uvm_fault(0xffffffff8233ebd8, 0xffff800004b5a002, 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(0xffffffff8233ebd8, 0xffff800004b5a002, 0, 1) -> e rtable_satoplen(21,ffff800004b59f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c5f550, count: 0 ddb{0}> trace rtable_satoplen(21,ffff800004b59f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004b59f09,ffff800004b59f59,ffff800004b59f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004b59f00,ffff800020c5f640,ffff800020c5f648,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806f3e9200,fffffd806eac5d88,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806eac5d88,9,fffffd806f3e9200,0,0,ffff800020b38978) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806eac5d88,0,ffff800020c5f908,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b38978,3,ffff800020c5f9c8,0,ffff800020c5fa90) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b38978,ffff800020c5faa8,ffff800020c5fa90) at sys_sendto+0x92 syscall(ffff800020c5fb40) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c5fb40) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,4d08e541010) at Xsyscall+0x128 end of kernel end trace frame: 0x4d35cd3f840, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c5f4b0 rbx 0xffffffffffffff5a rdx 0xffff800004b59f5d rcx 0xffff800004b5a003 rax 0xffff800004b5a003 r8 0x21 r9 0x1 r10 0x4 r11 0x9d3035f2b0899704 r12 0 r13 0xffff800004b5a003 r14 0xffffffff821ef8d0 mplsdomain r15 0x4 rip 0xffffffff81195130 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c5f460 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=475644 stat=onproc flags process=10 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b384c8,0xffffffff8236bad0 process=0xffff800020b8c6a8 user=0xffff800020c5a000, vmspace=0xfffffd807effe708 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6419 451209 50821 32767 2 0x10 syz-executor.1 * 6419 475644 50821 32767 7 0x4000010 syz-executor.1 73339 351145 94685 32767 2 0x490 syz-executor.0 73339 339288 94685 32767 3 0x4000090 ttyout syz-executor.0 73339 130076 94685 32767 3 0x4000090 fsleep syz-executor.0 94685 200871 62565 32767 3 0x90 nanosleep syz-executor.0 62565 151700 8927 0 3 0x82 wait syz-executor.0 50821 97565 74218 32767 3 0x90 nanosleep syz-executor.1 74218 496802 8927 0 3 0x82 wait syz-executor.1 52983 156601 0 0 3 0x14200 bored sosplice 8927 412297 28149 0 3 0x82 thrsleep syz-fuzzer 8927 307017 28149 0 7 0x4000482 syz-fuzzer 8927 466944 28149 0 3 0x4000082 thrsleep syz-fuzzer 8927 27796 28149 0 3 0x4000082 thrsleep syz-fuzzer 8927 217880 28149 0 3 0x4000082 thrsleep syz-fuzzer 8927 392784 28149 0 3 0x4000082 thrsleep syz-fuzzer 8927 256197 28149 0 3 0x4000082 thrsleep syz-fuzzer 8927 84397 28149 0 3 0x4000082 thrsleep syz-fuzzer 8927 6460 28149 0 3 0x4000082 kqread syz-fuzzer 8927 311346 28149 0 3 0x4000082 thrsleep syz-fuzzer 28149 397497 42292 0 3 0x10008a pause ksh 42292 403348 36466 0 3 0x92 select sshd 85047 494546 1 0 3 0x100083 ttyin getty 36466 195856 1 0 3 0x80 select sshd 8723 263406 72387 73 2 0x100090 syslogd 72387 165742 1 0 3 0x100082 netio syslogd 32326 428367 1 77 3 0x100090 poll dhclient 23262 444745 1 0 3 0x80 poll dhclient 75120 219218 0 0 3 0x14200 pgzero zerothread 36284 14599 0 0 3 0x14200 aiodoned aiodoned 75669 32130 0 0 3 0x14200 syncer update 47893 388716 0 0 3 0x14200 cleaner cleaner 74057 468328 0 0 3 0x14200 reaper reaper 81597 299146 0 0 3 0x14200 pgdaemon pagedaemon 10030 477497 0 0 3 0x14200 bored crynlk 6971 69816 0 0 3 0x14200 bored crypto 88590 189862 0 0 3 0x40014200 acpi0 acpi0 46158 454539 0 0 3 0x40014200 idle1 60023 390379 0 0 3 0x14200 bored softnet 49329 512527 0 0 3 0x14200 bored systqmp 61426 286905 0 0 3 0x14200 bored systq 93585 80753 0 0 3 0x40014200 bored softclock 67338 130317 0 0 3 0x40014200 idle0 29465 522369 0 0 3 0x14200 bored smr 1 475606 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 6419 (syz-executor.1) thread 0xffff800020b38978 (475644) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8237ada0) locked @ /syzkaller/managers/setuid/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 9459 6321K 6321K 78643K 10611 0 0 pcb 24 9K 10K 78643K 222 0 0 rtable 98 3K 3K 78643K 584 0 0 ifaddr 35 10K 10K 78643K 116 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 34 0 0 iov 0 0K 16K 78643K 47 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 1524 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 10 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 62 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 8 25K 33K 78643K 443 0 0 proc 41 38K 70K 78643K 554 0 0 subproc 68 69634K 69634K 78643K 510 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 62 0 0 in_multi 33 2K 2K 78643K 185 0 0 ether_multi 1 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 247 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 79 20K 29K 78643K 2111 0 0 UVM aobj 36 3K 3K 78643K 37 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 16 0 0 NDP 5 0K 0K 78643K 48 0 0 temp 113 2372K 2436K 78643K 4697 0 0 kqueue 0 0K 0K 78643K 6 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 17 0 13 1 0 1 1 0 8 0 inpcbpl 280 226 0 219 1 0 1 1 0 8 0 plimitpl 152 63 0 54 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 158 0 118 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 86 0 82 1 0 1 1 0 8 0 nd6 48 30 0 26 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 727 0 539 12 0 12 12 0 8 0 art_table 32 728 0 539 2 0 2 2 0 8 0 art_node 16 157 0 123 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 112 60 0 50 1 0 1 1 0 8 0 shmpl 112 35 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1929 0 500 47 0 47 47 0 8 0 ffsino 272 1929 0 500 96 0 96 96 0 8 0 nchpl 144 2686 0 1069 61 0 61 61 0 8 0 uvmvnodes 72 2193 0 0 40 0 40 40 0 8 0 vnodes 200 2193 0 0 116 0 116 116 0 8 0 namei 1024 8425 0 8425 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 7221 0 7221 10 8 2 6 0 8 2 sigapl 432 574 0 558 3 1 2 3 0 8 0 futexpl 56 3925 0 3924 1 0 1 1 0 8 0 knotepl 112 430 0 411 1 0 1 1 0 8 0 kqueuepl 104 138 0 136 1 0 1 1 0 8 0 pipepl 112 498 0 477 2 1 1 1 0 8 0 fdescpl 488 575 0 558 3 0 3 3 0 8 0 filepl 152 3709 0 3605 6 1 5 5 0 8 0 lockfpl 104 113 0 113 2 1 1 1 0 8 1 lockfspl 32 162 0 162 2 1 1 1 0 8 1 sessionpl 112 30 0 20 1 0 1 1 0 8 0 pgrppl 48 30 0 20 1 0 1 1 0 8 0 ucredpl 96 922 0 913 1 0 1 1 0 8 0 zombiepl 144 558 0 558 2 1 1 1 0 8 1 processpl 840 591 0 558 4 0 4 4 0 8 0 procpl 600 1301 0 1256 4 0 4 4 0 8 0 srpgc 64 76 0 76 1 0 1 1 0 8 1 sosppl 128 7 0 7 2 2 0 1 0 8 0 sockpl 384 441 0 423 3 0 3 3 0 8 1 mcl64k 65536 1 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 119 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 164 0 0 10 0 10 10 0 8 0 bufpl 256 6372 0 1122 329 0 329 329 0 8 0 anonpl 16 67359 0 60802 48 13 35 40 0 125 7 amapchunkpl 152 3607 0 3519 13 4 9 9 0 158 5 amappl16 192 2126 0 1788 30 12 18 28 0 8 1 amappl15 184 130 0 122 1 0 1 1 0 8 0 amappl14 176 101 0 96 2 1 1 1 0 8 0 amappl13 168 65 0 62 1 0 1 1 0 8 0 amappl12 160 49 0 46 1 0 1 1 0 8 0 amappl11 152 95 0 83 1 0 1 1 0 8 0 amappl10 144 175 0 171 2 1 1 1 0 8 0 amappl9 136 689 0 686 1 0 1 1 0 8 0 amappl8 128 276 0 262 1 0 1 1 0 8 0 amappl7 120 160 0 149 1 0 1 1 0 8 0 amappl6 112 123 0 115 1 0 1 1 0 8 0 amappl5 104 168 0 157 1 0 1 1 0 8 0 amappl4 96 742 0 714 2 1 1 2 0 8 0 amappl3 88 149 0 144 1 0 1 1 0 8 0 amappl2 80 3539 0 3475 2 0 2 2 0 8 0 amappl1 72 22211 0 21732 24 14 10 19 0 8 0 amappl 72 1604 0 1567 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 36 0 1 1 0 1 1 0 8 0 uaddrrnd 24 575 0 558 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 575 0 558 1 0 1 1 0 8 0 vmmpekpl 168 8617 0 8595 2 0 2 2 0 8 0 vmmpepl 168 71456 0 69963 88 19 69 73 0 357 4 vmsppl 360 574 0 558 2 0 2 2 0 8 0 pdppl 4096 1158 0 1116 6 0 6 6 0 8 0 pvpl 32 221501 0 211603 132 33 99 110 0 265 18 pmappl 224 574 0 558 4 3 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 479 0 3 14 0 14 14 0 8 0