uvm_fault(0xffffffff8233ef50, 0xffff80000398b002, 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(0xffffffff8233ef50, 0xffff80000398b002, 0, 1) -> e rtable_satoplen(21,ffff80000398af59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020bfecf0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff80000398af59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff80000398af09,ffff80000398af59,ffff80000398af11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff80000398af00,ffff800020bfede0,ffff800020bfede8,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd807f02b800,fffffd806f72ea80,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f72ea80,9,fffffd807f02b800,0,0,ffff800020b65c38) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f72ea80,0,ffff800020bff0a8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b65c38,3,ffff800020bff168,0,ffff800020bff230) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b65c38,ffff800020bff248,ffff800020bff230) at sys_sendto+0x92 syscall(ffff800020bff2e0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020bff2e0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,983c542c010) at Xsyscall+0x128 end of kernel end trace frame: 0x985d9f3a6c0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020bfec50 rbx 0xffffffffffffff5a rdx 0xffff80000398af5d rcx 0xffff80000398b003 rax 0xffff80000398b003 r8 0x21 r9 0x1 r10 0x4 r11 0x86e96055913d1183 r12 0 r13 0xffff80000398b003 r14 0xffffffff82188408 mplsdomain r15 0x4 rip 0xffffffff812ab6d0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020bfec00 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=143967 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b652d8,0xffffffff823ddcc0 process=0xffff800020b7cd38 user=0xffff800020bfa000, vmspace=0xfffffd807f00b438 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32654 492622 70587 0 7 0 syz-executor.0 *32654 143967 70587 0 7 0x4000000 syz-executor.0 70587 97669 85179 0 3 0x82 nanosleep syz-executor.0 86203 517038 85179 0 3 0x82 nanosleep syz-executor.1 85179 374583 16307 0 3 0x82 thrsleep syz-fuzzer 85179 126556 16307 0 3 0x4000082 nanosleep syz-fuzzer 85179 117322 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 27196 16307 0 3 0x4000082 kqread syz-fuzzer 85179 138725 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 298078 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 216068 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 367622 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 28804 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 188260 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 125151 16307 0 3 0x4000082 thrsleep syz-fuzzer 85179 212680 16307 0 3 0x4000082 thrsleep syz-fuzzer 16307 284949 18677 0 3 0x10008a pause ksh 18677 266501 25430 0 3 0x92 select sshd 35698 304873 1 0 3 0x100083 ttyin getty 25430 507298 1 0 3 0x80 select sshd 15751 157671 62243 74 3 0x100092 bpf pflogd 62243 11697 1 0 3 0x80 netio pflogd 27072 179711 32672 73 2 0x100090 syslogd 32672 353570 1 0 3 0x100082 netio syslogd 4380 348785 1 77 3 0x100090 poll dhclient 12327 275541 1 0 3 0x80 poll dhclient 50475 460453 0 0 3 0x14200 pgzero zerothread 50412 28497 0 0 3 0x14200 aiodoned aiodoned 74638 487921 0 0 3 0x14200 syncer update 44771 489998 0 0 3 0x14200 cleaner cleaner 63043 51440 0 0 3 0x14200 reaper reaper 34060 51959 0 0 3 0x14200 pgdaemon pagedaemon 72066 503652 0 0 3 0x14200 bored crynlk 31851 346076 0 0 3 0x14200 bored crypto 26449 387538 0 0 3 0x40014200 acpi0 acpi0 76847 403267 0 0 3 0x40014200 idle1 87492 155231 0 0 3 0x14200 bored softnet 92499 259852 0 0 3 0x14200 bored systqmp 28313 23672 0 0 3 0x14200 bored systq 59901 410544 0 0 3 0x40014200 bored softclock 53981 103341 0 0 3 0x40014200 idle0 86471 504409 0 0 3 0x14200 bored smr 1 479928 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 32654 (syz-executor.0) thread 0xffff800020b65c38 (143967) 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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9489 6396K 6404K 78643K 10791 0 0 pcb 26 9K 10K 78643K 276 0 0 rtable 101 4K 4K 78643K 443 0 0 ifaddr 50 12K 13K 78643K 165 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1472 0 0 iov 0 0K 24K 78643K 63 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1202 75K 75K 78643K 1587 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 13 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 64 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 25K 78643K 769 0 0 proc 54 51K 71K 78643K 398 0 0 subproc 64 65538K 67586K 78643K 170 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 43 0 0 in_multi 33 2K 2K 78643K 66 0 0 ether_multi 1 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 42 185K 185K 78643K 42 0 0 exec 0 0K 1K 78643K 248 0 0 pfkey data 0 0K 0K 78643K 5 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 87 21K 22K 78643K 2856 0 0 UVM aobj 38 2K 2K 78643K 40 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 72 0 0 NDP 9 0K 0K 78643K 48 0 0 temp 140 2372K 2437K 78643K 5204 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 7 0 3 1 0 1 1 0 8 0 inpcbpl 280 353 0 346 1 0 1 1 0 8 0 plimitpl 152 57 0 49 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 68 0 28 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 36 0 36 1 1 0 1 0 8 0 tcpcb 544 131 0 127 1 0 1 1 0 8 0 nd6 48 10 0 6 1 0 1 1 0 8 0 ppxss 1128 19 0 19 3 3 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 18 0 16 1 0 1 1 0 8 0 pfstkey 112 18 0 16 1 0 1 1 0 8 0 pfstate 328 18 0 16 2 1 1 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 256 307 0 122 12 0 12 12 0 8 0 art_table 32 308 0 122 2 0 2 2 0 8 0 art_node 16 67 0 33 1 0 1 1 0 8 0 semapl 112 62 0 52 1 0 1 1 0 8 0 shmpl 112 38 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2767 0 1339 47 0 47 47 0 8 0 ffsino 272 2767 0 1339 96 0 96 96 0 8 0 nchpl 144 3900 0 2258 61 0 61 61 0 8 0 uvmvnodes 72 2896 0 0 53 0 53 53 0 8 0 vnodes 200 2896 0 0 153 0 153 153 0 8 0 namei 1024 10381 0 10381 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 13165 0 13165 7 6 1 6 0 8 1 sigapl 432 956 0 941 3 1 2 3 0 8 0 futexpl 56 5666 0 5666 1 0 1 1 0 8 1 knotepl 112 211 0 184 2 1 1 2 0 8 0 kqueuepl 104 134 0 132 1 0 1 1 0 8 0 pipepl 112 370 0 351 2 0 2 2 0 8 1 fdescpl 488 957 0 941 3 0 3 3 0 8 0 filepl 152 4240 0 4140 9 3 6 6 0 8 2 lockfpl 104 228 0 228 4 3 1 1 0 8 1 lockfspl 32 279 0 279 4 3 1 1 0 8 1 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 1235 0 1226 1 0 1 1 0 8 0 zombiepl 144 941 0 940 1 0 1 1 0 8 0 processpl 840 972 0 940 4 0 4 4 0 8 0 procpl 600 2079 0 2035 4 0 4 4 0 8 0 srpgc 64 18 0 18 1 1 0 1 0 8 0 sockpl 384 570 0 550 6 3 3 3 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 150 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 152 0 0 8 0 8 8 0 8 0 bufpl 256 8181 0 1193 437 0 437 437 0 8 0 anonpl 16 101389 0 98185 46 26 20 45 0 125 0 amapchunkpl 152 4760 0 4676 12 7 5 11 0 158 0 amappl16 192 5170 0 5051 30 22 8 30 0 8 0 amappl15 184 76 0 75 1 0 1 1 0 8 0 amappl14 176 37 0 32 1 0 1 1 0 8 0 amappl13 168 36 0 32 1 0 1 1 0 8 0 amappl12 160 5 0 5 1 1 0 1 0 8 0 amappl11 152 297 0 284 1 0 1 1 0 8 0 amappl10 144 1082 0 1071 1 0 1 1 0 8 0 amappl9 136 447 0 444 1 0 1 1 0 8 0 amappl8 128 162 0 139 1 0 1 1 0 8 0 amappl7 120 35 0 30 1 0 1 1 0 8 0 amappl6 112 65 0 57 1 0 1 1 0 8 0 amappl5 104 117 0 103 1 0 1 1 0 8 0 amappl4 96 617 0 591 2 1 1 2 0 8 0 amappl3 88 126 0 120 1 0 1 1 0 8 0 amappl2 80 8021 0 7963 2 0 2 2 0 8 0 amappl1 72 27390 0 26942 24 14 10 19 0 8 0 amappl 72 2355 0 2321 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 39 0 2 1 0 1 1 0 8 0 uaddrrnd 24 957 0 941 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 957 0 941 1 0 1 1 0 8 0 vmmpekpl 168 10370 0 10352 2 0 2 2 0 8 0 vmmpepl 168 102237 0 101105 93 38 55 73 0 357 2 vmsppl 360 956 0 941 2 0 2 2 0 8 0 pdppl 4096 1922 0 1882 6 0 6 6 0 8 0 pvpl 32 312836 0 306479 128 53 75 116 0 265 15 pmappl 224 956 0 941 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 588 0 3 17 0 17 17 0 8 0