uvm_fault(0xffffffff822eda28, 0xffff8000019ab002, 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(0xffffffff822eda28, 0xffff8000019ab002, 0, 1) -> e rtable_satoplen(21,ffff8000019aaf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c475a0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff8000019aaf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff8000019aaf09,ffff8000019aaf59,ffff8000019aaf11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff8000019aaf00,ffff800020c47690,ffff800020c47698,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd8074d35200,fffffd806cf91610,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806cf91610,9,fffffd8074d35200,0,0,ffff800020b8b9e0) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806cf91610,0,ffff800020c47958,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b8b9e0,4,ffff800020c47a18,0,ffff800020c47ae0) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b8b9e0,ffff800020c47af8,ffff800020c47ae0) at sys_sendto+0x92 syscall(ffff800020c47b90) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c47b90) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,dd2d7d1a010) at Xsyscall+0x128 end of kernel end trace frame: 0xdd5355e5400, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c47500 rbx 0xffffffffffffff5a rdx 0xffff8000019aaf5d rcx 0xffff8000019ab003 rax 0xffff8000019ab003 r8 0x21 r9 0x1 r10 0x4 r11 0x21866b499ca5a9d r12 0 r13 0xffff8000019ab003 r14 0xffffffff821ee000 mplsdomain r15 0x4 rip 0xffffffff81847d60 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c474b0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=126672 stat=onproc flags process=0 proc=4000000 pri=64, usrpri=64, nice=20 forw=0xffffffffffffffff, list=0xffff800020b8b080,0xffff800020b8b798 process=0xffff800020b7c6a8 user=0xffff800020c42000, vmspace=0xfffffd807effd168 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56974 74450 21588 0 2 0 syz-executor.1 56974 114574 21588 0 2 0x4000000 syz-executor.1 7302 346358 28068 0 2 0 syz-executor.0 * 7302 126672 28068 0 7 0x4000000 syz-executor.0 21702 262905 0 0 3 0x14200 bored sosplice 21588 50245 54836 0 3 0x82 nanosleep syz-executor.1 28068 346735 54836 0 3 0x82 nanosleep syz-executor.0 54836 396376 51361 0 3 0x82 thrsleep syz-fuzzer 54836 344378 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 236486 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 460089 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 326462 51361 0 3 0x4000082 kqread syz-fuzzer 54836 332027 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 12114 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 18502 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 98375 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 20637 51361 0 3 0x4000082 thrsleep syz-fuzzer 54836 233929 51361 0 3 0x4000082 thrsleep syz-fuzzer 51361 440078 53730 0 3 0x10008a pause ksh 53730 295526 22775 0 3 0x92 select sshd 86763 39414 1 0 3 0x100083 ttyin getty 22775 363899 1 0 3 0x80 select sshd 62902 295178 27482 74 3 0x100092 bpf pflogd 27482 43726 1 0 3 0x80 netio pflogd 30051 20050 84963 73 7 0x100090 syslogd 84963 168007 1 0 3 0x100082 netio syslogd 49910 469374 1 77 3 0x100090 poll dhclient 33713 89195 1 0 3 0x80 poll dhclient 12571 473310 0 0 2 0x14200 zerothread 89235 314490 0 0 3 0x14200 aiodoned aiodoned 82682 399752 0 0 3 0x14200 syncer update 70349 303931 0 0 3 0x14200 cleaner cleaner 10892 227563 0 0 3 0x14200 reaper reaper 1064 382311 0 0 3 0x14200 pgdaemon pagedaemon 74586 273490 0 0 3 0x14200 bored crynlk 88873 315160 0 0 3 0x14200 bored crypto 22005 495319 0 0 3 0x40014200 acpi0 acpi0 39327 123214 0 0 3 0x40014200 idle1 49646 189406 0 0 3 0x14200 bored softnet 16252 267837 0 0 3 0x14200 bored systqmp 63900 54512 0 0 3 0x14200 bored systq 8031 358988 0 0 3 0x40014200 bored softclock 40157 408897 0 0 3 0x40014200 idle0 33917 261120 0 0 3 0x14200 bored smr 1 455508 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 7302 (syz-executor.0) thread 0xffff800020b8b9e0 (126672) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823688c8) 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 9527 6416K 6424K 78643K 10857 0 0 pcb 27 9K 11K 78643K 298 0 0 rtable 101 4K 4K 78643K 380 0 0 ifaddr 62 14K 14K 78643K 167 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1473 0 0 iov 0 0K 24K 78643K 72 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1199 75K 76K 78643K 1471 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 7 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 61 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 21K 78643K 510 0 0 sigio 0 0K 0K 78643K 10 0 0 proc 54 51K 83K 78643K 377 0 0 subproc 64 65538K 67586K 78643K 68 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 72 0 0 in_multi 33 2K 2K 78643K 49 0 0 ether_multi 1 0K 0K 78643K 2 0 0 mrt 0 0K 0K 78643K 8 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 217 0 0 pfkey data 0 0K 0K 78643K 1 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 2409 0 0 UVM aobj 18 2K 2K 78643K 20 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 26 0 0 NDP 13 0K 0K 78643K 45 0 0 temp 179 2379K 2443K 78643K 4552 0 0 kqueue 0 0K 0K 78643K 3 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 4 0 0 1 0 1 1 0 8 0 inpcbpl 280 367 0 360 1 0 1 1 0 8 0 plimitpl 152 26 0 18 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 45 0 5 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 544 157 0 153 1 0 1 1 0 8 0 rttmr 72 6 0 6 1 1 0 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 20 0 20 7 6 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 23 0 14 1 0 1 1 0 8 0 pfstkey 112 23 0 14 1 0 1 1 0 8 0 pfstate 328 23 0 14 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 256 185 0 0 12 0 12 12 0 8 0 art_table 32 186 0 0 2 0 2 2 0 8 0 art_node 16 44 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semapl 112 59 0 49 1 0 1 1 0 8 0 shmpl 112 18 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2364 0 949 46 0 46 46 0 8 0 ffsino 272 2364 0 949 95 0 95 95 0 8 0 nchpl 144 3271 0 1643 61 0 61 61 0 8 0 uvmvnodes 72 2455 0 0 45 0 45 45 0 8 0 vnodes 200 2455 0 0 130 0 130 130 0 8 0 namei 1024 9043 0 9043 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 3 0 3 2 2 0 1 0 8 0 scxspl 192 9906 0 9906 12 10 2 6 0 8 2 sigapl 432 706 0 690 2 0 2 2 0 8 0 futexpl 56 9844 0 9844 1 0 1 1 0 8 1 knotepl 112 169 0 142 2 1 1 2 0 8 0 kqueuepl 104 131 0 129 1 0 1 1 0 8 0 pipepl 112 448 0 429 3 2 1 2 0 8 0 fdescpl 488 707 0 690 3 0 3 3 0 8 0 filepl 152 4022 0 3921 6 1 5 6 0 8 1 lockfpl 104 147 0 147 7 6 1 1 0 8 1 lockfspl 32 89 0 89 7 6 1 1 0 8 1 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 796 0 787 1 0 1 1 0 8 0 zombiepl 144 690 0 690 2 1 1 1 0 8 1 processpl 840 723 0 690 4 0 4 4 0 8 0 procpl 600 1732 0 1687 5 1 4 5 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 10 0 10 2 2 0 1 0 8 0 sockpl 384 604 0 583 4 1 3 4 0 8 0 mcl64k 65536 258 0 0 33 10 23 33 0 8 1 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 123 0 0 15 1 14 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 377 0 0 20 0 20 20 0 8 0 bufpl 256 6911 0 1048 367 0 367 367 0 8 0 anonpl 16 100053 0 91020 97 44 53 53 0 125 15 amapchunkpl 152 3785 0 3699 20 16 4 9 0 158 0 amappl16 192 4328 0 3849 83 51 32 37 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 260 0 252 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 243 0 240 2 1 1 1 0 8 0 amappl11 152 211 0 198 1 0 1 1 0 8 0 amappl10 144 330 0 324 1 0 1 1 0 8 0 amappl9 136 356 0 352 1 0 1 1 0 8 0 amappl8 128 147 0 125 1 0 1 1 0 8 0 amappl7 120 32 0 27 1 0 1 1 0 8 0 amappl6 112 291 0 283 1 0 1 1 0 8 0 amappl5 104 134 0 120 1 0 1 1 0 8 0 amappl4 96 573 0 548 2 1 1 2 0 8 0 amappl3 88 153 0 145 1 0 1 1 0 8 0 amappl2 80 5351 0 5285 2 0 2 2 0 8 0 amappl1 72 24853 0 24392 24 14 10 19 0 8 0 amappl 72 1973 0 1938 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 19 0 2 1 0 1 1 0 8 0 uaddrrnd 24 707 0 690 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 707 0 690 1 0 1 1 0 8 0 vmmpekpl 168 9437 0 9416 3 1 2 2 0 8 0 vmmpepl 168 82399 0 80824 123 47 76 79 0 357 7 vmsppl 360 706 0 690 2 0 2 2 0 8 0 pdppl 4096 1422 0 1380 6 0 6 6 0 8 0 pvpl 32 272317 0 260030 209 73 136 137 0 265 36 pmappl 224 706 0 690 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 563 0 15 16 0 16 16 0 8 0