uvm_fault(0xffffffff822f42f8, 0xffff8000029af01a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff822f42f8, 0xffff8000029af01a, 0, 1) -> e rtable_satoplen(2,ffff8000029aef22) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c47040, count: 0 ddb{1}> trace rtable_satoplen(2,ffff8000029aef22) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff8000029aef02,ffff8000029aef22,ffff8000029aef0a,12) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff8000029aef00,ffff800020c47130,ffff800020c47138,12,0) at rtm_output+0xa4 sys/net/rtsock.c:895 route_output(fffffd807e3fbf00,fffffd8067d09628,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd8067d09628,9,fffffd807e3fbf00,0,0,ffff800020b399e0) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd8067d09628,0,ffff800020c473f8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b399e0,4,ffff800020c474b8,0,ffff800020c47580) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b399e0,ffff800020c47598,ffff800020c47580) at sys_sendto+0x92 syscall(ffff800020c47630) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c47630) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,5e300bfc010) at Xsyscall+0x128 end of kernel end trace frame: 0x5e55c1733c0, count: -10 ddb{1}> show registers rdi 0 rsi 0xf9 rbp 0xffff800020c46fa0 rbx 0xffffffffffffff0b rdx 0xffff8000029aef26 rcx 0xffff8000029af01b rax 0xffff8000029af01b r8 0x12 r9 0x1 r10 0x4 r11 0xd20446b904fa99aa r12 0 r13 0xffff8000029af01b r14 0xffffffff821b7e28 inetdomain r15 0x4 rip 0xffffffff81999c90 rtable_satoplen+0x150 cs 0x8 rflags 0x10293 __ALIGN_SIZE+0xf293 rsp 0xffff800020c46f50 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=8930 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b39788,0xffffffff82361320 process=0xffff800020b8d080 user=0xffff800020c42000, vmspace=0xfffffd807f00b438 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26730 345652 65899 0 7 0 syz-executor.1 *26730 8930 65899 0 7 0x4000000 syz-executor.1 26466 14534 0 0 3 0x14200 bored sosplice 21283 140482 71691 0 3 0x82 nanosleep syz-executor.0 65899 154215 71691 0 3 0x82 nanosleep syz-executor.1 71691 25196 41097 0 3 0x82 thrsleep syz-fuzzer 71691 337670 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 301725 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 26121 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 277679 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 169973 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 389485 41097 0 3 0x4000082 kqread syz-fuzzer 71691 288016 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 47502 41097 0 3 0x4000082 thrsleep syz-fuzzer 71691 178333 41097 0 3 0x4000082 thrsleep syz-fuzzer 41097 133643 93259 0 3 0x10008a pause ksh 93259 151642 27547 0 3 0x92 select sshd 77726 58086 1 0 3 0x100083 ttyin getty 27547 450022 1 0 3 0x80 select sshd 6304 445526 26733 74 3 0x100092 bpf pflogd 26733 195267 1 0 3 0x80 netio pflogd 47029 429960 3780 73 2 0x100090 syslogd 3780 511545 1 0 3 0x100082 netio syslogd 27994 312455 1 77 3 0x100090 poll dhclient 57431 329172 1 0 3 0x80 poll dhclient 54377 461366 0 0 3 0x14200 pgzero zerothread 72083 158419 0 0 3 0x14200 aiodoned aiodoned 13350 368481 0 0 3 0x14200 syncer update 86718 198494 0 0 3 0x14200 cleaner cleaner 94973 318359 0 0 3 0x14200 reaper reaper 60783 171955 0 0 3 0x14200 pgdaemon pagedaemon 35134 336573 0 0 3 0x14200 bored crynlk 37088 290163 0 0 3 0x14200 bored crypto 70200 161307 0 0 3 0x40014200 acpi0 acpi0 57289 53120 0 0 3 0x40014200 idle1 51865 510389 0 0 3 0x14200 bored softnet 85696 110845 0 0 3 0x14200 bored systqmp 73131 457496 0 0 3 0x14200 bored systq 39744 414502 0 0 3 0x40014200 bored softclock 60799 106920 0 0 3 0x40014200 idle0 34819 321315 0 0 3 0x14200 bored smr 1 471702 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 26730 (syz-executor.1) thread 0xffff800020b399e0 (8930) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8237aa40) locked @ /syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/trap.c:161 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9525 6423K 6431K 78643K 10727 0 0 pcb 27 9K 11K 78643K 395 0 0 rtable 101 4K 4K 78643K 312 0 0 ifaddr 61 13K 13K 78643K 97 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1476 0 0 iov 0 0K 16K 78643K 86 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1195 75K 75K 78643K 1397 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 8 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 97 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 508 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 54 51K 71K 78643K 433 0 0 subproc 64 65538K 67586K 78643K 140 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 73 0 0 in_multi 33 2K 2K 78643K 79 0 0 ether_multi 1 0K 0K 78643K 8 0 0 mrt 0 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 239 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 82 20K 29K 78643K 2493 0 0 UVM aobj 37 2K 2K 78643K 39 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 16 0 0 NDP 13 0K 0K 78643K 29 0 0 temp 179 2379K 2445K 78643K 4575 0 0 kqueue 0 0K 0K 78643K 1 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 2 1 0 1 1 0 8 0 inpcbpl 280 326 0 319 1 0 1 1 0 8 0 plimitpl 152 39 0 31 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 61 0 21 2 0 2 2 0 8 0 syncache 264 4 0 4 2 2 0 1 0 8 0 tcpcb 544 122 0 118 1 0 1 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 ppxss 1128 4 0 4 2 2 0 1 0 8 0 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 18 0 10 1 0 1 1 0 8 0 pfstkey 112 18 0 10 1 0 1 1 0 8 0 pfstate 328 18 0 10 1 0 1 1 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 256 266 0 81 12 0 12 12 0 8 0 art_table 32 267 0 81 2 0 2 2 0 8 0 art_node 16 58 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 13 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 93 0 83 1 0 1 1 0 8 0 shmpl 112 37 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2236 0 804 47 0 47 47 0 8 0 ffsino 272 2236 0 804 96 0 96 96 0 8 0 nchpl 144 3173 0 1533 61 0 61 61 0 8 0 uvmvnodes 72 2333 0 0 43 0 43 43 0 8 0 vnodes 200 2333 0 0 123 0 123 123 0 8 0 namei 1024 8971 0 8971 4 3 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 8882 0 8882 13 12 1 6 0 8 1 sigapl 432 701 0 686 2 0 2 2 0 8 0 futexpl 56 6200 0 6200 2 1 1 1 0 8 1 knotepl 112 184 0 165 1 0 1 1 0 8 0 kqueuepl 104 140 0 138 1 0 1 1 0 8 0 pipepl 112 492 0 473 5 4 1 2 0 8 0 fdescpl 488 702 0 686 3 0 3 3 0 8 0 filepl 152 4142 0 4041 6 1 5 6 0 8 1 lockfpl 104 154 0 154 3 2 1 1 0 8 1 lockfspl 32 159 0 159 3 2 1 1 0 8 1 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 649 0 640 1 0 1 1 0 8 0 zombiepl 144 686 0 685 4 3 1 1 0 8 0 processpl 840 718 0 685 4 0 4 4 0 8 0 procpl 600 1779 0 1736 4 0 4 4 0 8 0 srpgc 64 12 0 12 2 2 0 1 0 8 0 sosppl 128 4 0 4 1 0 1 1 0 8 1 sockpl 384 654 0 633 6 3 3 4 0 8 0 mcl64k 65536 257 0 0 33 0 33 33 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 141 0 0 16 0 16 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 388 0 0 21 0 21 21 0 8 0 bufpl 256 6844 0 1143 357 0 357 357 0 8 0 anonpl 16 86822 0 77883 62 9 53 53 0 125 16 amapchunkpl 152 3875 0 3792 11 6 5 9 0 158 0 amappl16 192 3269 0 2797 50 18 32 36 0 8 8 amappl15 184 212 0 208 1 0 1 1 0 8 0 amappl14 176 27 0 24 3 2 1 1 0 8 0 amappl13 168 645 0 638 1 0 1 1 0 8 0 amappl12 160 23 0 20 2 1 1 1 0 8 0 amappl11 152 25 0 10 1 0 1 1 0 8 0 amappl10 144 67 0 64 1 0 1 1 0 8 0 amappl9 136 595 0 591 1 0 1 1 0 8 0 amappl8 128 147 0 132 1 0 1 1 0 8 0 amappl7 120 35 0 30 1 0 1 1 0 8 0 amappl6 112 60 0 52 1 0 1 1 0 8 0 amappl5 104 121 0 106 1 0 1 1 0 8 0 amappl4 96 954 0 923 2 1 1 2 0 8 0 amappl3 88 139 0 134 1 0 1 1 0 8 0 amappl2 80 5477 0 5421 2 0 2 2 0 8 0 amappl1 72 24820 0 24377 25 15 10 20 0 8 0 amappl 72 2033 0 1999 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 38 0 2 1 0 1 1 0 8 0 uaddrrnd 24 702 0 686 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 702 0 686 1 0 1 1 0 8 0 vmmpekpl 168 9665 0 9641 2 0 2 2 0 8 0 vmmpepl 168 82197 0 80718 103 26 77 80 0 357 9 vmsppl 360 701 0 686 2 0 2 2 0 8 0 pdppl 4096 1412 0 1372 6 0 6 6 0 8 0 pvpl 32 250326 0 238127 161 25 136 136 0 265 37 pmappl 224 701 0 686 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 558 0 6 16 0 16 16 0 8 0