uvm_fault(0xfffffd805772c228, 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(0xfffffd805772c228, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6800,ffff800000b0fe00,ffff80001e84d680) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001e84d5a0, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000b0fe00,ffff80001e84d680) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e84d670,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8057c12800,80206913,ffff80001e84d670,ffff80001d6b9770) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6b9770,ffff80001e84d788,ffff80001e84d7d0) at sys_ioctl+0x4a1 syscall(ffff80001e84d850) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x296c1fc9930, count: -6 ddb> show registers rdi 0xffffffff822160fb ifa_update_broadaddr+0x1b rsi 0x3c rbp 0xffff80001e84d500 rbx 0x10 rdx 0x3d rcx 0xffff80001f9a6000 rax 0xffff80001f9a6000 r8 0xffffffff81e115c7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xf11dddf5f48197de r12 0xffff80001e84d680 r13 0 r14 0xffff80001e84d680 r15 0 rip 0xffffffff822160ff ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e84d4c0 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=354027 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6ba880,0xffffffff8280df10 process=0xffff80001d6ea030 user=0xffff80001e848000, vmspace=0xfffffd805772c228 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97505 284585 31862 0 2 0 syz-executor.0 *97505 354027 31862 0 7 0x4000000 syz-executor.0 82088 179310 63651 0 2 0 syz-executor.1 82088 148822 63651 0 3 0x4000080 bell syz-executor.1 91779 269423 0 0 3 0x14280 nfsidl nfsio 8543 165675 0 0 3 0x14280 nfsidl nfsio 72755 480119 0 0 3 0x14280 nfsidl nfsio 25872 384674 0 0 3 0x14280 nfsidl nfsio 99759 379492 0 0 3 0x14280 nfsidl nfsio 12320 362512 0 0 3 0x14280 nfsidl nfsio 49892 26474 0 0 3 0x14280 nfsidl nfsio 73232 220754 0 0 3 0x14280 nfsidl nfsio 15569 26099 0 0 3 0x14280 nfsidl nfsio 98870 285399 0 0 3 0x14280 nfsidl nfsio 27298 13304 0 0 3 0x14280 nfsidl nfsio 72876 94097 0 0 3 0x14280 nfsidl nfsio 29439 305127 0 0 3 0x14280 nfsidl nfsio 68976 359691 0 0 3 0x14280 nfsidl nfsio 89805 284809 0 0 3 0x14280 nfsidl nfsio 40438 192533 0 0 3 0x14280 nfsidl nfsio 22438 407553 0 0 3 0x14280 nfsidl nfsio 97443 25401 0 0 3 0x14280 nfsidl nfsio 62345 139370 0 0 3 0x14280 nfsidl nfsio 83031 121884 0 0 3 0x14280 nfsidl nfsio 33799 320051 0 0 3 0x14200 bored sosplice 31862 157981 79409 0 3 0x82 nanosleep syz-executor.0 63651 120669 79409 0 3 0x82 nanosleep syz-executor.1 79409 109740 39925 0 3 0x82 thrsleep syz-fuzzer 79409 497025 39925 0 3 0x4000082 thrsleep syz-fuzzer 79409 290050 39925 0 3 0x4000082 kqread syz-fuzzer 79409 457587 39925 0 3 0x4000082 thrsleep syz-fuzzer 79409 239020 39925 0 3 0x4000082 thrsleep syz-fuzzer 79409 244751 39925 0 3 0x4000082 thrsleep syz-fuzzer 79409 192982 39925 0 3 0x4000082 thrsleep syz-fuzzer 79409 289509 39925 0 3 0x4000082 thrsleep syz-fuzzer 39925 224613 1801 0 3 0x10008a pause ksh 1801 444858 74138 0 3 0x92 select sshd 93160 310305 1 0 3 0x100083 ttyin getty 74138 467505 1 0 3 0x80 select sshd 32696 180817 89118 73 3 0x100090 kqread syslogd 89118 36185 1 0 3 0x100082 netio syslogd 47789 180398 1 77 3 0x100090 poll dhclient 93832 349724 1 0 3 0x80 poll dhclient 58039 484497 0 0 3 0x14200 bored smr 54958 205819 0 0 2 0x14200 zerothread 96815 191836 0 0 3 0x14200 aiodoned aiodoned 13066 494035 0 0 3 0x14200 syncer update 82765 416151 0 0 3 0x14200 cleaner cleaner 46379 490109 0 0 3 0x14200 reaper reaper 94822 416856 0 0 3 0x14200 pgdaemon pagedaemon 32610 60519 0 0 3 0x14200 bored crynlk 18831 51678 0 0 3 0x14200 bored crypto 49317 266345 0 0 3 0x40014200 acpi0 acpi0 50219 99145 0 0 3 0x14200 bored softnet 34493 513694 0 0 3 0x14200 bored systqmp 20941 467849 0 0 3 0x14200 bored systq 47673 257614 0 0 3 0x40014200 bored softclock 63917 326464 0 0 3 0x40014200 idle0 1 366656 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 9519 6351K 6848K 78643K 11470 0 pcb 13 8K 8K 78643K 113 0 rtable 106 7K 10K 78643K 568 0 ifaddr 97 19K 19K 78643K 192 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 107 0 iov 0 0K 16K 78643K 76 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1465 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 82 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 632 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 63K 78643K 409 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 31 0 in_multi 85 3K 4K 78643K 172 0 ether_multi 1 0K 0K 78643K 13 0 mrt 0 0K 0K 78643K 2 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 226 0 pfkey data 0 0K 1K 78643K 2 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 149 89K 89K 78643K 2336 0 UVM aobj 28 6K 6K 78643K 47 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 14 0K 0K 78643K 31 0 temp 122 3858K 3927K 78643K 10339 0 kqueue 3 4K 14K 78643K 29 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 2 1 0 1 1 0 8 0 rtpcb 80 39 0 37 1 0 1 1 0 8 0 rtentry 112 86 0 51 2 0 2 2 0 8 0 unpcb 120 414 0 406 1 0 1 1 0 8 0 syncache 264 9 0 9 5 4 1 1 0 8 1 tcpqe 32 570 0 570 1 1 0 1 0 8 0 tcpcb 544 162 0 157 1 0 1 1 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 10 0 10 2 2 0 1 0 8 0 inpcb 296 1542 0 1534 4 2 2 2 0 8 1 ip6q 72 2 0 2 2 1 1 1 0 8 1 ip6af 40 4 0 4 2 1 1 1 0 8 1 nd6 48 24 0 17 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 2 1 1 0 8 1 pfrktable 1344 116 0 107 4 2 2 2 0 8 1 pftag 88 22 0 20 2 1 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 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 36 0 28 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 416 0 200 17 1 16 16 0 8 0 art_table 32 417 0 200 3 0 3 3 0 8 0 art_node 16 85 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 76 0 66 1 0 1 1 0 8 0 shmpl 112 44 0 20 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2200 0 801 88 0 88 88 0 8 0 ffsino 240 2200 0 801 83 0 83 83 0 8 0 nchpl 144 3265 0 1674 60 0 60 60 0 8 0 uvmvnodes 72 2427 0 0 45 0 45 45 0 8 0 vnodes 208 2427 0 0 128 0 128 128 0 8 0 namei 1024 8670 0 8670 4 3 1 1 0 8 1 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 528 9 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 46 0 40 1 0 1 1 0 8 0 scxspl 192 10232 0 10232 1 0 1 1 0 8 1 plimitpl 152 48 0 41 1 0 1 1 0 8 0 sigapl 424 839 0 789 6 0 6 6 0 8 0 futexpl 56 13266 0 13266 3 2 1 1 0 8 1 knotepl 112 95 0 76 1 0 1 1 0 8 0 kqueuepl 144 82 0 80 1 0 1 1 0 8 0 pipepl 272 155 0 145 1 0 1 1 0 8 0 fdescpl 432 804 0 789 2 0 2 2 0 8 0 filepl 120 5080 0 4983 4 0 4 4 0 8 1 lockfpl 104 163 0 162 1 0 1 1 0 8 0 lockfspl 48 61 0 60 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 437 0 430 1 0 1 1 0 8 0 zombiepl 144 789 0 789 2 1 1 1 0 8 1 processpl 928 839 0 789 7 0 7 7 0 8 0 procpl 624 1601 0 1542 6 0 6 6 0 8 1 sockpl 400 2001 0 1983 8 4 4 4 0 8 1 mcl64k 65536 41 0 41 4 3 1 1 0 8 1 mcl16k 16384 5 0 5 3 3 0 1 0 8 0 mcl12k 12288 27 0 27 4 3 1 1 0 8 1 mcl9k 9216 19 0 19 4 3 1 1 0 8 1 mcl8k 8192 15 0 15 4 3 1 1 0 8 1 mcl4k 4096 60 0 60 4 3 1 1 0 8 1 mcl2k2 2112 5 0 5 3 2 1 1 0 8 1 mcl2k 2048 91438 0 91369 35 25 10 20 0 8 0 mtagpl 96 87 0 11 3 1 2 2 0 8 0 mbufpl 256 148885 0 148521 30 3 27 27 0 8 3 bufpl 280 4939 0 128 344 0 344 344 0 8 0 anonpl 16 86312 0 68956 77 0 77 77 0 107 0 amapchunkpl 152 3921 0 3771 20 13 7 20 0 158 0 amappl16 192 4075 0 3026 56 2 54 54 0 8 1 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 25 0 21 1 0 1 1 0 8 0 amappl13 168 35 0 30 1 0 1 1 0 8 0 amappl12 160 11 0 9 2 1 1 1 0 8 0 amappl11 152 49 0 40 1 0 1 1 0 8 0 amappl10 144 313 0 304 1 0 1 1 0 8 0 amappl9 136 374 0 372 1 0 1 1 0 8 0 amappl8 128 343 0 297 2 0 2 2 0 8 0 amappl7 120 408 0 394 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 753 0 741 1 0 1 1 0 8 0 amappl4 96 424 0 396 1 0 1 1 0 8 0 amappl3 88 137 0 132 1 0 1 1 0 8 0 amappl2 80 5611 0 5531 2 0 2 2 0 8 0 amappl1 72 27531 0 27109 24 15 9 17 0 8 0 amappl 80 1829 0 1782 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 46 0 19 1 0 1 1 0 8 0 uaddrrnd 24 813 0 791 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 813 0 791 1 0 1 1 0 8 0 vmmpekpl 168 8556 0 8522 2 0 2 2 0 8 0 vmmpepl 168 103368 0 101077 130 27 103 113 0 357 3 vmsppl 272 812 0 791 2 0 2 2 0 8 0 pdppl 4096 1632 0 1589 6 0 6 6 0 8 0 pvpl 32 255522 0 235521 178 2 176 178 0 265 0 pmappl 200 812 0 791 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 303 0 51 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000b0fe00,ffff80001e84d680) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e84d670,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8057c12800,80206913,ffff80001e84d670,ffff80001d6b9770) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6b9770,ffff80001e84d788,ffff80001e84d7d0) at sys_ioctl+0x4a1 syscall(ffff80001e84d850) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x296c1fc9930, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6800,ffff800000b0fe00,ffff80001e84d680) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001e84d670,ffff800000ac6800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8057c12800,80206913,ffff80001e84d670,ffff80001d6b9770) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6b9770,ffff80001e84d788,ffff80001e84d7d0) at sys_ioctl+0x4a1 syscall(ffff80001e84d850) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x296c1fc9930, count: -6