g Ã`ü4g Ã`ü4uvm_fault(0xffffffff822efed8, 0xffff8000035c5002, 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(0xffffffff822efed8, 0xffff8000035c5002, 0, 1) -> e rtable_satoplen(21,ffff8000035c4f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c217a0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff8000035c4f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff8000035c4f09,ffff8000035c4f59,ffff8000035c4f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff8000035c4f00,ffff800020c21890,ffff800020c21898,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd8064496c00,fffffd8066a02da0,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd8066a02da0,9,fffffd8064496c00,0,0,ffff800020b29530) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd8066a02da0,0,ffff800020c21b58,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b29530,3,ffff800020c21c18,0,ffff800020c21ce0) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b29530,ffff800020c21cf8,ffff800020c21ce0) at sys_sendto+0x92 syscall(ffff800020c21d90) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c21d90) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,5610e62a010) at Xsyscall+0x128 end of kernel end trace frame: 0x5630ffcf9b0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c21700 rbx 0xffffffffffffff5a rdx 0xffff8000035c4f5d rcx 0xffff8000035c5003 rax 0xffff8000035c5003 r8 0x21 r9 0x1 r10 0x4 r11 0x1cad5e818e2d9dbb r12 0 r13 0xffff8000035c5003 r14 0xffffffff821bff98 mplsdomain r15 0x4 rip 0xffffffff81c86cd0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c216b0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=276011 stat=onproc flags process=0 proc=4000000 pri=76, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff800020b284c8,0xffffffff823613a0 process=0xffff800020b7d3c8 user=0xffff800020c1c000, vmspace=0xfffffd807f00b5a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33831 136293 94017 0 7 0 syz-executor.1 *33831 276011 94017 0 7 0x4000000 syz-executor.1 38689 54901 37480 0 3 0x80 nanosleep syz-executor.0 38689 82461 37480 0 3 0x4000080 select syz-executor.0 38689 291130 37480 0 3 0x4000080 fsleep syz-executor.0 38689 369665 37480 0 3 0x4000080 fsleep syz-executor.0 37480 397519 28854 0 3 0x82 nanosleep syz-executor.0 94017 249934 28854 0 3 0x82 nanosleep syz-executor.1 1020 236661 0 0 3 0x14200 bored sosplice 28854 488813 3827 0 3 0x82 thrsleep syz-fuzzer 28854 233747 3827 0 3 0x4000082 nanosleep syz-fuzzer 28854 416029 3827 0 3 0x4000082 thrsleep syz-fuzzer 28854 373964 3827 0 3 0x4000082 kqread syz-fuzzer 28854 403636 3827 0 3 0x4000082 thrsleep syz-fuzzer 28854 281563 3827 0 3 0x4000082 thrsleep syz-fuzzer 28854 498424 3827 0 3 0x4000082 thrsleep syz-fuzzer 28854 4117 3827 0 3 0x4000082 thrsleep syz-fuzzer 28854 331268 3827 0 3 0x4000082 thrsleep syz-fuzzer 28854 285512 3827 0 3 0x4000082 thrsleep syz-fuzzer 3827 421517 87304 0 3 0x10008a pause ksh 87304 333191 52808 0 3 0x92 select sshd 59159 315596 1 0 3 0x100083 ttyin getty 52808 188225 1 0 3 0x80 select sshd 89504 109870 14356 74 3 0x100092 bpf pflogd 14356 272493 1 0 3 0x80 netio pflogd 66425 147126 57109 73 2 0x100090 syslogd 57109 508256 1 0 3 0x100082 netio syslogd 89858 442034 1 77 3 0x100090 poll dhclient 34876 440249 1 0 3 0x80 poll dhclient 99966 7079 0 0 3 0x14200 pgzero zerothread 31276 161490 0 0 3 0x14200 aiodoned aiodoned 47665 310683 0 0 3 0x14200 syncer update 69387 375087 0 0 3 0x14200 cleaner cleaner 38961 194726 0 0 3 0x14200 reaper reaper 7799 264034 0 0 3 0x14200 pgdaemon pagedaemon 74206 220731 0 0 3 0x14200 bored crynlk 45457 438248 0 0 3 0x14200 bored crypto 8701 433166 0 0 3 0x40014200 acpi0 acpi0 63352 191371 0 0 3 0x40014200 idle1 59685 12984 0 0 3 0x14200 bored softnet 64293 141888 0 0 3 0x14200 bored systqmp 90043 217839 0 0 3 0x14200 bored systq 90613 159618 0 0 3 0x40014200 bored softclock 81694 116620 0 0 3 0x40014200 idle0 41116 313761 0 0 3 0x14200 bored smr 1 94786 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 33831 (syz-executor.1) thread 0xffff800020b29530 (276011) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82373b28) 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 9531 6417K 6429K 78643K 10858 0 0 pcb 27 9K 11K 78643K 345 0 0 rtable 101 4K 4K 78643K 537 0 0 ifaddr 63 14K 14K 78643K 177 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1485 0 0 iov 0 0K 16K 78643K 93 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1208 76K 76K 78643K 1672 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 0K 78643K 60 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 21K 78643K 641 0 0 sigio 0 0K 0K 78643K 8 0 0 proc 53 50K 71K 78643K 530 0 0 subproc 64 65538K 67586K 78643K 310 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 101 0 0 in_multi 33 2K 2K 78643K 124 0 0 ether_multi 1 0K 0K 78643K 3 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 257 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 91 21K 30K 78643K 2922 0 0 UVM aobj 25 2K 2K 78643K 30 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 34 0 0 NDP 13 0K 0K 78643K 56 0 0 temp 162 2375K 2441K 78643K 5205 0 0 kqueue 0 0K 0K 78643K 11 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 11 0 7 1 0 1 1 0 8 0 inpcbpl 280 359 0 352 1 0 1 1 0 8 0 plimitpl 152 35 0 27 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 104 0 64 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 14 0 14 1 1 0 1 0 8 0 tcpcb 544 118 0 114 1 0 1 1 0 8 0 nd6 48 18 0 14 1 0 1 1 0 8 0 ppxss 1128 16 0 16 4 3 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 29 0 15 1 0 1 1 0 8 0 pfstkey 112 29 0 15 1 0 1 1 0 8 0 pfstate 328 29 0 15 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 256 478 0 286 12 0 12 12 0 8 0 art_table 32 479 0 286 2 0 2 2 0 8 0 art_node 16 103 0 69 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 2 2 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 56 0 46 1 0 1 1 0 8 0 shmpl 112 28 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2559 0 1119 47 0 47 47 0 8 0 ffsino 272 2559 0 1119 97 0 97 97 0 8 0 nchpl 144 3626 0 1970 62 0 62 62 0 8 0 uvmvnodes 72 2779 0 0 51 0 51 51 0 8 0 vnodes 200 2779 0 0 147 0 147 147 0 8 0 namei 1024 10813 0 10813 2 1 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 9363 0 9363 12 11 1 5 0 8 1 sigapl 432 816 0 800 2 0 2 2 0 8 0 futexpl 56 6813 0 6811 1 0 1 1 0 8 0 knotepl 112 334 0 307 4 3 1 2 0 8 0 kqueuepl 104 162 0 160 1 0 1 1 0 8 0 pipepl 112 574 0 551 3 2 1 2 0 8 0 fdescpl 488 817 0 800 3 0 3 3 0 8 0 filepl 152 5017 0 4912 7 2 5 7 0 8 0 lockfpl 104 243 0 243 2 1 1 1 0 8 1 lockfspl 32 306 0 306 2 1 1 1 0 8 1 sessionpl 112 25 0 14 1 0 1 1 0 8 0 pgrppl 48 34 0 23 1 0 1 1 0 8 0 ucredpl 96 1165 0 1156 1 0 1 1 0 8 0 zombiepl 144 800 0 800 2 1 1 1 0 8 1 processpl 840 833 0 800 4 0 4 4 0 8 0 procpl 600 2110 0 2064 4 0 4 4 0 8 0 srpgc 64 42 0 42 2 1 1 1 0 8 1 sosppl 128 6 0 6 2 2 0 1 0 8 0 sockpl 384 641 0 620 5 2 3 4 0 8 0 mcl64k 65536 258 0 0 33 2 31 33 0 8 1 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 112 0 0 13 0 13 13 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 377 0 0 21 0 21 21 0 8 0 bufpl 256 6595 0 1044 347 0 347 347 0 8 0 anonpl 16 95022 0 87234 64 26 38 49 0 125 2 amapchunkpl 152 4876 0 4778 17 8 9 9 0 158 4 amappl16 192 3546 0 3081 46 22 24 36 0 8 0 amappl15 184 76 0 75 1 0 1 1 0 8 0 amappl14 176 159 0 152 1 0 1 1 0 8 0 amappl13 168 216 0 213 1 0 1 1 0 8 0 amappl12 160 263 0 260 2 1 1 1 0 8 0 amappl11 152 298 0 285 1 0 1 1 0 8 0 amappl10 144 338 0 335 1 0 1 1 0 8 0 amappl9 136 443 0 437 1 0 1 1 0 8 0 amappl8 128 304 0 286 1 0 1 1 0 8 0 amappl7 120 131 0 123 1 0 1 1 0 8 0 amappl6 112 192 0 180 1 0 1 1 0 8 0 amappl5 104 158 0 144 1 0 1 1 0 8 0 amappl4 96 319 0 297 1 0 1 1 0 8 0 amappl3 88 172 0 164 1 0 1 1 0 8 0 amappl2 80 6218 0 6152 2 0 2 2 0 8 0 amappl1 72 27334 0 26851 24 14 10 19 0 8 0 amappl 72 2409 0 2369 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 29 0 5 1 0 1 1 0 8 0 uaddrrnd 24 817 0 800 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 817 0 800 1 0 1 1 0 8 0 vmmpekpl 168 10604 0 10581 2 0 2 2 0 8 0 vmmpepl 168 94246 0 92668 107 26 81 84 0 357 12 vmsppl 360 816 0 800 2 0 2 2 0 8 0 pdppl 4096 1642 0 1600 6 0 6 6 0 8 0 pvpl 32 280405 0 269340 167 48 119 138 0 265 23 pmappl 224 816 0 800 4 3 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 543 0 6 16 0 16 16 0 8 0