uvm_fault(0xffffffff82620600, 0xffff800000b1e074, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff82620600, 0xffff800000b1e074, 0, 1) -> e rtable_satoplen(2,ffff800000b1df78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800020b3f2b0, count: 0 ddb{0}> trace rtable_satoplen(2,ffff800000b1df78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd806253f520,ffff800000b1df78,ffff800000b1df58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800020b3f350,4,ffff800000b17000,ffff800020b3f420,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000b1df00,800100,ffff800000b1df58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000b1df00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000b1df00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000b1df00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000b17000,ffff800000b1df00,ffff800020b3f7a0,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800020b3f790,ffff800000b17000,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800020b3f790,ffff800000b17000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80760a8680,8040691a,ffff800020b3f790,ffff800020abf160) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020abf160,ffff800020b3f8a8,ffff800020b3f8f0) at sys_ioctl+0x5b9 syscall(ffff800020b3f970) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b3f970) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,b890380a010) at Xsyscall+0x128 end of kernel end trace frame: 0xb8b9a1b2790, count: -12 ddb{0}> show registers rdi 0 rsi 0xfd rbp 0xffff800020b3f210 rbx 0xffffffffffffff07 rdx 0xffff800000b1df7c rcx 0xffff800000b1e075 rax 0xffff800000b1e075 r8 0x4 r9 0x5 r10 0x9a56248b2083ac5a r11 0xbf5de4aecf44a0e5 r12 0 r13 0xffff800000b1e075 r14 0xffffffff824685c0 inetdomain r15 0x4 rip 0xffffffff816e4d60 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800020b3f1c0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=253551 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020abe290,0xffff800020abeef8 process=0xffff800020add880 user=0xffff800020b3a000, vmspace=0xfffffd807f00aa10 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 65993 124730 43760 0 2 0 syz-executor.0 *65993 253551 43760 0 7 0x4000000 syz-executor.0 65993 376083 43760 0 3 0x4000080 fsleep syz-executor.0 6431 40140 64478 0 3 0x82 nanosleep syz-executor.1 43760 217101 64478 0 3 0x82 nanosleep syz-executor.0 55587 7548 0 0 3 0x14200 acct acct 99786 433397 0 0 3 0x14200 bored sosplice 64478 8560 17170 0 3 0x82 thrsleep syz-fuzzer 64478 321006 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 161914 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 421723 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 153562 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 77020 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 405726 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 386570 17170 0 3 0x4000082 thrsleep syz-fuzzer 64478 313125 17170 0 3 0x4000082 kqread syz-fuzzer 64478 504548 17170 0 3 0x4000082 thrsleep syz-fuzzer 17170 55374 61354 0 3 0x10008a pause ksh 61354 446494 72545 0 3 0x92 select sshd 45443 72896 1 0 3 0x100083 ttyopn getty 72545 314110 1 0 3 0x80 select sshd 91637 270392 71210 74 3 0x100092 bpf pflogd 71210 422779 1 0 3 0x80 netio pflogd 37506 478052 62712 73 3 0x100090 kqread syslogd 62712 361283 1 0 3 0x100082 netio syslogd 69820 364279 1 77 3 0x100090 poll dhclient 99376 106205 1 0 3 0x80 poll dhclient 57906 56786 0 0 2 0x14200 zerothread 33435 199096 0 0 3 0x14200 aiodoned aiodoned 65985 45442 0 0 3 0x14200 syncer update 74912 369177 0 0 3 0x14200 cleaner cleaner 53239 514213 0 0 7 0x14200 reaper 71252 433734 0 0 3 0x14200 pgdaemon pagedaemon 45354 483654 0 0 3 0x14200 bored crynlk 32567 270763 0 0 3 0x14200 bored crypto 3248 143665 0 0 3 0x40014200 acpi0 acpi0 21507 111918 0 0 3 0x40014200 idle1 93558 420680 0 0 3 0x14200 bored softnet 25337 138897 0 0 3 0x14200 bored systqmp 2387 82128 0 0 3 0x14200 bored systq 39842 376682 0 0 3 0x40014200 bored softclock 28864 281804 0 0 3 0x40014200 idle0 34451 370206 0 0 3 0x14200 bored smr 1 1357 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 65993 (syz-executor.0) thread 0xffff800020abf160 (253551) exclusive rwlock netlock r = 0 (0xffffffff824ca238) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl_change_ifaddr+0x3f #2 in_ioctl+0x205 sys/netinet/in.c:234 #3 ifioctl+0xb64 sys/net/if.c:2202 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82625ee0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9601 6450K 7466K 78643K 16396 0 0 pcb 13 12K 14K 78643K 509 0 0 rtable 101 5K 6K 78643K 2023 0 0 ifaddr 91 20K 21K 78643K 638 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1607 0 0 iov 0 0K 28K 78643K 1176 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 3440 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 42 0 0 VM map 24 12K 12K 78643K 34 0 0 sem 12 0K 1K 78643K 420 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 2560 0 0 sigio 0 0K 0K 78643K 43 0 0 proc 62 63K 83K 78643K 1248 0 0 subproc 32 2K 2K 78643K 272 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 259 0 0 in_multi 25 1K 2K 78643K 332 0 0 ether_multi 1 0K 0K 78643K 30 0 0 mrt 2 0K 0K 78643K 21 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 657 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 154 202K 211K 78643K 10702 0 0 UVM aobj 130 4K 4K 78643K 131 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 512 0 0 NDP 22 0K 0K 78643K 195 0 0 temp 243 3565K 3641K 78643K 77177 0 0 kqueue 0 0K 0K 78643K 29 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 75 0 70 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 241 0 239 1 0 1 1 0 8 0 rtentry 112 340 0 304 2 0 2 2 0 8 0 unpcb 120 1359 0 1348 3 2 1 2 0 8 0 syncache 264 14 0 14 5 5 0 1 0 8 0 sackhl 24 4 0 4 3 3 0 1 0 8 0 tcpqe 32 82 0 82 3 3 0 1 0 8 0 tcpcb 544 1673 0 1669 17 16 1 12 0 8 0 inpcb 280 4047 0 4038 31 29 2 13 0 8 1 rttmr 72 8 0 7 4 3 1 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 43 0 41 1 0 1 1 0 8 0 pkpcb 40 11 0 11 4 4 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 94 0 94 7 6 1 1 0 8 1 pffrag 232 72 0 72 11 10 1 1 0 482 1 pffrnode 88 66 0 66 11 10 1 1 0 8 1 pffrent 40 1857 0 1857 11 10 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 260 0 213 1 0 1 1 0 8 0 pfstkey 112 261 0 214 2 0 2 2 0 8 0 pfstate 328 261 0 214 8 2 6 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 9 0 8 6 5 1 3 0 8 0 art_heap4 256 1384 0 1184 31 15 16 16 0 8 2 art_table 32 1393 0 1192 3 0 3 3 0 8 0 art_node 16 339 0 306 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 416 0 406 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6114 0 4708 46 0 46 46 0 8 0 ffsino 272 6114 0 4708 97 2 95 95 0 8 0 nchpl 144 10664 0 9050 61 0 61 61 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 36360 0 36360 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 22 0 0 3 0 3 3 0 8 0 vmpool 552 32 0 10 3 1 2 2 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 37875 0 37875 33 32 1 7 0 8 1 plimitpl 152 229 0 221 1 0 1 1 0 8 0 sigapl 432 2718 0 2703 3 1 2 3 0 8 0 futexpl 56 58566 0 58565 3 2 1 1 0 8 0 knotepl 112 665 0 646 1 0 1 1 0 8 0 kqueuepl 104 2520 0 2518 5 4 1 4 0 8 0 pipepl 112 1642 0 1623 5 3 2 2 0 8 1 fdescpl 488 2719 0 2703 3 0 3 3 0 8 0 filepl 152 25598 0 25496 37 31 6 14 0 8 2 lockfpl 104 1953 0 1952 1 0 1 1 0 8 0 lockfspl 48 544 0 543 1 0 1 1 0 8 0 sessionpl 112 32 0 21 1 0 1 1 0 8 0 pgrppl 48 67 0 56 1 0 1 1 0 8 0 ucredpl 96 2812 0 2803 1 0 1 1 0 8 0 zombiepl 144 2703 0 2702 2 1 1 1 0 8 0 processpl 896 2736 0 2702 4 0 4 4 0 8 0 procpl 632 9035 0 8990 8 3 5 5 0 8 1 srpgc 64 22 0 22 9 8 1 1 0 8 1 sosppl 128 36 0 36 10 10 0 1 0 8 0 sockpl 384 5703 0 5681 54 50 4 22 0 8 1 mcl64k 65536 308 0 0 35 13 22 34 0 8 0 mcl16k 16384 32 0 0 4 2 2 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 21 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 197 0 0 22 2 20 22 0 8 0 mtagpl 80 49 0 0 1 0 1 1 0 8 0 mbufpl 256 929 0 0 51 0 51 51 0 8 0 bufpl 256 15869 0 8821 441 0 441 441 0 8 0 anonpl 16 367786 0 349840 153 64 89 96 0 124 6 amapchunkpl 152 27874 0 27735 58 47 11 20 0 158 3 amappl16 192 15785 0 14673 149 85 64 68 0 8 7 amappl15 184 817 0 816 1 0 1 1 0 8 0 amappl14 176 321 0 320 1 0 1 1 0 8 0 amappl13 168 211 0 209 4 3 1 1 0 8 0 amappl12 160 43 0 41 2 1 1 1 0 8 0 amappl11 152 737 0 720 1 0 1 1 0 8 0 amappl10 144 391 0 385 1 0 1 1 0 8 0 amappl9 136 874 0 866 1 0 1 1 0 8 0 amappl8 128 441 0 399 2 0 2 2 0 8 0 amappl7 120 477 0 467 1 0 1 1 0 8 0 amappl6 112 729 0 712 1 0 1 1 0 8 0 amappl5 104 675 0 662 1 0 1 1 0 8 0 amappl4 96 3064 0 3031 2 1 1 2 0 8 0 amappl3 88 590 0 584 1 0 1 1 0 8 0 amappl2 80 20522 0 20440 3 0 3 3 0 8 0 amappl1 72 71646 0 71183 25 15 10 20 0 8 0 amappl 80 9663 0 9605 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 64 130 0 1 3 0 3 3 0 8 0 uaddrrnd 24 2751 0 2703 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2751 0 2703 1 0 1 1 0 8 0 vmmpekpl 168 28318 0 28279 3 0 3 3 0 8 0 vmmpepl 168 361410 0 359010 316 173 143 148 0 357 34 vmsppl 368 2718 0 2702 2 0 2 2 0 8 0 pdppl 4096 5509 0 5446 10 2 8 9 0 8 0 pvpl 32 985938 0 965373 319 111 208 219 0 265 23 pmappl 232 2750 0 2712 3 0 3 3 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 732 0 62 20 0 20 20 0 8 0