panic: attempt to execute user address 0x20fee000 in supervisor mode Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 460174 22060 0 0 0 0 syz-executor.1 *370804 22060 0 0 0x4000000 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x40b kerntrap(ffff80002155ebf0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800021b78000,fffffd8065d98698,10,ffff80000005bc90,ffff80002155ee58) at alltraps_kern_meltdown+0x7b __kernel_end_phys(b,ffff80002155edb8,83,ffff80002155ee58,0,b) at 0x20fee000 rt_clone(ffff80002155eec8,fffffd806f6c7b70,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd806f6c7b70,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd806f6c7b70,0,0) at rtalloc_mpath+0xba sys/net/route.c:359 in_pcbselsrc(ffff80002155efa0,fffffd8069f35020,fffffd806f6c7af0) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd806f6c7af0,fffffd8069f35000) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd806f6c8900,4,0,fffffd8069f35000,0,ffff800020ab0290) at udp_usrreq+0x560 sys_connect(ffff800020ab0290,ffff80002155f128,ffff80002155f170) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff80002155f1f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff80002155f1f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,991bc7c5010) at Xsyscall+0x128 end of kernel end trace frame: 0x994a79ba4a0, count: 1 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic attempt to execute user address 0x20fee000 in supervisor mode ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x40b kerntrap(ffff80002155ebf0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800021b78000,fffffd8065d98698,10,ffff80000005bc90,ffff80002155ee58) at alltraps_kern_meltdown+0x7b __kernel_end_phys(b,ffff80002155edb8,83,ffff80002155ee58,0,b) at 0x20fee000 rt_clone(ffff80002155eec8,fffffd806f6c7b70,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd806f6c7b70,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd806f6c7b70,0,0) at rtalloc_mpath+0xba sys/net/route.c:359 in_pcbselsrc(ffff80002155efa0,fffffd8069f35020,fffffd806f6c7af0) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd806f6c7af0,fffffd8069f35000) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd806f6c8900,4,0,fffffd8069f35000,0,ffff800020ab0290) at udp_usrreq+0x560 sys_connect(ffff800020ab0290,ffff80002155f128,ffff80002155f170) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff80002155f1f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff80002155f1f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,991bc7c5010) at Xsyscall+0x128 end of kernel end trace frame: 0x994a79ba4a0, count: -14 ddb{1}> show registers rdi 0xffffffff81823987 db_enter+0x17 rsi 0x22d5 __ALIGN_SIZE+0x12d5 rbp 0xffff80002155ea60 rbx 0xffff80002155eb10 rdx 0x22d6 __ALIGN_SIZE+0x12d6 rcx 0xffff800021b78000 rax 0xffff800021b78000 r8 0xffffffff81cd62ff kprintf+0x16f r9 0x1 r10 0x25 r11 0xc89a24a8d332a160 r12 0x3000000008 r13 0xffff80002155ea70 r14 0x100 r15 0x1 rip 0xffffffff81823988 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002155ea50 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=370804 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab18c8,0xffffffff826651a0 process=0xffff800020adc700 user=0xffff80002155a000, vmspace=0xfffffd807f00a450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22060 460174 17893 0 7 0 syz-executor.1 *22060 370804 17893 0 7 0x4000000 syz-executor.1 45458 71351 80988 0 3 0x82 nanosleep syz-executor.0 2410 28913 0 0 3 0x14200 acct acct 2422 318663 1 0 3 0x100083 ttyin getty 17893 408150 80988 0 3 0x82 nanosleep syz-executor.1 70033 257712 0 0 3 0x14200 bored sosplice 80988 519527 84886 0 3 0x82 thrsleep syz-fuzzer 80988 386844 84886 0 3 0x4000082 nanosleep syz-fuzzer 80988 136956 84886 0 3 0x4000082 thrsleep syz-fuzzer 80988 101680 84886 0 3 0x4000082 kqread syz-fuzzer 80988 295429 84886 0 3 0x4000082 thrsleep syz-fuzzer 80988 185858 84886 0 3 0x4000082 nanosleep syz-fuzzer 80988 459209 84886 0 3 0x4000082 thrsleep syz-fuzzer 80988 479715 84886 0 3 0x4000082 thrsleep syz-fuzzer 80988 362412 84886 0 3 0x4000082 thrsleep syz-fuzzer 80988 364029 84886 0 3 0x4000082 thrsleep syz-fuzzer 84886 482190 45668 0 3 0x10008a pause ksh 45668 486353 47846 0 3 0x92 select sshd 47846 88111 1 0 3 0x80 select sshd 83695 450284 90547 74 3 0x100092 bpf pflogd 90547 306620 1 0 3 0x80 netio pflogd 79663 293681 23245 73 3 0x100090 kqread syslogd 23245 373989 1 0 3 0x100082 netio syslogd 23110 300291 1 77 3 0x100090 poll dhclient 13787 13507 1 0 3 0x80 poll dhclient 64032 161762 0 0 3 0x14200 pgzero zerothread 13240 103419 0 0 3 0x14200 aiodoned aiodoned 21019 351670 0 0 3 0x14200 syncer update 29336 34327 0 0 3 0x14200 cleaner cleaner 19778 162188 0 0 3 0x14200 reaper reaper 51300 196181 0 0 3 0x14200 pgdaemon pagedaemon 70770 156235 0 0 3 0x14200 bored crynlk 82548 62007 0 0 3 0x14200 bored crypto 42704 471259 0 0 3 0x40014200 acpi0 acpi0 31495 228193 0 0 3 0x40014200 idle1 551 262973 0 0 3 0x14200 bored softnet 78986 415227 0 0 3 0x14200 bored systqmp 58366 81295 0 0 3 0x14200 bored systq 16870 217095 0 0 3 0x40014200 bored softclock 15395 202325 0 0 3 0x40014200 idle0 42291 466347 0 0 3 0x14200 bored smr 1 117011 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 22060 (syz-executor.1) thread 0xffff800020ab0290 (370804) exclusive rwlock netlock r = 0 (0xffffffff824d6738) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sys_connect+0x6b sys/kern/uipc_syscalls.c:362 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 2 (0xffffffff82666748) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9582 6634K 7212K 78643K 14294 0 0 pcb 13 8K 8K 78643K 292 0 0 rtable 111 8K 9K 78643K 1328 0 0 ifaddr 78 16K 18K 78643K 378 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1515 0 0 iov 0 0K 16K 78643K 371 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1212 76K 77K 78643K 2585 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 22 0 0 VM map 2 1K 1K 78643K 14 0 0 sem 12 1K 1K 78643K 612 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 1642 0 0 sigio 0 0K 0K 78643K 14 0 0 proc 62 63K 95K 78643K 1004 0 0 subproc 32 2K 2K 78643K 187 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 267 0 0 in_multi 26 1K 2K 78643K 222 0 0 ether_multi 1 0K 0K 78643K 5 0 0 mrt 0 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 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 489 0 0 pfkey data 0 0K 4K 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 108 22K 31K 78643K 6689 0 0 UVM aobj 65 3K 4K 78643K 85 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 362 0 0 NDP 18 0K 0K 78643K 121 0 0 temp 215 3560K 3630K 78643K 71739 0 0 kqueue 0 0K 0K 78643K 2 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 48 0 43 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 113 0 111 1 0 1 1 0 8 0 rtentry 112 245 0 204 2 0 2 2 0 8 0 unpcb 120 541 0 531 1 0 1 1 0 8 0 syncache 264 7 0 7 3 2 1 1 0 8 1 tcpqe 32 6987 0 6987 2 2 0 1 0 8 0 tcpcb 544 906 0 902 2 1 1 2 0 8 0 inpcb 280 1997 0 1989 6 4 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 33 0 31 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 ppxss 1128 43 0 43 4 3 1 1 0 8 1 pffrag 232 14 0 14 4 4 0 1 0 482 0 pffrnode 88 14 0 14 4 4 0 1 0 8 0 pffrent 40 29 0 29 4 4 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 24 102 0 55 1 0 1 1 0 8 0 pfstkey 112 102 0 55 2 0 2 2 0 8 0 pfstate 328 102 0 55 5 0 5 5 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 7 0 5 3 0 3 3 0 8 1 art_heap4 256 1048 0 826 19 4 15 15 0 8 0 art_table 32 1055 0 831 2 0 2 2 0 8 0 art_node 16 242 0 203 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 18 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 610 0 600 1 0 1 1 0 8 0 shmpl 112 83 0 20 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3874 0 2470 46 0 46 46 0 8 0 ffsino 272 3874 0 2470 95 0 95 95 0 8 0 nchpl 144 7302 0 6828 61 40 21 61 0 8 0 uvmvnodes 72 4871 0 0 89 0 89 89 0 8 0 vnodes 208 4871 0 0 257 0 257 257 0 8 0 namei 1024 23802 0 23802 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vmpool 552 12 0 12 3 2 1 1 0 8 1 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 20022 0 20022 18 17 1 7 0 8 1 plimitpl 152 144 0 136 1 0 1 1 0 8 0 sigapl 432 1816 0 1801 3 1 2 3 0 8 0 futexpl 56 36887 0 36887 1 0 1 1 0 8 1 knotepl 112 380 0 361 1 0 1 1 0 8 0 kqueuepl 104 291 0 289 1 0 1 1 0 8 0 pipepl 112 1222 0 1203 4 3 1 2 0 8 0 fdescpl 488 1817 0 1801 3 0 3 3 0 8 0 filepl 152 15297 0 15196 10 5 5 7 0 8 0 lockfpl 104 523 0 522 1 0 1 1 0 8 0 lockfspl 48 177 0 176 1 0 1 1 0 8 0 sessionpl 112 28 0 17 1 0 1 1 0 8 0 pgrppl 48 40 0 29 1 0 1 1 0 8 0 ucredpl 96 1737 0 1728 1 0 1 1 0 8 0 zombiepl 144 1801 0 1800 3 2 1 1 0 8 0 processpl 896 1834 0 1800 4 0 4 4 0 8 0 procpl 632 5477 0 5433 5 0 5 5 0 8 1 srpgc 64 5 0 5 3 3 0 1 0 8 0 sosppl 128 18 0 18 6 5 1 1 0 8 1 sockpl 384 2673 0 2653 9 5 4 4 0 8 2 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 18 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 201 0 0 23 3 20 23 0 8 0 mtagpl 80 43 0 0 1 0 1 1 0 8 0 mbufpl 256 323 0 0 13 0 13 13 0 8 0 bufpl 256 10959 0 3911 441 0 441 441 0 8 0 anonpl 16 201925 0 186376 112 39 73 81 0 124 1 amapchunkpl 152 13139 0 13032 37 29 8 19 0 158 2 amappl16 192 8536 0 7580 81 25 56 56 0 8 8 amappl15 184 511 0 511 1 1 0 1 0 8 0 amappl14 176 480 0 477 2 1 1 1 0 8 0 amappl13 168 10 0 9 2 1 1 1 0 8 0 amappl12 160 48 0 47 2 1 1 1 0 8 0 amappl11 152 546 0 528 1 0 1 1 0 8 0 amappl10 144 24 0 19 1 0 1 1 0 8 0 amappl9 136 890 0 883 1 0 1 1 0 8 0 amappl8 128 456 0 423 2 0 2 2 0 8 0 amappl7 120 79 0 72 1 0 1 1 0 8 0 amappl6 112 553 0 539 1 0 1 1 0 8 0 amappl5 104 258 0 244 1 0 1 1 0 8 0 amappl4 96 2098 0 2061 1 0 1 1 0 8 0 amappl3 88 481 0 475 1 0 1 1 0 8 0 amappl2 80 13297 0 13224 3 1 2 3 0 8 0 amappl1 72 50158 0 49720 27 17 10 20 0 8 0 amappl 80 5875 0 5838 2 0 2 2 0 84 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 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 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 84 0 20 2 0 2 2 0 8 0 uaddrrnd 24 1829 0 1801 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1829 0 1801 1 0 1 1 0 8 0 vmmpekpl 168 17391 0 17351 3 0 3 3 0 8 0 vmmpepl 168 231529 0 229426 208 84 124 129 0 357 28 vmsppl 368 1816 0 1801 2 0 2 2 0 8 0 pdppl 4096 3665 0 3626 7 1 6 6 0 8 0 pvpl 32 581926 0 563177 259 83 176 192 0 265 6 pmappl 232 1828 0 1813 5 3 2 2 0 8 1 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 624 0 14 18 0 18 18 0 8 0