uvm_fault(0xfffffd8059450bc0, 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(0xfffffd8059450bc0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac4800,ffff800000b28400,ffff80001d77d3e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff80001d77d300, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac4800,ffff800000b28400,ffff80001d77d3e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d77d3d0,ffff800000ac4800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80613ba4d0,80206913,ffff80001d77d3d0,ffff80001e7af138) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001e7af138,ffff80001d77d4e8,ffff80001d77d530) at sys_ioctl+0x4a1 syscall(ffff80001d77d5b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x492edd4b830, count: -6 ddb> show registers rdi 0xffffffff814c175b ifa_update_broadaddr+0x1b rsi 0x39 rbp 0xffff80001d77d260 rbx 0x10 rdx 0x3a rcx 0xffff80001d7a4000 rax 0xffff80001d7a4000 r8 0xffffffff817e8fb7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xa62a302127efd504 r12 0xffff80001d77d3e0 r13 0 r14 0xffff80001d77d3e0 r15 0 rip 0xffffffff814c175f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d77d220 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=228557 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff80001e7aec58,0xffffffff827e55d8 process=0xffff80001e7c2eb0 user=0xffff80001d778000, vmspace=0xfffffd8059450bc0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 42729 317648 16976 0 2 0 syz-executor.1 *42729 228557 16976 0 7 0x4000000 syz-executor.1 85509 159614 0 0 3 0x14200 acct acct 96528 454694 0 0 3 0x14280 nfsidl nfsio 70514 216147 0 0 3 0x14280 nfsidl nfsio 7063 234252 0 0 3 0x14280 nfsidl nfsio 13837 303245 0 0 3 0x14280 nfsidl nfsio 33677 180178 0 0 3 0x14280 nfsidl nfsio 45260 341941 0 0 3 0x14280 nfsidl nfsio 42230 331339 0 0 3 0x14280 nfsidl nfsio 29726 236457 0 0 3 0x14280 nfsidl nfsio 73635 475032 0 0 3 0x14280 nfsidl nfsio 24954 54958 0 0 3 0x14280 nfsidl nfsio 7086 341934 0 0 3 0x14280 nfsidl nfsio 82592 392296 0 0 3 0x14280 nfsidl nfsio 72666 92928 0 0 3 0x14280 nfsidl nfsio 18407 37000 0 0 3 0x14280 nfsidl nfsio 48190 296218 0 0 3 0x14280 nfsidl nfsio 85070 54654 0 0 3 0x14280 nfsidl nfsio 55221 456395 0 0 3 0x14280 nfsidl nfsio 11514 23727 0 0 3 0x14280 nfsidl nfsio 65605 114606 0 0 3 0x14280 nfsidl nfsio 23738 21700 0 0 3 0x14280 nfsidl nfsio 87896 470234 0 0 3 0x14200 bored sosplice 16976 80387 78148 0 3 0x82 nanosleep syz-executor.1 78148 91011 82649 0 3 0x82 kqread syz-fuzzer 78148 250902 82649 0 3 0x4000082 thrsleep syz-fuzzer 78148 347061 82649 0 3 0x4000082 thrsleep syz-fuzzer 78148 27688 82649 0 3 0x4000082 thrsleep syz-fuzzer 78148 146069 82649 0 3 0x4000082 thrsleep syz-fuzzer 78148 364219 82649 0 3 0x4000082 thrsleep syz-fuzzer 78148 218794 82649 0 3 0x4000082 thrsleep syz-fuzzer 78148 52846 82649 0 3 0x4000082 thrsleep syz-fuzzer 82649 44369 23245 0 3 0x10008a pause ksh 23245 32045 74636 0 3 0x92 select sshd 11333 1821 1 0 3 0x100083 ttyin getty 74636 91749 1 0 3 0x80 select sshd 26884 167965 9686 73 3 0x100090 kqread syslogd 9686 308532 1 0 3 0x100082 netio syslogd 23352 441712 1 77 3 0x100090 poll dhclient 70224 91912 1 0 3 0x80 poll dhclient 28152 71823 0 0 3 0x14200 bored smr 1410 101564 0 0 2 0x14200 zerothread 31924 130863 0 0 3 0x14200 aiodoned aiodoned 38437 349327 0 0 3 0x14200 syncer update 4298 384934 0 0 3 0x14200 cleaner cleaner 3135 359748 0 0 3 0x14200 reaper reaper 89529 32715 0 0 3 0x14200 pgdaemon pagedaemon 17591 342378 0 0 3 0x14200 bored crynlk 43268 5402 0 0 3 0x14200 bored crypto 54582 76748 0 0 3 0x40014200 acpi0 acpi0 61671 228820 0 0 3 0x14200 bored softnet 72110 295493 0 0 3 0x14200 bored systqmp 30147 256647 0 0 3 0x14200 bored systq 97892 204791 0 0 3 0x40014200 bored softclock 28269 67909 0 0 3 0x40014200 idle0 1 157052 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 9485 6338K 7242K 78643K 11505 0 pcb 13 8K 8K 78643K 99 0 rtable 99 7K 9K 78643K 577 0 ifaddr 65 13K 15K 78643K 204 0 counters 20 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 81 0 iov 0 0K 16K 78643K 50 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 78K 78643K 1457 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 74 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 334 0 sigio 0 0K 0K 78643K 10 0 proc 50 38K 63K 78643K 401 0 subproc 16 1K 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 46 0 in_multi 49 2K 3K 78643K 154 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 220 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 124 47K 71K 78643K 1629 0 UVM aobj 19 4K 4K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 59 0 NDP 10 0K 0K 78643K 29 0 temp 92 3864K 3929K 78643K 12487 0 kqueue 3 4K 12K 78643K 15 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 4 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 73 0 44 2 0 2 2 0 8 0 unpcb 120 172 0 164 1 0 1 1 0 8 0 syncache 264 9 0 9 4 4 0 1 0 8 0 tcpqe 32 283 0 283 2 2 0 1 0 8 0 tcpcb 544 125 0 119 1 0 1 1 0 8 0 inpcb 296 378 0 369 3 1 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 18 0 16 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pfrktable 1344 127 0 121 3 2 1 1 0 8 0 pftag 88 24 0 22 3 2 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 4 0 2 1 0 1 1 0 8 0 pfstate 328 2 0 1 1 0 1 1 0 8 0 pfrule 1360 36 0 30 3 2 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 594 0 419 17 3 14 15 0 8 0 art_table 32 596 0 419 2 0 2 2 0 8 0 art_node 16 72 0 45 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 11 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 68 0 58 1 0 1 1 0 8 0 shmpl 112 19 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1830 0 432 88 0 88 88 0 8 0 ffsino 240 1830 0 432 83 0 83 83 0 8 0 nchpl 144 2493 0 922 60 0 60 60 0 8 0 uvmvnodes 72 2069 0 0 38 0 38 38 0 8 0 vnodes 208 2069 0 0 109 0 109 109 0 8 0 namei 1024 7099 0 7099 4 3 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 40 0 36 3 2 1 1 0 8 0 scxspl 192 7533 0 7533 1 0 1 1 0 8 1 plimitpl 152 36 0 30 1 0 1 1 0 8 0 sigapl 424 544 0 495 6 0 6 6 0 8 0 futexpl 56 6755 0 6755 3 2 1 1 0 8 1 knotepl 112 73 0 60 1 0 1 1 0 8 0 kqueuepl 144 38 0 36 1 0 1 1 0 8 0 pipepl 272 451 0 444 4 2 2 2 0 8 1 fdescpl 432 506 0 493 2 0 2 2 0 8 0 filepl 120 3523 0 3450 5 1 4 5 0 8 1 lockfpl 104 69 0 68 1 0 1 1 0 8 0 lockfspl 48 19 0 18 1 0 1 1 0 8 0 sessionpl 112 17 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 12 1 0 1 1 0 8 0 ucredpl 96 311 0 304 1 0 1 1 0 8 0 zombiepl 144 495 0 495 2 1 1 1 0 8 1 processpl 928 544 0 495 7 0 7 7 0 8 0 procpl 624 942 0 885 6 1 5 5 0 8 0 sosppl 128 6 0 5 2 1 1 1 0 8 0 sockpl 400 582 0 563 5 2 3 3 0 8 0 mcl64k 65536 33 0 33 3 2 1 1 0 8 1 mcl16k 16384 5 0 5 2 2 0 1 0 8 0 mcl12k 12288 4 0 4 2 1 1 1 0 8 1 mcl9k 9216 6 0 6 3 2 1 1 0 8 1 mcl8k 8192 14 0 14 3 2 1 1 0 8 1 mcl4k 4096 33 0 33 4 3 1 1 0 8 1 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 78654 0 78597 21 13 8 19 0 8 0 mtagpl 96 57 0 47 2 1 1 1 0 8 0 mbufpl 256 126700 0 126563 23 6 17 17 0 8 1 bufpl 280 4030 0 126 279 0 279 279 0 8 0 anonpl 16 62565 0 49691 87 6 81 84 0 107 14 amapchunkpl 152 2696 0 2567 21 2 19 19 0 158 13 amappl16 192 2661 0 1750 59 8 51 58 0 8 5 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 22 0 18 1 0 1 1 0 8 0 amappl13 168 183 0 179 1 0 1 1 0 8 0 amappl12 160 14 0 12 1 0 1 1 0 8 0 amappl11 152 194 0 185 1 0 1 1 0 8 0 amappl10 144 21 0 17 1 0 1 1 0 8 0 amappl9 136 383 0 380 1 0 1 1 0 8 0 amappl8 128 339 0 293 2 0 2 2 0 8 0 amappl7 120 107 0 94 1 0 1 1 0 8 0 amappl6 112 167 0 163 1 0 1 1 0 8 0 amappl5 104 433 0 422 1 0 1 1 0 8 0 amappl4 96 573 0 544 1 0 1 1 0 8 0 amappl3 88 110 0 104 1 0 1 1 0 8 0 amappl2 80 3242 0 3180 2 0 2 2 0 8 0 amappl1 72 18535 0 18137 24 15 9 17 0 8 0 amappl 80 1148 0 1107 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 21 0 3 1 0 1 1 0 8 0 uaddrrnd 24 512 0 495 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 512 0 495 1 0 1 1 0 8 0 vmmpekpl 168 8561 0 8528 2 0 2 2 0 8 0 vmmpepl 168 67166 0 65224 129 27 102 111 0 357 16 vmsppl 272 511 0 495 3 1 2 2 0 8 0 pdppl 4096 1030 0 994 7 1 6 6 0 8 1 pvpl 32 192626 0 176717 202 8 194 197 0 265 33 pmappl 200 511 0 495 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 284 0 45 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac4800,ffff800000b28400,ffff80001d77d3e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d77d3d0,ffff800000ac4800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80613ba4d0,80206913,ffff80001d77d3d0,ffff80001e7af138) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001e7af138,ffff80001d77d4e8,ffff80001d77d530) at sys_ioctl+0x4a1 syscall(ffff80001d77d5b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x492edd4b830, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac4800,ffff800000b28400,ffff80001d77d3e0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff80001d77d3d0,ffff800000ac4800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80613ba4d0,80206913,ffff80001d77d3d0,ffff80001e7af138) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001e7af138,ffff80001d77d4e8,ffff80001d77d530) at sys_ioctl+0x4a1 syscall(ffff80001d77d5b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x492edd4b830, count: -6