uvm_fault(0xffffffff82259780, 0xffff8000019a0002, 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(0xffffffff82259780, 0xffff8000019a0002, 0, 1) -> e rtable_satoplen(21,ffff80000199ff59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c5b790, count: 0 ddb{0}> trace rtable_satoplen(21,ffff80000199ff59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff80000199ff09,ffff80000199ff59,ffff80000199ff11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff80000199ff00,ffff800020c5b880,ffff800020c5b888,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd806f672600,fffffd806f72b000,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f72b000,9,fffffd806f672600,0,0,ffff800020b39530) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f72b000,0,ffff800020c5bb48,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b39530,4,ffff800020c5bc08,0,ffff800020c5bcd0) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b39530,ffff800020c5bce8,ffff800020c5bcd0) at sys_sendto+0x92 syscall(ffff800020c5bd80) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c5bd80) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,307b525f010) at Xsyscall+0x128 end of kernel end trace frame: 0x30a09f1ed40, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c5b6f0 rbx 0xffffffffffffff5a rdx 0xffff80000199ff5d rcx 0xffff8000019a0003 rax 0xffff8000019a0003 r8 0x21 r9 0x1 r10 0x4 r11 0x56f7db927fa85648 r12 0 r13 0xffff8000019a0003 r14 0xffffffff821b5870 mplsdomain r15 0x4 rip 0xffffffff81667140 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c5b6a0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=33350 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38978,0xffffffff8235c268 process=0xffff800020b8c6a8 user=0xffff800020c56000, vmspace=0xfffffd807effe870 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 5254 13867 198 0 2 0 syz-executor.0 * 5254 33350 198 0 7 0x4000000 syz-executor.0 38586 49495 70465 0 2 0 syz-executor.1 38586 172904 70465 0 7 0x4000080 syz-executor.1 70465 61255 18815 0 2 0x482 syz-executor.1 65043 249093 0 0 3 0x14200 bored sosplice 198 238541 18815 0 2 0x482 syz-executor.0 18815 259647 92397 0 3 0x82 thrsleep syz-fuzzer 18815 419227 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 440955 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 376086 92397 0 3 0x4000082 kqread syz-fuzzer 18815 270745 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 276208 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 505326 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 44359 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 478259 92397 0 3 0x4000082 thrsleep syz-fuzzer 18815 124124 92397 0 3 0x4000082 thrsleep syz-fuzzer 92397 49908 34699 0 3 0x10008a pause ksh 34699 74011 15789 0 3 0x92 select sshd 84294 308948 1 0 3 0x100083 ttyin getty 15789 345809 1 0 3 0x80 select sshd 62440 321909 42328 74 3 0x100092 bpf pflogd 42328 385680 1 0 3 0x80 netio pflogd 83403 220388 27663 73 2 0x100090 syslogd 27663 85551 1 0 3 0x100082 netio syslogd 90317 446047 1 77 3 0x100090 poll dhclient 18824 188489 1 0 3 0x80 poll dhclient 5293 204896 0 0 2 0x14200 zerothread 7281 323889 0 0 3 0x14200 aiodoned aiodoned 52121 255151 0 0 3 0x14200 syncer update 99777 140855 0 0 3 0x14200 cleaner cleaner 12416 464370 0 0 3 0x14200 reaper reaper 18111 341038 0 0 3 0x14200 pgdaemon pagedaemon 36948 59492 0 0 3 0x14200 bored crynlk 34316 158469 0 0 3 0x14200 bored crypto 96789 493539 0 0 3 0x40014200 acpi0 acpi0 29686 158557 0 0 3 0x40014200 idle1 91373 100230 0 0 3 0x14200 bored softnet 3197 81518 0 0 3 0x14200 bored systqmp 12498 164350 0 0 3 0x14200 bored systq 41583 374227 0 0 3 0x40014200 bored softclock 88217 433179 0 0 3 0x40014200 idle0 32855 11668 0 0 3 0x14200 bored smr 1 447017 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 5254 (syz-executor.0) thread 0xffff800020b39530 (33350) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823681d0) 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 9492 6397K 6405K 78643K 10660 0 0 pcb 26 9K 10K 78643K 167 0 0 rtable 101 4K 4K 78643K 281 0 0 ifaddr 49 12K 12K 78643K 89 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1470 0 0 iov 0 0K 24K 78643K 36 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1195 75K 75K 78643K 1370 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 5 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 40 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 17K 78643K 260 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 54 51K 79K 78643K 379 0 0 subproc 64 65538K 67586K 78643K 102 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 8 0 0 in_multi 33 2K 2K 78643K 46 0 0 ether_multi 1 0K 0K 78643K 1 0 0 mrt 0 0K 0K 78643K 1 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 204 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 29K 78643K 1686 0 0 UVM aobj 6 2K 2K 78643K 6 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 22 0 0 NDP 9 0K 0K 78643K 24 0 0 temp 124 2368K 2433K 78643K 3944 0 0 kqueue 0 0K 0K 78643K 10 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 5 0 1 1 0 1 1 0 8 0 inpcbpl 280 137 0 130 1 0 1 1 0 8 0 plimitpl 152 23 0 15 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 52 0 12 2 0 2 2 0 8 0 syncache 264 4 0 4 2 2 0 1 0 8 0 tcpqe 32 25 0 25 1 1 0 1 0 8 0 tcpcb 544 38 0 34 1 0 1 1 0 8 0 nd6 48 6 0 2 1 0 1 1 0 8 0 ppxss 1128 8 0 8 1 0 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 14 0 5 1 0 1 1 0 8 0 pfstkey 112 14 0 5 1 0 1 1 0 8 0 pfstate 328 14 0 5 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 256 225 0 41 12 0 12 12 0 8 0 art_table 32 226 0 41 2 0 2 2 0 8 0 art_node 16 49 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 36 0 26 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1914 0 499 46 0 46 46 0 8 0 ffsino 272 1914 0 499 95 0 95 95 0 8 0 nchpl 144 2492 0 858 61 0 61 61 0 8 0 uvmvnodes 72 1991 0 0 37 0 37 37 0 8 0 vnodes 200 1991 0 0 105 0 105 105 0 8 0 namei 1024 6738 0 6738 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 6766 0 6766 10 7 3 6 0 8 3 sigapl 432 456 0 440 2 0 2 2 0 8 0 futexpl 56 2836 0 2836 1 0 1 1 0 8 1 knotepl 112 159 0 140 1 0 1 1 0 8 0 kqueuepl 104 103 0 100 1 0 1 1 0 8 0 pipepl 112 294 0 273 3 2 1 1 0 8 0 fdescpl 488 457 0 440 3 0 3 3 0 8 0 filepl 152 2596 0 2493 5 0 5 5 0 8 1 lockfpl 104 59 0 59 2 1 1 1 0 8 1 lockfspl 32 52 0 52 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 517 0 508 1 0 1 1 0 8 0 zombiepl 144 440 0 440 3 2 1 1 0 8 1 processpl 840 473 0 440 4 0 4 4 0 8 0 procpl 600 1016 0 972 4 0 4 4 0 8 0 srpgc 64 6 0 6 1 1 0 1 0 8 0 sosppl 128 6 0 6 1 1 0 1 0 8 0 sockpl 384 265 0 245 3 0 3 3 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 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 mcl2k 2048 156 0 0 18 0 18 18 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 183 0 0 10 0 10 10 0 8 0 bufpl 256 6380 0 1146 328 0 328 328 0 8 0 anonpl 16 51920 0 43153 50 6 44 44 0 125 7 amapchunkpl 152 2366 0 2278 10 1 9 9 0 158 4 amappl16 192 1543 0 1086 25 1 24 24 0 8 0 amappl15 184 59 0 54 1 0 1 1 0 8 0 amappl14 176 103 0 98 3 2 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 81 0 77 2 1 1 1 0 8 0 amappl11 152 21 0 6 1 0 1 1 0 8 0 amappl10 144 196 0 190 1 0 1 1 0 8 0 amappl9 136 622 0 619 1 0 1 1 0 8 0 amappl8 128 170 0 157 1 0 1 1 0 8 0 amappl7 120 33 0 28 1 0 1 1 0 8 0 amappl6 112 60 0 51 1 0 1 1 0 8 0 amappl5 104 187 0 170 1 0 1 1 0 8 0 amappl4 96 612 0 583 2 1 1 2 0 8 0 amappl3 88 191 0 185 1 0 1 1 0 8 0 amappl2 80 2819 0 2756 2 0 2 2 0 8 0 amappl1 72 19742 0 19285 25 15 10 20 0 8 0 amappl 72 1259 0 1222 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 457 0 440 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 457 0 440 1 0 1 1 0 8 0 vmmpekpl 168 7798 0 7777 2 0 2 2 0 8 0 vmmpepl 168 55371 0 53826 95 25 70 79 0 357 2 vmsppl 360 456 0 440 2 0 2 2 0 8 0 pdppl 4096 922 0 880 6 0 6 6 0 8 0 pvpl 32 178862 0 166788 139 22 117 117 0 265 17 pmappl 224 456 0 440 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 484 0 5 14 0 14 14 0 8 0