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(fbafffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad9500) 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(ffff80001d7835e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d71c8f0,7,fffffd806c3bfa20,ffff8000ffff8770) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80647f2e10,ffff8000ffff8770) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80647f2e10,ffff8000ffff8770) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80647f2e10,ffff8000ffff8770) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80647f2e10,ffff8000ffff8770) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8770) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8770,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8770,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8770,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8770) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d783a60) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d783a60) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff56f0, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d7833b0 rbx 0 rdx 0 rcx 0x1 rax 0xffff8000ffff8770 r8 0xffff800000ad9500 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xe85f9788570e0f44 r12 0 r13 0x3 r14 0xfbafffffffffffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d783350 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=173433 stat=onproc flags process=a proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8c60,0xffff8000ffff89f8 process=0xffff80001d6c1280 user=0xffff80001d77e000, vmspace=0xfffffd806bc0a330 estcpu=36, cpticks=1, pctcpu=0.1 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 52125 277312 0 0 3 0x14200 bored sosplice 19146 271563 82551 0 3 0x82 piperd syz-executor.0 82551 153933 18241 0 3 0x82 thrsleep syz-fuzzer 82551 455511 18241 0 3 0x4000082 nanosleep syz-fuzzer 82551 455946 18241 0 3 0x4000082 thrsleep syz-fuzzer 82551 181487 18241 0 3 0x4000082 thrsleep syz-fuzzer 82551 57086 18241 0 3 0x4000082 thrsleep syz-fuzzer 82551 416377 18241 0 2 0x4000002 syz-fuzzer 82551 336891 18241 0 3 0x4000082 thrsleep syz-fuzzer 18241 52943 19682 0 3 0x10008a pause ksh 19682 396642 8084 0 3 0x92 select sshd 88666 425989 1 0 3 0x100083 ttyin getty 8084 518766 1 0 3 0x80 select sshd 41042 378257 64304 73 3 0x100090 kqread syslogd 64304 86398 1 0 3 0x100082 netio syslogd 16762 77480 1 77 2 0x100090 dhclient 37031 383768 1 0 3 0x80 poll dhclient 14348 276407 0 0 3 0x14200 bored smr 59050 395445 0 0 2 0x14200 zerothread 90269 41811 0 0 3 0x14200 aiodoned aiodoned 99319 293343 0 0 3 0x14200 syncer update 56229 432821 0 0 3 0x14200 cleaner cleaner 32703 410348 0 0 3 0x14200 reaper reaper 56372 80065 0 0 3 0x14200 pgdaemon pagedaemon 5162 269512 0 0 3 0x14200 bored crynlk 16821 414383 0 0 3 0x14200 bored crypto 75667 438780 0 0 3 0x40014200 acpi0 acpi0 94381 496383 0 0 3 0x14200 bored softnet 79227 339392 0 0 2 0x14200 systqmp 75031 365273 0 0 3 0x14200 bored systq 5078 95248 0 0 3 0x40014200 bored softclock 76876 496070 0 0 3 0x40014200 idle0 1 406936 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 9484 6337K 6734K 78643K 11081 0 pcb 13 8K 8K 78643K 75 0 rtable 116 8K 10K 78643K 410 0 ifaddr 72 15K 16K 78643K 136 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 99 0 iov 0 0K 16K 78643K 38 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1371 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 104 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 437 0 sigio 0 0K 0K 78643K 6 0 proc 51 38K 63K 78643K 422 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 37 0 in_multi 54 2K 3K 78643K 134 0 ether_multi 1 0K 0K 78643K 14 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 208 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 150 40K 58K 78643K 1884 0 UVM aobj 27 2K 2K 78643K 30 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 54 0 NDP 10 0K 0K 78643K 26 0 temp 100 3865K 3929K 78643K 11570 0 kqueue 3 4K 18K 78643K 32 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 6 0 2 1 0 1 1 0 8 0 rtpcb 88 35 0 33 1 0 1 1 0 8 0 rtentry 112 66 0 29 2 0 2 2 0 8 0 unpcb 120 260 0 251 1 0 1 1 0 8 0 syncache 272 8 0 8 2 2 0 1 0 8 0 tcpqe 32 175 0 175 1 1 0 1 0 8 0 tcpcb 592 229 0 225 5 3 2 2 0 8 1 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 6 0 6 1 1 0 1 0 8 0 inpcb 296 1495 0 1488 9 7 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 16 0 12 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 61 0 52 3 2 1 2 0 8 0 pftag 88 5 0 4 1 0 1 1 0 8 0 pfstkey 112 4 0 4 1 1 0 1 0 8 0 pfstate 328 2 0 2 1 1 0 1 0 8 0 pfrule 1360 28 0 12 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 262 0 90 13 0 13 13 0 8 0 art_table 32 263 0 90 2 0 2 2 0 8 0 art_node 16 65 0 27 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 8 2 2 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 98 0 88 1 0 1 1 0 8 0 shmpl 112 27 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1954 0 557 88 0 88 88 0 8 0 ffsino 240 1954 0 557 83 0 83 83 0 8 0 nchpl 144 2721 0 1134 60 0 60 60 0 8 0 uvmvnodes 72 2108 0 0 39 0 39 39 0 8 0 vnodes 208 2108 0 0 111 0 111 111 0 8 0 namei 1024 7487 0 7487 2 1 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 22 0 14 2 1 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 8212 0 8212 1 0 1 1 0 8 1 plimitpl 152 46 0 39 1 0 1 1 0 8 0 sigapl 424 624 0 596 4 0 4 4 0 8 0 futexpl 56 9902 0 9902 2 1 1 1 0 8 1 knotepl 112 96 0 78 1 0 1 1 0 8 0 kqueuepl 152 58 0 56 1 0 1 1 0 8 0 pipepl 272 119 0 109 4 3 1 2 0 8 0 fdescpl 432 609 0 596 2 0 2 2 0 8 0 filepl 120 4092 0 4006 4 0 4 4 0 8 0 lockfpl 104 93 0 92 1 0 1 1 0 8 0 lockfspl 48 38 0 37 1 0 1 1 0 8 0 sessionpl 120 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 341 0 334 1 0 1 1 0 8 0 zombiepl 144 597 0 596 1 0 1 1 0 8 0 processpl 944 624 0 596 4 0 4 4 0 8 0 procpl 632 1150 0 1116 4 0 4 4 0 8 0 sosppl 144 7 0 7 2 2 0 1 0 8 0 sockpl 400 1795 0 1777 6 3 3 4 0 8 0 mcl64k 65536 29 0 29 6 6 0 1 0 8 0 mcl16k 16384 3 0 3 3 3 0 1 0 8 0 mcl12k 12288 14 0 14 7 6 1 1 0 8 1 mcl9k 9216 7 0 7 6 6 0 1 0 8 0 mcl8k 8192 20 0 20 8 7 1 1 0 8 1 mcl4k 4096 47 0 47 7 6 1 1 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 95646 0 95595 18 10 8 14 0 8 0 mtagpl 96 50 0 46 2 1 1 1 0 8 0 mbufpl 256 153945 0 153848 20 3 17 17 0 8 2 bufpl 280 5988 0 634 383 0 383 383 0 8 0 anonpl 16 77182 0 58359 116 22 94 94 0 107 15 amapchunkpl 152 3035 0 2858 26 9 17 17 0 158 9 amappl16 192 2799 0 1780 69 16 53 62 0 8 1 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 377 0 372 1 0 1 1 0 8 0 amappl13 168 59 0 55 1 0 1 1 0 8 0 amappl12 160 21 0 18 1 0 1 1 0 8 0 amappl11 152 421 0 410 1 0 1 1 0 8 0 amappl10 144 18 0 15 1 0 1 1 0 8 0 amappl9 136 359 0 357 1 0 1 1 0 8 0 amappl8 128 330 0 282 2 0 2 2 0 8 0 amappl7 120 101 0 90 1 0 1 1 0 8 0 amappl6 112 26 0 22 1 0 1 1 0 8 0 amappl5 104 163 0 153 1 0 1 1 0 8 0 amappl4 96 834 0 807 1 0 1 1 0 8 0 amappl3 88 507 0 498 1 0 1 1 0 8 0 amappl2 80 4117 0 4059 2 0 2 2 0 8 0 amappl1 72 22598 0 22200 23 14 9 17 0 8 0 amappl 80 1390 0 1338 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 29 0 3 1 0 1 1 0 8 0 uaddrrnd 24 613 0 598 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 613 0 598 1 0 1 1 0 8 0 vmmpekpl 168 7608 0 7583 2 0 2 2 0 8 0 vmmpepl 168 81521 0 79483 137 41 96 116 0 357 2 vmsppl 272 612 0 598 3 1 2 2 0 8 1 pdppl 4096 1232 0 1198 6 1 5 6 0 8 0 pvpl 32 243287 0 221567 354 47 307 307 0 265 126 pmappl 200 612 0 598 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 278 0 49 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fbafffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad9500) 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(ffff80001d7835e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d71c8f0,7,fffffd806c3bfa20,ffff8000ffff8770) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80647f2e10,ffff8000ffff8770) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80647f2e10,ffff8000ffff8770) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80647f2e10,ffff8000ffff8770) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80647f2e10,ffff8000ffff8770) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8770) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8770,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8770,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8770,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8770) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d783a60) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d783a60) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff56f0, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fbafffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad9500) 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(ffff80001d7835e0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d71c8f0,7,fffffd806c3bfa20,ffff8000ffff8770) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80647f2e10,ffff8000ffff8770) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80647f2e10,ffff8000ffff8770) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80647f2e10,ffff8000ffff8770) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80647f2e10,ffff8000ffff8770) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8770) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8770,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8770,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8770,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8770) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d783a60) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d783a60) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff56f0, count: -17