uvm_fault(0xffffffff82316078, 0xffff800004d82002, 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(0xffffffff82316078, 0xffff800004d82002, 0, 1) -> e rtable_satoplen(21,ffff800004d81f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c5d0c0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800004d81f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004d81f09,ffff800004d81f59,ffff800004d81f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004d81f00,ffff800020c5d1b0,ffff800020c5d1b8,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806f1fc200,fffffd807e959910,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd807e959910,9,fffffd806f1fc200,0,0,ffff800020b159d0) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd807e959910,0,ffff800020c5d478,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b159d0,3,ffff800020c5d538,0,ffff800020c5d600) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b159d0,ffff800020c5d618,ffff800020c5d600) at sys_sendto+0x92 syscall(ffff800020c5d6b0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c5d6b0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,bb7e39c6010) at Xsyscall+0x128 end of kernel end trace frame: 0xbba1b4ab1e0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c5d020 rbx 0xffffffffffffff5a rdx 0xffff800004d81f5d rcx 0xffff800004d82003 rax 0xffff800004d82003 r8 0x21 r9 0x1 r10 0x4 r11 0x3f1723e03e32612d r12 0 r13 0xffff800004d82003 r14 0xffffffff821d4d38 mplsdomain r15 0x4 rip 0xffffffff817c8070 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c5cfd0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=210632 stat=onproc flags process=10 proc=4000000 pri=64, usrpri=64, nice=20 forw=0xffffffffffffffff, list=0xffff800020b144b8,0xffffffff823853b0 process=0xffff800020b3ba50 user=0xffff800020c58000, vmspace=0xfffffd807effd2d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45622 91473 67391 32767 2 0x10 syz-executor.1 *45622 210632 67391 32767 7 0x4000010 syz-executor.1 17162 139496 7531 32767 7 0x10 syz-executor.0 17162 124991 7531 32767 3 0x4000090 fsleep syz-executor.0 17162 510543 7531 32767 3 0x4000090 fsleep syz-executor.0 17162 512387 7531 32767 3 0x4000090 fsleep syz-executor.0 17162 292117 7531 32767 2 0x4000010 syz-executor.0 67391 314755 46036 32767 3 0x90 nanosleep syz-executor.1 46036 125629 37695 0 3 0x82 wait syz-executor.1 7531 360828 41788 32767 3 0x90 nanosleep syz-executor.0 41788 190211 37695 0 3 0x82 wait syz-executor.0 30116 237958 0 0 3 0x14200 bored sosplice 37695 123581 46876 0 3 0x82 thrsleep syz-fuzzer 37695 365654 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 180748 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 195974 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 176624 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 320101 46876 0 3 0x4000082 kqread syz-fuzzer 37695 317720 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 70467 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 170065 46876 0 3 0x4000082 thrsleep syz-fuzzer 37695 426038 46876 0 3 0x4000082 thrsleep syz-fuzzer 46876 24496 54639 0 3 0x10008a pause ksh 54639 323441 36706 0 3 0x92 select sshd 72559 350892 1 0 3 0x100083 ttyin getty 36706 336690 1 0 3 0x80 select sshd 95769 260826 34883 73 2 0x100090 syslogd 34883 390882 1 0 3 0x100082 netio syslogd 12781 515539 1 77 3 0x100090 poll dhclient 89803 422928 1 0 3 0x80 poll dhclient 38765 393536 0 0 2 0x14200 zerothread 76506 396634 0 0 3 0x14200 aiodoned aiodoned 25582 112022 0 0 3 0x14200 syncer update 29374 287781 0 0 3 0x14200 cleaner cleaner 54241 501558 0 0 3 0x14200 reaper reaper 70790 109968 0 0 3 0x14200 pgdaemon pagedaemon 6357 29292 0 0 3 0x14200 bored crynlk 8702 354113 0 0 3 0x14200 bored crypto 42277 259497 0 0 3 0x40014200 acpi0 acpi0 87946 449700 0 0 3 0x40014200 idle1 61546 82575 0 0 3 0x14200 bored softnet 25406 10992 0 0 3 0x14200 bored systqmp 30805 268211 0 0 3 0x14200 bored systq 49307 338236 0 0 3 0x40014200 bored softclock 23783 22185 0 0 3 0x40014200 idle0 38098 200899 0 0 3 0x14200 bored smr 1 6029 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 45622 (syz-executor.1) thread 0xffff800020b159d0 (210632) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82389260) 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 10566 0 0 pcb 26 9K 10K 78643K 144 0 0 rtable 98 3K 3K 78643K 296 0 0 ifaddr 35 10K 10K 78643K 61 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 19 0 0 iov 0 0K 16K 78643K 16 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 1314 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 6 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 1K 1K 78643K 22 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 8 25K 29K 78643K 201 0 0 proc 41 38K 58K 78643K 353 0 0 subproc 68 69634K 69634K 78643K 204 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 14 0 0 in_multi 33 2K 2K 78643K 86 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 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 190 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 81 20K 20K 78643K 1374 0 0 UVM aobj 12 2K 2K 78643K 14 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 2 0 0 NDP 5 0K 0K 78643K 21 0 0 temp 91 2366K 2432K 78643K 3546 0 0 kqueue 0 0K 0K 78643K 1 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 8 0 4 1 0 1 1 0 8 0 inpcbpl 280 123 0 114 1 0 1 1 0 8 0 plimitpl 152 32 0 23 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 77 0 37 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 40 0 40 1 1 0 1 0 8 0 tcpcb 544 44 0 38 1 0 1 1 0 8 0 nd6 48 12 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 355 0 171 12 0 12 12 0 8 0 art_table 32 356 0 171 2 0 2 2 0 8 0 art_node 16 76 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 5 2 1 1 1 0 8 1 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 12 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1650 0 237 46 0 46 46 0 8 0 ffsino 272 1650 0 237 95 0 95 95 0 8 0 nchpl 144 2101 0 492 61 0 61 61 0 8 0 uvmvnodes 72 1761 0 0 33 0 33 33 0 8 0 vnodes 200 1761 0 0 93 0 93 93 0 8 0 namei 1024 5660 0 5660 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 5512 0 5512 6 5 1 5 0 8 1 sigapl 432 359 0 343 2 0 2 2 0 8 0 futexpl 56 1787 0 1784 1 0 1 1 0 8 0 knotepl 112 170 0 151 1 0 1 1 0 8 0 kqueuepl 104 41 0 39 1 0 1 1 0 8 0 pipepl 112 264 0 245 2 1 1 1 0 8 0 fdescpl 488 360 0 343 3 0 3 3 0 8 0 filepl 152 2122 0 2021 6 1 5 5 0 8 1 lockfpl 104 32 0 32 2 1 1 1 0 8 1 lockfspl 32 103 0 103 2 1 1 1 0 8 1 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 478 0 469 1 0 1 1 0 8 0 zombiepl 144 343 0 343 1 0 1 1 0 8 1 processpl 840 376 0 343 4 0 4 4 0 8 0 procpl 600 723 0 676 4 0 4 4 0 8 0 srpgc 64 22 0 22 1 0 1 1 0 8 1 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 384 262 0 240 3 0 3 3 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 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 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 129 0 0 16 0 16 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 149 0 0 9 0 9 9 0 8 0 bufpl 256 5911 0 1122 300 0 300 300 0 8 0 anonpl 16 41560 0 35311 32 3 29 31 0 125 0 amapchunkpl 152 1792 0 1699 6 1 5 5 0 158 1 amappl16 192 1147 0 794 21 1 20 20 0 8 2 amappl15 184 132 0 126 1 0 1 1 0 8 0 amappl14 176 36 0 31 2 1 1 1 0 8 0 amappl13 168 27 0 24 1 0 1 1 0 8 0 amappl12 160 21 0 18 1 0 1 1 0 8 0 amappl11 152 74 0 60 1 0 1 1 0 8 0 amappl10 144 99 0 95 1 0 1 1 0 8 0 amappl9 136 596 0 592 1 0 1 1 0 8 0 amappl8 128 167 0 152 1 0 1 1 0 8 0 amappl7 120 78 0 71 1 0 1 1 0 8 0 amappl6 112 57 0 51 1 0 1 1 0 8 0 amappl5 104 111 0 101 1 0 1 1 0 8 0 amappl4 96 556 0 524 2 1 1 2 0 8 0 amappl3 88 127 0 120 1 0 1 1 0 8 0 amappl2 80 2024 0 1960 2 0 2 2 0 8 0 amappl1 72 16816 0 16358 23 13 10 19 0 8 0 amappl 72 961 0 921 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 360 0 343 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 360 0 343 1 0 1 1 0 8 0 vmmpekpl 168 6924 0 6901 2 0 2 2 0 8 0 vmmpepl 168 46443 0 44964 83 13 70 72 0 357 5 vmsppl 360 359 0 343 2 0 2 2 0 8 0 pdppl 4096 728 0 686 6 0 6 6 0 8 0 pvpl 32 153312 0 143726 103 18 85 102 0 265 2 pmappl 224 359 0 343 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 450 0 2 13 0 13 13 0 8 0