uvm_fault(0xffffffff8225bef8, 0xffff800004367002, 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(0xffffffff8225bef8, 0xffff800004367002, 0, 1) -> e rtable_satoplen(21,ffff800004366f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c59650, count: 0 ddb{0}> trace rtable_satoplen(21,ffff800004366f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004366f09,ffff800004366f59,ffff800004366f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004366f00,ffff800020c59740,ffff800020c59748,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806d5d4f00,fffffd807c75cd90,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd807c75cd90,9,fffffd806d5d4f00,0,0,ffff800020b384c8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd807c75cd90,0,ffff800020c59a08,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b384c8,4,ffff800020c59ac8,0,ffff800020c59b90) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b384c8,ffff800020c59ba8,ffff800020c59b90) at sys_sendto+0x92 syscall(ffff800020c59c40) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c59c40) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,a86f99fe010) at Xsyscall+0x128 end of kernel end trace frame: 0xa893edb1570, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c595b0 rbx 0xffffffffffffff5a rdx 0xffff800004366f5d rcx 0xffff800004367003 rax 0xffff800004367003 r8 0x21 r9 0x1 r10 0x4 r11 0xfeaaba8f834137ba r12 0 r13 0xffff800004367003 r14 0xffffffff82190d08 mplsdomain r15 0x4 rip 0xffffffff81d8c9d0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c59560 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=504500 stat=onproc flags process=10 proc=4000000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020b39c38,0xffffffff82387188 process=0xffff800020b8c6a8 user=0xffff800020c54000, vmspace=0xfffffd806e91ce18 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34303 25844 73521 32767 7 0x10 syz-executor.0 *34303 504500 73521 32767 7 0x4000010 syz-executor.0 73521 158467 95056 32767 2 0x490 syz-executor.0 95056 352043 38523 0 3 0x82 wait syz-executor.0 97548 512829 70805 32767 2 0x490 syz-executor.1 97548 339422 70805 32767 3 0x4000090 netio syz-executor.1 70805 186082 47345 32767 3 0x90 nanosleep syz-executor.1 47345 164639 38523 0 3 0x82 wait syz-executor.1 87176 199218 0 0 3 0x14200 bored sosplice 38523 370066 26365 0 3 0x82 kqread syz-fuzzer 38523 125667 26365 0 2 0x4000482 syz-fuzzer 38523 167318 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 93273 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 75842 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 387222 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 247634 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 389332 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 407321 26365 0 3 0x4000082 thrsleep syz-fuzzer 38523 337276 26365 0 3 0x4000082 thrsleep syz-fuzzer 26365 279438 32921 0 3 0x10008a pause ksh 32921 404093 25569 0 3 0x92 select sshd 57043 92121 1 0 3 0x100083 ttyin getty 25569 267366 1 0 3 0x80 select sshd 49738 406945 20945 73 2 0x100090 syslogd 20945 300946 1 0 3 0x100082 netio syslogd 27476 416695 1 77 3 0x100090 poll dhclient 55152 246386 1 0 3 0x80 poll dhclient 79771 48457 0 0 3 0x14200 pgzero zerothread 81986 404626 0 0 3 0x14200 aiodoned aiodoned 9171 370811 0 0 3 0x14200 syncer update 5781 145742 0 0 3 0x14200 cleaner cleaner 14999 376859 0 0 3 0x14200 reaper reaper 93520 101595 0 0 3 0x14200 pgdaemon pagedaemon 51189 471020 0 0 3 0x14200 bored crynlk 58420 295811 0 0 3 0x14200 bored crypto 5135 94341 0 0 3 0x40014200 acpi0 acpi0 9854 203207 0 0 3 0x40014200 idle1 8873 173794 0 0 3 0x14200 bored softnet 1055 178342 0 0 3 0x14200 bored systqmp 62548 149707 0 0 3 0x14200 bored systq 37456 274668 0 0 3 0x40014200 bored softclock 87386 269804 0 0 3 0x40014200 idle0 92367 295604 0 0 3 0x14200 bored smr 1 479648 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34303 (syz-executor.0) thread 0xffff800020b384c8 (504500) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82345c60) 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 10636 0 0 pcb 27 9K 10K 78643K 356 0 0 rtable 98 3K 3K 78643K 751 0 0 ifaddr 36 10K 10K 78643K 148 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 35 0 0 iov 0 0K 16K 78643K 72 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 1631 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 14 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 1K 1K 78643K 91 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 8 25K 29K 78643K 662 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 41 38K 58K 78643K 666 0 0 subproc 68 69634K 69634K 78643K 680 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 68 0 0 in_multi 33 2K 2K 78643K 265 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 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 291 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 31K 78643K 2831 0 0 UVM aobj 53 3K 3K 78643K 61 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 45 0 0 NDP 7 0K 0K 78643K 63 0 0 temp 121 2378K 2448K 78643K 5529 0 0 kqueue 0 0K 0K 78643K 2 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 22 0 18 1 0 1 1 0 8 0 inpcbpl 280 312 0 305 1 0 1 1 0 8 0 plimitpl 152 84 0 75 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 203 0 163 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 127 0 123 1 0 1 1 0 8 0 nd6 48 40 0 36 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 939 0 751 12 0 12 12 0 8 0 art_table 32 940 0 751 2 0 2 2 0 8 0 art_node 16 202 0 168 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 59 0 8 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2163 0 734 47 0 47 47 0 8 0 ffsino 272 2163 0 734 96 0 96 96 0 8 0 nchpl 144 3218 0 1602 61 0 61 61 0 8 0 uvmvnodes 72 2512 0 0 46 0 46 46 0 8 0 vnodes 200 2512 0 0 133 0 133 133 0 8 0 namei 1024 9860 0 9860 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 8885 0 8885 14 13 1 6 0 8 1 sigapl 432 778 0 762 2 0 2 2 0 8 0 futexpl 56 6402 0 6402 1 0 1 1 0 8 1 knotepl 112 575 0 556 1 0 1 1 0 8 0 kqueuepl 104 180 0 178 1 0 1 1 0 8 0 pipepl 112 730 0 711 4 3 1 2 0 8 0 fdescpl 488 779 0 762 3 0 3 3 0 8 0 filepl 152 4862 0 4762 8 3 5 7 0 8 1 lockfpl 104 160 0 160 2 1 1 1 0 8 1 lockfspl 32 307 0 307 2 1 1 1 0 8 1 sessionpl 112 35 0 25 1 0 1 1 0 8 0 pgrppl 48 37 0 27 1 0 1 1 0 8 0 ucredpl 96 1195 0 1186 1 0 1 1 0 8 0 zombiepl 144 762 0 762 2 1 1 1 0 8 1 processpl 840 795 0 762 4 0 4 4 0 8 0 procpl 600 1869 0 1825 5 1 4 5 0 8 0 srpgc 64 104 0 104 3 2 1 1 0 8 1 sosppl 128 5 0 5 3 3 0 1 0 8 0 sockpl 384 665 0 644 3 0 3 3 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 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 116 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 159 0 0 9 0 9 9 0 8 0 bufpl 256 6707 0 1122 350 0 350 350 0 8 0 anonpl 16 106131 0 100463 49 20 29 44 0 125 0 amapchunkpl 152 5490 0 5404 16 11 5 11 0 158 1 amappl16 192 3588 0 3237 37 18 19 30 0 8 1 amappl15 184 51 0 45 1 0 1 1 0 8 0 amappl14 176 137 0 133 2 1 1 1 0 8 0 amappl13 168 168 0 165 1 0 1 1 0 8 0 amappl12 160 133 0 132 1 0 1 1 0 8 0 amappl11 152 151 0 137 1 0 1 1 0 8 0 amappl10 144 172 0 170 2 1 1 1 0 8 0 amappl9 136 699 0 695 1 0 1 1 0 8 0 amappl8 128 272 0 252 1 0 1 1 0 8 0 amappl7 120 124 0 117 1 0 1 1 0 8 0 amappl6 112 175 0 163 1 0 1 1 0 8 0 amappl5 104 210 0 200 1 0 1 1 0 8 0 amappl4 96 997 0 966 2 1 1 2 0 8 0 amappl3 88 258 0 252 1 0 1 1 0 8 0 amappl2 80 5118 0 5053 2 0 2 2 0 8 0 amappl1 72 27227 0 26759 24 14 10 19 0 8 0 amappl 72 2245 0 2209 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 60 0 8 1 0 1 1 0 8 0 uaddrrnd 24 779 0 762 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 779 0 762 1 0 1 1 0 8 0 vmmpekpl 168 10375 0 10352 2 0 2 2 0 8 0 vmmpepl 168 95207 0 93719 100 25 75 76 0 357 10 vmsppl 360 778 0 762 2 0 2 2 0 8 0 pdppl 4096 1566 0 1524 6 0 6 6 0 8 0 pvpl 32 293752 0 284764 133 43 90 123 0 265 8 pmappl 224 778 0 762 7 5 2 2 0 8 1 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 500 0 3 15 0 15 15 0 8 0