uvm_fault(0xffffffff8257b240, 0xffff8000227b5c2c, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8257b240, 0xffff8000227b5c2c, 0, 1) -> e in_delmulti(ffff8000227b5c20) at in_delmulti+0x8d sys/netinet/in.c:840 end trace frame: 0xffff800020b37880, count: 0 ddb{0}> trace in_delmulti(ffff8000227b5c20) at in_delmulti+0x8d sys/netinet/in.c:840 in_purgeaddr(ffff800000a47e00) at in_purgeaddr+0x156 sys/netinet/in.c:686 in_ioctl_change_ifaddr(80206919,ffff800020b37a80,ffff800000af2000,1) at in_ioctl_change_ifaddr+0x1a4 sys/netinet/in.c:475 in_ioctl(80206919,ffff800020b37a80,ffff800000af2000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806f6d1600,80206919,ffff800020b37a80,ffff800020ab0018) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab0018,ffff800020b37b90,ffff800020b37be0) at sys_ioctl+0x5b9 syscall(ffff800020b37c60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b37c60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,36,801169ab,36,7f7ffffdc6f8,b1fdcb63070) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc660, count: -8 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020b37830 rbx 0xffffff00 rdx 0xffff800020ab0018 rcx 0 rax 0 r8 0xffffffff81785e93 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0xee8e85b771c7398e r12 0 r13 0x3 r14 0xffff8000227b5c20 r15 0x1 rip 0xffffffff81f7a0ad in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020b377d0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (ifconfig) pid=335309 stat=onproc flags process=2 proc=0 pri=52, usrpri=52, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0c70,0xffffffff8264c6f8 process=0xffff800020adc000 user=0xffff800020b32000, vmspace=0xfffffd807f00a170 estcpu=24, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *83284 335309 40483 0 7 0x2 ifconfig 40483 337344 7430 0 3 0x10008a pause sh 7430 183634 96424 0 3 0x82 wait syz-executor.1 99668 496503 0 0 3 0x14200 bored sosplice 58744 169360 96424 0 3 0x82 piperd syz-executor.0 96424 144730 85662 0 3 0x82 kqread syz-fuzzer 96424 263615 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 289906 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 154578 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 9967 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 37451 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 128343 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 177474 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 206031 85662 0 3 0x4000082 thrsleep syz-fuzzer 96424 61434 85662 0 3 0x4000082 thrsleep syz-fuzzer 85662 277117 45321 0 3 0x10008a pause ksh 45321 290180 30327 0 3 0x92 select sshd 42295 142144 1 0 3 0x100083 ttyin getty 30327 456959 1 0 3 0x80 select sshd 65586 512708 23089 74 3 0x100092 bpf pflogd 23089 180635 1 0 3 0x80 netio pflogd 18560 354579 27395 73 3 0x100090 kqread syslogd 27395 82748 1 0 3 0x100082 netio syslogd 29396 271280 1 77 3 0x100090 poll dhclient 15082 57667 1 0 3 0x80 poll dhclient 55003 453160 0 0 3 0x14200 pgzero zerothread 20340 44268 0 0 3 0x14200 aiodoned aiodoned 32282 224635 0 0 3 0x14200 syncer update 16106 519830 0 0 3 0x14200 cleaner cleaner 83073 77504 0 0 3 0x14200 reaper reaper 84359 330669 0 0 3 0x14200 pgdaemon pagedaemon 90864 149853 0 0 3 0x14200 bored crynlk 60937 113576 0 0 3 0x14200 bored crypto 54309 145208 0 0 3 0x40014200 acpi0 acpi0 57548 384071 0 0 3 0x40014200 idle1 21120 10325 0 0 3 0x14200 bored softnet 13481 336804 0 0 7 0x14200 systqmp 22835 497886 0 0 3 0x14200 bored systq 63735 46783 0 0 3 0x40014200 bored softclock 3807 133295 0 0 3 0x40014200 idle0 92420 521539 0 0 3 0x14200 bored smr 1 185783 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 83284 (ifconfig) thread 0xffff800020ab0018 (335309) exclusive rwlock netlock r = 0 (0xffffffff824e8728) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl_change_ifaddr+0x3f #2 in_ioctl+0x205 sys/netinet/in.c:234 #3 ifioctl+0xb64 sys/net/if.c:2202 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8266bc58) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9525 6410K 7179K 78643K 11541 0 0 pcb 13 8K 9K 78643K 89 0 0 rtable 74 11K 12K 78643K 463 0 0 ifaddr 59 12K 13K 78643K 126 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1485 0 0 iov 0 0K 16K 78643K 57 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1221 77K 77K 78643K 1530 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 11 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 131 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 350 0 0 sigio 0 0K 0K 78643K 66 0 0 proc 67 75K 95K 78643K 567 0 0 subproc 32 2K 2K 78643K 85 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 19 0 0 in_multi 12 0K 2K 78643K 69 0 0 ether_multi 1 0K 0K 78643K 7 0 0 mrt 0 0K 0K 78643K 4 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 292 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 115 22K 23K 78643K 2142 0 0 UVM aobj 48 2K 2K 78643K 50 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 61 0 0 NDP 13 0K 0K 78643K 36 0 0 temp 176 3563K 3627K 78643K 6231 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 14 0 12 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 61 0 59 1 0 1 1 0 8 0 rtentry 112 84 0 60 2 0 2 2 0 8 0 unpcb 120 614 0 604 2 1 1 2 0 8 0 syncache 264 7 0 7 2 2 0 1 0 8 0 tcpqe 32 30 0 30 2 2 0 1 0 8 0 tcpcb 544 143 0 139 2 0 2 2 0 8 1 inpcb 280 599 0 591 4 2 2 3 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 8 0 8 1 1 0 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 ppxss 1128 4 0 4 3 3 0 1 0 8 0 pffrag 232 11 0 11 1 1 0 1 0 482 0 pffrnode 88 11 0 11 1 1 0 1 0 8 0 pffrent 40 228 0 228 1 1 0 1 0 8 0 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 59 0 20 1 0 1 1 0 8 0 pfstkey 112 59 0 20 2 0 2 2 0 8 0 pfstate 328 59 0 16 4 0 4 4 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 256 347 0 218 14 4 10 14 0 8 0 art_table 32 348 0 218 2 0 2 2 0 8 0 art_node 16 81 0 57 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 129 0 119 1 0 1 1 0 8 0 shmpl 112 48 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1891 0 487 46 0 46 46 0 8 0 ffsino 272 1891 0 487 95 1 94 95 0 8 0 nchpl 144 2644 0 1037 61 0 61 61 0 8 0 uvmvnodes 72 2175 0 0 40 0 40 40 0 8 0 vnodes 208 2175 0 0 115 0 115 115 0 8 0 namei 1024 7920 0 7920 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 7537 0 7537 9 8 1 7 0 8 1 plimitpl 152 38 0 30 1 0 1 1 0 8 0 sigapl 432 541 0 525 3 1 2 3 0 8 0 futexpl 56 8942 0 8942 1 0 1 1 0 8 1 knotepl 112 149 0 128 1 0 1 1 0 8 0 kqueuepl 104 280 0 278 1 0 1 1 0 8 0 pipepl 112 476 0 457 3 1 2 2 0 8 1 fdescpl 488 542 0 525 3 0 3 3 0 8 0 filepl 152 4799 0 4698 8 2 6 7 0 8 2 lockfpl 104 85 0 84 1 0 1 1 0 8 0 lockfspl 48 31 0 30 1 0 1 1 0 8 0 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 511 0 502 1 0 1 1 0 8 0 zombiepl 144 525 0 525 1 0 1 1 0 8 1 processpl 896 558 0 525 4 0 4 4 0 8 0 procpl 632 1242 0 1200 5 0 5 5 0 8 1 srpgc 64 8 0 8 1 1 0 1 0 8 0 sosppl 128 12 0 12 2 2 0 1 0 8 0 sockpl 384 1296 0 1276 6 1 5 5 0 8 3 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 250 0 0 31 0 31 31 0 8 0 mtagpl 80 18 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 16 0 16 16 0 8 0 bufpl 256 6968 0 1321 353 0 353 353 0 8 0 anonpl 16 75432 0 60893 93 10 83 92 0 124 5 amapchunkpl 152 3196 0 3048 8 2 6 7 0 158 0 amappl16 192 2878 0 1809 67 11 56 67 0 8 1 amappl14 176 81 0 79 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 13 0 10 2 1 1 1 0 8 0 amappl11 152 132 0 115 1 0 1 1 0 8 0 amappl10 144 51 0 45 1 0 1 1 0 8 0 amappl9 136 651 0 644 1 0 1 1 0 8 0 amappl8 128 218 0 183 2 0 2 2 0 8 0 amappl7 120 82 0 73 1 0 1 1 0 8 0 amappl6 112 158 0 142 1 0 1 1 0 8 0 amappl5 104 156 0 141 1 0 1 1 0 8 0 amappl4 96 756 0 726 1 0 1 1 0 8 0 amappl3 88 198 0 193 1 0 1 1 0 8 0 amappl2 80 3257 0 3192 3 1 2 3 0 8 0 amappl1 72 22090 0 21633 25 15 10 20 0 8 0 amappl 80 1549 0 1508 2 0 2 2 0 84 1 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 49 0 2 1 0 1 1 0 8 0 uaddrrnd 24 542 0 525 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 542 0 525 1 0 1 1 0 8 0 vmmpekpl 168 8977 0 8946 2 0 2 2 0 8 0 vmmpepl 168 76747 0 74577 153 13 140 140 0 357 40 vmsppl 368 541 0 525 2 0 2 2 0 8 0 pdppl 4096 1091 0 1050 6 0 6 6 0 8 0 pvpl 32 233222 0 215473 214 8 206 214 0 265 24 pmappl 232 541 0 525 2 1 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 533 0 8 16 0 16 16 0 8 0