uvm_fault(0xfffffd805750a008, 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(0xfffffd805750a008, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6900,ffff80001fe2fb30) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 end trace frame: 0xffff80001fe2fa50, count: 0 ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6900,ffff80001fe2fb30) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff80001fe2fb20,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8062d65c80,80206913,ffff80001fe2fb20,ffff80001d7969e0) at ifioctl+0xe60 sys/net/if.c:2285 sys_ioctl(ffff80001d7969e0,ffff80001fe2fc38,ffff80001fe2fc80) at sys_ioctl+0x4a1 syscall(ffff80001fe2fd00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x42e74b05820, count: -6 ddb> show registers rdi 0xffffffff820f5a4b ifa_update_broadaddr+0x1b rsi 0x41 rbp 0xffff80001fe2f9b0 rbx 0x10 rdx 0x42 rcx 0xffff80001d79e000 rax 0xffff80001d79e000 r8 0xffffffff8223e3e7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x568dd4f6746fc1f8 r12 0xffff80001fe2fb30 r13 0xaa0014ac r14 0xffff80001fe2fb30 r15 0 rip 0xffffffff820f5a4f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001fe2f970 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=288836 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d796ec0,0xffffffff82853eb0 process=0xffff80001fda6eb0 user=0xffff80001fe2a000, vmspace=0xfffffd805750a008 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78284 447461 72514 0 2 0 syz-executor.0 *78284 288836 72514 0 7 0x4000000 syz-executor.0 84752 511078 0 0 3 0x14200 bored sosplice 23077 352399 0 0 3 0x14280 nfsidl nfsio 78135 213658 0 0 3 0x14280 nfsidl nfsio 68345 437547 0 0 3 0x14280 nfsidl nfsio 159 496615 0 0 3 0x14280 nfsidl nfsio 37651 460743 0 0 3 0x14280 nfsidl nfsio 32251 17292 0 0 3 0x14280 nfsidl nfsio 10802 398163 0 0 3 0x14280 nfsidl nfsio 29917 44807 0 0 3 0x14280 nfsidl nfsio 22889 244394 0 0 3 0x14280 nfsidl nfsio 3782 119907 0 0 3 0x14280 nfsidl nfsio 45407 464423 0 0 3 0x14280 nfsidl nfsio 84313 65084 0 0 3 0x14280 nfsidl nfsio 9548 132963 0 0 3 0x14280 nfsidl nfsio 9287 314907 0 0 3 0x14280 nfsidl nfsio 80814 493718 0 0 3 0x14280 nfsidl nfsio 17282 513630 0 0 3 0x14280 nfsidl nfsio 14781 297625 0 0 3 0x14280 nfsidl nfsio 70388 386113 0 0 3 0x14280 nfsidl nfsio 94916 451953 0 0 3 0x14280 nfsidl nfsio 69524 6571 0 0 3 0x14280 nfsidl nfsio 54655 498666 86905 0 2 0x2 syz-executor.1 72514 500500 86905 0 3 0x82 nanosleep syz-executor.0 86905 231720 43584 0 3 0x82 thrsleep syz-fuzzer 86905 251958 43584 0 3 0x4000082 nanosleep syz-fuzzer 86905 513909 43584 0 3 0x4000082 kqread syz-fuzzer 86905 381486 43584 0 3 0x4000082 thrsleep syz-fuzzer 86905 521419 43584 0 3 0x4000082 thrsleep syz-fuzzer 86905 295412 43584 0 3 0x4000082 thrsleep syz-fuzzer 86905 342620 43584 0 3 0x4000082 thrsleep syz-fuzzer 86905 67532 43584 0 3 0x4000082 thrsleep syz-fuzzer 43584 277479 37033 0 3 0x10008a pause ksh 37033 231084 44838 0 3 0x92 select sshd 79873 173714 1 0 3 0x100083 ttyin getty 44838 462460 1 0 3 0x80 select sshd 75749 400704 37188 73 3 0x100090 kqread syslogd 37188 260660 1 0 3 0x100082 netio syslogd 5250 249746 1 77 3 0x100090 poll dhclient 55047 331111 1 0 3 0x80 poll dhclient 23326 346738 0 0 3 0x14200 bored smr 16018 221479 0 0 2 0x14200 zerothread 31419 418478 0 0 3 0x14200 aiodoned aiodoned 86686 371637 0 0 3 0x14200 syncer update 7110 31218 0 0 3 0x14200 cleaner cleaner 35449 519879 0 0 3 0x14200 reaper reaper 25766 48910 0 0 3 0x14200 pgdaemon pagedaemon 57285 387129 0 0 3 0x14200 bored crynlk 86718 373421 0 0 3 0x14200 bored crypto 92989 112510 0 0 3 0x40014200 acpi0 acpi0 31520 296805 0 0 3 0x14200 bored softnet 22056 83978 0 0 3 0x14200 bored systqmp 50556 80121 0 0 3 0x14200 bored systq 42072 405782 0 0 3 0x40014200 bored softclock 90841 33714 0 0 3 0x40014200 idle0 1 446763 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 9492 6346K 7187K 78643K 12207 0 pcb 13 8K 8K 78643K 73 0 rtable 112 11K 14K 78643K 346 0 ifaddr 79 17K 17K 78643K 123 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 67 0 iov 0 0K 12K 78643K 40 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1642 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 76 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 381 0 sigio 0 0K 0K 78643K 10 0 proc 49 38K 63K 78643K 388 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 89 4K 4K 78643K 145 0 ether_multi 1 0K 0K 78643K 12 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 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 210 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 141 40K 49K 78643K 1718 0 UVM aobj 24 2K 2K 78643K 28 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 52 0 NDP 10 0K 0K 78643K 21 0 temp 96 3857K 3921K 78643K 13635 0 kqueue 3 4K 6K 78643K 8 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 45 0 43 1 0 1 1 0 8 0 rtentry 112 55 0 11 2 0 2 2 0 8 0 unpcb 120 861 0 853 2 1 1 2 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 302 0 302 1 1 0 1 0 8 0 tcpcb 544 117 0 112 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 296 333 0 325 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 13 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 26 0 26 2 1 1 1 0 8 1 pftag 88 4 0 4 1 0 1 1 0 8 1 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 10 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 207 0 2 13 0 13 13 0 8 0 art_table 32 208 0 2 2 0 2 2 0 8 0 art_node 16 54 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 25 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1901 0 506 88 0 88 88 0 8 0 ffsino 240 1901 0 506 83 0 83 83 0 8 0 nchpl 144 2620 0 1030 60 0 60 60 0 8 0 uvmvnodes 72 2314 0 0 43 0 43 43 0 8 0 vnodes 208 2314 0 0 122 0 122 122 0 8 0 namei 1024 7130 0 7130 1 0 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 8 0 8 2 1 1 1 0 8 1 scxspl 192 7854 0 7854 1 0 1 1 0 8 1 plimitpl 152 34 0 27 1 0 1 1 0 8 0 sigapl 424 588 0 539 6 0 6 6 0 8 0 futexpl 56 7635 0 7635 1 0 1 1 0 8 1 knotepl 112 67 0 48 1 0 1 1 0 8 0 kqueuepl 144 32 0 30 1 0 1 1 0 8 0 pipepl 272 113 0 103 1 0 1 1 0 8 0 fdescpl 432 553 0 539 2 0 2 2 0 8 0 filepl 120 3726 0 3630 5 1 4 5 0 8 1 lockfpl 104 69 0 68 1 0 1 1 0 8 0 lockfspl 48 27 0 26 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 364 0 357 1 0 1 1 0 8 0 zombiepl 144 539 0 539 1 0 1 1 0 8 1 processpl 928 588 0 539 7 0 7 7 0 8 0 procpl 624 1024 0 967 5 0 5 5 0 8 0 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 400 1241 0 1223 6 2 4 6 0 8 2 mcl64k 65536 526 0 526 65 26 39 65 0 8 39 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 10 0 10 2 1 1 1 0 8 1 mcl9k 9216 2 0 2 2 2 0 1 0 8 0 mcl8k 8192 10 0 10 2 1 1 1 0 8 1 mcl4k 4096 36 0 36 2 1 1 1 0 8 1 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 91254 0 91205 24 17 7 19 0 8 0 mtagpl 96 49 0 3 3 1 2 2 0 8 0 mbufpl 256 147121 0 146898 45 29 16 39 0 8 1 bufpl 280 4074 0 127 282 0 282 282 0 8 0 anonpl 16 76333 0 59421 98 13 85 89 0 107 12 amapchunkpl 152 2570 0 2433 15 4 11 11 0 158 4 amappl16 192 2916 0 1921 74 16 58 63 0 8 8 amappl15 184 185 0 182 1 0 1 1 0 8 0 amappl14 176 26 0 18 1 0 1 1 0 8 0 amappl13 168 34 0 30 1 0 1 1 0 8 0 amappl12 160 10 0 5 1 0 1 1 0 8 0 amappl11 152 43 0 34 1 0 1 1 0 8 0 amappl10 144 362 0 353 1 0 1 1 0 8 0 amappl9 136 377 0 376 1 0 1 1 0 8 0 amappl8 128 333 0 288 2 0 2 2 0 8 0 amappl7 120 453 0 439 1 0 1 1 0 8 0 amappl6 112 22 0 18 1 0 1 1 0 8 0 amappl5 104 482 0 470 1 0 1 1 0 8 0 amappl4 96 425 0 398 1 0 1 1 0 8 0 amappl3 88 113 0 107 1 0 1 1 0 8 0 amappl2 80 3607 0 3541 2 0 2 2 0 8 0 amappl1 72 21537 0 21130 24 15 9 17 0 8 0 amappl 80 1226 0 1182 2 0 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 27 0 4 1 0 1 1 0 8 0 uaddrrnd 24 557 0 541 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 557 0 541 1 0 1 1 0 8 0 vmmpekpl 168 7253 0 7221 2 0 2 2 0 8 0 vmmpepl 168 74705 0 72606 129 21 108 118 0 357 16 vmsppl 272 556 0 541 2 0 2 2 0 8 0 pdppl 4096 1120 0 1084 6 1 5 6 0 8 0 pvpl 32 215322 0 195336 213 12 201 210 0 265 30 pmappl 200 556 0 541 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 352 0 79 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6900,ffff80001fe2fb30) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff80001fe2fb20,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8062d65c80,80206913,ffff80001fe2fb20,ffff80001d7969e0) at ifioctl+0xe60 sys/net/if.c:2285 sys_ioctl(ffff80001d7969e0,ffff80001fe2fc38,ffff80001fe2fc80) at sys_ioctl+0x4a1 syscall(ffff80001fe2fd00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x42e74b05820, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000ad6900,ffff80001fe2fb30) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff80001fe2fb20,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8062d65c80,80206913,ffff80001fe2fb20,ffff80001d7969e0) at ifioctl+0xe60 sys/net/if.c:2285 sys_ioctl(ffff80001d7969e0,ffff80001fe2fc38,ffff80001fe2fc80) at sys_ioctl+0x4a1 syscall(ffff80001fe2fd00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x42e74b05820, count: -6