uvm_fault(0xffffffff8223d158, 0xffff800003db5002, 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(0xffffffff8223d158, 0xffff800003db5002, 0, 1) -> e rtable_satoplen(21,ffff800003db4f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c575f0, count: 0 ddb{0}> trace rtable_satoplen(21,ffff800003db4f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800003db4f09,ffff800003db4f59,ffff800003db4f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800003db4f00,ffff800020c576e0,ffff800020c576e8,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806743af00,fffffd8066b68318,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd8066b68318,9,fffffd806743af00,0,0,ffff800020b392d8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd8066b68318,0,ffff800020c579a8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b392d8,5,ffff800020c57a68,0,ffff800020c57b30) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b392d8,ffff800020c57b48,ffff800020c57b30) at sys_sendto+0x92 syscall(ffff800020c57be0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c57be0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,e497b4ea010) at Xsyscall+0x128 end of kernel end trace frame: 0xe4c27eb3da0, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c57550 rbx 0xffffffffffffff5a rdx 0xffff800003db4f5d rcx 0xffff800003db5003 rax 0xffff800003db5003 r8 0x21 r9 0x1 r10 0x4 r11 0x1fc4c2c4a5794f61 r12 0 r13 0xffff800003db5003 r14 0xffffffff821e1860 mplsdomain r15 0x4 rip 0xffffffff8104f0f0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c57500 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=314100 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020b39530,0xffffffff82393cf8 process=0xffff800020b8c018 user=0xffff800020c52000, vmspace=0xfffffd807effdca8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64811 418630 47584 0 7 0 syz-executor.1 *64811 314100 47584 0 7 0x4000000 syz-executor.1 16746 151107 48526 0 2 0 syz-executor.0 16746 493129 48526 0 3 0x4000080 netio syz-executor.0 48526 459870 62094 0 3 0x82 nanosleep syz-executor.0 47584 233702 62094 0 3 0x82 nanosleep syz-executor.1 91724 61987 1 0 3 0x100083 ttyin getty 47668 433874 0 0 3 0x14200 bored sosplice 62094 176503 16575 0 3 0x82 thrsleep syz-fuzzer 62094 424076 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 223864 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 498187 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 144584 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 447092 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 282106 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 52746 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 337196 16575 0 3 0x4000082 thrsleep syz-fuzzer 62094 187051 16575 0 3 0x4000082 kqread syz-fuzzer 16575 513405 24640 0 3 0x10008a pause ksh 24640 101242 53761 0 3 0x92 select sshd 53761 250589 1 0 3 0x80 select sshd 8683 45383 27650 74 3 0x100092 bpf pflogd 27650 463458 1 0 3 0x80 netio pflogd 40088 339765 74554 73 2 0x100090 syslogd 74554 272505 1 0 3 0x100082 netio syslogd 14411 14111 1 77 3 0x100090 poll dhclient 12596 498878 1 0 3 0x80 poll dhclient 48947 446477 0 0 2 0x14200 zerothread 65979 206835 0 0 3 0x14200 aiodoned aiodoned 71574 177823 0 0 3 0x14200 syncer update 81807 300182 0 0 3 0x14200 cleaner cleaner 15887 515603 0 0 3 0x14200 reaper reaper 40236 379549 0 0 3 0x14200 pgdaemon pagedaemon 31195 243464 0 0 3 0x14200 bored crynlk 82165 188812 0 0 3 0x14200 bored crypto 35913 59309 0 0 3 0x40014200 acpi0 acpi0 57511 433785 0 0 3 0x40014200 idle1 28671 55818 0 0 3 0x14200 bored softnet 2357 217847 0 0 3 0x14200 bored systqmp 16459 422702 0 0 3 0x14200 bored systq 25658 166826 0 0 3 0x40014200 bored softclock 57610 417365 0 0 3 0x40014200 idle0 18290 324335 0 0 3 0x14200 bored smr 1 286036 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 64811 (syz-executor.1) thread 0xffff800020b392d8 (314100) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82349ce8) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9527 6428K 6444K 78643K 10917 0 0 pcb 29 10K 11K 78643K 527 0 0 rtable 101 4K 4K 78643K 524 0 0 ifaddr 62 14K 14K 78643K 180 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1480 0 0 iov 0 0K 24K 78643K 117 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1202 75K 76K 78643K 1768 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 10 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 128 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 21K 78643K 854 0 0 sigio 0 0K 0K 78643K 12 0 0 proc 55 51K 71K 78643K 539 0 0 subproc 64 65538K 67586K 78643K 278 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 106 0 0 in_multi 33 2K 2K 78643K 126 0 0 ether_multi 1 0K 0K 78643K 6 0 0 mrt 0 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 299 0 0 pfkey data 0 0K 0K 78643K 2 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 85 20K 29K 78643K 3663 0 0 UVM aobj 37 2K 2K 78643K 44 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 47 0 0 NDP 13 0K 0K 78643K 56 0 0 temp 177 2375K 2443K 78643K 5792 0 0 kqueue 0 0K 0K 78643K 3 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 10 0 6 1 0 1 1 0 8 0 inpcbpl 280 508 0 501 1 0 1 1 0 8 0 plimitpl 152 65 0 57 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 95 0 55 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 163 0 159 1 0 1 1 0 8 0 nd6 48 16 0 12 1 0 1 1 0 8 0 ppxss 1128 15 0 15 3 3 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 31 0 21 1 0 1 1 0 8 0 pfstkey 112 31 0 21 1 0 1 1 0 8 0 pfstate 328 31 0 21 2 0 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 256 441 0 252 12 0 12 12 0 8 0 art_table 32 442 0 252 2 0 2 2 0 8 0 art_node 16 94 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 35 0 11 1 0 1 1 0 8 0 semapl 112 126 0 116 1 0 1 1 0 8 0 shmpl 112 42 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2951 0 1514 47 0 47 47 0 8 0 ffsino 272 2951 0 1514 96 0 96 96 0 8 0 nchpl 144 4367 0 2713 62 0 62 62 0 8 0 uvmvnodes 72 3164 0 0 58 0 58 58 0 8 0 vnodes 200 3164 0 0 167 0 167 167 0 8 0 namei 1024 13341 0 13341 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 13095 0 13095 10 9 1 6 0 8 1 sigapl 432 1037 0 1021 2 0 2 2 0 8 0 futexpl 56 10212 0 10212 1 0 1 1 0 8 1 knotepl 112 307 0 288 1 0 1 1 0 8 0 kqueuepl 104 196 0 194 1 0 1 1 0 8 0 pipepl 112 760 0 741 4 3 1 2 0 8 0 fdescpl 488 1038 0 1021 3 0 3 3 0 8 0 filepl 152 6614 0 6511 7 2 5 6 0 8 1 lockfpl 104 348 0 348 2 1 1 1 0 8 1 lockfspl 32 398 0 398 2 1 1 1 0 8 1 sessionpl 112 26 0 15 1 0 1 1 0 8 0 pgrppl 48 36 0 25 1 0 1 1 0 8 0 ucredpl 96 1629 0 1620 1 0 1 1 0 8 0 zombiepl 144 1021 0 1021 2 1 1 1 0 8 1 processpl 840 1054 0 1021 4 0 4 4 0 8 0 procpl 600 2850 0 2806 4 0 4 4 0 8 0 srpgc 64 36 0 36 3 2 1 1 0 8 1 sosppl 128 8 0 8 3 2 1 1 0 8 1 sockpl 384 931 0 908 5 2 3 4 0 8 0 mcl64k 65536 229 0 0 29 0 29 29 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 118 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 364 0 0 19 0 19 19 0 8 0 bufpl 256 7542 0 1149 400 0 400 400 0 8 0 anonpl 16 124539 0 116294 70 29 41 52 0 125 4 amapchunkpl 152 6301 0 6209 17 8 9 9 0 158 4 amappl16 192 5474 0 4997 63 38 25 36 0 8 1 amappl15 184 309 0 303 1 0 1 1 0 8 0 amappl14 176 39 0 36 2 1 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 5 0 5 1 1 0 1 0 8 0 amappl11 152 243 0 226 1 0 1 1 0 8 0 amappl10 144 469 0 464 1 0 1 1 0 8 0 amappl9 136 638 0 633 1 0 1 1 0 8 0 amappl8 128 204 0 186 1 0 1 1 0 8 0 amappl7 120 48 0 42 1 0 1 1 0 8 0 amappl6 112 98 0 89 1 0 1 1 0 8 0 amappl5 104 139 0 124 1 0 1 1 0 8 0 amappl4 96 1280 0 1248 2 1 1 2 0 8 0 amappl3 88 167 0 160 1 0 1 1 0 8 0 amappl2 80 8073 0 8006 2 0 2 2 0 8 0 amappl1 72 32260 0 31803 26 16 10 20 0 8 0 amappl 72 3139 0 3102 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 43 0 7 1 0 1 1 0 8 0 uaddrrnd 24 1038 0 1021 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1038 0 1021 1 0 1 1 0 8 0 vmmpekpl 168 13071 0 13046 2 0 2 2 0 8 0 vmmpepl 168 119477 0 117907 115 34 81 81 0 357 10 vmsppl 360 1037 0 1021 2 0 2 2 0 8 0 pdppl 4096 2084 0 2042 6 0 6 6 0 8 0 pvpl 32 378181 0 366567 157 37 120 136 0 265 19 pmappl 224 1037 0 1021 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 591 0 4 17 0 17 17 0 8 0