uvm_fault(0xffffffff82259780, 0xffff8000029b3002, 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(0xffffffff82259780, 0xffff8000029b3002, 0, 1) -> e rtable_satoplen(21,ffff8000029b2f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c514e0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff8000029b2f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff8000029b2f09,ffff8000029b2f59,ffff8000029b2f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff8000029b2f00,ffff800020c515d0,ffff800020c515d8,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd806b6b4d00,fffffd806f72fa80,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f72fa80,9,fffffd806b6b4d00,0,0,ffff800020b9b2d8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f72fa80,0,ffff800020c51898,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b9b2d8,4,ffff800020c51958,0,ffff800020c51a20) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b9b2d8,ffff800020c51a38,ffff800020c51a20) at sys_sendto+0x92 syscall(ffff800020c51ad0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c51ad0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,8d7b57e10d8) at Xsyscall+0x128 end of kernel end trace frame: 0x8da9169aa20, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c51440 rbx 0xffffffffffffff5a rdx 0xffff8000029b2f5d rcx 0xffff8000029b3003 rax 0xffff8000029b3003 r8 0x21 r9 0x1 r10 0x4 r11 0x8c48bf580f54153e r12 0 r13 0xffff8000029b3003 r14 0xffffffff821b5870 mplsdomain r15 0x4 rip 0xffffffff81667140 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c513f0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=137616 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b9a720,0xffffffff8235c268 process=0xffff800020b3b078 user=0xffff800020c4c000, vmspace=0xfffffd807effe9d8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87416 352098 75336 0 7 0 syz-executor.0 87416 43547 75336 0 3 0x4000080 fsleep syz-executor.0 *87416 137616 75336 0 7 0x4000000 syz-executor.0 4558 493664 0 0 3 0x14200 bored sosplice 75336 41221 94144 0 3 0x82 nanosleep syz-executor.0 47158 357492 1 0 3 0x100083 ttyin getty 94144 39692 87885 0 3 0x82 thrsleep syz-fuzzer 94144 360452 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 282220 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 268844 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 235503 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 53545 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 174134 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 68334 87885 0 3 0x4000082 thrsleep syz-fuzzer 94144 264100 87885 0 3 0x4000082 kqread syz-fuzzer 94144 155298 87885 0 3 0x4000082 thrsleep syz-fuzzer 87885 203507 40721 0 3 0x10008a pause ksh 40721 360267 2733 0 3 0x92 select sshd 2733 142332 1 0 3 0x80 select sshd 97676 301708 65105 74 3 0x100092 bpf pflogd 65105 506100 1 0 3 0x80 netio pflogd 73531 61462 76094 73 2 0x100090 syslogd 76094 505226 1 0 3 0x100082 netio syslogd 6379 60597 1 77 3 0x100090 poll dhclient 1741 503514 1 0 3 0x80 poll dhclient 12312 52901 0 0 3 0x14200 pgzero zerothread 9606 2030 0 0 3 0x14200 aiodoned aiodoned 3368 88220 0 0 3 0x14200 syncer update 29961 186269 0 0 3 0x14200 cleaner cleaner 97332 160129 0 0 3 0x14200 reaper reaper 19072 339612 0 0 3 0x14200 pgdaemon pagedaemon 58305 258853 0 0 3 0x14200 bored crynlk 75110 513618 0 0 3 0x14200 bored crypto 25288 117171 0 0 3 0x40014200 acpi0 acpi0 52228 260387 0 0 3 0x40014200 idle1 73921 465677 0 0 3 0x14200 bored softnet 99984 390740 0 0 3 0x14200 bored systqmp 55167 208978 0 0 3 0x14200 bored systq 36091 316182 0 0 3 0x40014200 bored softclock 50808 69419 0 0 3 0x40014200 idle0 19580 234823 0 0 3 0x14200 bored smr 1 146959 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 87416 (syz-executor.0) thread 0xffff800020b9b2d8 (137616) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823681d0) 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 6396K 6415K 78643K 10649 0 0 pcb 27 9K 11K 78643K 239 0 0 rtable 83 3K 4K 78643K 272 0 0 ifaddr 37 10K 11K 78643K 69 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1475 0 0 iov 0 0K 24K 78643K 23 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1204 75K 76K 78643K 1399 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 8 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 1K 1K 78643K 22 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 4 9K 21K 78643K 1547 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 54 51K 71K 78643K 398 0 0 subproc 32 32769K 67586K 78643K 138 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 51 0 0 in_multi 22 1K 2K 78643K 61 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 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 224 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 77 12K 21K 78643K 5144 0 0 UVM aobj 130 4K 4K 78643K 130 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 24 0 0 NDP 6 0K 0K 78643K 20 0 0 temp 90 2367K 2434K 78643K 6510 0 0 kqueue 0 0K 0K 78643K 3 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 6 0 3 1 0 1 1 0 8 0 inpcbpl 280 1829 0 1822 1 0 1 1 0 8 0 plimitpl 152 22 0 15 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 59 0 28 2 0 2 2 0 8 0 syncache 264 4 0 4 2 2 0 1 0 8 0 tcpcb 544 63 0 59 1 0 1 1 0 8 0 nd6 48 8 0 6 1 0 1 1 0 8 0 ppxss 1128 3 0 3 1 1 0 1 0 8 0 pffrent 40 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 15 0 10 1 0 1 1 0 8 0 pfstkey 112 15 0 10 1 0 1 1 0 8 0 pfstate 328 15 0 10 1 0 1 1 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 256 266 0 123 12 0 12 12 0 8 2 art_table 32 267 0 123 2 0 2 2 0 8 0 art_node 16 58 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3184 0 1757 47 0 47 47 0 8 0 ffsino 272 3184 0 1757 96 0 96 96 0 8 0 nchpl 144 5053 0 3416 61 0 61 61 0 8 0 uvmvnodes 72 3288 0 0 60 0 60 60 0 8 0 vnodes 200 3288 0 0 174 0 174 174 0 8 0 namei 1024 29033 0 29033 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 13937 0 13937 8 7 1 6 0 8 1 sigapl 432 1741 0 1727 2 0 2 2 0 8 0 futexpl 56 27755 0 27754 1 0 1 1 0 8 0 knotepl 112 128 0 115 1 0 1 1 0 8 0 kqueuepl 104 56 0 54 1 0 1 1 0 8 0 pipepl 112 3730 0 3717 4 3 1 2 0 8 0 fdescpl 488 1742 0 1727 3 0 3 3 0 8 0 filepl 152 22640 0 22560 8 3 5 7 0 8 1 lockfpl 104 3463 0 3463 2 1 1 1 0 8 1 lockfspl 32 1951 0 1951 2 1 1 1 0 8 1 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 27 0 17 1 0 1 1 0 8 0 ucredpl 96 10649 0 10640 1 0 1 1 0 8 0 zombiepl 144 1727 0 1727 3 2 1 1 0 8 1 processpl 840 1758 0 1727 4 0 4 4 0 8 0 procpl 600 4461 0 4419 4 0 4 4 0 8 0 srpgc 64 18 0 18 2 1 1 1 0 8 1 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 384 2025 0 2004 5 2 3 4 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 19 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 130 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 193 0 0 9 1 8 8 0 8 0 bufpl 256 7336 0 1145 387 0 387 387 0 8 0 anonpl 16 126562 0 119474 40 3 37 37 0 125 0 amapchunkpl 152 7782 0 7695 7 3 4 5 0 158 0 amappl16 192 6722 0 6257 25 0 25 25 0 8 1 amappl15 184 875 0 870 1 0 1 1 0 8 0 amappl14 176 50 0 47 3 2 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 23 0 23 2 2 0 1 0 8 0 amappl11 152 23 0 8 1 0 1 1 0 8 0 amappl10 144 749 0 746 1 0 1 1 0 8 0 amappl9 136 589 0 587 1 0 1 1 0 8 0 amappl8 128 149 0 132 1 0 1 1 0 8 0 amappl7 120 39 0 33 1 0 1 1 0 8 0 amappl6 112 57 0 50 1 0 1 1 0 8 0 amappl5 104 118 0 103 1 0 1 1 0 8 0 amappl4 96 1948 0 1919 2 1 1 2 0 8 0 amappl3 88 160 0 154 1 0 1 1 0 8 0 amappl2 80 15158 0 15104 2 0 2 2 0 8 0 amappl1 72 47751 0 47314 25 15 10 20 0 8 0 amappl 72 4707 0 4673 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 64 129 0 0 3 0 3 3 0 8 0 uaddrrnd 24 1742 0 1727 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1742 0 1727 1 0 1 1 0 8 0 vmmpekpl 168 21735 0 21712 2 0 2 2 0 8 0 vmmpepl 168 185019 0 183598 101 25 76 81 0 357 12 vmsppl 360 1741 0 1727 2 0 2 2 0 8 0 pdppl 4096 3492 0 3454 6 0 6 6 0 8 0 pvpl 32 410296 0 399992 122 22 100 104 0 265 0 pmappl 224 1741 0 1727 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 543 0 6 16 0 16 16 0 8 0