uvm_fault(0xffffffff82239538, 0xffff800004d9a002, 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(0xffffffff82239538, 0xffff800004d9a002, 0, 1) -> e rtable_satoplen(21,ffff800004d99f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020bfcb10, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800004d99f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004d99f09,ffff800004d99f59,ffff800004d99f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004d99f00,ffff800020bfcc00,ffff800020bfcc08,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806f7e7b00,fffffd806eae8d88,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806eae8d88,9,fffffd806f7e7b00,0,0,ffff800020b39c38) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806eae8d88,0,ffff800020bfcec8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b39c38,3,ffff800020bfcf88,0,ffff800020bfd050) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b39c38,ffff800020bfd068,ffff800020bfd050) at sys_sendto+0x92 syscall(ffff800020bfd100) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020bfd100) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,4535448a010) at Xsyscall+0x128 end of kernel end trace frame: 0x4555d3450a0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020bfca70 rbx 0xffffffffffffff5a rdx 0xffff800004d99f5d rcx 0xffff800004d9a003 rax 0xffff800004d9a003 r8 0x21 r9 0x1 r10 0x4 r11 0x394a979870a80c40 r12 0 r13 0xffff800004d9a003 r14 0xffffffff821ad160 mplsdomain r15 0x4 rip 0xffffffff81e7d360 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020bfca20 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=212322 stat=onproc flags process=10 proc=4000000 pri=74, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38720,0xffffffff82393108 process=0xffff800020b8c360 user=0xffff800020bf8000, vmspace=0xfffffd806e943b48 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7397 295054 2323 32767 7 0x10 syz-executor.0 * 7397 212322 2323 32767 7 0x4000010 syz-executor.0 5269 478656 67696 32767 3 0x90 nanosleep syz-executor.1 5269 145592 67696 32767 3 0x4000090 ttyin syz-executor.1 5269 64460 67696 32767 3 0x4000090 fsleep syz-executor.1 2323 203219 54505 32767 3 0x90 nanosleep syz-executor.0 54505 60970 98115 0 3 0x82 wait syz-executor.0 67696 228983 55187 32767 3 0x90 nanosleep syz-executor.1 55187 442547 98115 0 3 0x82 wait syz-executor.1 16398 25252 0 0 3 0x14200 bored sosplice 98115 410960 20645 0 3 0x82 thrsleep syz-fuzzer 98115 313765 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 202423 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 242849 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 337315 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 215004 20645 0 3 0x4000082 kqread syz-fuzzer 98115 90142 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 54217 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 392993 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 111899 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 186987 20645 0 3 0x4000082 thrsleep syz-fuzzer 98115 295538 20645 0 3 0x4000082 thrsleep syz-fuzzer 20645 407790 12434 0 3 0x10008a pause ksh 12434 463743 27790 0 3 0x92 select sshd 22498 79386 1 0 3 0x100083 ttyin getty 27790 274699 1 0 3 0x80 select sshd 12502 360132 94698 73 2 0x100090 syslogd 94698 500417 1 0 3 0x100082 netio syslogd 27521 115242 1 77 3 0x100090 poll dhclient 38372 108418 1 0 3 0x80 poll dhclient 1965 271731 0 0 3 0x14200 pgzero zerothread 92430 101369 0 0 3 0x14200 aiodoned aiodoned 59748 417884 0 0 3 0x14200 syncer update 24857 446205 0 0 3 0x14200 cleaner cleaner 4765 411395 0 0 3 0x14200 reaper reaper 94198 362502 0 0 3 0x14200 pgdaemon pagedaemon 48355 85297 0 0 3 0x14200 bored crynlk 713 373452 0 0 3 0x14200 bored crypto 32176 59323 0 0 3 0x40014200 acpi0 acpi0 15193 349782 0 0 3 0x40014200 idle1 5552 335519 0 0 3 0x14200 bored softnet 89310 101618 0 0 3 0x14200 bored systqmp 43720 314140 0 0 3 0x14200 bored systq 57823 86899 0 0 3 0x40014200 bored softclock 69960 180088 0 0 3 0x40014200 idle0 16531 76299 0 0 3 0x14200 bored smr 1 103040 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 7397 (syz-executor.0) thread 0xffff800020b39c38 (212322) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82350b00) locked @ /syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/trap.c:161 #0 witness_lock+0x594 sys/kern/subr_witness.c:1205 #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 9462 6321K 6321K 78643K 10639 0 0 pcb 24 9K 11K 78643K 465 0 0 rtable 98 3K 3K 78643K 752 0 0 ifaddr 34 10K 10K 78643K 144 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 37 0 0 iov 0 0K 16K 78643K 96 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 2016 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 17 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 126 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 8 25K 33K 78643K 1083 0 0 sigio 0 0K 0K 78643K 16 0 0 proc 41 38K 70K 78643K 729 0 0 subproc 68 69634K 69634K 78643K 680 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 139 0 0 in_multi 33 2K 2K 78643K 255 0 0 ether_multi 1 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 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 313 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 96 21K 30K 78643K 4297 0 0 UVM aobj 84 3K 3K 78643K 89 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 51 0 0 NDP 5 0K 0K 78643K 63 0 0 temp 121 2374K 2449K 78643K 6269 0 0 kqueue 0 0K 0K 78643K 13 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 22 0 18 1 0 1 1 0 8 0 inpcbpl 280 523 0 516 1 0 1 1 0 8 0 plimitpl 152 79 0 70 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 203 0 163 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 21 0 21 1 1 0 1 0 8 0 tcpcb 544 182 0 178 1 0 1 1 0 8 0 nd6 48 40 0 36 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 947 0 758 12 0 12 12 0 8 0 art_table 32 948 0 758 2 0 2 2 0 8 0 art_node 16 202 0 168 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 2 1 1 1 0 8 0 semapl 112 124 0 114 1 0 1 1 0 8 0 shmpl 112 87 0 5 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3022 0 1602 46 0 46 46 0 8 0 ffsino 272 3022 0 1602 95 0 95 95 0 8 0 nchpl 144 4683 0 3076 61 0 61 61 0 8 0 uvmvnodes 72 3371 0 0 62 0 62 62 0 8 0 vnodes 200 3371 0 0 178 0 178 178 0 8 0 namei 1024 16894 0 16894 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 11459 0 11459 9 8 1 6 0 8 1 sigapl 432 1197 0 1181 3 1 2 3 0 8 0 futexpl 56 12167 0 12166 1 0 1 1 0 8 0 knotepl 112 597 0 570 3 2 1 2 0 8 0 kqueuepl 104 212 0 210 1 0 1 1 0 8 0 pipepl 112 802 0 783 4 3 1 2 0 8 0 fdescpl 488 1198 0 1181 3 0 3 3 0 8 0 filepl 152 9586 0 9485 8 3 5 7 0 8 1 lockfpl 104 213 0 213 5 4 1 1 0 8 1 lockfspl 32 426 0 426 5 4 1 1 0 8 1 sessionpl 112 35 0 25 1 0 1 1 0 8 0 pgrppl 48 41 0 31 1 0 1 1 0 8 0 ucredpl 96 4684 0 4675 1 0 1 1 0 8 0 zombiepl 144 1181 0 1181 2 1 1 1 0 8 1 processpl 840 1214 0 1181 4 0 4 4 0 8 0 procpl 600 3353 0 3306 7 3 4 5 0 8 0 srpgc 64 108 0 108 5 5 0 1 0 8 0 sosppl 128 31 0 31 7 6 1 1 0 8 1 sockpl 384 989 0 971 4 1 3 4 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 111 0 0 13 1 12 13 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 217 0 0 9 0 9 9 0 8 0 bufpl 256 6879 0 1022 367 0 367 367 0 8 0 anonpl 16 134214 0 127484 70 35 35 41 0 125 7 amapchunkpl 152 8336 0 8244 27 18 9 9 0 158 4 amappl16 192 4656 0 4309 44 25 19 30 0 8 1 amappl15 184 145 0 144 1 0 1 1 0 8 0 amappl14 176 220 0 213 1 0 1 1 0 8 0 amappl13 168 150 0 147 1 0 1 1 0 8 0 amappl12 160 192 0 185 1 0 1 1 0 8 0 amappl11 152 482 0 470 1 0 1 1 0 8 0 amappl10 144 275 0 272 2 1 1 1 0 8 0 amappl9 136 754 0 750 1 0 1 1 0 8 0 amappl8 128 343 0 321 1 0 1 1 0 8 0 amappl7 120 137 0 129 1 0 1 1 0 8 0 amappl6 112 152 0 138 1 0 1 1 0 8 0 amappl5 104 277 0 266 1 0 1 1 0 8 0 amappl4 96 416 0 394 2 1 1 2 0 8 0 amappl3 88 319 0 314 1 0 1 1 0 8 0 amappl2 80 9747 0 9686 2 0 2 2 0 8 0 amappl1 72 38893 0 38427 24 14 10 19 0 8 0 amappl 72 3709 0 3671 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 88 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1198 0 1181 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1198 0 1181 1 0 1 1 0 8 0 vmmpekpl 168 13775 0 13752 2 0 2 2 0 8 0 vmmpepl 168 141719 0 140229 119 49 70 77 0 357 5 vmsppl 360 1197 0 1181 2 0 2 2 0 8 0 pdppl 4096 2404 0 2362 6 0 6 6 0 8 0 pvpl 32 392143 0 382043 166 65 101 118 0 265 16 pmappl 224 1197 0 1181 6 5 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 515 0 4 15 0 15 15 0 8 0