uvm_fault(0xffffffff82262ef8, 0xffff800004b7c002, 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(0xffffffff82262ef8, 0xffff800004b7c002, 0, 1) -> e rtable_satoplen(21,ffff800004b7bf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020b6d5d0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800004b7bf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004b7bf09,ffff800004b7bf59,ffff800004b7bf11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004b7bf00,ffff800020b6d6c0,ffff800020b6d6c8,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd807eba5b00,fffffd806eacda88,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806eacda88,9,fffffd807eba5b00,0,0,ffff800020b384c8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806eacda88,0,ffff800020b6d988,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b384c8,3,ffff800020b6da48,0,ffff800020b6db10) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b384c8,ffff800020b6db28,ffff800020b6db10) at sys_sendto+0x92 syscall(ffff800020b6dbc0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020b6dbc0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,28040403010) at Xsyscall+0x128 end of kernel end trace frame: 0x282f519f9a0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020b6d530 rbx 0xffffffffffffff5a rdx 0xffff800004b7bf5d rcx 0xffff800004b7c003 rax 0xffff800004b7c003 r8 0x21 r9 0x1 r10 0x4 r11 0xba2ee951f6cd4a0d r12 0 r13 0xffff800004b7c003 r14 0xffffffff821a56a8 mplsdomain r15 0x4 rip 0xffffffff813f4430 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020b6d4e0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=379525 stat=onproc flags process=10 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38bd0,0xffffffff82352f38 process=0xffff800020b3a9e8 user=0xffff800020b68000, vmspace=0xfffffd807effd438 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87154 332492 63488 32767 7 0x10 syz-executor.0 *87154 379525 63488 32767 7 0x4000010 syz-executor.0 63488 246634 45096 32767 3 0x90 nanosleep syz-executor.0 45096 372257 57811 0 3 0x82 wait syz-executor.0 42686 106423 0 0 3 0x14200 bored sosplice 57811 3632 35101 0 3 0x82 thrsleep syz-fuzzer 57811 336518 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 394761 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 518283 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 436025 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 230735 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 324782 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 59393 35101 0 3 0x4000082 thrsleep syz-fuzzer 57811 120429 35101 0 3 0x4000082 kqread syz-fuzzer 57811 381713 35101 0 3 0x4000082 thrsleep syz-fuzzer 35101 283789 150 0 3 0x10008a pause ksh 150 336816 48355 0 3 0x92 select sshd 60107 523612 1 0 3 0x100083 ttyin getty 48355 20442 1 0 3 0x80 select sshd 86588 176210 53311 73 2 0x100090 syslogd 53311 76006 1 0 3 0x100082 netio syslogd 796 226525 1 77 3 0x100090 poll dhclient 73730 486325 1 0 3 0x80 poll dhclient 26001 495462 0 0 3 0x14200 pgzero zerothread 66821 195299 0 0 3 0x14200 aiodoned aiodoned 45101 159734 0 0 3 0x14200 syncer update 18849 445208 0 0 3 0x14200 cleaner cleaner 18350 4454 0 0 3 0x14200 reaper reaper 22624 35033 0 0 3 0x14200 pgdaemon pagedaemon 47870 345167 0 0 3 0x14200 bored crynlk 28846 308986 0 0 3 0x14200 bored crypto 5861 251604 0 0 3 0x40014200 acpi0 acpi0 20976 224847 0 0 3 0x40014200 idle1 22236 83061 0 0 3 0x14200 bored softnet 57915 161474 0 0 3 0x14200 bored systqmp 69949 522012 0 0 3 0x14200 bored systq 48603 103064 0 0 3 0x40014200 bored softclock 60026 497041 0 0 3 0x40014200 idle0 16127 505915 0 0 3 0x14200 bored smr 1 514918 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 87154 (syz-executor.0) thread 0xffff800020b384c8 (379525) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82342968) 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 9455 6318K 6321K 78643K 10677 0 0 pcb 24 9K 11K 78643K 548 0 0 rtable 80 2K 3K 78643K 1019 0 0 ifaddr 29 9K 10K 78643K 194 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 43 0 0 iov 0 0K 24K 78643K 91 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 1841 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 16 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 122 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 33K 78643K 983 0 0 sigio 0 0K 0K 78643K 17 0 0 proc 41 38K 58K 78643K 818 0 0 subproc 34 34817K 69634K 78643K 952 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 111 0 0 in_multi 22 1K 2K 78643K 347 0 0 ether_multi 1 0K 0K 78643K 10 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 346 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 80 12K 30K 78643K 3945 0 0 UVM aobj 63 4K 4K 78643K 71 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 52 0 0 NDP 4 0K 0K 78643K 87 0 0 temp 97 2377K 2449K 78643K 6720 0 0 kqueue 0 0K 0K 78643K 16 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 30 0 27 1 0 1 1 0 8 0 inpcbpl 280 551 0 544 1 0 1 1 0 8 0 plimitpl 152 116 0 109 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 275 0 244 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 24 0 24 1 1 0 1 0 8 0 tcpcb 544 226 0 222 1 0 1 1 0 8 0 nd6 48 56 0 54 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1268 0 1120 12 0 12 12 0 8 1 art_table 32 1269 0 1120 2 0 2 2 0 8 0 art_node 16 274 0 246 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 1 1 0 1 1 0 8 0 semapl 112 120 0 110 1 0 1 1 0 8 0 shmpl 112 69 0 8 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2539 0 1114 47 0 47 47 0 8 0 ffsino 272 2539 0 1114 96 0 96 96 0 8 0 nchpl 144 4033 0 2420 62 1 61 61 0 8 0 uvmvnodes 72 3024 0 0 55 0 55 55 0 8 0 vnodes 200 3024 0 0 160 0 160 160 0 8 0 namei 1024 13354 0 13354 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 11005 0 11005 11 8 3 6 0 8 3 sigapl 432 1075 0 1062 3 1 2 3 0 8 0 futexpl 56 8865 0 8865 1 0 1 1 0 8 1 knotepl 112 820 0 807 1 0 1 1 0 8 0 kqueuepl 104 256 0 254 1 0 1 1 0 8 0 pipepl 112 960 0 945 5 4 1 2 0 8 0 fdescpl 488 1076 0 1062 3 0 3 3 0 8 0 filepl 152 7115 0 7040 10 5 5 7 0 8 1 lockfpl 104 265 0 265 3 2 1 1 0 8 1 lockfspl 32 476 0 476 3 2 1 1 0 8 1 sessionpl 112 43 0 34 1 0 1 1 0 8 0 pgrppl 48 46 0 37 1 0 1 1 0 8 0 ucredpl 96 1888 0 1880 1 0 1 1 0 8 0 zombiepl 144 1062 0 1062 2 1 1 1 0 8 1 processpl 840 1092 0 1062 4 0 4 4 0 8 0 procpl 600 2836 0 2796 5 1 4 5 0 8 0 srpgc 64 160 0 160 3 2 1 1 0 8 1 sosppl 128 24 0 24 5 5 0 1 0 8 0 sockpl 384 1103 0 1085 5 2 3 4 0 8 1 mcl64k 65536 4 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 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 130 0 0 16 1 15 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 207 0 0 10 0 10 10 0 8 0 bufpl 256 7439 0 1122 395 0 395 395 0 8 0 anonpl 16 132349 0 126844 54 21 33 43 0 125 3 amapchunkpl 152 7845 0 7765 19 13 6 9 0 158 2 amappl16 192 4488 0 4147 40 21 19 30 0 8 1 amappl15 184 115 0 110 1 0 1 1 0 8 0 amappl14 176 235 0 232 2 1 1 1 0 8 0 amappl13 168 78 0 72 1 0 1 1 0 8 0 amappl12 160 181 0 179 1 0 1 1 0 8 0 amappl11 152 84 0 73 1 0 1 1 0 8 0 amappl10 144 315 0 312 1 0 1 1 0 8 0 amappl9 136 918 0 914 1 0 1 1 0 8 0 amappl8 128 508 0 491 1 0 1 1 0 8 0 amappl7 120 239 0 231 1 0 1 1 0 8 0 amappl6 112 146 0 138 1 0 1 1 0 8 0 amappl5 104 249 0 238 1 0 1 1 0 8 0 amappl4 96 1172 0 1141 2 1 1 2 0 8 0 amappl3 88 328 0 322 1 0 1 1 0 8 0 amappl2 80 7487 0 7435 2 0 2 2 0 8 0 amappl1 72 34995 0 34579 23 13 10 19 0 8 0 amappl 72 3275 0 3244 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 70 0 8 2 0 2 2 0 8 1 uaddrrnd 24 1076 0 1062 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1076 0 1062 1 0 1 1 0 8 0 vmmpekpl 168 12637 0 12612 2 0 2 2 0 8 0 vmmpepl 168 129611 0 128324 93 23 70 76 0 357 9 vmsppl 360 1075 0 1062 2 0 2 2 0 8 0 pdppl 4096 2160 0 2124 6 0 6 6 0 8 0 pvpl 32 381823 0 373194 135 39 96 116 0 265 13 pmappl 224 1075 0 1062 4 3 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 548 0 3 16 0 16 16 0 8 0