhclient 52512 359698 1 0 3 0x80 poll dhclient 84763 422503 0 0 3 0x14200 bored smr 45477 63324 0 0 3 0x14200 pgzero zerothread 62301 326446 0 0 3 0x14200 aiodoned aiodoned 58433 26420 0 0 3 0x14200 syncer update 43963 157409 0 0 3 0x14200 cleaner cleaner 31806 120608 0 0 3 0x14200 reaper reaper 38485 224234 0 0 3 0x14200 pgdaemon pagedaemon 97599 448992 0 0 3 0x14200 bored crynlk 43259 520257 0 0 3 0x14200 bored crypto 32414 110665 0 0 3 0x40014200 acpi0 acpi0 16321 302933 0 0 3 0x40014200 idle1 29242 49741 0 0 3 0x14200 bored softnet 21850 426861 0 0 2 0x14200 systqmp 70243 86496 0 0 3 0x14200 bored systq 87788 314714 0 0 3 0x40014200 bored softclock 16186 95781 0 0 3 0x40014200 idle0 1 217440 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 9531 6437K 6813K 78643K 11884 0 pcb 13 8K 8K 78643K 366 0 rtable 104 11K 12K 78643K 568 0 ifaddr 116 24K 24K 78643K 243 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 69 0 ioctlops 0 0K 4K 78643K 1643 0 iov 0 0K 24K 78643K 2121 0 mount 1 1K 1K 78643K 1 0 vnodes 1233 78K 78K 78643K 1631 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 24 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 247 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1455 0 sigio 0 0K 0K 78643K 13 0 proc 62 63K 83K 78643K 516 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 82 0 in_multi 107 4K 4K 78643K 252 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 5 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 285 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 213 96K 111K 78643K 5540 0 UVM aobj 50 2K 2K 78643K 58 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 116 0 NDP 14 0K 0K 78643K 51 0 temp 140 3872K 3954K 78643K 15810 0 kqueue 3 4K 12K 78643K 398 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 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 69 0 67 1 0 1 1 0 8 0 rtentry 112 113 0 88 2 0 2 2 0 8 0 unpcb 120 537 0 527 2 1 1 2 0 8 0 syncache 272 5 0 5 2 2 0 1 0 8 0 tcpqe 32 208 0 208 3 3 0 2 0 8 0 tcpcb 592 323 0 319 5 4 1 2 0 8 0 inpcb 296 1321 0 1314 5 3 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 35 0 33 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfstscr 40 4 0 4 3 3 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 10 0 9 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 50 0 35 4 2 2 2 0 8 0 pftag 88 2 0 1 2 1 1 1 0 8 0 pfstitem 24 16 0 14 1 0 1 1 0 8 0 pfstkey 112 24 0 22 1 0 1 1 0 8 0 pfstate 328 20 0 18 2 1 1 2 0 8 0 pfrule 1360 43 0 28 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 449 0 333 15 4 11 14 0 8 0 art_table 32 450 0 333 2 0 2 2 0 8 0 art_node 16 110 0 84 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 235 0 225 1 0 1 1 0 8 0 shmpl 112 55 0 8 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3146 0 1748 88 0 88 88 0 8 0 ffsino 272 3146 0 1748 94 0 94 94 0 8 0 nchpl 144 6383 0 4797 60 0 60 60 0 8 0 uvmvnodes 72 3508 0 0 64 0 64 64 0 8 0 vnodes 208 3508 0 0 185 0 185 185 0 8 0 namei 1024 16357 0 16357 3 2 1 1 0 8 1 percpumem 16 45 0 13 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 21 0 9 2 1 1 1 0 8 0 scxspl 200 15935 0 15935 14 13 1 7 0 8 1 plimitpl 152 93 0 85 1 0 1 1 0 8 0 sigapl 424 1691 0 1640 6 0 6 6 0 8 0 futexpl 56 22987 0 22987 3 2 1 1 0 8 1 knotepl 112 514 0 500 1 0 1 1 0 8 0 kqueuepl 152 716 0 711 1 0 1 1 0 8 0 pipepl 304 733 0 725 6 4 2 2 0 8 1 fdescpl 496 1655 0 1640 3 0 3 3 0 8 0 filepl 152 10988 0 10901 10 5 5 6 0 8 1 lockfpl 104 273 0 272 1 0 1 1 0 8 0 lockfspl 48 86 0 85 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 38 0 27 1 0 1 1 0 8 0 ucredpl 96 756 0 747 1 0 1 1 0 8 0 zombiepl 144 1641 0 1640 1 0 1 1 0 8 0 processpl 1008 1691 0 1640 7 0 7 7 0 8 0 procpl 632 4650 0 4592 6 0 6 6 0 8 1 sosppl 144 3 0 3 2 2 0 1 0 8 0 sockpl 400 1936 0 1917 13 9 4 5 0 8 2 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 289 0 0 36 0 36 36 0 8 0 mtagpl 96 53 0 0 2 0 2 2 0 8 0 mbufpl 256 380 0 0 18 0 18 18 0 8 0 bufpl 280 5947 0 139 415 0 415 415 0 8 0 anonpl 16 157826 0 140073 108 35 73 87 0 124 0 amapchunkpl 152 10211 0 9917 40 24 16 25 0 158 0 amappl16 192 7434 0 6607 68 26 42 53 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 15 0 10 1 0 1 1 0 8 0 amappl13 168 39 0 35 1 0 1 1 0 8 0 amappl12 160 25 0 23 1 0 1 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 1035 0 1029 1 0 1 1 0 8 0 amappl9 136 776 0 774 1 0 1 1 0 8 0 amappl8 128 836 0 762 3 0 3 3 0 8 0 amappl7 120 1131 0 1117 1 0 1 1 0 8 0 amappl6 112 31 0 23 1 0 1 1 0 8 0 amappl5 104 1570 0 1553 1 0 1 1 0 8 0 amappl4 96 508 0 477 1 0 1 1 0 8 0 amappl3 88 178 0 169 1 0 1 1 0 8 0 amappl2 80 12326 0 12254 2 0 2 2 0 8 0 amappl1 72 57510 0 57048 23 13 10 18 0 8 0 amappl 80 4953 0 4864 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 57 0 8 1 0 1 1 0 8 0 uaddrrnd 24 1663 0 1642 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1663 0 1642 1 0 1 1 0 8 0 vmmpekpl 168 18225 0 18185 2 0 2 2 0 8 0 vmmpepl 168 217032 0 214969 128 34 94 109 0 357 0 vmsppl 368 1662 0 1642 2 0 2 2 0 8 0 pdppl 4096 3333 0 3290 7 1 6 6 0 8 0 pvpl 32 497411 0 476413 262 87 175 204 0 265 2 pmappl 232 1662 0 1642 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 292 0 21 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(ffffffff82785ff0) 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 __sanitizer_cov_trace_cmp4(ffffffff82933140,ffffffff82933140) at __sanitizer_cov_trace_cmp4+0xb kd_curproc sys/dev/kcov.c:162 [inline] __sanitizer_cov_trace_cmp4(ffffffff82933140,ffffffff82933140) at __sanitizer_cov_trace_cmp4+0xb trace_cmp sys/dev/kcov.c:134 [inline] __sanitizer_cov_trace_cmp4(ffffffff82933140,ffffffff82933140) at __sanitizer_cov_trace_cmp4+0xb sys/dev/kcov.c:163 __mp_acquire_count(ffffffff82933140,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e18bf0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e18bf0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e18bf0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828c1bbc,118,ffffffff8246aadb,cccc7f8) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020dd7150,7f7fffff4540,3,ffff800020e18d88,0,ffff800020e18e40) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020dd7150,ffff800020e18df0,ffff800020e18e40) at sys_poll+0xa6 syscall(ffff800020e18ec0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e18ec0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4520, count: -13 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(afad) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000afc900) 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:1032 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(ffff800023f00610) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806f0df418,7,fffffd807f7bfa80,ffff800020eb2c70) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067e687d0,ffff800020eb2c70) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067e687d0,ffff800020eb2c70) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067e687d0,ffff800020eb2c70) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067e687d0,ffff800020eb2c70) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb2c70) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb2c70,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb2c70,ffff800023f008a0,ffff800023f008f0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f00970) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f00970) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0720, count: -16