kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace in_delmulti(ffbffffffedfffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad6300) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d783930) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d735680,7,fffffd806c3bfb40,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805eab2e88,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805eab2e88,ffff8000ffff8280) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8280,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8280,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8280,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d783db0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d783db0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3670, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d783700 rbx 0 rdx 0 rcx 0x1 rax 0xffff8000ffff8280 r8 0xffff800000ad6300 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xe5a19f6b16ef542d r12 0 r13 0x3 r14 0xffbffffffedfffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7836a0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=186318 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff8018 process=0xffff80001d6c1280 user=0xffff80001d77e000, vmspace=0xfffffd806bc0a330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 13337 229610 0 0 3 0x14280 nfsidl nfsio 63768 133270 0 0 3 0x14280 nfsidl nfsio 12717 482154 0 0 3 0x14280 nfsidl nfsio 59646 474036 0 0 3 0x14280 nfsidl nfsio 41011 307327 0 0 3 0x14280 nfsidl nfsio 43452 19311 0 0 3 0x14280 nfsidl nfsio 14016 174709 0 0 3 0x14280 nfsidl nfsio 28524 438310 0 0 3 0x14280 nfsidl nfsio 63102 177214 0 0 3 0x14280 nfsidl nfsio 63755 256386 0 0 3 0x14280 nfsidl nfsio 90405 150929 0 0 3 0x14280 nfsidl nfsio 20487 74470 0 0 3 0x14280 nfsidl nfsio 86572 510329 0 0 3 0x14280 nfsidl nfsio 56550 88612 0 0 3 0x14280 nfsidl nfsio 7368 360439 0 0 3 0x14280 nfsidl nfsio 41528 423607 0 0 3 0x14280 nfsidl nfsio 24714 398994 0 0 3 0x14280 nfsidl nfsio 21276 169139 0 0 3 0x14280 nfsidl nfsio 59406 358309 0 0 3 0x14280 nfsidl nfsio 92393 273661 0 0 3 0x14280 nfsidl nfsio 91952 298714 62909 0 3 0x82 thrsleep syz-fuzzer 91952 460064 62909 0 3 0x4000082 thrsleep syz-fuzzer 91952 383194 62909 0 3 0x4000082 thrsleep syz-fuzzer 91952 373814 62909 0 3 0x4000082 thrsleep syz-fuzzer 91952 292961 62909 0 3 0x4000082 thrsleep syz-fuzzer 91952 350123 62909 0 3 0x4000082 kqread syz-fuzzer 91952 241170 62909 0 3 0x4000082 thrsleep syz-fuzzer 62909 270569 57456 0 3 0x10008a pause ksh 57456 304749 28822 0 3 0x92 select sshd 77758 159315 1 0 3 0x100083 ttyin getty 28822 509226 1 0 3 0x80 select sshd 47351 123109 30622 73 3 0x100010 biowait syslogd 30622 91166 1 0 3 0x100082 netio syslogd 59326 30201 1 77 2 0x100010 dhclient 52236 184756 1 0 3 0x80 poll dhclient 32863 12538 0 0 3 0x14200 bored smr 26602 272022 0 0 3 0x14200 pgzero zerothread 88780 38053 0 0 3 0x14200 aiodoned aiodoned 4933 267443 0 0 3 0x14200 syncer update 4753 3847 0 0 3 0x14200 cleaner cleaner 49347 215855 0 0 3 0x14200 reaper reaper 92428 377 0 0 3 0x14200 pgdaemon pagedaemon 12660 65949 0 0 3 0x14200 bored crynlk 95662 92236 0 0 3 0x14200 bored crypto 55323 26483 0 0 3 0x40014200 acpi0 acpi0 39033 392480 0 0 2 0x14200 softnet 92142 520361 0 0 2 0x14200 systqmp 42496 17327 0 0 3 0x14200 bored systq 57695 171806 0 0 3 0x40014200 bored softclock 41318 509101 0 0 3 0x40014200 idle0 1 244830 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9459 6328K 6595K 78643K 10661 0 pcb 13 8K 8K 78643K 39 0 rtable 76 2K 7K 78643K 327 0 ifaddr 42 10K 13K 78643K 104 0 sysctl 2 0K 0K 78643K 2 0 counters 20 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 168 0 iov 0 0K 12K 78643K 7 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1262 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 42 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 165 0 proc 49 38K 63K 78643K 400 0 subproc 14 0K 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 8 0 in_multi 28 1K 2K 78643K 57 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 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 200 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 121 38K 40K 78643K 1267 0 UVM aobj 16 4K 4K 78643K 17 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 14 0 NDP 6 0K 0K 78643K 16 0 temp 74 3857K 3921K 78643K 2494 0 kqueue 3 4K 6K 78643K 10 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 6 1 0 1 1 0 8 0 rtpcb 88 29 0 27 1 0 1 1 0 8 0 rtentry 112 58 0 29 2 0 2 2 0 8 0 unpcb 120 113 0 105 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 117 0 117 1 1 0 1 0 8 0 tcpcb 592 49 0 45 2 1 1 2 0 8 0 inpcb 296 155 0 148 2 1 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 10 0 7 1 0 1 1 0 8 0 pfosfp 40 9 0 0 1 0 1 1 0 8 0 pfosfpen 112 21 0 0 1 0 1 1 0 8 0 pfrktable 1344 34 0 34 1 1 0 1 0 8 0 pftag 88 8 0 8 1 1 0 1 0 8 0 pfrule 1360 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 262 0 90 14 2 12 14 0 8 0 art_table 32 263 0 90 2 0 2 2 0 8 0 art_node 16 57 0 21 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 38 0 28 1 0 1 1 0 8 0 shmpl 112 14 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1555 0 158 88 0 88 88 0 8 0 ffsino 240 1555 0 158 83 0 83 83 0 8 0 nchpl 144 1946 0 357 60 0 60 60 0 8 0 uvmvnodes 72 1633 0 0 30 0 30 30 0 8 0 vnodes 208 1633 0 0 86 0 86 86 0 8 0 namei 1024 5098 0 5098 1 1 0 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 10 1 1 0 1 0 8 0 scxspl 200 5710 0 5709 1 0 1 1 0 8 0 plimitpl 152 28 0 20 1 0 1 1 0 8 0 sigapl 424 368 0 321 6 0 6 6 0 8 0 futexpl 56 2333 0 2333 1 1 0 1 0 8 0 knotepl 112 79 0 63 1 0 1 1 0 8 0 kqueuepl 152 21 0 19 1 0 1 1 0 8 0 pipepl 272 98 0 89 2 1 1 2 0 8 0 fdescpl 432 334 0 321 2 0 2 2 0 8 0 filepl 120 1783 0 1708 5 2 3 5 0 8 0 lockfpl 104 23 0 22 1 0 1 1 0 8 0 lockfspl 48 9 0 8 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 18 0 8 1 0 1 1 0 8 0 ucredpl 96 121 0 114 1 0 1 1 0 8 0 zombiepl 144 323 0 319 1 0 1 1 0 8 0 processpl 944 368 0 319 7 0 7 7 0 8 0 procpl 632 534 0 479 5 0 5 5 0 8 0 sockpl 400 299 0 282 4 2 2 4 0 8 0 mcl64k 65536 2 0 2 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl9k 9216 3 0 3 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 1 1 0 1 0 8 0 mcl4k 4096 13 0 13 2 2 0 1 0 8 0 mcl2k 2048 95446 0 95402 17 10 7 14 0 8 0 mtagpl 96 10 0 10 2 1 1 1 0 8 1 mbufpl 256 151420 0 151360 13 4 9 10 0 8 0 bufpl 280 4711 0 116 329 0 329 329 0 8 0 anonpl 16 53757 0 38676 81 1 80 80 0 107 8 amapchunkpl 152 2030 0 1841 21 2 19 19 0 158 11 amappl16 192 1549 0 640 47 0 47 47 0 8 1 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 13 0 10 1 0 1 1 0 8 0 amappl13 168 41 0 37 1 0 1 1 0 8 0 amappl12 160 25 0 21 1 0 1 1 0 8 0 amappl11 152 50 0 41 1 0 1 1 0 8 0 amappl10 144 47 0 41 1 0 1 1 0 8 0 amappl9 136 392 0 390 1 0 1 1 0 8 0 amappl8 128 334 0 306 1 0 1 1 0 8 0 amappl7 120 143 0 133 1 0 1 1 0 8 0 amappl6 112 24 0 19 1 0 1 1 0 8 0 amappl5 104 244 0 235 1 0 1 1 0 8 0 amappl4 96 432 0 410 1 0 1 1 0 8 0 amappl3 88 124 0 113 1 0 1 1 0 8 0 amappl2 80 1780 0 1723 2 0 2 2 0 8 0 amappl1 72 16699 0 16312 23 14 9 17 0 8 0 amappl 80 780 0 729 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 16 0 1 1 0 1 1 0 8 0 uaddrrnd 24 338 0 324 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 338 0 324 1 0 1 1 0 8 0 vmmpekpl 168 6345 0 6321 2 0 2 2 0 8 0 vmmpepl 168 48827 0 46946 128 24 104 123 0 357 16 vmsppl 272 337 0 324 2 0 2 2 0 8 1 pdppl 4096 682 0 649 6 1 5 6 0 8 0 pvpl 32 201226 0 183154 301 17 284 298 0 265 115 pmappl 200 337 0 324 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 242 0 29 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(ffbffffffedfffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad6300) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d783930) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d735680,7,fffffd806c3bfb40,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805eab2e88,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805eab2e88,ffff8000ffff8280) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8280,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8280,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8280,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d783db0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d783db0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3670, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(ffbffffffedfffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad6300) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d783930) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d735680,7,fffffd806c3bfb40,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805eab2e88,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805eab2e88,ffff8000ffff8280) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8280,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8280,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8280,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d783db0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d783db0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3670, count: -17