login: kernel: protection 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 the kernel did not panic ddb{1}> trace in_delmulti(bffffff7ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a19200) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a11800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff800000a11800,a) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd807e25e790,8020699f,ffff800023bcfc60,ffff800020ac13d8) at ifioctl+0x16ad sys/net/if.c:2148 sys_ioctl(ffff800020ac13d8,ffff800023bcfd78,ffff800023bcfdc0) at sys_ioctl+0x5b9 syscall(ffff800023bcfe40) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023bcfe40) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a0bc449c30, count: -8 ddb{1}> show registers rdi 0xffffffff81eee24d in_delmulti+0x8d rsi 0x2e449 acpi_pdirpa+0x1a2b1 rbp 0xffff800023bcfa80 rbx 0 rdx 0x2e44a acpi_pdirpa+0x1a2b2 rcx 0xffff800022da2000 rax 0xffff800022da2000 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x9048edd7c9c7882c r12 0 r13 0x3 r14 0xbffffff7ffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023bcfa20 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=257152 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac0780,0xffffffff82634898 process=0xffff800020aec700 user=0xffff800023bca000, vmspace=0xfffffd8061e9c460 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76939 111786 14016 0 7 0 syz-executor.0 76939 174881 14016 0 3 0x4000080 ttyout syz-executor.0 58747 109751 11978 0 2 0 syz-executor.1 58747 480278 11978 0 3 0x4000080 msgwait syz-executor.1 *58747 257152 11978 0 7 0x4000000 syz-executor.1 71533 404801 0 0 3 0x14200 bored sosplice 11978 340496 71171 0 3 0x82 nanosleep syz-executor.1 14016 23544 71171 0 3 0x82 nanosleep syz-executor.0 71171 506987 9391 0 3 0x82 thrsleep syz-fuzzer 71171 493709 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 3449 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 205720 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 409299 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 22254 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 513296 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 411936 9391 0 3 0x4000082 thrsleep syz-fuzzer 71171 404229 9391 0 3 0x4000082 kqread syz-fuzzer 71171 359065 9391 0 3 0x4000082 thrsleep syz-fuzzer 9391 135507 42090 0 3 0x10008a pause ksh 42090 68032 18423 0 3 0x92 select sshd 14789 337017 1 0 3 0x100083 ttyin getty 18423 365092 1 0 3 0x80 select sshd 15169 502312 97229 74 3 0x100092 bpf pflogd 97229 287793 1 0 3 0x80 netio pflogd 19617 68851 4205 73 3 0x100090 kqread syslogd 4205 502034 1 0 3 0x100082 netio syslogd 93384 85254 1 77 2 0x100090 dhclient 12634 128485 1 0 3 0x80 poll dhclient 59574 302696 0 0 2 0x14200 zerothread 58937 203168 0 0 3 0x14200 aiodoned aiodoned 98611 500238 0 0 3 0x14200 syncer update 24935 206723 0 0 3 0x14200 cleaner cleaner 92930 383351 0 0 3 0x14200 reaper reaper 40888 86600 0 0 3 0x14200 pgdaemon pagedaemon 62058 80569 0 0 3 0x14200 bored crynlk 24241 73337 0 0 3 0x14200 bored crypto 96466 119971 0 0 3 0x40014200 acpi0 acpi0 14662 283995 0 0 3 0x40014200 idle1 30740 391706 0 0 3 0x14200 bored softnet 30026 332885 0 0 2 0x14200 systqmp 80846 288971 0 0 3 0x14200 bored systq 33606 317497 0 0 3 0x40014200 bored softclock 59674 62466 0 0 3 0x40014200 idle0 62586 256620 0 0 3 0x14200 bored smr 1 446826 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 58747 (syz-executor.1) thread 0xffff800020ac13d8 (257152) exclusive rwlock netlock r = 0 (0xffffffff82495598) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 ifioctl+0x16a0 sys/net/if.c:2148 #2 sys_ioctl+0x5b9 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826563c0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9530 6422K 7125K 78643K 11158 0 pcb 13 8K 8K 78643K 59 0 rtable 102 4K 5K 78643K 306 0 ifaddr 81 15K 15K 78643K 121 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1484 0 iov 0 0K 12K 78643K 45 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1387 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 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 62 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 182 0 proc 60 63K 95K 78643K 463 0 subproc 32 2K 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 28 0 in_multi 47 2K 2K 78643K 62 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 54 238K 238K 78643K 54 0 exec 0 0K 1K 78643K 247 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 134 87K 87K 78643K 1586 0 UVM aobj 29 2K 2K 78643K 33 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 40 0 NDP 14 0K 0K 78643K 24 0 temp 144 3023K 3090K 78643K 6049 0 kqueue 0 0K 0K 78643K 2 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 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 39 0 37 1 0 1 1 0 8 0 rtentry 112 56 0 18 2 0 2 2 0 8 0 unpcb 120 129 0 119 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 42 0 42 2 1 1 1 0 8 1 tcpcb 544 76 0 72 1 0 1 1 0 8 0 inpcb 280 281 0 273 2 0 2 2 0 8 1 nd6 48 5 0 2 1 0 1 1 0 8 0 ppxss 1128 5 0 5 1 0 1 1 0 8 1 pffrag 232 8 0 8 1 0 1 1 0 482 1 pffrnode 88 8 0 8 1 0 1 1 0 8 1 pffrent 40 276 0 276 1 0 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 pfstitem 24 25 0 0 1 0 1 1 0 8 0 pfstkey 112 25 0 0 1 0 1 1 0 8 0 pfstate 328 25 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 246 0 46 14 0 14 14 0 8 0 art_table 32 247 0 46 2 0 2 2 0 8 0 art_node 16 55 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 89 0 54 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 60 0 50 1 0 1 1 0 8 0 shmpl 112 31 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1681 0 268 46 0 46 46 0 8 0 ffsino 272 1681 0 268 95 0 95 95 0 8 0 nchpl 144 2161 0 539 61 0 61 61 0 8 0 uvmvnodes 72 1846 0 0 34 0 34 34 0 8 0 vnodes 208 1846 0 0 98 0 98 98 0 8 0 namei 1024 6509 0 6509 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 0 1 0 1 1 0 8 0 scxspl 192 6103 0 6103 8 1 7 7 0 8 7 plimitpl 152 35 0 27 1 0 1 1 0 8 0 sigapl 432 381 0 365 3 1 2 3 0 8 0 futexpl 56 4450 0 4450 1 0 1 1 0 8 1 knotepl 112 130 0 111 1 0 1 1 0 8 0 kqueuepl 104 189 0 187 1 0 1 1 0 8 0 pipepl 160 284 0 265 2 0 2 2 0 8 1 fdescpl 488 382 0 365 3 0 3 3 0 8 0 filepl 152 2926 0 2823 6 0 6 6 0 8 2 lockfpl 104 48 0 47 1 0 1 1 0 8 0 lockfspl 48 19 0 18 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 473 0 464 1 0 1 1 0 8 0 zombiepl 144 365 0 365 1 0 1 1 0 8 1 processpl 896 398 0 365 4 0 4 4 0 8 0 procpl 632 785 0 740 5 0 5 5 0 8 1 srpgc 64 2 0 0 1 0 1 1 0 8 0 sockpl 384 455 0 435 4 0 4 4 0 8 1 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 162 0 0 20 0 20 20 0 8 0 mtagpl 80 7 0 0 1 0 1 1 0 8 0 mbufpl 256 339 0 0 21 0 21 21 0 8 0 bufpl 280 6709 0 1340 384 0 384 384 0 8 0 anonpl 16 53159 0 32727 85 1 84 84 0 125 1 amapchunkpl 152 2100 0 1941 8 1 7 8 0 158 0 amappl16 192 1873 0 749 58 0 58 58 0 8 1 amappl15 184 60 0 55 1 0 1 1 0 8 0 amappl14 176 29 0 26 1 0 1 1 0 8 0 amappl13 168 83 0 81 1 0 1 1 0 8 0 amappl12 160 17 0 14 2 1 1 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 82 0 73 1 0 1 1 0 8 0 amappl9 136 613 0 608 1 0 1 1 0 8 0 amappl8 128 143 0 111 2 0 2 2 0 8 0 amappl7 120 168 0 155 1 0 1 1 0 8 0 amappl6 112 57 0 51 1 0 1 1 0 8 0 amappl5 104 132 0 117 1 0 1 1 0 8 0 amappl4 96 713 0 683 1 0 1 1 0 8 0 amappl3 88 123 0 115 1 0 1 1 0 8 0 amappl2 80 2159 0 2077 3 1 2 3 0 8 0 amappl1 72 18354 0 17877 25 15 10 20 0 8 0 amappl 80 1044 0 991 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 32 0 4 1 0 1 1 0 8 0 uaddrrnd 24 390 0 365 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 390 0 365 1 0 1 1 0 8 0 vmmpekpl 168 7129 0 7097 3 1 2 2 0 8 0 vmmpepl 168 54685 0 52233 142 10 132 137 0 357 25 vmsppl 368 389 0 365 3 0 3 3 0 8 0 pdppl 4096 787 0 738 7 0 7 7 0 8 0 pvpl 32 172330 0 148581 201 0 201 201 0 265 9 pmappl 232 389 0 365 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 174 0 3 5 0 5 5 0 8 0