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(bffffffdffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a14300) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a15000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff800000a15000,a) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd806f664780,8020699f,ffff800021b9ae80,ffff800020ac1160) at ifioctl+0x16ad sys/net/if.c:2148 sys_ioctl(ffff800020ac1160,ffff800021b9af98,ffff800021b9afe0) at sys_ioctl+0x5b9 syscall(ffff800021b9b060) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021b9b060) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x720a0fe32c0, count: -8 ddb{1}> show registers rdi 0xffffffff81eee24d in_delmulti+0x8d rsi 0x30b5f acpi_pdirpa+0x1c9c7 rbp 0xffff800021b9aca0 rbx 0 rdx 0x30b60 acpi_pdirpa+0x1c9c8 rcx 0xffff800022996000 rax 0xffff800022996000 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x3076c16f19a64986 r12 0 r13 0x3 r14 0xbffffffdffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021b9ac40 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=316205 stat=onproc flags process=0 proc=4000000 pri=56, usrpri=56, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac18c8,0xffffffff82634898 process=0xffff800020aedc00 user=0xffff800021b96000, vmspace=0xfffffd807f008450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16163 504944 2832 0 7 0 syz-executor.1 *16163 316205 2832 0 7 0x4000000 syz-executor.1 22288 412324 0 0 3 0x14200 bored sosplice 2832 432135 44643 0 3 0x82 nanosleep syz-executor.1 1993 386181 44643 0 3 0x82 nanosleep syz-executor.0 44643 33454 41717 0 3 0x82 thrsleep syz-fuzzer 44643 454094 41717 0 3 0x4000082 nanosleep syz-fuzzer 44643 146220 41717 0 3 0x4000082 thrsleep syz-fuzzer 44643 84565 41717 0 3 0x4000082 thrsleep syz-fuzzer 44643 186104 41717 0 3 0x4000082 thrsleep syz-fuzzer 44643 120148 41717 0 3 0x4000082 thrsleep syz-fuzzer 44643 442013 41717 0 3 0x4000082 thrsleep syz-fuzzer 44643 38541 41717 0 3 0x4000082 thrsleep syz-fuzzer 44643 290395 41717 0 3 0x4000082 kqread syz-fuzzer 44643 67564 41717 0 3 0x4000082 thrsleep syz-fuzzer 41717 420910 23313 0 3 0x10008a pause ksh 23313 345749 18512 0 3 0x92 select sshd 21029 239449 1 0 3 0x100083 ttyin getty 18512 241436 1 0 3 0x80 select sshd 99734 131504 15645 74 3 0x100092 bpf pflogd 15645 339980 1 0 3 0x80 netio pflogd 91849 199154 31674 73 3 0x100090 kqread syslogd 31674 80118 1 0 3 0x100082 netio syslogd 84321 162403 1 77 2 0x100090 dhclient 25430 102017 1 0 3 0x80 poll dhclient 86941 355829 0 0 3 0x14200 pgzero zerothread 88572 43235 0 0 3 0x14200 aiodoned aiodoned 34100 41982 0 0 3 0x14200 syncer update 74211 484166 0 0 3 0x14200 cleaner cleaner 14296 449821 0 0 3 0x14200 reaper reaper 21447 488367 0 0 3 0x14200 pgdaemon pagedaemon 57972 214197 0 0 3 0x14200 bored crynlk 39537 318674 0 0 3 0x14200 bored crypto 11006 33185 0 0 3 0x40014200 acpi0 acpi0 57292 120516 0 0 3 0x40014200 idle1 61536 443104 0 0 3 0x14200 bored softnet 77779 320734 0 0 3 0x14200 bored systqmp 9738 263342 0 0 3 0x14200 bored systq 2696 69725 0 0 3 0x40014200 bored softclock 20014 251738 0 0 3 0x40014200 idle0 66969 466347 0 0 3 0x14200 bored smr 1 97560 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16163 (syz-executor.1) thread 0xffff800020ac1160 (316205) 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 9479 6400K 6656K 78643K 10703 0 pcb 13 8K 8K 78643K 51 0 rtable 105 4K 4K 78643K 232 0 ifaddr 50 11K 12K 78643K 63 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1473 0 iov 0 0K 16K 78643K 12 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1275 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 103 0 proc 59 63K 95K 78643K 440 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 16 0 in_multi 42 2K 2K 78643K 43 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 48 212K 212K 78643K 48 0 exec 0 0K 1K 78643K 213 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 116 22K 26K 78643K 1261 0 UVM aobj 6 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 32 0 NDP 7 0K 0K 78643K 13 0 temp 85 3010K 3648K 78643K 6179 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 21 0 19 1 0 1 1 0 8 0 rtentry 112 46 0 5 2 0 2 2 0 8 0 unpcb 120 61 0 51 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 111 0 111 1 1 0 1 0 8 0 tcpcb 544 62 0 58 2 0 2 2 0 8 1 inpcb 280 156 0 147 2 0 2 2 0 8 1 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 2 0 2 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 16 0 1 1 0 1 1 0 8 0 pfstkey 112 16 0 1 1 0 1 1 0 8 0 pfstate 328 16 0 1 2 0 2 2 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 256 213 0 4 14 0 14 14 0 8 0 art_table 32 214 0 4 2 0 2 2 0 8 0 art_node 16 45 0 8 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1539 0 132 46 0 46 46 0 8 0 ffsino 272 1539 0 132 95 0 95 95 0 8 0 nchpl 144 1913 0 292 61 0 61 61 0 8 0 uvmvnodes 72 1619 0 0 30 0 30 30 0 8 0 vnodes 208 1619 0 0 86 0 86 86 0 8 0 namei 1024 4999 0 4999 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 5227 0 5227 7 1 6 6 0 8 6 plimitpl 152 21 0 13 1 0 1 1 0 8 0 sigapl 432 302 0 287 3 1 2 3 0 8 0 futexpl 56 1692 0 1692 1 0 1 1 0 8 1 knotepl 112 57 0 38 1 0 1 1 0 8 0 kqueuepl 104 24 0 22 1 0 1 1 0 8 0 pipepl 160 196 0 177 2 0 2 2 0 8 1 fdescpl 488 303 0 287 3 0 3 3 0 8 0 filepl 152 1800 0 1699 6 0 6 6 0 8 2 lockfpl 104 38 0 37 1 0 1 1 0 8 0 lockfspl 48 13 0 12 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 135 0 126 1 0 1 1 0 8 0 zombiepl 144 287 0 286 1 0 1 1 0 8 0 processpl 896 319 0 286 4 0 4 4 0 8 0 procpl 632 479 0 436 5 0 5 5 0 8 1 srpgc 64 2 0 0 1 0 1 1 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 384 238 0 218 5 0 5 5 0 8 3 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 163 0 0 20 0 20 20 0 8 0 mtagpl 80 4 0 0 1 0 1 1 0 8 0 mbufpl 256 189 0 0 12 0 12 12 0 8 0 bufpl 280 6434 0 1346 364 0 364 364 0 8 0 anonpl 16 52754 0 32674 95 1 94 94 0 125 13 amapchunkpl 152 1667 0 1490 11 0 11 11 0 158 2 amappl16 192 1683 0 588 60 0 60 60 0 8 5 amappl15 184 58 0 54 1 0 1 1 0 8 0 amappl14 176 77 0 71 1 0 1 1 0 8 0 amappl13 168 31 0 30 1 0 1 1 0 8 0 amappl12 160 5 0 3 1 0 1 1 0 8 0 amappl11 152 58 0 41 1 0 1 1 0 8 0 amappl10 144 20 0 11 1 0 1 1 0 8 0 amappl9 136 612 0 608 1 0 1 1 0 8 0 amappl8 128 131 0 105 1 0 1 1 0 8 0 amappl7 120 102 0 91 1 0 1 1 0 8 0 amappl6 112 60 0 54 1 0 1 1 0 8 0 amappl5 104 125 0 112 1 0 1 1 0 8 0 amappl4 96 544 0 515 1 0 1 1 0 8 0 amappl3 88 197 0 186 1 0 1 1 0 8 0 amappl2 80 1464 0 1391 3 1 2 3 0 8 0 amappl1 72 16686 0 16232 27 16 11 21 0 8 1 amappl 80 740 0 692 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 7 0 2 1 0 1 1 0 8 0 uaddrrnd 24 303 0 287 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 303 0 287 1 0 1 1 0 8 0 vmmpekpl 168 6278 0 6246 2 0 2 2 0 8 0 vmmpepl 168 45408 0 43122 138 7 131 133 0 357 30 vmsppl 368 302 0 287 2 0 2 2 0 8 0 pdppl 4096 613 0 574 6 0 6 6 0 8 1 pvpl 32 159782 0 136549 221 0 221 221 0 265 33 pmappl 232 302 0 287 2 1 1 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 163 0 3 5 0 5 5 0 8 0