uvm_fault(0xffffffff8233ef50, 0xffff800003992002, 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, 0xffff800003992002, 0, 1) -> e rtable_satoplen(21,ffff800003991f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c390e0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800003991f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800003991f09,ffff800003991f59,ffff800003991f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800003991f00,ffff800020c391d0,ffff800020c391d8,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd807b95b900,fffffd806f731480,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f731480,9,fffffd807b95b900,0,0,ffff800020b29788) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f731480,0,ffff800020c39498,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b29788,3,ffff800020c39558,0,ffff800020c39620) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b29788,ffff800020c39638,ffff800020c39620) at sys_sendto+0x92 syscall(ffff800020c396d0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c396d0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,5a70d4920d8) at Xsyscall+0x128 end of kernel end trace frame: 0x5aa08ab91c0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c39040 rbx 0xffffffffffffff5a rdx 0xffff800003991f5d rcx 0xffff800003992003 rax 0xffff800003992003 r8 0x21 r9 0x1 r10 0x4 r11 0x95baeade2a8176d9 r12 0 r13 0xffff800003992003 r14 0xffffffff82188408 mplsdomain r15 0x4 rip 0xffffffff812ab6d0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c38ff0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=331888 stat=onproc flags process=0 proc=4000000 pri=57, usrpri=57, nice=20 forw=0xffffffffffffffff, list=0xffff800020b28018,0xffffffff823ddcc0 process=0xffff800020b7c360 user=0xffff800020c34000, vmspace=0xfffffd807f00b9d8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25016 236277 42927 0 7 0 syz-executor.1 25016 77803 42927 0 3 0x4000080 fsleep syz-executor.1 *25016 331888 42927 0 7 0x4000000 syz-executor.1 42927 497605 88090 0 3 0x82 nanosleep syz-executor.1 57994 27032 88090 0 3 0x82 piperd syz-executor.0 88090 486105 74038 0 3 0x82 thrsleep syz-fuzzer 88090 327048 74038 0 3 0x4000082 nanosleep syz-fuzzer 88090 368145 74038 0 3 0x4000082 thrsleep syz-fuzzer 88090 368386 74038 0 3 0x4000082 thrsleep syz-fuzzer 88090 125016 74038 0 3 0x4000082 thrsleep syz-fuzzer 88090 309603 74038 0 3 0x4000082 nanosleep syz-fuzzer 88090 411350 74038 0 3 0x4000082 thrsleep syz-fuzzer 88090 505073 74038 0 3 0x4000082 thrsleep syz-fuzzer 88090 168312 74038 0 3 0x4000082 kqread syz-fuzzer 88090 231658 74038 0 3 0x4000082 thrsleep syz-fuzzer 74038 483902 2212 0 3 0x10008a pause ksh 2212 62957 29058 0 3 0x92 select sshd 33787 74259 1 0 3 0x100083 ttyin getty 29058 12772 1 0 3 0x80 select sshd 9020 101495 91288 74 3 0x100092 bpf pflogd 91288 47397 1 0 3 0x80 netio pflogd 74796 447667 28769 73 2 0x100090 syslogd 28769 226581 1 0 3 0x100082 netio syslogd 22380 121734 1 77 3 0x100090 poll dhclient 47033 18180 1 0 3 0x80 poll dhclient 95260 51701 0 0 3 0x14200 pgzero zerothread 36565 91071 0 0 3 0x14200 aiodoned aiodoned 66396 471017 0 0 3 0x14200 syncer update 23754 366539 0 0 3 0x14200 cleaner cleaner 58052 428800 0 0 3 0x14200 reaper reaper 18823 58698 0 0 3 0x14200 pgdaemon pagedaemon 72472 60176 0 0 3 0x14200 bored crynlk 27214 241475 0 0 3 0x14200 bored crypto 88247 167604 0 0 3 0x40014200 acpi0 acpi0 8702 339870 0 0 3 0x40014200 idle1 60189 165371 0 0 3 0x14200 bored softnet 54339 452057 0 0 3 0x14200 bored systqmp 53624 513162 0 0 3 0x14200 bored systq 76510 478199 0 0 3 0x40014200 bored softclock 85406 177769 0 0 3 0x40014200 idle0 74761 201103 0 0 3 0x14200 bored smr 1 263445 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 25016 (syz-executor.1) thread 0xffff800020b29788 (331888) 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 9474 6410K 6418K 78643K 10613 0 0 pcb 27 9K 10K 78643K 132 0 0 rtable 101 4K 4K 78643K 289 0 0 ifaddr 43 11K 11K 78643K 67 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1474 0 0 iov 0 0K 12K 78643K 20 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1196 75K 75K 78643K 1303 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 4 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 10 0K 0K 78643K 12 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 163 0 0 proc 53 50K 71K 78643K 392 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 31 0 0 in_multi 33 2K 2K 78643K 80 0 0 ether_multi 1 0K 0K 78643K 4 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 209 0 0 pfkey data 0 0K 0K 78643K 2 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 91 21K 23K 78643K 1350 0 0 UVM aobj 11 2K 2K 78643K 11 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 12 0 0 NDP 9 0K 0K 78643K 21 0 0 temp 113 2369K 2434K 78643K 3626 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 280 127 0 120 1 0 1 1 0 8 0 plimitpl 152 26 0 18 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 tcpcb 544 48 0 44 1 0 1 1 0 8 0 nd6 48 10 0 6 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 1 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 19 0 2 1 0 1 1 0 8 0 pfstkey 112 19 0 2 1 0 1 1 0 8 0 pfstate 328 19 0 2 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 256 308 0 123 12 0 12 12 0 8 0 art_table 32 309 0 123 2 0 2 2 0 8 0 art_node 16 67 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 9 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1637 0 216 46 0 46 46 0 8 0 ffsino 272 1637 0 216 95 0 95 95 0 8 0 nchpl 144 2040 0 400 61 0 61 61 0 8 0 uvmvnodes 72 1743 0 0 32 0 32 32 0 8 0 vnodes 200 1743 0 0 92 0 92 92 0 8 0 namei 1024 5376 0 5376 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 5197 0 5197 8 5 3 5 0 8 3 sigapl 432 350 0 335 2 0 2 2 0 8 0 futexpl 56 1389 0 1388 1 0 1 1 0 8 0 knotepl 112 156 0 129 2 1 1 2 0 8 0 kqueuepl 104 48 0 46 1 0 1 1 0 8 0 pipepl 112 256 0 237 3 2 1 2 0 8 0 fdescpl 488 351 0 335 3 0 3 3 0 8 0 filepl 152 1818 0 1717 6 1 5 6 0 8 1 lockfpl 104 57 0 57 2 1 1 1 0 8 1 lockfspl 32 95 0 95 2 1 1 1 0 8 1 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 157 0 148 1 0 1 1 0 8 0 zombiepl 144 335 0 335 2 1 1 1 0 8 1 processpl 840 366 0 335 4 0 4 4 0 8 0 procpl 600 644 0 602 4 0 4 4 0 8 0 srpgc 64 18 0 18 1 0 1 1 0 8 1 sockpl 384 229 0 208 4 1 3 4 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 118 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 145 0 0 8 0 8 8 0 8 0 bufpl 256 5700 0 1043 292 0 292 292 0 8 0 anonpl 16 40403 0 33346 37 2 35 35 0 125 1 amapchunkpl 152 1738 0 1638 7 1 6 6 0 158 1 amappl16 192 1108 0 698 23 0 23 23 0 8 2 amappl15 184 5 0 3 1 0 1 1 0 8 0 amappl14 176 94 0 86 1 0 1 1 0 8 0 amappl13 168 36 0 33 1 0 1 1 0 8 0 amappl12 160 75 0 74 2 1 1 1 0 8 0 amappl11 152 279 0 265 1 0 1 1 0 8 0 amappl10 144 84 0 79 1 0 1 1 0 8 0 amappl9 136 423 0 417 1 0 1 1 0 8 0 amappl8 128 185 0 168 1 0 1 1 0 8 0 amappl7 120 35 0 29 1 0 1 1 0 8 0 amappl6 112 87 0 80 1 0 1 1 0 8 0 amappl5 104 128 0 113 1 0 1 1 0 8 0 amappl4 96 314 0 289 2 1 1 2 0 8 0 amappl3 88 124 0 118 1 0 1 1 0 8 0 amappl2 80 1904 0 1849 2 0 2 2 0 8 0 amappl1 72 17227 0 16785 24 14 10 19 0 8 0 amappl 72 906 0 868 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 351 0 335 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 351 0 335 1 0 1 1 0 8 0 vmmpekpl 168 6852 0 6831 2 0 2 2 0 8 0 vmmpepl 168 45030 0 43624 89 13 76 79 0 357 14 vmsppl 360 350 0 335 2 0 2 2 0 8 0 pdppl 4096 710 0 670 6 0 6 6 0 8 0 pvpl 32 150802 0 140579 105 6 99 99 0 265 6 pmappl 224 350 0 335 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 442 0 4 13 0 13 13 0 8 0