uvm_fault(0xffffffff8225bcd0, 0xffff800001768002, 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(0xffffffff8225bcd0, 0xffff800001768002, 0, 1) -> e rtable_satoplen(21,ffff800001767f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c2b3a0, count: 0 ddb{0}> trace rtable_satoplen(21,ffff800001767f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800001767f09,ffff800001767f59,ffff800001767f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800001767f00,ffff800020c2b490,ffff800020c2b498,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd807f02b600,fffffd80690dec20,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd80690dec20,9,fffffd807f02b600,0,0,ffff800020b28e28) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd80690dec20,0,ffff800020c2b758,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b28e28,3,ffff800020c2b818,0,ffff800020c2b8e0) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b28e28,ffff800020c2b8f8,ffff800020c2b8e0) at sys_sendto+0x92 syscall(ffff800020c2b990) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c2b990) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,34cbb4cc010) at Xsyscall+0x128 end of kernel end trace frame: 0x34f71f25610, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c2b300 rbx 0xffffffffffffff5a rdx 0xffff800001767f5d rcx 0xffff800001768003 rax 0xffff800001768003 r8 0x21 r9 0x1 r10 0x4 r11 0x50640f754b8ae555 r12 0 r13 0xffff800001768003 r14 0xffffffff821fe058 mplsdomain r15 0x4 rip 0xffffffff81674900 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c2b2b0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=430624 stat=onproc flags process=0 proc=4000000 pri=74, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800020b29c38,0xffffffff823c5f18 process=0xffff800020b7c9f0 user=0xffff800020c26000, vmspace=0xfffffd807f00b2d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64532 459476 49549 0 2 0 syz-executor.0 *64532 430624 49549 0 7 0x4000000 syz-executor.0 60442 413541 61833 0 2 0x480 syz-executor.1 60442 122111 61833 0 3 0x4000080 netcon2 syz-executor.1 60442 80992 61833 0 3 0x4000080 fsleep syz-executor.1 61833 193224 10459 0 3 0x82 nanosleep syz-executor.1 49549 517372 10459 0 3 0x82 nanosleep syz-executor.0 46833 256059 0 0 3 0x14200 bored sosplice 10459 125984 64325 0 3 0x82 thrsleep syz-fuzzer 10459 150235 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 60752 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 458943 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 429240 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 254432 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 112906 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 406834 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 170682 64325 0 3 0x4000082 thrsleep syz-fuzzer 10459 502751 64325 0 3 0x4000082 kqread syz-fuzzer 64325 270344 81955 0 3 0x10008a pause ksh 81955 477543 36568 0 3 0x92 select sshd 16693 361529 1 0 3 0x100083 ttyin getty 36568 41024 1 0 3 0x80 select sshd 21871 119724 59424 74 3 0x100092 bpf pflogd 59424 146138 1 0 3 0x80 netio pflogd 25567 419501 47945 73 7 0x100090 syslogd 47945 378302 1 0 3 0x100082 netio syslogd 69133 250386 1 77 3 0x100090 poll dhclient 72601 250213 1 0 3 0x80 poll dhclient 13432 234177 0 0 3 0x14200 pgzero zerothread 48151 271312 0 0 3 0x14200 aiodoned aiodoned 8951 240904 0 0 3 0x14200 syncer update 53828 276187 0 0 3 0x14200 cleaner cleaner 4773 197408 0 0 3 0x14200 reaper reaper 86443 500904 0 0 3 0x14200 pgdaemon pagedaemon 46432 72281 0 0 3 0x14200 bored crynlk 40927 34464 0 0 3 0x14200 bored crypto 25352 410948 0 0 3 0x40014200 acpi0 acpi0 63424 390562 0 0 3 0x40014200 idle1 72131 38927 0 0 3 0x14200 bored softnet 29172 76692 0 0 3 0x14200 bored systqmp 66002 494778 0 0 3 0x14200 bored systq 9729 282290 0 0 3 0x40014200 bored softclock 82022 242801 0 0 3 0x40014200 idle0 85993 83706 0 0 3 0x14200 bored smr 1 426047 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 64532 (syz-executor.0) thread 0xffff800020b28e28 (430624) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823d2f80) 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 9557 6441K 6449K 78643K 11026 0 0 pcb 26 9K 11K 78643K 699 0 0 rtable 101 4K 4K 78643K 918 0 0 ifaddr 72 15K 15K 78643K 274 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1498 0 0 iov 0 0K 28K 78643K 191 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1189 74K 75K 78643K 2049 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 22 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 184 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 25K 78643K 1305 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 54 51K 83K 78643K 840 0 0 subproc 64 65538K 67586K 78643K 646 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 199 0 0 in_multi 33 2K 2K 78643K 289 0 0 ether_multi 1 0K 0K 78643K 10 0 0 mrt 0 0K 0K 78643K 4 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 381 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 97 21K 30K 78643K 5176 0 0 UVM aobj 41 2K 2K 78643K 51 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 37 0 0 NDP 16 0K 0K 78643K 96 0 0 temp 199 2376K 3015K 78643K 7478 0 0 kqueue 0 0K 0K 78643K 13 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 21 0 17 1 0 1 1 0 8 0 inpcbpl 280 697 0 689 1 0 1 1 0 8 0 plimitpl 152 89 0 81 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 196 0 156 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 273 0 268 1 0 1 1 0 8 0 nd6 48 38 0 34 1 0 1 1 0 8 0 ppxss 1128 21 0 21 6 6 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 49 0 31 1 0 1 1 0 8 0 pfstkey 112 49 0 31 1 0 1 1 0 8 0 pfstate 328 49 0 31 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 256 923 0 732 12 0 12 12 0 8 0 art_table 32 924 0 732 2 0 2 2 0 8 0 art_node 16 193 0 159 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 5 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 182 0 172 1 0 1 1 0 8 0 shmpl 112 49 0 10 3 1 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3609 0 2153 48 0 48 48 0 8 0 ffsino 272 3609 0 2153 98 0 98 98 0 8 0 nchpl 144 5597 0 3948 63 1 62 62 0 8 0 uvmvnodes 72 4027 0 0 74 0 74 74 0 8 0 vnodes 200 4027 0 0 212 0 212 212 0 8 0 namei 1024 17422 0 17422 1 0 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 17133 0 17133 16 15 1 6 0 8 1 sigapl 432 1450 0 1434 3 1 2 3 0 8 0 futexpl 56 14109 0 14108 1 0 1 1 0 8 0 knotepl 112 600 0 573 3 2 1 2 0 8 0 kqueuepl 104 323 0 320 1 0 1 1 0 8 0 pipepl 112 1068 0 1049 3 1 2 2 0 8 1 fdescpl 488 1451 0 1434 3 0 3 3 0 8 0 filepl 152 9004 0 8902 7 2 5 7 0 8 0 lockfpl 104 460 0 460 3 2 1 1 0 8 1 lockfspl 32 506 0 506 3 2 1 1 0 8 1 sessionpl 112 35 0 24 1 0 1 1 0 8 0 pgrppl 48 48 0 37 1 0 1 1 0 8 0 ucredpl 96 1882 0 1873 1 0 1 1 0 8 0 zombiepl 144 1434 0 1434 2 1 1 1 0 8 1 processpl 840 1467 0 1434 4 0 4 4 0 8 0 procpl 600 4149 0 4104 4 0 4 4 0 8 0 srpgc 64 102 0 102 9 9 0 1 0 8 0 sosppl 128 19 0 18 5 4 1 1 0 8 0 sockpl 384 1306 0 1285 6 2 4 4 0 8 1 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 129 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 251 0 0 10 0 10 10 0 8 0 bufpl 256 8637 0 1649 437 0 437 437 0 8 0 anonpl 16 168111 0 159862 87 46 41 51 0 125 5 amapchunkpl 152 9355 0 9250 23 14 9 10 0 158 3 amappl16 192 7182 0 6718 72 47 25 36 0 8 1 amappl15 184 12 0 10 1 0 1 1 0 8 0 amappl14 176 115 0 109 1 0 1 1 0 8 0 amappl13 168 1091 0 1087 1 0 1 1 0 8 0 amappl12 160 60 0 58 3 2 1 1 0 8 0 amappl11 152 283 0 270 1 0 1 1 0 8 0 amappl10 144 439 0 434 1 0 1 1 0 8 0 amappl9 136 394 0 391 1 0 1 1 0 8 0 amappl8 128 319 0 298 1 0 1 1 0 8 0 amappl7 120 841 0 834 1 0 1 1 0 8 0 amappl6 112 88 0 82 1 0 1 1 0 8 0 amappl5 104 160 0 145 1 0 1 1 0 8 0 amappl4 96 584 0 557 2 1 1 2 0 8 0 amappl3 88 189 0 182 1 0 1 1 0 8 0 amappl2 80 12313 0 12244 2 0 2 2 0 8 0 amappl1 72 41409 0 40938 24 14 10 19 0 8 0 amappl 72 4518 0 4477 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 50 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1451 0 1434 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1451 0 1434 1 0 1 1 0 8 0 vmmpekpl 168 16095 0 16070 2 0 2 2 0 8 0 vmmpepl 168 165154 0 163587 130 49 81 83 0 357 11 vmsppl 360 1450 0 1434 2 0 2 2 0 8 0 pdppl 4096 2910 0 2868 6 0 6 6 0 8 0 pvpl 32 474272 0 462733 195 83 112 131 0 265 13 pmappl 224 1450 0 1434 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 593 0 3 17 0 17 17 0 8 0