uvm_fault(0xfffffd8057912670, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd8057912670, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000b15b00,ffff80001d751a50) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001d751970, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000b15b00,ffff80001d751a50) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d751a40,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805c0e67e0,80206913,ffff80001d751a40,ffff800020819af0) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff800020819af0,ffff80001d751b58,ffff80001d751ba0) at sys_ioctl+0x4a1 syscall(ffff80001d751c20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xad2aff3140, count: -6 ddb> show registers rdi 0xffffffff81deb2cb ifa_update_broadaddr+0x1b rsi 0x3b rbp 0xffff80001d7518d0 rbx 0x10 rdx 0x3c rcx 0xffff80001dba4000 rax 0xffff80001dba4000 r8 0xffffffff815d91f7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xc9a4bc554c944d51 r12 0xffff80001d751a50 r13 0 r14 0xffff80001d751a50 r15 0 rip 0xffffffff81deb2cf ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d751890 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=402065 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020818c50,0xffffffff82837f10 process=0xffff800020832b10 user=0xffff80001d74c000, vmspace=0xfffffd8057912670 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 63546 59269 41984 0 2 0 syz-executor.0 *63546 402065 41984 0 7 0x4000000 syz-executor.0 86487 370427 1 0 3 0x80 nanosleep syz-executor.1 86487 93211 1 0 3 0x4000080 netio syz-executor.1 86487 434989 1 0 3 0x4000080 fsleep syz-executor.1 30043 303296 0 0 3 0x14200 acct acct 1945 522367 0 0 3 0x14280 nfsidl nfsio 95487 225440 0 0 3 0x14280 nfsidl nfsio 44864 476562 0 0 3 0x14280 nfsidl nfsio 95853 56175 0 0 3 0x14280 nfsidl nfsio 25827 500065 0 0 3 0x14280 nfsidl nfsio 45539 115058 0 0 3 0x14280 nfsidl nfsio 89979 435903 0 0 3 0x14280 nfsidl nfsio 47437 412536 0 0 3 0x14280 nfsidl nfsio 93433 30887 0 0 3 0x14280 nfsidl nfsio 30598 344796 0 0 3 0x14280 nfsidl nfsio 75916 9227 0 0 3 0x14280 nfsidl nfsio 12399 56193 0 0 3 0x14280 nfsidl nfsio 58107 208549 0 0 3 0x14280 nfsidl nfsio 70530 50180 0 0 3 0x14280 nfsidl nfsio 42206 75170 0 0 3 0x14280 nfsidl nfsio 25794 130508 0 0 3 0x14280 nfsidl nfsio 83950 90636 0 0 3 0x14280 nfsidl nfsio 58359 112545 0 0 3 0x14280 nfsidl nfsio 45808 371559 0 0 3 0x14280 nfsidl nfsio 7904 487539 0 0 3 0x14280 nfsidl nfsio 76793 357770 0 0 3 0x14200 bored sosplice 41984 236850 78040 0 3 0x82 nanosleep syz-executor.0 78040 350937 50363 0 3 0x82 thrsleep syz-fuzzer 78040 174591 50363 0 3 0x4000082 nanosleep syz-fuzzer 78040 294947 50363 0 3 0x4000082 thrsleep syz-fuzzer 78040 329554 50363 0 3 0x4000082 thrsleep syz-fuzzer 78040 5892 50363 0 3 0x4000082 thrsleep syz-fuzzer 78040 79851 50363 0 3 0x4000082 kqread syz-fuzzer 78040 184498 50363 0 3 0x4000082 thrsleep syz-fuzzer 78040 193857 50363 0 3 0x4000082 thrsleep syz-fuzzer 50363 310907 46440 0 3 0x10008a pause ksh 46440 451791 97991 0 3 0x92 select sshd 56810 381731 1 0 3 0x100083 ttyin getty 97991 437002 1 0 3 0x80 select sshd 21034 235856 10115 73 3 0x100090 kqread syslogd 10115 352060 1 0 3 0x100082 netio syslogd 1412 292356 1 77 3 0x100090 poll dhclient 17647 437113 1 0 3 0x80 poll dhclient 7748 116247 0 0 3 0x14200 bored smr 17574 341720 0 0 2 0x14200 zerothread 76285 93437 0 0 3 0x14200 aiodoned aiodoned 89063 111537 0 0 3 0x14200 syncer update 12724 217069 0 0 3 0x14200 cleaner cleaner 53285 331213 0 0 3 0x14200 reaper reaper 22362 159519 0 0 3 0x14200 pgdaemon pagedaemon 3924 297835 0 0 3 0x14200 bored crynlk 51093 305162 0 0 3 0x14200 bored crypto 40840 464387 0 0 3 0x40014200 acpi0 acpi0 76292 368207 0 0 3 0x14200 bored softnet 60145 381254 0 0 3 0x14200 bored systqmp 736 279305 0 0 3 0x14200 bored systq 28896 80773 0 0 3 0x40014200 bored softclock 77694 14146 0 0 3 0x40014200 idle0 1 426996 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 9510 6362K 6848K 78643K 11399 0 pcb 13 8K 8K 78643K 101 0 rtable 119 10K 12K 78643K 596 0 ifaddr 87 17K 17K 78643K 178 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 135 0 iov 0 0K 24K 78643K 87 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1485 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 105 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 698 0 sigio 0 0K 0K 78643K 10 0 proc 50 38K 55K 78643K 434 0 subproc 32 2K 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 65 0 in_multi 53 2K 2K 78643K 152 0 ether_multi 1 0K 0K 78643K 17 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 218 0 pfkey data 0 0K 2K 78643K 8 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 144 72K 72K 78643K 2467 0 UVM aobj 19 2K 4K 78643K 32 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 61 0 NDP 13 0K 0K 78643K 33 0 temp 142 3878K 3950K 78643K 13710 0 kqueue 3 4K 18K 78643K 40 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 9 0 7 1 0 1 1 0 8 0 rtpcb 80 36 0 33 1 0 1 1 0 8 0 rtentry 112 82 0 48 2 1 1 2 0 8 0 unpcb 120 489 0 478 1 0 1 1 0 8 0 syncache 264 14 0 14 5 4 1 1 0 8 1 tcpqe 32 118 0 118 1 1 0 1 0 8 0 tcpcb 544 200 0 195 1 0 1 1 0 8 0 ipq 40 39 0 39 2 2 0 1 0 8 0 ipqe 40 201 0 201 2 2 0 1 0 8 0 inpcb 296 1286 0 1277 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 22 0 17 1 0 1 1 0 8 0 pkpcb 40 782 0 780 3 2 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 118 0 104 3 1 2 2 0 8 0 pftag 88 17 0 12 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 46 0 32 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 398 0 175 18 4 14 15 0 8 0 art_table 32 399 0 175 2 0 2 2 0 8 0 art_node 16 81 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 101 0 91 1 0 1 1 0 8 0 shmpl 112 29 0 13 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2285 0 889 88 0 88 88 0 8 0 ffsino 240 2285 0 889 83 0 83 83 0 8 0 nchpl 144 3368 0 1778 60 0 60 60 0 8 0 uvmvnodes 72 2515 0 0 46 0 46 46 0 8 0 vnodes 208 2515 0 0 133 0 133 133 0 8 0 namei 1024 9116 0 9116 3 2 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 13 0 7 2 1 1 1 0 8 0 pfiaddrpl 120 46 0 36 1 0 1 1 0 8 0 scxspl 192 11042 0 11042 2 1 1 1 0 8 1 plimitpl 152 56 0 49 1 0 1 1 0 8 0 sigapl 424 903 0 853 6 0 6 6 0 8 0 futexpl 56 14295 0 14294 3 2 1 1 0 8 0 knotepl 112 111 0 92 1 0 1 1 0 8 0 kqueuepl 144 83 0 81 1 0 1 1 0 8 0 pipepl 272 144 0 134 1 0 1 1 0 8 0 fdescpl 432 867 0 853 2 0 2 2 0 8 0 filepl 120 5813 0 5714 5 1 4 4 0 8 1 lockfpl 104 107 0 106 1 0 1 1 0 8 0 lockfspl 48 42 0 41 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 485 0 478 1 0 1 1 0 8 0 zombiepl 144 853 0 852 2 1 1 1 0 8 0 processpl 928 903 0 852 7 0 7 7 0 8 0 procpl 624 1680 0 1619 5 0 5 5 0 8 0 sosppl 128 4 0 4 2 1 1 1 0 8 1 sockpl 400 2604 0 2578 6 2 4 4 0 8 1 mcl64k 65536 559 0 559 67 2 65 65 0 8 65 mcl16k 16384 2 0 2 2 2 0 1 0 8 0 mcl12k 12288 14 0 14 4 3 1 1 0 8 1 mcl9k 9216 15 0 15 2 1 1 1 0 8 1 mcl8k 8192 20 0 20 3 2 1 1 0 8 1 mcl4k 4096 60 0 60 4 3 1 1 0 8 1 mcl2k2 2112 4 0 4 3 3 0 1 0 8 0 mcl2k 2048 92932 0 92883 19 11 8 15 0 8 1 mtagpl 96 87 0 49 2 1 1 1 0 8 0 mbufpl 256 155407 0 155251 154 133 21 115 0 8 9 bufpl 280 5136 0 132 358 0 358 358 0 8 0 anonpl 16 99737 0 82406 90 3 87 87 0 107 13 amapchunkpl 152 4001 0 3835 23 15 8 20 0 158 0 amappl16 192 4414 0 3416 63 5 58 63 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 26 0 22 1 0 1 1 0 8 0 amappl13 168 111 0 108 1 0 1 1 0 8 0 amappl12 160 95 0 95 2 1 1 1 0 8 1 amappl11 152 292 0 281 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 362 0 361 1 0 1 1 0 8 0 amappl8 128 367 0 321 2 0 2 2 0 8 0 amappl7 120 120 0 106 1 0 1 1 0 8 0 amappl6 112 269 0 261 1 0 1 1 0 8 0 amappl5 104 747 0 735 1 0 1 1 0 8 0 amappl4 96 520 0 488 1 0 1 1 0 8 0 amappl3 88 207 0 202 1 0 1 1 0 8 0 amappl2 80 6055 0 5985 2 0 2 2 0 8 0 amappl1 72 28968 0 28515 23 13 10 17 0 8 0 amappl 80 1936 0 1886 3 1 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 31 0 13 1 0 1 1 0 8 0 uaddrrnd 24 880 0 860 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 880 0 860 1 0 1 1 0 8 0 vmmpekpl 168 8675 0 8639 2 0 2 2 0 8 0 vmmpepl 168 112857 0 110669 185 65 120 152 0 357 24 vmsppl 272 879 0 860 3 1 2 2 0 8 0 pdppl 4096 1766 0 1726 7 1 6 6 0 8 0 pvpl 32 283298 0 263102 206 5 201 201 0 265 29 pmappl 200 879 0 860 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 472 0 165 13 3 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000b15b00,ffff80001d751a50) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d751a40,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805c0e67e0,80206913,ffff80001d751a40,ffff800020819af0) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff800020819af0,ffff80001d751b58,ffff80001d751ba0) at sys_ioctl+0x4a1 syscall(ffff80001d751c20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xad2aff3140, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000b15b00,ffff80001d751a50) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d751a40,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805c0e67e0,80206913,ffff80001d751a40,ffff800020819af0) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff800020819af0,ffff80001d751b58,ffff80001d751ba0) at sys_ioctl+0x4a1 syscall(ffff80001d751c20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xad2aff3140, count: -6