uvm_fault(0xffffffff82559478, 0xffff800000b37076, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff82559478, 0xffff800000b37076, 0, 1) -> e rtable_satoplen(2,ffff800000b36f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff80001492bfc0, count: 0 ddb> trace rtable_satoplen(2,ffff800000b36f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd8036b0a320,ffff800000b36f78,ffff800000b36f58,4) at rtable_lookup+0xe0 sys/net/rtable.c:391 rtrequest_delete(ffff80001492c060,4,ffff800000b30800,ffff80001492c130,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000b36f00,800100,ffff800000b36f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_ioctl_change_ifaddr(8040691a,ffff80001492c3c0,ffff800000b30800,1) at in_ioctl_change_ifaddr+0x355 in_remove_prefix sys/netinet/in.c:738 [inline] in_ioctl_change_ifaddr(8040691a,ffff80001492c3c0,ffff800000b30800,1) at in_ioctl_change_ifaddr+0x355 in_ifscrub sys/netinet/in.c:562 [inline] in_ioctl_change_ifaddr(8040691a,ffff80001492c3c0,ffff800000b30800,1) at in_ioctl_change_ifaddr+0x355 sys/netinet/in.c:432 in_ioctl(8040691a,ffff80001492c3c0,ffff800000b30800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd803af87c28,8040691a,ffff80001492c3c0,ffff80001595f160) at ifioctl+0xb34 sys/net/if.c:2202 sys_ioctl(ffff80001595f160,ffff80001492c4d8,ffff80001492c520) at sys_ioctl+0x5b9 syscall(ffff80001492c5a0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,60f4f461010) at Xsyscall+0x128 end of kernel end trace frame: 0x6120ecbdb80, count: -10 ddb> show registers rdi 0 rsi 0xff rbp 0xffff80001492bf20 rbx 0xffffffffffffff05 rdx 0xffff800000b36f7c rcx 0xffff800000b37077 rax 0xffff800000b37077 r8 0x4 r9 0x7 r10 0xcb49b06235fe3ad5 r11 0xc6f06c8e3ee9b4b3 r12 0 r13 0xffff800000b37077 r14 0xffffffff824ab3a0 inetdomain r15 0x4 rip 0xffffffff818dbab0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff80001492bed0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb> show proc PROC (syz-executor.1) pid=348281 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80001595f650,0xffffffff82569d40 process=0xffff8000ffff6370 user=0xffff800014927000, vmspace=0xfffffd803f013aa0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69407 451105 89714 0 2 0 syz-executor.1 *69407 348281 89714 0 7 0x4000000 syz-executor.1 42549 56894 94259 0 3 0x80 nanosleep syz-executor.0 42549 259849 94259 0 3 0x4000080 ttyin syz-executor.0 42549 336198 94259 0 3 0x4000080 fsleep syz-executor.0 89714 420632 85904 0 3 0x82 nanosleep syz-executor.1 72558 363413 0 0 3 0x14200 acct acct 94259 156765 85904 0 3 0x82 nanosleep syz-executor.0 21463 405544 0 0 3 0x14200 bored sosplice 85904 168721 51521 0 3 0x82 thrsleep syz-fuzzer 85904 376622 51521 0 3 0x4000082 thrsleep syz-fuzzer 85904 445796 51521 0 3 0x4000082 kqread syz-fuzzer 85904 407291 51521 0 3 0x4000082 thrsleep syz-fuzzer 85904 317199 51521 0 3 0x4000082 thrsleep syz-fuzzer 85904 324592 51521 0 3 0x4000082 thrsleep syz-fuzzer 85904 442185 51521 0 3 0x4000082 thrsleep syz-fuzzer 51521 181630 58429 0 3 0x10008a pause ksh 58429 385685 14486 0 3 0x92 select sshd 6660 43376 1 0 3 0x100083 ttyin getty 14486 105932 1 0 3 0x80 select sshd 2977 148827 15326 73 3 0x100090 kqread syslogd 15326 412425 1 0 3 0x100082 netio syslogd 71337 38118 0 0 2 0x14200 zerothread 5620 381679 0 0 3 0x14200 aiodoned aiodoned 57118 365343 0 0 3 0x14200 syncer update 83639 106669 0 0 3 0x14200 cleaner cleaner 27715 56028 0 0 3 0x14200 reaper reaper 96383 194581 0 0 3 0x14200 pgdaemon pagedaemon 97655 217756 0 0 3 0x14200 bored crynlk 48651 410896 0 0 3 0x14200 bored crypto 50502 116110 0 0 3 0x40014200 acpi0 acpi0 89064 438732 0 0 3 0x14200 bored softnet 38015 70328 0 0 3 0x14200 bored systqmp 33049 304531 0 0 3 0x14200 bored systq 919 158974 0 0 3 0x40014200 bored softclock 21071 286437 0 0 3 0x40014200 idle0 89571 188984 0 0 3 0x14200 bored smr 1 65137 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 Kern Lim devbuf 9553 6307K 7523K 78643K 15501 0 0 pcb 13 12K 14K 78643K 468 0 0 rtable 93 7K 8K 78643K 1441 0 0 ifaddr 73 15K 16K 78643K 403 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 199 0 0 iov 0 0K 32K 78643K 593 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1212 76K 77K 78643K 3967 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 46 0 0 VM map 32 8K 8K 78643K 42 0 0 sem 12 0K 0K 78643K 749 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 2396 0 0 sigio 0 0K 0K 78643K 30 0 0 proc 44 30K 55K 78643K 1033 0 0 subproc 32 2K 2K 78643K 244 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 175 0 0 in_multi 22 1K 2K 78643K 318 0 0 ether_multi 1 0K 0K 78643K 17 0 0 mrt 0 0K 0K 78643K 16 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 120 530K 530K 78643K 120 0 0 exec 0 0K 1K 78643K 642 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 141 265K 268K 78643K 7679 0 0 UVM aobj 130 4K 4K 78643K 138 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 455 0 0 NDP 18 0K 0K 78643K 134 0 0 temp 213 3544K 4185K 78643K 74845 0 0 kqueue 0 0K 0K 78643K 18 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 58 0 54 1 0 1 1 0 8 0 rtpcb 80 246 0 246 2 1 1 1 0 8 1 rtentry 112 327 0 295 2 0 2 2 0 8 0 unpcb 120 1557 0 1550 1 0 1 1 0 8 0 syncache 264 14 0 14 5 5 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 203 0 203 3 3 0 1 0 8 0 tcpcb 544 1559 0 1554 34 25 9 14 0 8 8 ipq 40 20 0 20 10 9 1 1 0 8 1 ipqe 40 349 0 349 10 9 1 1 0 8 1 inpcb 280 3539 0 3532 33 24 9 13 0 8 8 rttmr 72 6 0 6 4 4 0 1 0 8 0 ip6q 72 3 0 3 2 2 0 1 0 8 0 ip6af 40 8 0 8 2 2 0 1 0 8 0 nd6 48 41 0 39 2 1 1 1 0 8 0 pkpcb 40 14 0 14 3 3 0 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 48 0 48 11 10 1 1 0 8 1 art_heap8 4096 5 0 4 3 2 1 3 0 8 0 art_heap4 256 1374 0 1203 33 19 14 16 0 8 3 art_table 32 1379 0 1207 2 0 2 2 0 8 0 art_node 16 326 0 297 1 0 1 1 0 8 0 sysvmsgpl 40 78 0 54 1 0 1 1 0 8 0 semapl 112 747 0 737 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6368 0 4973 46 0 46 46 0 8 0 ffsino 240 6368 0 4973 83 0 83 83 0 8 0 nchpl 144 10490 0 10013 60 40 20 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 39435 0 39435 1 0 1 1 0 8 1 vcpupl 1984 30 0 0 4 0 4 4 0 8 0 vmpool 520 40 0 10 2 0 2 2 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 34121 0 34121 26 24 2 7 0 8 2 plimitpl 152 261 0 255 1 0 1 1 0 8 0 sigapl 432 2531 0 2519 2 0 2 2 0 8 0 futexpl 56 75160 0 75159 1 0 1 1 0 8 0 knotepl 112 665 0 646 2 1 1 2 0 8 0 kqueuepl 104 1319 0 1317 7 3 4 4 0 8 3 pipepl 112 2634 0 2615 9 7 2 2 0 8 1 fdescpl 424 2532 0 2519 2 0 2 2 0 8 0 filepl 120 29032 0 28943 31 20 11 11 0 8 8 lockfpl 104 2784 0 2783 1 0 1 1 0 8 0 lockfspl 48 867 0 866 1 0 1 1 0 8 0 sessionpl 112 29 0 21 1 0 1 1 0 8 0 pgrppl 48 55 0 47 1 0 1 1 0 8 0 ucredpl 96 8753 0 8747 1 0 1 1 0 8 0 zombiepl 144 2520 0 2520 1 0 1 1 0 8 1 processpl 864 2549 0 2520 4 0 4 4 0 8 0 procpl 632 6316 0 6278 7 3 4 5 0 8 0 sosppl 128 46 0 46 11 10 1 1 0 8 1 sockpl 384 5386 0 5372 51 40 11 21 0 8 8 mcl64k 65536 519 0 519 34 33 1 33 0 8 1 mcl16k 16384 41 0 41 10 9 1 1 0 8 1 mcl12k 12288 81 0 81 8 7 1 1 0 8 1 mcl9k 9216 43 0 43 12 12 0 1 0 8 0 mcl8k 8192 127 0 127 3 2 1 1 0 8 1 mcl4k 4096 291 0 291 3 2 1 1 0 8 1 mcl2k2 2112 22 0 22 10 10 0 1 0 8 0 mcl2k 2048 73141 0 73101 17 11 6 14 0 8 0 mtagpl 80 102 0 100 4 3 1 1 0 8 0 mbufpl 256 135441 0 135361 82 68 14 32 0 8 6 bufpl 256 15594 0 10450 322 0 322 322 0 8 0 anonpl 16 346833 0 331243 152 66 86 97 0 62 0 amapchunkpl 152 14451 0 14339 40 34 6 15 0 158 0 amappl16 192 16828 0 15629 159 96 63 72 0 8 1 amappl15 184 104 0 100 3 2 1 1 0 8 0 amappl14 176 264 0 257 1 0 1 1 0 8 0 amappl13 168 525 0 525 1 1 0 1 0 8 0 amappl12 160 270 0 269 1 0 1 1 0 8 0 amappl11 152 518 0 514 1 0 1 1 0 8 0 amappl10 144 484 0 483 1 0 1 1 0 8 0 amappl9 136 868 0 862 1 0 1 1 0 8 0 amappl8 128 438 0 405 2 0 2 2 0 8 0 amappl7 120 559 0 552 1 0 1 1 0 8 0 amappl6 112 492 0 484 1 0 1 1 0 8 0 amappl5 104 527 0 519 1 0 1 1 0 8 0 amappl4 96 2785 0 2757 1 0 1 1 0 8 0 amappl3 88 325 0 317 1 0 1 1 0 8 0 amappl2 80 19369 0 19296 3 1 2 3 0 8 0 amappl1 72 58110 0 57710 26 17 9 20 0 8 0 amappl 80 6751 0 6700 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 137 0 8 3 0 3 3 0 8 0 uaddrrnd 24 2572 0 2519 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2572 0 2519 1 0 1 1 0 8 0 vmmpekpl 168 22526 0 22495 2 0 2 2 0 8 0 vmmpepl 168 319607 0 317214 294 149 145 146 0 357 36 vmsppl 272 2531 0 2519 3 2 1 2 0 8 0 pdppl 4096 5150 0 5088 10 2 8 8 0 8 0 pvpl 32 841325 0 823476 329 131 198 222 0 265 5 pmappl 200 2571 0 2529 4 1 3 3 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 643 0 177 14 0 14 14 0 8 0