uvm_fault(0xffffffff8233ebd8, 0xffff800004d8a002, 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(0xffffffff8233ebd8, 0xffff800004d8a002, 0, 1) -> e rtable_satoplen(21,ffff800004d89f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c53030, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800004d89f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004d89f09,ffff800004d89f59,ffff800004d89f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004d89f00,ffff800020c53120,ffff800020c53128,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd807d47e400,fffffd806f6bb780,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f6bb780,9,fffffd807d47e400,0,0,ffff800020b38bd0) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f6bb780,0,ffff800020c533e8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b38bd0,4,ffff800020c534a8,0,ffff800020c53570) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b38bd0,ffff800020c53588,ffff800020c53570) at sys_sendto+0x92 syscall(ffff800020c53620) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c53620) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,4102c599010) at Xsyscall+0x128 end of kernel end trace frame: 0x41230c0eb50, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c52f90 rbx 0xffffffffffffff5a rdx 0xffff800004d89f5d rcx 0xffff800004d8a003 rax 0xffff800004d8a003 r8 0x21 r9 0x1 r10 0x4 r11 0x6022c17c7ba13f19 r12 0 r13 0xffff800004d8a003 r14 0xffffffff821ef8d0 mplsdomain r15 0x4 rip 0xffffffff81195130 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c52f40 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=286555 stat=onproc flags process=10 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b384c8,0xffff800020b39540 process=0xffff800020b3ad30 user=0xffff800020c4e000, vmspace=0xfffffd807effe9d8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 62429 140450 13673 32767 7 0x10 syz-executor.0 *62429 286555 13673 32767 7 0x4000010 syz-executor.0 62429 468109 13673 32767 3 0x4000090 fsleep syz-executor.0 13673 228701 80376 32767 3 0x90 nanosleep syz-executor.0 80376 133253 39517 0 3 0x82 wait syz-executor.0 82301 263300 90705 32767 3 0x90 nanosleep syz-executor.1 90705 152594 39517 0 3 0x82 wait syz-executor.1 22368 370951 0 0 3 0x14200 bored sosplice 39517 197664 36599 0 3 0x82 thrsleep syz-fuzzer 39517 420188 36599 0 3 0x4000082 nanosleep syz-fuzzer 39517 73812 36599 0 3 0x4000082 thrsleep syz-fuzzer 39517 419435 36599 0 3 0x4000082 thrsleep syz-fuzzer 39517 253560 36599 0 3 0x4000082 nanosleep syz-fuzzer 39517 3312 36599 0 3 0x4000082 kqread syz-fuzzer 39517 78334 36599 0 3 0x4000082 thrsleep syz-fuzzer 39517 110686 36599 0 3 0x4000082 thrsleep syz-fuzzer 39517 464437 36599 0 3 0x4000082 thrsleep syz-fuzzer 39517 335932 36599 0 3 0x4000082 thrsleep syz-fuzzer 36599 138136 24759 0 3 0x10008a pause ksh 24759 159228 43836 0 3 0x92 select sshd 68828 188112 1 0 3 0x100083 ttyin getty 43836 358330 1 0 3 0x80 select sshd 16714 171514 25549 73 2 0x100090 syslogd 25549 415197 1 0 3 0x100082 netio syslogd 74597 60195 1 77 3 0x100090 poll dhclient 56162 265299 1 0 3 0x80 poll dhclient 81587 457954 0 0 3 0x14200 pgzero zerothread 25622 362125 0 0 3 0x14200 aiodoned aiodoned 70345 253099 0 0 3 0x14200 syncer update 23332 161275 0 0 3 0x14200 cleaner cleaner 16586 277009 0 0 3 0x14200 reaper reaper 22707 101487 0 0 3 0x14200 pgdaemon pagedaemon 92039 87956 0 0 3 0x14200 bored crynlk 65594 448026 0 0 3 0x14200 bored crypto 79468 143195 0 0 3 0x40014200 acpi0 acpi0 66298 381496 0 0 3 0x40014200 idle1 55372 369578 0 0 3 0x14200 bored softnet 50505 403492 0 0 3 0x14200 bored systqmp 37711 366496 0 0 3 0x14200 bored systq 37906 423422 0 0 3 0x40014200 bored softclock 41160 233392 0 0 3 0x40014200 idle0 35970 471951 0 0 3 0x14200 bored smr 1 160228 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 62429 (syz-executor.0) thread 0xffff800020b38bd0 (286555) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8237ada0) locked @ /syzkaller/managers/setuid/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 9459 6321K 6321K 78643K 10651 0 0 pcb 25 9K 11K 78643K 587 0 0 rtable 98 3K 3K 78643K 859 0 0 ifaddr 35 10K 10K 78643K 164 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 42 0 0 iov 0 0K 24K 78643K 105 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 1801 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 1K 1K 78643K 142 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 7 21K 33K 78643K 959 0 0 sigio 0 0K 0K 78643K 20 0 0 proc 41 38K 58K 78643K 788 0 0 subproc 68 69634K 69634K 78643K 782 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 146 0 0 in_multi 33 2K 2K 78643K 294 0 0 ether_multi 1 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 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 308 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 86 21K 29K 78643K 3865 0 0 UVM aobj 47 3K 3K 78643K 58 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 42 0 0 NDP 7 0K 0K 78643K 72 0 0 temp 121 2378K 2444K 78643K 6408 0 0 kqueue 0 0K 0K 78643K 26 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 25 0 21 1 0 1 1 0 8 0 inpcbpl 280 510 0 503 1 0 1 1 0 8 0 plimitpl 152 107 0 98 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 230 0 190 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 5 0 5 1 1 0 1 0 8 0 tcpcb 544 198 0 194 1 0 1 1 0 8 0 nd6 48 46 0 42 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1056 0 868 12 0 12 12 0 8 0 art_table 32 1057 0 868 2 0 2 2 0 8 0 art_node 16 229 0 195 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 140 0 130 1 0 1 1 0 8 0 shmpl 112 56 0 11 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2602 0 1160 47 0 47 47 0 8 0 ffsino 272 2602 0 1160 97 0 97 97 0 8 0 nchpl 144 4062 0 2441 61 0 61 61 0 8 0 uvmvnodes 72 3002 0 0 55 0 55 55 0 8 0 vnodes 200 3002 0 0 158 0 158 158 0 8 0 namei 1024 13784 0 13784 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 11001 0 11001 13 11 2 6 0 8 2 sigapl 432 1066 0 1051 3 1 2 3 0 8 0 futexpl 56 9301 0 9300 1 0 1 1 0 8 0 knotepl 112 725 0 706 1 0 1 1 0 8 0 kqueuepl 104 252 0 250 1 0 1 1 0 8 0 pipepl 112 852 0 833 5 4 1 2 0 8 0 fdescpl 488 1067 0 1051 3 0 3 3 0 8 0 filepl 152 7361 0 7263 7 2 5 6 0 8 1 lockfpl 104 276 0 276 2 1 1 1 0 8 1 lockfspl 32 705 0 705 2 1 1 1 0 8 1 sessionpl 112 38 0 28 1 0 1 1 0 8 0 pgrppl 48 66 0 56 1 0 1 1 0 8 0 ucredpl 96 2323 0 2314 1 0 1 1 0 8 0 zombiepl 144 1051 0 1050 2 1 1 1 0 8 0 processpl 840 1083 0 1050 4 0 4 4 0 8 0 procpl 600 2855 0 2811 4 0 4 4 0 8 0 srpgc 64 124 0 124 5 4 1 1 0 8 1 sosppl 128 23 0 23 6 5 1 1 0 8 1 sockpl 384 1110 0 1091 4 1 3 4 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 117 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 213 0 0 9 0 9 9 0 8 0 bufpl 256 7260 0 1125 384 0 384 384 0 8 0 anonpl 16 150753 0 145037 68 30 38 45 0 125 6 amapchunkpl 152 7403 0 7319 20 15 5 9 0 158 1 amappl16 192 6007 0 5643 71 49 22 31 0 8 3 amappl15 184 104 0 96 1 0 1 1 0 8 0 amappl14 176 292 0 289 2 1 1 1 0 8 0 amappl13 168 255 0 252 1 0 1 1 0 8 0 amappl12 160 251 0 250 1 0 1 1 0 8 0 amappl11 152 73 0 61 1 0 1 1 0 8 0 amappl10 144 183 0 179 2 1 1 1 0 8 0 amappl9 136 787 0 784 1 0 1 1 0 8 0 amappl8 128 387 0 365 1 0 1 1 0 8 0 amappl7 120 165 0 153 1 0 1 1 0 8 0 amappl6 112 116 0 109 1 0 1 1 0 8 0 amappl5 104 210 0 200 1 0 1 1 0 8 0 amappl4 96 1173 0 1145 2 1 1 2 0 8 0 amappl3 88 531 0 526 1 0 1 1 0 8 0 amappl2 80 7667 0 7611 2 0 2 2 0 8 0 amappl1 72 34837 0 34393 24 15 9 19 0 8 0 amappl 72 3245 0 3210 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 57 0 11 1 0 1 1 0 8 0 uaddrrnd 24 1067 0 1051 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1067 0 1051 1 0 1 1 0 8 0 vmmpekpl 168 12599 0 12574 2 0 2 2 0 8 0 vmmpepl 168 129046 0 127638 101 30 71 76 0 357 6 vmsppl 360 1066 0 1051 2 0 2 2 0 8 0 pdppl 4096 2142 0 2102 6 0 6 6 0 8 1 pvpl 32 391351 0 382378 159 49 110 122 0 265 24 pmappl 224 1066 0 1051 5 4 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 535 0 3 16 0 16 16 0 8 0