login: uvm_fault(0xffffffff8225bef8, 0xffff800002960002, 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, 0xffff800002960002, 0, 1) -> e rtable_satoplen(21,ffff80000295ff59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c3d650, count: 0 ddb{0}> trace rtable_satoplen(21,ffff80000295ff59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff80000295ff09,ffff80000295ff59,ffff80000295ff11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff80000295ff00,ffff800020c3d740,ffff800020c3d748,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806f1f5200,fffffd806f6b6780,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f6b6780,9,fffffd806f1f5200,0,0,ffff800020b39080) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f6b6780,0,ffff800020c3da08,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b39080,7,ffff800020c3dac8,0,ffff800020c3db90) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b39080,ffff800020c3dba8,ffff800020c3db90) at sys_sendto+0x92 syscall(ffff800020c3dc40) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c3dc40) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,b958cdfd010) at Xsyscall+0x128 end of kernel end trace frame: 0xb981bf7b460, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c3d5b0 rbx 0xffffffffffffff5a rdx 0xffff80000295ff5d rcx 0xffff800002960003 rax 0xffff800002960003 r8 0x21 r9 0x1 r10 0x4 r11 0xefe848b979d672b1 r12 0 r13 0xffff800002960003 r14 0xffffffff82190d08 mplsdomain r15 0x4 rip 0xffffffff81d8c9d0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c3d560 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=458082 stat=onproc flags process=10 proc=4000000 pri=75, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38978,0xffffffff82387188 process=0xffff800020b3b708 user=0xffff800020c38000, vmspace=0xfffffd807effe438 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67402 82210 89802 32767 7 0x10 syz-executor.0 *67402 458082 89802 32767 7 0x4000010 syz-executor.0 89802 204806 1862 32767 2 0x490 syz-executor.0 1862 281069 54801 0 3 0x82 wait syz-executor.0 6030 401598 0 0 3 0x14200 bored sosplice 54801 118087 1807 0 2 0x482 syz-fuzzer 54801 358708 1807 0 2 0x4000482 syz-fuzzer 54801 302967 1807 0 3 0x4000082 thrsleep syz-fuzzer 54801 166122 1807 0 2 0x4000002 syz-fuzzer 54801 97710 1807 0 3 0x4000082 thrsleep syz-fuzzer 54801 110650 1807 0 2 0x4000002 syz-fuzzer 54801 323666 1807 0 3 0x4000082 thrsleep syz-fuzzer 54801 499294 1807 0 3 0x4000082 kqread syz-fuzzer 54801 161701 1807 0 3 0x4000082 thrsleep syz-fuzzer 54801 166613 1807 0 3 0x4000082 thrsleep syz-fuzzer 1807 469436 97610 0 3 0x10008a pause ksh 97610 203773 24253 0 3 0x92 select sshd 22612 449689 1 0 3 0x100083 ttyin getty 24253 489180 1 0 3 0x80 select sshd 24956 460631 64086 73 2 0x100090 syslogd 64086 500737 1 0 3 0x100082 netio syslogd 14104 207094 1 77 3 0x100090 poll dhclient 16167 451572 1 0 3 0x80 poll dhclient 67224 338376 0 0 2 0x14200 zerothread 85896 350353 0 0 3 0x14200 aiodoned aiodoned 24870 362716 0 0 3 0x14200 syncer update 71183 90860 0 0 3 0x14200 cleaner cleaner 79415 4913 0 0 3 0x14200 reaper reaper 89052 507024 0 0 3 0x14200 pgdaemon pagedaemon 10219 329886 0 0 3 0x14200 bored crynlk 11439 376202 0 0 3 0x14200 bored crypto 29623 71824 0 0 3 0x40014200 acpi0 acpi0 47763 463705 0 0 3 0x40014200 idle1 63708 49919 0 0 3 0x14200 bored softnet 53136 349577 0 0 3 0x14200 bored systqmp 45061 385351 0 0 3 0x14200 bored systq 99379 191632 0 0 3 0x40014200 bored softclock 77856 153897 0 0 3 0x40014200 idle0 65029 316664 0 0 3 0x14200 bored smr 1 384262 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 67402 (syz-executor.0) thread 0xffff800020b39080 (458082) 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 9453 6318K 6320K 78643K 10565 0 0 pcb 25 9K 10K 78643K 147 0 0 rtable 80 2K 3K 78643K 307 0 0 ifaddr 28 8K 9K 78643K 59 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 19 0 0 iov 0 0K 16K 78643K 26 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 75K 78643K 1321 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 6 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 1K 1K 78643K 43 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 25K 78643K 215 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 41 38K 58K 78643K 343 0 0 subproc 34 34817K 69634K 78643K 204 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 20 0 0 in_multi 22 1K 2K 78643K 82 0 0 ether_multi 1 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 48 212K 212K 78643K 48 0 0 exec 0 0K 1K 78643K 195 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 74 12K 29K 78643K 1448 0 0 UVM aobj 9 2K 2K 78643K 9 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 22 0 0 NDP 4 0K 0K 78643K 21 0 0 temp 69 2370K 2439K 78643K 3614 0 0 kqueue 0 0K 0K 78643K 5 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 8 0 5 1 0 1 1 0 8 0 inpcbpl 280 168 0 161 1 0 1 1 0 8 0 plimitpl 152 31 0 24 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 77 0 46 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 25 0 25 1 1 0 1 0 8 0 tcpcb 544 72 0 68 1 0 1 1 0 8 0 nd6 48 12 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 348 0 204 12 0 12 12 0 8 2 art_table 32 349 0 204 2 0 2 2 0 8 0 art_node 16 76 0 48 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 41 0 31 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1662 0 248 46 0 46 46 0 8 0 ffsino 272 1662 0 248 95 0 95 95 0 8 0 nchpl 144 2171 0 563 61 0 61 61 0 8 0 uvmvnodes 72 1773 0 0 33 0 33 33 0 8 0 vnodes 200 1773 0 0 94 0 94 94 0 8 0 namei 1024 5781 0 5781 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 5392 0 5392 8 7 1 7 0 8 1 sigapl 432 373 0 360 2 0 2 2 0 8 0 futexpl 56 2045 0 2045 1 0 1 1 0 8 1 knotepl 112 212 0 199 1 0 1 1 0 8 0 kqueuepl 104 76 0 74 1 0 1 1 0 8 0 pipepl 112 274 0 259 3 1 2 2 0 8 1 fdescpl 488 374 0 360 3 0 3 3 0 8 1 filepl 152 2275 0 2198 6 1 5 5 0 8 1 lockfpl 104 91 0 90 2 1 1 1 0 8 0 lockfspl 32 214 0 213 2 1 1 1 0 8 0 sessionpl 112 21 0 12 1 0 1 1 0 8 0 pgrppl 48 21 0 12 1 0 1 1 0 8 0 ucredpl 96 493 0 485 1 0 1 1 0 8 0 zombiepl 144 360 0 360 2 1 1 1 0 8 1 processpl 840 390 0 360 4 0 4 4 0 8 0 procpl 600 789 0 749 4 0 4 4 0 8 0 srpgc 64 30 0 30 2 1 1 1 0 8 1 sosppl 128 11 0 11 1 0 1 1 0 8 1 sockpl 384 302 0 283 3 0 3 3 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 124 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 140 0 0 9 0 9 9 0 8 0 bufpl 256 5860 0 1122 297 0 297 297 0 8 0 anonpl 16 59511 0 52925 44 5 39 43 0 125 11 amapchunkpl 152 2243 0 2160 10 1 9 9 0 158 5 amappl16 192 1844 0 1504 36 11 25 29 0 8 7 amappl15 184 56 0 52 1 0 1 1 0 8 0 amappl14 176 62 0 58 2 1 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 117 0 112 1 0 1 1 0 8 0 amappl11 152 56 0 44 1 0 1 1 0 8 0 amappl10 144 76 0 76 2 1 1 1 0 8 1 amappl9 136 569 0 567 1 0 1 1 0 8 0 amappl8 128 154 0 134 1 0 1 1 0 8 0 amappl7 120 47 0 42 1 0 1 1 0 8 0 amappl6 112 78 0 70 1 0 1 1 0 8 0 amappl5 104 173 0 162 1 0 1 1 0 8 0 amappl4 96 529 0 506 2 1 1 2 0 8 0 amappl3 88 193 0 181 1 0 1 1 0 8 0 amappl2 80 2123 0 2071 2 0 2 2 0 8 0 amappl1 72 17147 0 16724 23 13 10 19 0 8 0 amappl 72 1036 0 1004 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 374 0 360 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 374 0 360 1 0 1 1 0 8 0 vmmpekpl 168 7130 0 7109 2 0 2 2 0 8 0 vmmpepl 168 48728 0 47443 89 15 74 75 0 357 17 vmsppl 360 373 0 360 2 0 2 2 0 8 0 pdppl 4096 756 0 720 6 0 6 6 0 8 1 pvpl 32 173152 0 163453 122 9 113 117 0 265 31 pmappl 224 373 0 360 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 447 0 3 13 0 13 13 0 8 0