uvm_fault(0xffffffff8233ef50, 0xffff8000019bc002, 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(0xffffffff8233ef50, 0xffff8000019bc002, 0, 1) -> e rtable_satoplen(21,ffff8000019bbf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c46c50, count: 0 ddb{0}> trace rtable_satoplen(21,ffff8000019bbf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff8000019bbf09,ffff8000019bbf59,ffff8000019bbf11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff8000019bbf00,ffff800020c46d40,ffff800020c46d48,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd807d7c7100,fffffd806b876310,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806b876310,9,fffffd807d7c7100,0,0,ffff800020b292d8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806b876310,0,ffff800020c47008,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b292d8,3,ffff800020c470c8,0,ffff800020c47190) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b292d8,ffff800020c471a8,ffff800020c47190) at sys_sendto+0x92 syscall(ffff800020c47240) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c47240) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,87c7d635010) at Xsyscall+0x128 end of kernel end trace frame: 0x87ea9c222a0, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c46bb0 rbx 0xffffffffffffff5a rdx 0xffff8000019bbf5d rcx 0xffff8000019bc003 rax 0xffff8000019bc003 r8 0x21 r9 0x1 r10 0x4 r11 0xf44328aa6f578d8a r12 0 r13 0xffff8000019bc003 r14 0xffffffff82188408 mplsdomain r15 0x4 rip 0xffffffff812ab6d0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c46b60 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=308849 stat=onproc flags process=0 proc=4000000 pri=65, usrpri=65, nice=20 forw=0xffffffffffffffff, list=0xffff800020b29788,0xffffffff823ddcc0 process=0xffff800020b7c018 user=0xffff800020c42000, vmspace=0xfffffd807f00b9d8 estcpu=31, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42623 246740 51441 0 2 0 syz-executor.1 *42623 308849 51441 0 7 0x4000000 syz-executor.1 58603 57691 51249 0 2 0 syz-executor.0 58603 474856 51249 0 3 0x4000080 msgwait syz-executor.0 18417 115145 1 0 3 0x100083 ttyin getty 77460 466251 0 0 3 0x14200 bored sosplice 51441 224734 6380 0 3 0x82 nanosleep syz-executor.1 51249 71979 6380 0 3 0x82 nanosleep syz-executor.0 6380 204357 98680 0 3 0x82 thrsleep syz-fuzzer 6380 96541 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 49350 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 411882 98680 0 3 0x4000082 kqread syz-fuzzer 6380 193544 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 377417 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 381129 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 445114 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 341268 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 155087 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 496500 98680 0 3 0x4000082 thrsleep syz-fuzzer 6380 283303 98680 0 3 0x4000082 thrsleep syz-fuzzer 98680 508528 4013 0 3 0x10008a pause ksh 4013 386042 93551 0 3 0x92 select sshd 93551 246008 1 0 3 0x80 select sshd 46010 365321 48680 74 3 0x100092 bpf pflogd 48680 464542 1 0 3 0x80 netio pflogd 23458 509322 5851 73 7 0x100090 syslogd 5851 414659 1 0 3 0x100082 netio syslogd 24321 486696 1 77 3 0x100090 poll dhclient 70698 129519 1 0 3 0x80 poll dhclient 2928 356016 0 0 2 0x14200 zerothread 97963 333752 0 0 3 0x14200 aiodoned aiodoned 36561 160281 0 0 3 0x14200 syncer update 13935 403707 0 0 3 0x14200 cleaner cleaner 7403 450437 0 0 3 0x14200 reaper reaper 17018 81218 0 0 3 0x14200 pgdaemon pagedaemon 66344 232614 0 0 3 0x14200 bored crynlk 57692 67380 0 0 3 0x14200 bored crypto 80163 420715 0 0 3 0x40014200 acpi0 acpi0 42754 58019 0 0 3 0x40014200 idle1 82416 441974 0 0 3 0x14200 bored softnet 59779 435008 0 0 3 0x14200 bored systqmp 43835 17329 0 0 3 0x14200 bored systq 68658 445737 0 0 3 0x40014200 bored softclock 74045 77969 0 0 3 0x40014200 idle0 9225 389335 0 0 3 0x14200 bored smr 1 460641 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 42623 (syz-executor.1) thread 0xffff800020b292d8 (308849) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823d1188) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9529 6416K 6419K 78643K 10732 0 0 pcb 27 9K 11K 78643K 275 0 0 rtable 101 4K 4K 78643K 253 0 0 ifaddr 62 13K 13K 78643K 95 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1474 0 0 iov 0 0K 16K 78643K 51 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1204 75K 76K 78643K 1436 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 9 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 87 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 21K 78643K 395 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 54 51K 71K 78643K 404 0 0 subproc 64 65538K 67586K 78643K 70 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 57 0 0 in_multi 33 2K 2K 78643K 42 0 0 ether_multi 1 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 225 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 97 21K 21K 78643K 2122 0 0 UVM aobj 33 2K 2K 78643K 38 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 30 0 0 NDP 13 0K 0K 78643K 25 0 0 temp 168 2373K 2439K 78643K 4178 0 0 kqueue 0 0K 0K 78643K 4 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 4 0 0 1 0 1 1 0 8 0 inpcbpl 280 242 0 235 1 0 1 1 0 8 0 plimitpl 152 29 0 21 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 41 0 1 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 93 0 89 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 6 0 6 2 2 0 1 0 8 0 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 17 0 4 1 0 1 1 0 8 0 pfstkey 112 17 0 4 1 0 1 1 0 8 0 pfstate 328 17 0 4 2 0 2 2 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 40 0 6 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 36 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2184 0 766 46 0 46 46 0 8 0 ffsino 272 2184 0 766 95 0 95 95 0 8 0 nchpl 144 2999 0 1370 61 0 61 61 0 8 0 uvmvnodes 72 2267 0 0 42 0 42 42 0 8 0 vnodes 200 2267 0 0 120 0 120 120 0 8 0 namei 1024 8300 0 8300 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 7465 0 7465 7 6 1 5 0 8 1 sigapl 432 592 0 576 2 0 2 2 0 8 0 futexpl 56 5018 0 5018 1 0 1 1 0 8 1 knotepl 112 178 0 151 2 1 1 2 0 8 0 kqueuepl 104 144 0 142 1 0 1 1 0 8 0 pipepl 112 372 0 353 2 1 1 2 0 8 0 fdescpl 488 593 0 576 3 0 3 3 0 8 0 filepl 152 3482 0 3381 6 1 5 6 0 8 1 lockfpl 104 129 0 129 2 1 1 1 0 8 1 lockfspl 32 156 0 156 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 685 0 676 1 0 1 1 0 8 0 zombiepl 144 576 0 576 1 0 1 1 0 8 1 processpl 840 609 0 576 4 0 4 4 0 8 0 procpl 600 1457 0 1411 4 0 4 4 0 8 0 sosppl 128 4 0 4 2 2 0 1 0 8 0 sockpl 384 470 0 449 4 1 3 4 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 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 124 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 141 0 0 8 0 8 8 0 8 0 bufpl 256 6059 0 1045 314 0 314 314 0 8 0 anonpl 16 54852 0 46034 39 2 37 37 0 125 0 amapchunkpl 152 2863 0 2751 7 2 5 6 0 158 0 amappl16 192 2205 0 1750 25 1 24 24 0 8 1 amappl15 184 199 0 197 1 0 1 1 0 8 0 amappl14 176 29 0 23 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 22 0 19 1 0 1 1 0 8 0 amappl11 152 397 0 382 1 0 1 1 0 8 0 amappl10 144 71 0 65 1 0 1 1 0 8 0 amappl9 136 545 0 541 1 0 1 1 0 8 0 amappl8 128 135 0 119 1 0 1 1 0 8 0 amappl7 120 26 0 23 1 0 1 1 0 8 0 amappl6 112 56 0 48 1 0 1 1 0 8 0 amappl5 104 314 0 299 1 0 1 1 0 8 0 amappl4 96 325 0 300 2 1 1 2 0 8 0 amappl3 88 145 0 140 1 0 1 1 0 8 0 amappl2 80 4496 0 4429 2 0 2 2 0 8 0 amappl1 72 22135 0 21672 24 14 10 19 0 8 0 amappl 72 1691 0 1649 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 37 0 5 1 0 1 1 0 8 0 uaddrrnd 24 593 0 576 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 593 0 576 1 0 1 1 0 8 0 vmmpekpl 168 8980 0 8957 2 0 2 2 0 8 0 vmmpepl 168 68499 0 66939 86 16 70 75 0 357 2 vmsppl 360 592 0 576 2 0 2 2 0 8 0 pdppl 4096 1194 0 1152 6 0 6 6 0 8 0 pvpl 32 192995 0 180938 110 6 104 104 0 265 6 pmappl 224 592 0 576 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 464 0 3 14 0 14 14 0 8 0