uvm_fault(0xfffffd807effe450, 0xe7, 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(0xfffffd807effe450, 0xe7, 0, 1) -> e in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff8000230f6400, count: 0 ddb{1}> trace in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) 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(ffff8000230f65e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed5b5b8,7,fffffd807f7bfa20,ffff800022ee9170) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067ffa310,ffff800022ee9170) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067ffa310,ffff800022ee9170) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067ffa310,ffff800022ee9170) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067ffa310,ffff800022ee9170) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800022ee9170) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800022ee9170,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800022ee9170,ffff8000230f6870,ffff8000230f68c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000230f6940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230f6940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdb2e0, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff8000230f63b0 rbx 0 rdx 0 rcx 0 rax 0xffff800022ee9170 r8 0xffff800000af9900 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0xbe3864cbe333920 r12 0 r13 0x3 r14 0xdb r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230f6350 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=303646 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=71, nice=20 forw=0xffffffffffffffff, list=0xffff800020e3db48,0xffff800022ee8a18 process=0xffff800022ce47e0 user=0xffff8000230f1000, vmspace=0xfffffd807effe450 estcpu=21, cpticks=1, pctcpu=0.8 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34759 139662 97271 0 2 0 syz-executor.1 34759 145239 97271 0 2 0x4000000 syz-executor.1 62682 108540 0 0 3 0x14280 nfsidl nfsio 7168 143780 0 0 3 0x14280 nfsidl nfsio 64371 164693 0 0 3 0x14280 nfsidl nfsio 37548 394424 0 0 3 0x14280 nfsidl nfsio 96516 82840 0 0 3 0x14280 nfsidl nfsio 38973 42759 0 0 3 0x14280 nfsidl nfsio 45583 50837 0 0 3 0x14280 nfsidl nfsio 86035 475337 0 0 3 0x14280 nfsidl nfsio 24613 423199 0 0 3 0x14280 nfsidl nfsio 14312 273124 0 0 3 0x14280 nfsidl nfsio 54977 195129 0 0 3 0x14280 nfsidl nfsio 22126 522522 0 0 3 0x14280 nfsidl nfsio 84969 146414 0 0 3 0x14280 nfsidl nfsio 20388 387834 0 0 3 0x14280 nfsidl nfsio 24201 24827 0 0 3 0x14280 nfsidl nfsio 98051 1743 0 0 3 0x14280 nfsidl nfsio 21767 332647 0 0 3 0x14280 nfsidl nfsio 36993 221666 0 0 3 0x14280 nfsidl nfsio 20367 57629 0 0 3 0x14280 nfsidl nfsio 40014 491034 0 0 3 0x14280 nfsidl nfsio 88010 169067 0 0 3 0x14200 bored sosplice 97271 280776 65287 0 2 0x482 syz-executor.1 65287 300764 78859 0 3 0x82 thrsleep syz-fuzzer 65287 173127 78859 0 3 0x4000082 nanosleep syz-fuzzer 65287 495953 78859 0 2 0x4000482 syz-fuzzer 65287 110303 78859 0 3 0x4000082 thrsleep syz-fuzzer 65287 339142 78859 0 3 0x4000082 kqread syz-fuzzer 65287 458775 78859 0 3 0x4000082 thrsleep syz-fuzzer 65287 5652 78859 0 3 0x4000082 thrsleep syz-fuzzer 65287 230256 78859 0 2 0x4000002 syz-fuzzer 78859 83898 76602 0 3 0x10008a pause ksh 76602 286898 86213 0 3 0x92 select sshd 30051 515961 1 0 3 0x100083 ttyin getty 86213 12515 1 0 3 0x80 select sshd 45158 115525 82566 74 7 0x100012 pflogd 82566 86537 1 0 3 0x80 netio pflogd 92119 121470 10850 73 3 0x100090 kqread syslogd 10850 247952 1 0 3 0x100082 netio syslogd 79889 435680 1 77 2 0x100090 dhclient 37858 459379 1 0 3 0x80 poll dhclient 28556 495090 0 0 3 0x14200 bored smr 78250 68376 0 0 3 0x14200 pgzero zerothread 25240 153222 0 0 3 0x14200 aiodoned aiodoned 89550 384593 0 0 3 0x14200 syncer update 30117 148064 0 0 3 0x14200 cleaner cleaner 16472 214320 0 0 3 0x14200 reaper reaper 70239 458496 0 0 3 0x14200 pgdaemon pagedaemon 67192 197392 0 0 3 0x14200 bored crynlk 68998 75763 0 0 3 0x14200 bored crypto 812 75082 0 0 3 0x40014200 acpi0 acpi0 83114 414029 0 0 3 0x40014200 idle1 11684 132162 0 0 3 0x14200 bored softnet 20476 497688 0 0 2 0x14200 systqmp 48722 181619 0 0 3 0x14200 bored systq 67630 191171 0 0 3 0x40014200 bored softclock 63716 112615 0 0 3 0x40014200 idle0 1 306668 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 9514 6484K 7001K 78643K 11440 0 pcb 13 8K 8K 78643K 490 0 rtable 91 4K 7K 78643K 396 0 ifaddr 80 16K 17K 78643K 149 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1556 0 iov 0 0K 16K 78643K 190 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1465 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 35 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 534 0 sigio 0 0K 0K 78643K 9 0 proc 61 63K 95K 78643K 478 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 33 0 in_multi 66 3K 3K 78643K 142 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 1 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 245 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 171 59K 59K 78643K 2777 0 UVM aobj 27 4K 4K 78643K 31 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 60 0 NDP 11 0K 0K 78643K 26 0 temp 107 3867K 3931K 78643K 9756 0 kqueue 3 4K 12K 78643K 37 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 9 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 32 0 30 1 0 1 1 0 8 0 rtentry 112 90 0 57 2 0 2 2 0 8 0 unpcb 120 311 0 297 1 0 1 1 0 8 0 syncache 272 6 0 6 2 1 1 1 0 8 1 tcpqe 32 466 0 466 1 1 0 1 0 8 0 tcpcb 592 156 0 148 3 1 2 2 0 8 1 inpcb 296 950 0 943 2 0 2 2 0 8 1 nd6 48 18 0 12 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 2 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 5 0 5 2 1 1 1 0 482 1 pffrnode 88 5 0 5 2 1 1 1 0 8 1 pffrent 40 140 0 140 2 1 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 pfrktable 1344 15 0 12 1 0 1 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfstitem 24 52 0 19 1 0 1 1 0 8 0 pfstkey 112 54 0 21 2 0 2 2 0 8 0 pfstate 328 52 0 19 4 0 4 4 0 8 0 pfrule 1360 30 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 376 0 179 15 2 13 13 0 8 0 art_table 32 377 0 179 2 0 2 2 0 8 0 art_node 16 73 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 27 0 17 1 0 1 1 0 8 0 shmpl 112 28 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2096 0 699 89 1 88 89 0 8 0 ffsino 272 2096 0 699 94 0 94 94 0 8 0 nchpl 144 3125 0 1536 60 0 60 60 0 8 0 uvmvnodes 72 2337 0 0 43 0 43 43 0 8 0 vnodes 208 2337 0 0 123 0 123 123 0 8 0 namei 1024 8711 0 8711 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 9 0 6 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 3 1 0 1 1 0 8 0 scxspl 200 8996 0 8996 11 8 3 7 0 8 3 plimitpl 152 47 0 39 1 0 1 1 0 8 0 sigapl 424 770 0 718 6 0 6 6 0 8 0 futexpl 56 7251 0 7251 1 0 1 1 0 8 1 knotepl 112 121 0 107 1 0 1 1 0 8 0 kqueuepl 152 114 0 108 1 0 1 1 0 8 0 pipepl 304 142 0 134 3 1 2 2 0 8 1 fdescpl 496 734 0 718 3 0 3 3 0 8 0 filepl 152 4586 0 4494 5 0 5 5 0 8 0 lockfpl 104 241 0 240 1 0 1 1 0 8 0 lockfspl 48 66 0 65 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 588 0 579 1 0 1 1 0 8 0 zombiepl 144 719 0 718 1 0 1 1 0 8 0 processpl 1008 770 0 718 7 0 7 7 0 8 0 procpl 632 1931 0 1871 6 0 6 6 0 8 0 sosppl 144 6 0 6 2 1 1 1 0 8 1 sockpl 400 1302 0 1279 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 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 172 0 0 21 0 21 21 0 8 0 mtagpl 96 37 0 0 1 0 1 1 0 8 0 mbufpl 256 349 0 0 21 0 21 21 0 8 0 bufpl 280 4206 0 126 292 0 292 292 0 8 0 anonpl 16 97899 0 79198 91 10 81 91 0 124 5 amapchunkpl 152 4942 0 4535 29 13 16 26 0 158 0 amappl16 192 3277 0 2427 59 16 43 55 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 245 0 243 1 0 1 1 0 8 0 amappl13 168 285 0 279 1 0 1 1 0 8 0 amappl12 160 283 0 276 1 0 1 1 0 8 0 amappl11 152 295 0 279 1 0 1 1 0 8 0 amappl10 144 13 0 10 1 0 1 1 0 8 0 amappl9 136 364 0 362 1 0 1 1 0 8 0 amappl8 128 341 0 306 2 0 2 2 0 8 0 amappl7 120 118 0 106 1 0 1 1 0 8 0 amappl6 112 33 0 25 1 0 1 1 0 8 0 amappl5 104 144 0 129 1 0 1 1 0 8 0 amappl4 96 992 0 961 1 0 1 1 0 8 0 amappl3 88 636 0 625 1 0 1 1 0 8 0 amappl2 80 4944 0 4867 2 0 2 2 0 8 0 amappl1 72 31400 0 30926 23 12 11 18 0 8 0 amappl 80 2236 0 2154 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 30 0 4 1 0 1 1 0 8 0 uaddrrnd 24 743 0 724 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 743 0 724 1 0 1 1 0 8 0 vmmpekpl 168 9317 0 9276 3 0 3 3 0 8 0 vmmpepl 168 101944 0 99821 118 21 97 108 0 357 1 vmsppl 368 742 0 724 2 0 2 2 0 8 0 pdppl 4096 1493 0 1451 7 1 6 6 0 8 0 pvpl 32 287328 0 265000 215 11 204 215 0 265 23 pmappl 232 742 0 724 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 9 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+0x5f sys/dev/kcov.c:165 vn_read(fffffd806eae3c80,ffff800020e60618,0) at vn_read+0x45 sys/kern/vfs_vnops.c:357 dofilereadv(ffff8000fffff3d0,4,ffff800020e60618,0,ffff800020e60700) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000fffff3d0,ffff800020e606b0,ffff800020e60700) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e60780) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e60780) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcb560, count: -9 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(db) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) 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(ffff8000230f65e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed5b5b8,7,fffffd807f7bfa20,ffff800022ee9170) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067ffa310,ffff800022ee9170) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067ffa310,ffff800022ee9170) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067ffa310,ffff800022ee9170) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067ffa310,ffff800022ee9170) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800022ee9170) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800022ee9170,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800022ee9170,ffff8000230f6870,ffff8000230f68c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000230f6940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230f6940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdb2e0, count: -16