uvm_fault(0xffffffff8225d700, 0xffff800001784002, 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(0xffffffff8225d700, 0xffff800001784002, 0, 1) -> e rtable_satoplen(21,ffff800001783f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c28d10, count: 0 ddb{0}> trace rtable_satoplen(21,ffff800001783f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800001783f09,ffff800001783f59,ffff800001783f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800001783f00,ffff800020c28e00,ffff800020c28e08,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd806764e700,fffffd806f738a80,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f738a80,9,fffffd806764e700,0,0,ffff800020b9bc38) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f738a80,0,ffff800020c290c8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b9bc38,3,ffff800020c29188,0,ffff800020c29250) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b9bc38,ffff800020c29268,ffff800020c29250) at sys_sendto+0x92 syscall(ffff800020c29300) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c29300) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,51bf66fa010) at Xsyscall+0x128 end of kernel end trace frame: 0x51e567a7ca0, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c28c70 rbx 0xffffffffffffff5a rdx 0xffff800001783f5d rcx 0xffff800001784003 rax 0xffff800001784003 r8 0x21 r9 0x1 r10 0x4 r11 0xa1f95c016413254 r12 0 r13 0xffff800001784003 r14 0xffffffff82199f90 mplsdomain r15 0x4 rip 0xffffffff81036a10 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c28c20 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=336749 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020b9b788,0xffffffff8234ec80 process=0xffff800020b8c018 user=0xffff800020c24000, vmspace=0xfffffd807effd870 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 931 379833 12584 0 2 0 syz-executor.0 * 931 336749 12584 0 7 0x4000000 syz-executor.0 12584 26724 93613 0 3 0x82 nanosleep syz-executor.0 44051 241944 93613 0 2 0x482 syz-executor.1 59043 509482 1 0 3 0x100083 ttyin getty 791 60707 0 0 3 0x14200 bored sosplice 93613 245207 58219 0 3 0x82 thrsleep syz-fuzzer 93613 186166 58219 0 2 0x4000482 syz-fuzzer 93613 174063 58219 0 3 0x4000082 thrsleep syz-fuzzer 93613 358093 58219 0 3 0x4000082 thrsleep syz-fuzzer 93613 330972 58219 0 3 0x4000082 thrsleep syz-fuzzer 93613 452468 58219 0 3 0x4000082 thrsleep syz-fuzzer 93613 190020 58219 0 3 0x4000082 thrsleep syz-fuzzer 93613 73444 58219 0 3 0x4000082 kqread syz-fuzzer 93613 317620 58219 0 3 0x4000082 thrsleep syz-fuzzer 93613 304533 58219 0 3 0x4000082 thrsleep syz-fuzzer 58219 405973 85765 0 3 0x10008a pause ksh 85765 404206 23055 0 3 0x92 select sshd 23055 79169 1 0 3 0x80 select sshd 20816 413495 90516 74 3 0x100092 bpf pflogd 90516 194719 1 0 3 0x80 netio pflogd 47133 498001 16872 73 7 0x100090 syslogd 16872 71639 1 0 3 0x100082 netio syslogd 41197 83102 1 77 3 0x100090 poll dhclient 12616 155632 1 0 3 0x80 poll dhclient 96220 112898 0 0 3 0x14200 pgzero zerothread 84270 387488 0 0 3 0x14200 aiodoned aiodoned 59835 484974 0 0 3 0x14200 syncer update 68295 433244 0 0 3 0x14200 cleaner cleaner 35982 472207 0 0 3 0x14200 reaper reaper 14080 161821 0 0 3 0x14200 pgdaemon pagedaemon 19890 125581 0 0 3 0x14200 bored crynlk 46032 80133 0 0 3 0x14200 bored crypto 13856 140286 0 0 3 0x40014200 acpi0 acpi0 28929 304503 0 0 3 0x40014200 idle1 26828 293205 0 0 3 0x14200 bored softnet 42164 400954 0 0 3 0x14200 bored systqmp 45145 69048 0 0 3 0x14200 bored systq 1083 504894 0 0 3 0x40014200 bored softclock 80782 382610 0 0 3 0x40014200 idle0 59048 229712 0 0 3 0x14200 bored smr 1 96259 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 931 (syz-executor.0) thread 0xffff800020b9bc38 (336749) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823780b8) locked @ /syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/softintr.c:87 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 solock+0x7e sys/kern/uipc_socket2.c:292 #2 sosend+0x586 sys/kern/uipc_socket.c:501 #3 sendit+0x590 sys/kern/uipc_syscalls.c:662 #4 sys_sendto+0x92 #5 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #5 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9573 6447K 6456K 78643K 11727 0 0 pcb 26 9K 11K 78643K 1492 0 0 rtable 101 4K 4K 78643K 1468 0 0 ifaddr 77 16K 17K 78643K 506 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1519 0 0 iov 0 0K 28K 78643K 349 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1197 75K 76K 78643K 2889 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 40 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 402 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 2622 0 0 sigio 0 0K 0K 78643K 59 0 0 proc 54 51K 83K 78643K 1206 0 0 subproc 64 65538K 67586K 78643K 888 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 304 0 0 in_multi 33 2K 2K 78643K 389 0 0 ether_multi 1 0K 0K 78643K 15 0 0 mrt 0 0K 0K 78643K 9 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 527 0 0 pfkey data 0 0K 0K 78643K 6 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 90 21K 29K 78643K 9609 0 0 UVM aobj 130 7K 8K 78643K 146 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 117 0 0 NDP 18 0K 0K 78643K 166 0 0 temp 214 2380K 3020K 78643K 11798 0 0 kqueue 0 0K 0K 78643K 15 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 28 0 24 1 0 1 1 0 8 0 inpcbpl 280 1389 0 1382 1 0 1 1 0 8 0 plimitpl 152 119 0 111 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 260 0 220 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 411 0 407 1 0 1 1 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 52 0 48 1 0 1 1 0 8 0 ppxss 1128 59 0 59 13 12 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 69 0 58 1 0 1 1 0 8 0 pfstkey 112 69 0 58 1 0 1 1 0 8 0 pfstate 328 69 0 58 3 1 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1307 0 1120 14 2 12 14 0 8 0 art_table 32 1308 0 1120 2 0 2 2 0 8 0 art_node 16 258 0 224 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 7 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 398 0 388 1 0 1 1 0 8 0 shmpl 112 144 0 16 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5927 0 4388 50 0 50 50 0 8 0 ffsino 272 5927 0 4388 104 1 103 103 0 8 0 nchpl 144 9815 0 8121 65 1 64 64 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 31064 0 31064 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 9 0 9 6 6 0 1 0 8 0 scxspl 192 36497 0 36497 24 23 1 6 0 8 1 sigapl 432 2752 0 2737 2 0 2 2 0 8 0 futexpl 56 28429 0 28429 2 1 1 1 0 8 1 knotepl 112 1015 0 996 1 0 1 1 0 8 0 kqueuepl 104 664 0 662 1 0 1 1 0 8 0 pipepl 112 1864 0 1845 5 4 1 2 0 8 0 fdescpl 488 2753 0 2737 3 0 3 3 0 8 0 filepl 152 17264 0 17164 8 3 5 7 0 8 1 lockfpl 104 923 0 923 4 3 1 1 0 8 1 lockfspl 32 1053 0 1053 4 3 1 1 0 8 1 sessionpl 112 45 0 34 1 0 1 1 0 8 0 pgrppl 48 79 0 68 1 0 1 1 0 8 0 ucredpl 96 3449 0 3440 1 0 1 1 0 8 0 zombiepl 144 2737 0 2736 3 2 1 1 0 8 0 processpl 840 2769 0 2736 4 0 4 4 0 8 0 procpl 600 8277 0 8234 4 0 4 4 0 8 0 srpgc 64 136 0 136 9 8 1 1 0 8 1 sosppl 128 35 0 35 9 9 0 1 0 8 0 sockpl 384 2646 0 2626 9 6 3 4 0 8 1 mcl64k 65536 393 0 0 47 14 33 35 0 8 1 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 121 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 524 0 0 20 0 20 20 0 8 0 bufpl 256 12243 0 5219 440 0 440 440 0 8 0 anonpl 16 345142 0 337198 122 72 50 55 0 125 9 amapchunkpl 152 18402 0 18315 46 41 5 11 0 158 0 amappl16 192 16725 0 16223 142 108 34 38 0 8 7 amappl15 184 767 0 761 1 0 1 1 0 8 0 amappl14 176 300 0 294 2 1 1 1 0 8 0 amappl13 168 254 0 251 1 0 1 1 0 8 0 amappl12 160 196 0 192 1 0 1 1 0 8 0 amappl11 152 633 0 616 1 0 1 1 0 8 0 amappl10 144 377 0 375 1 0 1 1 0 8 0 amappl9 136 867 0 864 1 0 1 1 0 8 0 amappl8 128 493 0 471 1 0 1 1 0 8 0 amappl7 120 392 0 385 1 0 1 1 0 8 0 amappl6 112 221 0 210 1 0 1 1 0 8 0 amappl5 104 221 0 206 1 0 1 1 0 8 0 amappl4 96 2906 0 2874 2 1 1 2 0 8 0 amappl3 88 607 0 600 1 0 1 1 0 8 0 amappl2 80 23339 0 23282 2 0 2 2 0 8 0 amappl1 72 70204 0 69757 26 16 10 20 0 8 0 amappl 72 8761 0 8726 1 0 1 1 0 75 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 dma64 64 259 0 259 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 64 145 0 16 3 0 3 3 0 8 0 uaddrrnd 24 2753 0 2737 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2753 0 2737 1 0 1 1 0 8 0 vmmpekpl 168 28337 0 28315 2 0 2 2 0 8 0 vmmpepl 168 311764 0 310243 175 90 85 85 0 357 14 vmsppl 360 2752 0 2737 2 0 2 2 0 8 0 pdppl 4096 5514 0 5474 6 0 6 6 0 8 0 pvpl 32 910653 0 899431 255 122 133 145 0 265 28 pmappl 224 2752 0 2737 3 2 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 663 0 22 19 0 19 19 0 8 0