uvm_fault(0xfffffd8057867dd8, 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(0xfffffd8057867dd8, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8b00,ffff80001e7a9200) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7a9120, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8b00,ffff80001e7a9200) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7a91f0,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806115fc80,80206913,ffff80001e7a91f0,ffff80001e819d60) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001e819d60,ffff80001e7a9308,ffff80001e7a9350) at sys_ioctl+0x4a1 syscall(ffff80001e7a93d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x303cfbea7d0, count: -6 ddb> show registers rdi 0xffffffff81d9ecbb ifa_update_broadaddr+0x1b rsi 0x32 rbp 0xffff80001e7a9080 rbx 0x10 rdx 0x33 rcx 0xffff80001d7a4000 rax 0xffff80001d7a4000 r8 0xffffffff82335957 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xc1ed9d51b0d736cf r12 0xffff80001e7a9200 r13 0xffff80001e7a91f0 r14 0xffff80001e7a9200 r15 0 rip 0xffffffff81d9ecbf ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7a9040 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=148977 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff80001e8193a0,0xffffffff827fb190 process=0xffff80001e838770 user=0xffff80001e7a4000, vmspace=0xfffffd8057867dd8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 79441 180498 69115 0 2 0 syz-executor.1 *79441 148977 69115 0 7 0x4000000 syz-executor.1 52263 517809 0 0 3 0x14280 nfsidl nfsio 21015 344056 0 0 3 0x14280 nfsidl nfsio 32979 449458 0 0 3 0x14280 nfsidl nfsio 31182 196518 0 0 3 0x14280 nfsidl nfsio 64870 221966 0 0 3 0x14280 nfsidl nfsio 63934 142091 0 0 3 0x14280 nfsidl nfsio 61454 151417 0 0 3 0x14280 nfsidl nfsio 50549 405163 0 0 3 0x14280 nfsidl nfsio 56941 487786 0 0 3 0x14280 nfsidl nfsio 62008 329746 0 0 3 0x14280 nfsidl nfsio 62597 509339 0 0 3 0x14280 nfsidl nfsio 15645 88381 0 0 3 0x14280 nfsidl nfsio 96009 240950 0 0 3 0x14280 nfsidl nfsio 1172 215693 0 0 3 0x14280 nfsidl nfsio 75040 335587 0 0 3 0x14280 nfsidl nfsio 23775 113840 0 0 3 0x14280 nfsidl nfsio 13328 56367 0 0 3 0x14280 nfsidl nfsio 89565 145060 0 0 3 0x14280 nfsidl nfsio 58452 440672 0 0 3 0x14280 nfsidl nfsio 23857 228207 0 0 3 0x14280 nfsidl nfsio 28254 522135 0 0 3 0x14200 bored sosplice 91985 244391 60952 0 2 0x2 syz-executor.0 69115 449232 60952 0 3 0x82 nanosleep syz-executor.1 60952 394497 11418 0 3 0x82 thrsleep syz-fuzzer 60952 195837 11418 0 3 0x4000082 nanosleep syz-fuzzer 60952 405381 11418 0 3 0x4000082 thrsleep syz-fuzzer 60952 464094 11418 0 3 0x4000082 thrsleep syz-fuzzer 60952 110469 11418 0 3 0x4000082 thrsleep syz-fuzzer 60952 114125 11418 0 3 0x4000082 kqread syz-fuzzer 60952 271711 11418 0 3 0x4000082 thrsleep syz-fuzzer 60952 81050 11418 0 3 0x4000082 thrsleep syz-fuzzer 11418 194490 27870 0 3 0x10008a pause ksh 27870 300441 6903 0 3 0x92 select sshd 37148 291027 1 0 3 0x100083 ttyin getty 6903 371990 1 0 3 0x80 select sshd 3485 425274 70656 73 3 0x100090 kqread syslogd 70656 72302 1 0 3 0x100082 netio syslogd 91910 151647 1 77 3 0x100090 poll dhclient 66827 412130 1 0 3 0x80 poll dhclient 39543 384422 0 0 3 0x14200 bored smr 73835 166468 0 0 2 0x14200 zerothread 56400 92890 0 0 3 0x14200 aiodoned aiodoned 66389 4259 0 0 3 0x14200 syncer update 91481 234685 0 0 3 0x14200 cleaner cleaner 1667 203846 0 0 3 0x14200 reaper reaper 69 219683 0 0 3 0x14200 pgdaemon pagedaemon 34895 318172 0 0 3 0x14200 bored crynlk 71070 505797 0 0 3 0x14200 bored crypto 84490 341379 0 0 3 0x40014200 acpi0 acpi0 1451 109983 0 0 3 0x14200 bored softnet 41755 502435 0 0 3 0x14200 bored systqmp 1933 8326 0 0 3 0x14200 bored systq 5509 209245 0 0 3 0x40014200 bored softclock 65835 418279 0 0 3 0x40014200 idle0 1 9034 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 9487 6337K 6651K 78643K 11122 0 pcb 13 8K 8K 78643K 93 0 rtable 99 8K 10K 78643K 530 0 ifaddr 80 17K 18K 78643K 156 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 127 0 iov 0 0K 12K 78643K 49 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1385 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 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 96 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 522 0 sigio 0 0K 0K 78643K 16 0 proc 53 39K 63K 78643K 404 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 91 0 in_multi 72 3K 3K 78643K 158 0 ether_multi 1 0K 0K 78643K 16 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 218 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 139 56K 56K 78643K 2048 0 UVM aobj 16 2K 2K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 74 0 NDP 10 0K 0K 78643K 25 0 temp 101 3854K 3927K 78643K 12564 0 kqueue 3 4K 8K 78643K 16 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 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 78 0 51 2 0 2 2 0 8 0 unpcb 120 1167 0 1159 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 87 0 87 2 2 0 1 0 8 0 tcpcb 544 329 0 324 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 296 699 0 691 4 2 2 3 0 8 1 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 15 0 13 1 0 1 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 108 0 97 3 1 2 2 0 8 1 pftag 88 25 0 22 1 0 1 1 0 8 0 pfstkey 112 2 0 2 1 1 0 1 0 8 0 pfstate 328 1 0 1 1 1 0 1 0 8 0 pfrule 1360 37 0 12 3 0 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 486 0 307 17 4 13 15 0 8 0 art_table 32 487 0 307 2 0 2 2 0 8 0 art_node 16 77 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 16 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 90 0 80 1 0 1 1 0 8 0 shmpl 112 16 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2039 0 642 88 0 88 88 0 8 0 ffsino 240 2039 0 642 83 0 83 83 0 8 0 nchpl 144 3203 0 1601 60 0 60 60 0 8 0 uvmvnodes 72 2200 0 0 40 0 40 40 0 8 0 vnodes 208 2200 0 0 116 0 116 116 0 8 0 namei 1024 8219 0 8219 2 1 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 10 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 36 0 28 1 0 1 1 0 8 0 scxspl 192 9593 0 9593 2 1 1 1 0 8 1 plimitpl 152 60 0 53 1 0 1 1 0 8 0 sigapl 424 729 0 680 6 0 6 6 0 8 0 futexpl 56 10732 0 10732 2 1 1 1 0 8 1 knotepl 112 79 0 60 1 0 1 1 0 8 0 kqueuepl 144 69 0 67 1 0 1 1 0 8 0 pipepl 272 122 0 112 1 0 1 1 0 8 0 fdescpl 432 694 0 680 2 0 2 2 0 8 0 filepl 120 4978 0 4882 4 0 4 4 0 8 1 lockfpl 104 66 0 65 1 0 1 1 0 8 0 lockfspl 48 29 0 28 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 376 0 369 1 0 1 1 0 8 0 zombiepl 144 680 0 680 1 0 1 1 0 8 1 processpl 928 729 0 680 7 0 7 7 0 8 0 procpl 624 1310 0 1253 5 0 5 5 0 8 0 sosppl 128 8 0 8 3 2 1 1 0 8 1 sockpl 400 1897 0 1879 5 1 4 4 0 8 2 mcl64k 65536 20 0 20 1 1 0 1 0 8 0 mcl16k 16384 4 0 4 2 1 1 1 0 8 1 mcl12k 12288 12 0 12 3 2 1 1 0 8 1 mcl9k 9216 5 0 5 2 2 0 1 0 8 0 mcl8k 8192 19 0 19 2 1 1 1 0 8 1 mcl4k 4096 39 0 39 3 2 1 1 0 8 1 mcl2k2 2112 12 0 12 2 1 1 1 0 8 1 mcl2k 2048 77562 0 77490 21 11 10 17 0 8 0 mtagpl 96 67 0 35 3 1 2 2 0 8 0 mbufpl 256 126476 0 126279 26 3 23 23 0 8 0 bufpl 280 4597 0 128 320 0 320 320 0 8 0 anonpl 16 83637 0 67533 93 11 82 82 0 107 12 amapchunkpl 152 3279 0 3138 20 13 7 19 0 158 0 amappl16 192 3919 0 2962 71 13 58 59 0 8 8 amappl15 184 259 0 256 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 23 0 21 1 0 1 1 0 8 0 amappl11 152 276 0 266 1 0 1 1 0 8 0 amappl10 144 12 0 8 1 0 1 1 0 8 0 amappl9 136 373 0 372 1 0 1 1 0 8 0 amappl8 128 355 0 306 2 0 2 2 0 8 0 amappl7 120 104 0 93 1 0 1 1 0 8 0 amappl6 112 251 0 247 1 0 1 1 0 8 0 amappl5 104 631 0 620 1 0 1 1 0 8 0 amappl4 96 431 0 401 1 0 1 1 0 8 0 amappl3 88 121 0 116 1 0 1 1 0 8 0 amappl2 80 4985 0 4922 2 0 2 2 0 8 0 amappl1 72 21118 0 20698 23 13 10 17 0 8 0 amappl 80 1540 0 1497 2 1 1 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 18 0 3 1 0 1 1 0 8 0 uaddrrnd 24 704 0 684 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 704 0 684 1 0 1 1 0 8 0 vmmpekpl 168 7814 0 7778 2 0 2 2 0 8 0 vmmpepl 168 88572 0 86461 132 26 106 111 0 357 11 vmsppl 272 703 0 684 2 0 2 2 0 8 0 pdppl 4096 1414 0 1374 8 2 6 6 0 8 0 pvpl 32 241124 0 222433 203 14 189 202 0 265 30 pmappl 200 703 0 684 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 276 0 29 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8b00,ffff80001e7a9200) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7a91f0,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806115fc80,80206913,ffff80001e7a91f0,ffff80001e819d60) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001e819d60,ffff80001e7a9308,ffff80001e7a9350) at sys_ioctl+0x4a1 syscall(ffff80001e7a93d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x303cfbea7d0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad8b00,ffff80001e7a9200) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7a91f0,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806115fc80,80206913,ffff80001e7a91f0,ffff80001e819d60) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001e819d60,ffff80001e7a9308,ffff80001e7a9350) at sys_ioctl+0x4a1 syscall(ffff80001e7a93d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x303cfbea7d0, count: -6