uvm_fault(0xfffffd806bc09dd0, 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(0xfffffd806bc09dd0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000aea800,ffff8000207bb710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff8000207bb630, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000aea800,ffff8000207bb710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff8000207bb700,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da5be18,80206913,ffff8000207bb700,ffff80001d6ea298) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6ea298,ffff8000207bb818,ffff8000207bb860) at sys_ioctl+0x4a1 syscall(ffff8000207bb8e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2fd8701e80, count: -6 ddb> show registers rdi 0xffffffff81a47ffb ifa_update_broadaddr+0x1b rsi 0x37 rbp 0xffff8000207bb590 rbx 0x10 rdx 0x38 rcx 0xffff80001e780000 rax 0xffff80001e780000 r8 0xffffffff81e338f7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x2d92bd5dfaf5c1d5 r12 0xffff8000207bb710 r13 0xffff8000207bb700 r14 0xffff8000207bb710 r15 0 rip 0xffffffff81a47fff ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000207bb550 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=182759 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6ea778,0xffffffff82847870 process=0xffff80001d6ec3d0 user=0xffff8000207b6000, vmspace=0xfffffd806bc09dd0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 54741 312275 14653 0 2 0 syz-executor.1 *54741 182759 14653 0 7 0x4000000 syz-executor.1 65464 25117 0 0 3 0x14280 nfsidl nfsio 50198 456161 0 0 3 0x14280 nfsidl nfsio 59075 66760 0 0 3 0x14280 nfsidl nfsio 62429 259973 0 0 3 0x14280 nfsidl nfsio 79518 259640 0 0 3 0x14280 nfsidl nfsio 97604 454052 0 0 3 0x14280 nfsidl nfsio 42647 458975 0 0 3 0x14280 nfsidl nfsio 76299 77279 0 0 3 0x14280 nfsidl nfsio 96119 464799 0 0 3 0x14280 nfsidl nfsio 85394 4508 0 0 3 0x14280 nfsidl nfsio 35627 212748 0 0 3 0x14280 nfsidl nfsio 63310 295398 0 0 3 0x14280 nfsidl nfsio 68703 271972 0 0 3 0x14280 nfsidl nfsio 62344 147456 0 0 3 0x14280 nfsidl nfsio 56155 86499 0 0 3 0x14280 nfsidl nfsio 83609 403304 0 0 3 0x14280 nfsidl nfsio 18219 290510 0 0 3 0x14280 nfsidl nfsio 27927 315994 0 0 3 0x14280 nfsidl nfsio 77251 48394 0 0 3 0x14280 nfsidl nfsio 17513 415608 0 0 3 0x14280 nfsidl nfsio 77561 327333 0 0 3 0x14200 bored sosplice 14653 437002 80225 0 3 0x82 nanosleep syz-executor.1 36417 261996 80225 0 3 0x82 nanosleep syz-executor.0 80225 6302 79165 0 3 0x82 thrsleep syz-fuzzer 80225 305044 79165 0 3 0x4000082 thrsleep syz-fuzzer 80225 427360 79165 0 3 0x4000082 thrsleep syz-fuzzer 80225 35245 79165 0 3 0x4000082 thrsleep syz-fuzzer 80225 74089 79165 0 3 0x4000082 thrsleep syz-fuzzer 80225 310023 79165 0 3 0x4000082 thrsleep syz-fuzzer 80225 252661 79165 0 3 0x4000082 thrsleep syz-fuzzer 80225 504726 79165 0 3 0x4000082 kqread syz-fuzzer 79165 520149 41554 0 3 0x10008a pause ksh 41554 54543 13245 0 3 0x92 select sshd 83677 177732 1 0 3 0x100083 ttyin getty 13245 300996 1 0 3 0x80 select sshd 9942 20760 21694 73 3 0x100090 kqread syslogd 21694 95456 1 0 3 0x100082 netio syslogd 67000 324286 1 77 3 0x100090 poll dhclient 88497 207462 1 0 3 0x80 poll dhclient 70687 283759 0 0 3 0x14200 bored smr 48591 338900 0 0 2 0x14200 zerothread 62652 131422 0 0 3 0x14200 aiodoned aiodoned 40238 223521 0 0 3 0x14200 syncer update 3691 448190 0 0 3 0x14200 cleaner cleaner 2126 2464 0 0 3 0x14200 reaper reaper 23008 272737 0 0 3 0x14200 pgdaemon pagedaemon 10809 441025 0 0 3 0x14200 bored crynlk 88388 396952 0 0 3 0x14200 bored crypto 79057 348030 0 0 3 0x40014200 acpi0 acpi0 71742 380074 0 0 3 0x14200 bored softnet 70334 368430 0 0 3 0x14200 bored systqmp 65081 80703 0 0 3 0x14200 bored systq 28865 194624 0 0 3 0x40014200 bored softclock 96185 312011 0 0 3 0x40014200 idle0 1 164526 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 9480 6344K 7512K 78643K 28464 0 pcb 13 8K 8K 78643K 649 0 rtable 126 9K 9K 78643K 711 0 ifaddr 92 20K 20K 78643K 238 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 17165 0 iov 0 0K 16K 78643K 143 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 4972 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 46 0 VM map 2 0K 0K 78643K 2 0 sem 11 1K 1K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 13408 0 sigio 0 0K 0K 78643K 90 0 proc 50 38K 63K 78643K 439 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 39 0 in_multi 51 2K 2K 78643K 116 0 ether_multi 1 0K 0K 78643K 13 0 mrt 0 0K 0K 78643K 217 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 243 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 148 40K 40K 78643K 28039 0 UVM aobj 114 3K 3K 78643K 124 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 68 0 NDP 9 0K 0K 78643K 23 0 temp 120 3866K 3930K 78643K 35948 0 kqueue 3 4K 8K 78643K 13 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 8 0 3 1 0 1 1 0 8 0 rtpcb 80 37 0 35 1 0 1 1 0 8 0 rtentry 112 161 0 121 2 0 2 2 0 8 0 unpcb 120 429 0 421 1 0 1 1 0 8 0 syncache 264 10 0 10 3 3 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 186 0 186 1 1 0 1 0 8 0 tcpcb 544 273 0 268 1 0 1 1 0 8 0 inpcb 296 9400 0 9392 15 13 2 2 0 8 1 rttmr 72 98 0 98 1 1 0 1 0 8 0 nd6 48 13 0 9 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 ppxss 1128 3 0 3 2 2 0 1 0 8 0 pfstscr 40 9379 0 9378 4 3 1 1 0 8 0 pfosfp 40 32 0 31 1 0 1 1 0 8 0 pfosfpen 112 36 0 35 1 0 1 1 0 8 0 pfrktable 1344 32 0 23 2 1 1 1 0 8 0 pftag 88 5 0 2 2 1 1 1 0 8 0 pfqueue 264 54 0 4 4 0 4 4 0 8 0 pfstitem 24 3641 0 3639 5 4 1 1 0 8 0 pfstkey 112 17602 0 17600 4 3 1 1 0 8 0 pfstate 328 8805 0 8804 4 3 1 1 0 8 0 pfrule 1360 564 0 18 46 0 46 46 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 247 0 46 13 0 13 13 0 8 0 art_table 32 248 0 46 2 0 2 2 0 8 0 art_node 16 158 0 122 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 121 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14938 0 13540 88 0 88 88 0 8 0 ffsino 240 14938 0 13540 83 0 83 83 0 8 0 nchpl 144 34984 0 33381 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 92806 0 92806 3 2 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 83 0 7 4 1 3 3 0 8 0 scxspl 192 87976 0 87976 1 0 1 1 0 8 1 plimitpl 152 53 0 46 1 0 1 1 0 8 0 sigapl 424 13615 0 13566 6 0 6 6 0 8 0 futexpl 56 200578 0 200578 3 2 1 1 0 8 1 knotepl 112 78 0 59 1 0 1 1 0 8 0 kqueuepl 144 121 0 117 1 0 1 1 0 8 0 pipepl 272 501 0 491 1 0 1 1 0 8 0 fdescpl 432 13580 0 13566 2 0 2 2 0 8 0 filepl 120 54202 0 54106 5 1 4 4 0 8 0 lockfpl 104 502 0 501 1 0 1 1 0 8 0 lockfspl 48 168 0 167 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 35 0 25 1 0 1 1 0 8 0 ucredpl 96 614 0 607 1 0 1 1 0 8 0 zombiepl 144 13566 0 13565 1 0 1 1 0 8 0 processpl 928 13615 0 13565 7 0 7 7 0 8 0 procpl 624 27333 0 27275 6 1 5 5 0 8 0 sosppl 128 12 0 12 1 1 0 1 0 8 0 sockpl 400 9870 0 9852 11 8 3 3 0 8 1 mcl64k 65536 51 0 51 13 13 0 1 0 8 0 mcl16k 16384 32 0 32 15 14 1 1 0 8 1 mcl12k 12288 138 0 138 13 12 1 1 0 8 1 mcl9k 9216 43 0 43 11 10 1 1 0 8 1 mcl8k 8192 92 0 92 15 14 1 1 0 8 1 mcl4k 4096 1317 0 1317 7 6 1 1 0 8 1 mcl2k2 2112 59 0 59 16 15 1 1 0 8 1 mcl2k 2048 98237 0 98173 25 15 10 14 0 8 0 mtagpl 96 3506 0 3250 15 2 13 13 0 8 2 mbufpl 256 198301 0 197694 80 7 73 74 0 8 2 bufpl 280 17011 0 11659 383 0 383 383 0 8 0 anonpl 16 795378 0 778895 87 15 72 82 0 107 0 amapchunkpl 152 41893 0 41758 13 7 6 11 0 158 0 amappl16 192 50746 0 49760 69 18 51 58 0 8 1 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl13 168 6756 0 6752 1 0 1 1 0 8 0 amappl12 160 6766 0 6765 2 1 1 1 0 8 0 amappl11 152 47 0 37 1 0 1 1 0 8 0 amappl10 144 13 0 7 1 0 1 1 0 8 0 amappl9 136 6986 0 6983 1 0 1 1 0 8 0 amappl8 128 7016 0 6961 2 0 2 2 0 8 0 amappl7 120 107 0 95 1 0 1 1 0 8 0 amappl6 112 25 0 17 1 0 1 1 0 8 0 amappl5 104 13553 0 13542 1 0 1 1 0 8 0 amappl4 96 452 0 426 1 0 1 1 0 8 0 amappl3 88 280 0 274 1 0 1 1 0 8 0 amappl2 80 114267 0 114199 2 0 2 2 0 8 0 amappl1 72 203865 0 203459 24 15 9 17 0 8 0 amappl 80 27530 0 27488 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 64 123 0 10 2 0 2 2 0 8 0 uaddrrnd 24 13584 0 13568 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 13584 0 13568 1 0 1 1 0 8 0 vmmpekpl 168 61996 0 61964 2 0 2 2 0 8 0 vmmpepl 168 1495373 0 1493273 139 42 97 115 0 357 5 vmsppl 272 13583 0 13568 2 0 2 2 0 8 1 pdppl 4096 27174 0 27138 6 1 5 6 0 8 0 pvpl 32 2264105 0 2244527 201 32 169 192 0 265 0 pmappl 200 13583 0 13568 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 421 0 83 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000aea800,ffff8000207bb710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff8000207bb700,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da5be18,80206913,ffff8000207bb700,ffff80001d6ea298) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6ea298,ffff8000207bb818,ffff8000207bb860) at sys_ioctl+0x4a1 syscall(ffff8000207bb8e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2fd8701e80, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000aea800,ffff8000207bb710) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff8000207bb700,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd805da5be18,80206913,ffff8000207bb700,ffff80001d6ea298) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6ea298,ffff8000207bb818,ffff8000207bb860) at sys_ioctl+0x4a1 syscall(ffff8000207bb8e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2fd8701e80, count: -6