uvm_fault(0xfffffd806bc0a330, 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(0xfffffd806bc0a330, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6c00,ffff80001e7b1710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e7b1630, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6c00,ffff80001e7b1710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7b1700,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da71af8,80206913,ffff80001e7b1700,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001e7b1818,ffff80001e7b1860) at sys_ioctl+0x4a1 syscall(ffff80001e7b18e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd0cd3db5f70, count: -6 ddb> show registers rdi 0xffffffff8110e67b ifa_update_broadaddr+0x1b rsi 0x3e rbp 0xffff80001e7b1590 rbx 0x10 rdx 0x3f rcx 0xffff80001f988000 rax 0xffff80001f988000 r8 0xffffffff81d3dcb7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x51507a446e4f7237 r12 0xffff80001e7b1710 r13 0xaa0114ac r14 0xffff80001e7b1710 r15 0 rip 0xffffffff8110e67f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b1550 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=336652 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c3128,0xffffffff82826758 process=0xffff80001d707978 user=0xffff80001e7ac000, vmspace=0xfffffd806bc0a330 estcpu=30, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58511 284013 70602 0 2 0 syz-executor.1 *58511 336652 70602 0 7 0x4000000 syz-executor.1 47390 476042 0 0 3 0x14200 acct acct 80979 188047 0 0 3 0x14200 bored sosplice 70602 305066 432 0 3 0x82 nanosleep syz-executor.1 65865 1128 432 0 3 0x82 piperd syz-executor.0 432 120961 45336 0 3 0x82 thrsleep syz-fuzzer 432 76874 45336 0 3 0x4000082 nanosleep syz-fuzzer 432 244410 45336 0 3 0x4000082 thrsleep syz-fuzzer 432 344489 45336 0 3 0x4000082 thrsleep syz-fuzzer 432 220396 45336 0 3 0x4000082 thrsleep syz-fuzzer 432 118232 45336 0 2 0x4000002 syz-fuzzer 432 301801 45336 0 3 0x4000082 thrsleep syz-fuzzer 432 278114 45336 0 3 0x4000082 thrsleep syz-fuzzer 432 462403 45336 0 3 0x4000082 thrsleep syz-fuzzer 45336 100488 59400 0 3 0x10008a pause ksh 59400 436054 67680 0 3 0x92 select sshd 49551 343353 1 0 3 0x100083 ttyin getty 67680 388304 1 0 3 0x80 select sshd 61588 162624 57585 73 3 0x100090 kqread syslogd 57585 513686 1 0 3 0x100082 netio syslogd 53955 517506 1 77 3 0x100090 poll dhclient 7732 81899 1 0 3 0x80 poll dhclient 26312 241623 0 0 3 0x14200 bored smr 15476 78737 0 0 2 0x14200 zerothread 34692 144266 0 0 3 0x14200 aiodoned aiodoned 45195 280575 0 0 3 0x14200 syncer update 72515 77673 0 0 3 0x14200 cleaner cleaner 2970 9117 0 0 3 0x14200 reaper reaper 48203 64518 0 0 3 0x14200 pgdaemon pagedaemon 65813 249945 0 0 3 0x14200 bored crynlk 11028 16968 0 0 3 0x14200 bored crypto 5805 381716 0 0 3 0x40014200 acpi0 acpi0 38483 333887 0 0 3 0x14200 bored softnet 15880 305822 0 0 3 0x14200 bored systqmp 20955 422363 0 0 3 0x14200 bored systq 82494 381528 0 0 3 0x40014200 bored softclock 10762 349596 0 0 3 0x40014200 idle0 1 261770 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 9482 6343K 6721K 78643K 11041 0 pcb 13 8K 8K 78643K 67 0 rtable 106 3K 7K 78643K 421 0 ifaddr 65 14K 15K 78643K 126 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 33 0 iov 0 0K 12K 78643K 22 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1359 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 0K 78643K 70 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 284 0 sigio 0 0K 0K 78643K 4 0 proc 51 38K 54K 78643K 381 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 19 0 in_multi 59 3K 3K 78643K 99 0 ether_multi 1 0K 0K 78643K 7 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 195 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 130 39K 39K 78643K 1496 0 UVM aobj 9 2K 2K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 9 0K 0K 78643K 19 0 temp 94 3851K 3915K 78643K 2732 0 kqueue 3 4K 12K 78643K 18 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 7 0 1 1 0 1 1 0 8 0 rtpcb 80 21 0 19 1 0 1 1 0 8 0 rtentry 112 58 0 14 2 0 2 2 0 8 0 unpcb 120 75 0 67 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 49 0 49 2 2 0 1 0 8 0 tcpcb 544 76 0 70 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 296 424 0 415 4 2 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 12 0 6 1 0 1 1 0 8 0 pfrktable 1344 52 0 52 3 2 1 1 0 8 1 pftag 88 10 0 10 3 2 1 1 0 8 1 pfrule 1360 8 0 8 4 3 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 195 0 2 13 0 13 13 0 8 0 art_table 32 197 0 2 2 0 2 2 0 8 0 art_node 16 57 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 112 68 0 58 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1745 0 348 88 0 88 88 0 8 0 ffsino 240 1745 0 348 83 0 83 83 0 8 0 nchpl 144 2295 0 691 60 0 60 60 0 8 0 uvmvnodes 72 1892 0 0 35 0 35 35 0 8 0 vnodes 208 1892 0 0 100 0 100 100 0 8 0 namei 1024 6045 0 6045 1 0 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 2 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 14 3 2 1 1 0 8 1 scxspl 192 6696 0 6696 1 0 1 1 0 8 1 plimitpl 152 42 0 35 1 0 1 1 0 8 0 sigapl 424 472 0 442 4 0 4 4 0 8 0 futexpl 56 5371 0 5371 1 0 1 1 0 8 1 knotepl 112 83 0 64 1 0 1 1 0 8 0 kqueuepl 144 112 0 110 1 0 1 1 0 8 0 pipepl 272 88 0 78 1 0 1 1 0 8 0 fdescpl 432 456 0 442 2 0 2 2 0 8 0 filepl 120 2493 0 2397 4 0 4 4 0 8 1 lockfpl 104 62 0 61 1 0 1 1 0 8 0 lockfspl 48 25 0 24 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 278 0 271 1 0 1 1 0 8 0 zombiepl 144 442 0 442 1 0 1 1 0 8 1 processpl 928 472 0 442 4 0 4 4 0 8 0 procpl 624 772 0 733 4 0 4 4 0 8 0 sosppl 128 3 0 3 1 1 0 1 0 8 0 sockpl 400 526 0 507 4 1 3 4 0 8 1 mcl64k 65536 236 0 236 29 29 0 29 0 8 0 mcl12k 12288 8 0 8 3 3 0 1 0 8 0 mcl9k 9216 4 0 4 2 2 0 1 0 8 0 mcl8k 8192 11 0 11 3 2 1 1 0 8 1 mcl4k 4096 23 0 23 4 4 0 1 0 8 0 mcl2k 2048 93640 0 93589 17 10 7 15 0 8 0 mtagpl 96 60 0 4 3 1 2 2 0 8 0 mbufpl 256 149954 0 149718 32 14 18 28 0 8 1 bufpl 280 3566 0 130 246 0 246 246 0 8 0 anonpl 16 59732 0 42676 76 7 69 75 0 107 0 amapchunkpl 152 2718 0 2573 20 13 7 20 0 158 0 amappl16 192 2156 0 1217 53 5 48 52 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 115 0 109 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 20 0 17 1 0 1 1 0 8 0 amappl11 152 300 0 287 1 0 1 1 0 8 0 amappl10 144 18 0 13 1 0 1 1 0 8 0 amappl9 136 376 0 375 1 0 1 1 0 8 0 amappl8 128 333 0 289 2 0 2 2 0 8 0 amappl7 120 104 0 93 1 0 1 1 0 8 0 amappl6 112 275 0 266 1 0 1 1 0 8 0 amappl5 104 297 0 286 1 0 1 1 0 8 0 amappl4 96 512 0 481 1 0 1 1 0 8 0 amappl3 88 114 0 109 1 0 1 1 0 8 0 amappl2 80 2766 0 2701 2 0 2 2 0 8 0 amappl1 72 18778 0 18365 24 15 9 17 0 8 0 amappl 80 1019 0 977 1 0 1 1 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 9 0 1 1 0 1 1 0 8 0 uaddrrnd 24 458 0 443 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 458 0 443 1 0 1 1 0 8 0 vmmpekpl 168 6656 0 6626 2 0 2 2 0 8 0 vmmpepl 168 62286 0 60242 129 38 91 122 0 357 0 vmsppl 272 457 0 443 3 2 1 2 0 8 0 pdppl 4096 922 0 887 6 1 5 6 0 8 0 pvpl 32 184414 0 164367 186 24 162 180 0 265 0 pmappl 200 457 0 443 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 300 0 68 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6c00,ffff80001e7b1710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7b1700,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da71af8,80206913,ffff80001e7b1700,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001e7b1818,ffff80001e7b1860) at sys_ioctl+0x4a1 syscall(ffff80001e7b18e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd0cd3db5f70, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6c00,ffff80001e7b1710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e7b1700,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da71af8,80206913,ffff80001e7b1700,ffff80001d6c2c48) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6c2c48,ffff80001e7b1818,ffff80001e7b1860) at sys_ioctl+0x4a1 syscall(ffff80001e7b18e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd0cd3db5f70, count: -6