panic: attempt to execute user address 0xf7 in supervisor mode Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 279137 91103 0 0 0 0 syz-executor.1 *297727 77268 0 0 0x4000000 1K syz-executor.0 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(ffff800022d79560) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800020b4a000,fffffd8066131938,10,ffff80000005b3d0,ffff800022d797c8) at alltraps_kern_meltdown+0x7b f7(b,ffff800022d79728,83,ffff800022d797c8,0,b) at 0xf7 rt_clone(ffff800022d79838,fffffd806f6c7c88,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd806f6c7c88,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd806f6c7c88,0,0) at rtalloc_mpath+0xba sys/net/route.c:359 in_pcbselsrc(ffff800022d79910,fffffd805f8c0320,fffffd806f6c7c08) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd806f6c7c08,fffffd805f8c0300) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd80731d6318,4,0,fffffd805f8c0300,0,ffff800020acec78) at udp_usrreq+0x560 sys_connect(ffff800020acec78,ffff800022d79a98,ffff800022d79ae0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff800022d79b60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800022d79b60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,63e63a10010) at Xsyscall+0x128 end of kernel end trace frame: 0x64159c86b90, 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 0xf7 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(ffff800022d79560) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800020b4a000,fffffd8066131938,10,ffff80000005b3d0,ffff800022d797c8) at alltraps_kern_meltdown+0x7b f7(b,ffff800022d79728,83,ffff800022d797c8,0,b) at 0xf7 rt_clone(ffff800022d79838,fffffd806f6c7c88,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd806f6c7c88,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd806f6c7c88,0,0) at rtalloc_mpath+0xba sys/net/route.c:359 in_pcbselsrc(ffff800022d79910,fffffd805f8c0320,fffffd806f6c7c08) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd806f6c7c08,fffffd805f8c0300) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd80731d6318,4,0,fffffd805f8c0300,0,ffff800020acec78) at udp_usrreq+0x560 sys_connect(ffff800020acec78,ffff800022d79a98,ffff800022d79ae0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff800022d79b60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800022d79b60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,63e63a10010) at Xsyscall+0x128 end of kernel end trace frame: 0x64159c86b90, count: -14 ddb{1}> show registers rdi 0xffffffff81e07517 db_enter+0x17 rsi 0x273e __ALIGN_SIZE+0x173e rbp 0xffff800022d793d0 rbx 0xffff800022d79480 rdx 0x273f __ALIGN_SIZE+0x173f rcx 0xffff800020b4a000 rax 0xffff800020b4a000 r8 0xffffffff817fb7bf kprintf+0x16f r9 0x1 r10 0x25 r11 0x7b6c9f779c83ae5d r12 0x3000000008 r13 0xffff800022d793e0 r14 0x100 r15 0x1 rip 0xffffffff81e07518 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022d793c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=297727 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020acf168,0xffff800020acfb58 process=0xffff800020adc380 user=0xffff800022d74000, vmspace=0xfffffd807f00a170 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91103 279137 83726 0 7 0 syz-executor.1 91103 217042 83726 0 2 0x4000000 syz-executor.1 77268 269 32283 0 2 0 syz-executor.0 *77268 297727 32283 0 7 0x4000000 syz-executor.0 77268 210480 32283 0 3 0x4000080 fsleep syz-executor.0 83726 371919 83408 0 3 0x82 nanosleep syz-executor.1 32283 344508 83408 0 3 0x82 nanosleep syz-executor.0 94061 391632 0 0 3 0x14200 acct acct 84538 7793 1 0 3 0x100083 ttyin getty 75931 153826 0 0 3 0x14200 bored sosplice 83408 131531 91700 0 3 0x82 thrsleep syz-fuzzer 83408 160816 91700 0 3 0x4000082 nanosleep syz-fuzzer 83408 326646 91700 0 3 0x4000082 thrsleep syz-fuzzer 83408 114776 91700 0 3 0x4000082 thrsleep syz-fuzzer 83408 368740 91700 0 3 0x4000082 thrsleep syz-fuzzer 83408 216410 91700 0 3 0x4000082 kqread syz-fuzzer 83408 83465 91700 0 3 0x4000082 thrsleep syz-fuzzer 83408 98218 91700 0 3 0x4000082 thrsleep syz-fuzzer 83408 169878 91700 0 3 0x4000082 nanosleep syz-fuzzer 83408 82127 91700 0 3 0x4000082 thrsleep syz-fuzzer 91700 26731 67709 0 3 0x10008a pause ksh 67709 313891 95472 0 3 0x92 select sshd 95472 118057 1 0 3 0x80 select sshd 76417 465532 28552 74 3 0x100092 bpf pflogd 28552 293196 1 0 3 0x80 netio pflogd 77016 107474 21596 73 3 0x100090 kqread syslogd 21596 322289 1 0 3 0x100082 netio syslogd 13019 331936 1 77 3 0x100090 poll dhclient 73264 220793 1 0 3 0x80 poll dhclient 86140 183826 0 0 2 0x14200 zerothread 51271 505667 0 0 3 0x14200 aiodoned aiodoned 8344 400397 0 0 3 0x14200 syncer update 95207 240397 0 0 3 0x14200 cleaner cleaner 37829 129873 0 0 3 0x14200 reaper reaper 93355 43187 0 0 3 0x14200 pgdaemon pagedaemon 26024 28924 0 0 3 0x14200 bored crynlk 98778 418906 0 0 3 0x14200 bored crypto 28635 123147 0 0 3 0x40014200 acpi0 acpi0 36253 388713 0 0 3 0x40014200 idle1 44564 428435 0 0 3 0x14200 bored softnet 27233 311577 0 0 3 0x14200 bored systqmp 45327 353539 0 0 3 0x14200 bored systq 74727 124674 0 0 3 0x40014200 bored softclock 67449 218697 0 0 3 0x40014200 idle0 81485 102770 0 0 3 0x14200 bored smr 1 56845 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 77268 (syz-executor.0) thread 0xffff800020acec78 (297727) exclusive rwlock netlock r = 0 (0xffffffff82485b08) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 uvn_io+0x3b2 sys/uvm/uvm_vnode.c:1206 #2 uvn_get+0x226 sys/uvm/uvm_vnode.c:1049 #3 uvm_fault+0x11cc sys/uvm/uvm_fault.c:1023 #4 pageflttrap+0x20b sys/arch/amd64/amd64/trap.c:199 #5 kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 #6 alltraps_kern_meltdown+0x7b #7 copyin+0x4b #8 sys_connect+0x9c sys/kern/uipc_syscalls.c:367 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 2 (0xffffffff826408b0) #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 9638 6486K 15198K 78643K 62960 0 0 pcb 13 12K 14K 78643K 4289 0 0 rtable 111 13K 15K 78643K 14253 0 0 ifaddr 100 37K 50K 78643K 4567 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 2266 0 0 iov 0 0K 32K 78643K 5001 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1207 76K 77K 78643K 21828 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 392 0 0 VM map 2 1K 1K 78643K 101 0 0 sem 12 0K 1K 78643K 3503 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 23703 0 0 sigio 0 0K 0K 78643K 216 0 0 proc 62 63K 95K 78643K 8319 0 0 subproc 32 2K 2K 78643K 2115 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 1593 0 0 in_multi 17 1K 2K 78643K 2493 0 0 ether_multi 1 0K 0K 78643K 106 0 0 mrt 1 0K 0K 78643K 105 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 126 556K 556K 78643K 126 0 0 exec 0 0K 1K 78643K 4474 0 0 pfkey data 0 0K 0K 78643K 5 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 150 24K 37K 78643K 83136 0 0 UVM aobj 130 8K 8K 78643K 150 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 4726 0 0 NDP 24 0K 1K 78643K 1459 0 0 temp 256 3557K 4199K 78643K 597515 0 0 kqueue 0 0K 0K 78643K 136 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 64 459 0 454 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 1699 0 1697 1 0 1 1 0 8 0 rtentry 112 2232 0 2194 2 0 2 2 0 8 0 unpcb 120 15840 0 15820 33 31 2 3 0 8 0 syncache 264 68 0 68 33 33 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 5739 0 5739 5 5 0 2 0 8 0 tcpcb 544 8466 0 8462 77 76 1 13 0 8 0 inpcb 280 29740 0 29730 178 176 2 13 0 8 1 rttmr 72 29 0 28 4 3 1 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 48 343 0 343 11 10 1 1 0 8 1 pkpcb 40 72 0 72 29 29 0 1 0 8 0 swfcl 56 10 0 0 1 0 1 1 0 8 0 ppxss 1128 704 0 704 62 61 1 1 0 8 1 pffrag 232 260 0 260 68 68 0 1 0 482 0 pffrnode 88 260 0 260 68 68 0 1 0 8 0 pffrent 40 585 0 585 71 71 0 1 0 8 0 pfosfp 40 846 0 846 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfstitem 24 1454 0 1383 1 0 1 1 0 8 0 pfstkey 112 1455 0 1384 7 4 3 3 0 8 0 pfstate 328 1455 0 1384 13 7 6 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 58 0 57 28 27 1 3 0 8 0 art_heap4 256 10426 0 10149 104 82 22 26 0 8 0 art_table 32 10484 0 10206 10 6 4 4 0 8 0 art_node 16 2221 0 2185 1 0 1 1 0 8 0 sysvmsgpl 40 70 0 32 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 3501 0 3491 1 0 1 1 0 8 0 shmpl 112 148 0 20 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 38252 0 36732 51 1 50 50 0 8 0 ffsino 272 38252 0 36732 107 5 102 102 0 8 0 nchpl 144 85917 0 85415 61 41 20 61 0 8 0 uvmvnodes 72 10432 0 0 190 0 190 190 0 8 0 vnodes 208 10432 0 0 550 0 550 550 0 8 0 namei 1024 348562 0 348562 6 5 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vmpool 552 99 0 99 44 44 0 1 0 8 0 scsiplug 64 23 0 23 13 13 0 1 0 8 0 scxspl 192 233665 0 233665 146 145 1 7 0 8 1 plimitpl 152 2055 0 2047 1 0 1 1 0 8 0 sigapl 432 23546 0 23530 6 4 2 3 0 8 0 futexpl 56 541590 0 541589 3 2 1 1 0 8 0 knotepl 112 5695 0 5676 20 19 1 3 0 8 0 kqueuepl 104 6330 0 6328 19 18 1 4 0 8 0 pipepl 112 23630 0 23611 83 82 1 2 0 8 0 fdescpl 488 23547 0 23530 3 0 3 3 0 8 0 filepl 152 221022 0 220920 232 225 7 16 0 8 3 lockfpl 104 9438 0 9437 1 0 1 1 0 8 0 lockfspl 48 2970 0 2969 1 0 1 1 0 8 0 sessionpl 112 149 0 138 1 0 1 1 0 8 0 pgrppl 48 383 0 372 1 0 1 1 0 8 0 ucredpl 96 26748 0 26737 1 0 1 1 0 8 0 zombiepl 144 23537 0 23537 5 4 1 1 0 8 1 processpl 896 23571 0 23537 7 3 4 5 0 8 0 procpl 632 76010 0 75964 5 0 5 5 0 8 0 srpgc 64 166 0 166 56 55 1 1 0 8 1 sosppl 128 2503 0 2503 57 56 1 1 0 8 1 sockpl 384 47527 0 47497 404 396 8 23 0 8 4 mcl64k 65536 1241 0 0 137 114 23 65 0 8 1 mcl16k 16384 73 0 0 9 6 3 3 0 8 0 mcl12k 12288 81 0 0 3 1 2 2 0 8 0 mcl9k 9216 56 0 0 3 1 2 2 0 8 0 mcl8k 8192 52 0 0 5 2 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 276 0 0 25 16 9 25 0 8 0 mtagpl 80 342 0 0 1 0 1 1 0 8 0 mbufpl 256 1855 0 0 39 1 38 39 0 8 0 bufpl 256 79210 0 68776 653 0 653 653 0 8 0 anonpl 16 2495653 0 2479586 517 444 73 95 0 124 0 amapchunkpl 152 165594 0 165480 267 258 9 19 0 158 2 amappl16 192 119689 0 118679 595 543 52 68 0 8 0 amappl15 184 6979 0 6977 1 0 1 1 0 8 0 amappl14 176 3608 0 3607 2 1 1 1 0 8 0 amappl13 168 3293 0 3291 19 18 1 1 0 8 0 amappl12 160 1992 0 1991 1 0 1 1 0 8 0 amappl11 152 2316 0 2301 1 0 1 1 0 8 0 amappl10 144 2362 0 2359 1 0 1 1 0 8 0 amappl9 136 5890 0 5883 1 0 1 1 0 8 0 amappl8 128 5300 0 5243 4 2 2 3 0 8 0 amappl7 120 2933 0 2923 1 0 1 1 0 8 0 amappl6 112 2042 0 2021 1 0 1 1 0 8 0 amappl5 104 3286 0 3273 1 0 1 1 0 8 0 amappl4 96 24476 0 24439 1 0 1 1 0 8 0 amappl3 88 4522 0 4517 1 0 1 1 0 8 0 amappl2 80 185733 0 185649 4 2 2 3 0 8 0 amappl1 72 533707 0 533253 25 15 10 20 0 8 0 amappl 80 78462 0 78422 3 1 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 64 149 0 20 3 0 3 3 0 8 0 uaddrrnd 24 23646 0 23530 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 23646 0 23530 1 0 1 1 0 8 0 vmmpekpl 168 210362 0 210327 3 0 3 3 0 8 0 vmmpepl 168 2952382 0 2950084 922 786 136 141 0 357 29 vmsppl 368 23546 0 23530 2 0 2 2 0 8 0 pdppl 4096 47299 0 47258 7 1 6 6 0 8 0 pvpl 32 6574477 0 6555023 1023 840 183 221 0 265 12 pmappl 232 23645 0 23629 37 36 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1209 0 338 27 1 26 26 0 8 0