`#'G:¨a ëR(ÿÿ²;î!†Xç`#'G:¨a ëR(ÿÿ²;î!†Xçpanic: attempt to execute user address 0x0 in supervisor mode Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 128335 93716 0 0 0 0 syz-executor.1 * 3661 93716 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(ffff8000233ad2b0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800021b86000,fffffd8063c7f628,10,ffff80000005bc50,ffff8000233ad518) at alltraps_kern_meltdown+0x7b 0(b,ffff8000233ad478,83,ffff8000233ad518,0,b) at 0 rt_clone(ffff8000233ad588,fffffd806f6d1710,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd806f6d1710,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd806f6d1710,0,0) at rtalloc_mpath+0xba sys/net/route.c:359 in_pcbselsrc(ffff8000233ad6a0,fffffd806d738120,fffffd806f6d1690) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 udp_output(fffffd806f6d1690,fffffd80615a9500,fffffd806d738100,0) at udp_output+0x5cf sys/netinet/udp_usrreq.c:937 sosend(fffffd80675951f0,fffffd806d738100,ffff8000233ad800,0,0,0) at sosend+0x645 sys/kern/uipc_socket.c:524 sendit(ffff800020a5f3c8,4,ffff8000233ad8e0,0,ffff8000233ad9c0) at sendit+0x52b sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020a5f3c8,ffff8000233ad978,ffff8000233ad9c0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff8000233ada40) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff8000233ada40) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 end trace frame: 0xffff8000233adac0, count: 0 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 0x0 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(ffff8000233ad2b0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800021b86000,fffffd8063c7f628,10,ffff80000005bc50,ffff8000233ad518) at alltraps_kern_meltdown+0x7b 0(b,ffff8000233ad478,83,ffff8000233ad518,0,b) at 0 rt_clone(ffff8000233ad588,fffffd806f6d1710,0) at rt_clone+0x78 sys/net/route.c:266 rtalloc_mpath(fffffd806f6d1710,0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] rtalloc_mpath(fffffd806f6d1710,0,0) at rtalloc_mpath+0xba sys/net/route.c:359 in_pcbselsrc(ffff8000233ad6a0,fffffd806d738120,fffffd806f6d1690) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 udp_output(fffffd806f6d1690,fffffd80615a9500,fffffd806d738100,0) at udp_output+0x5cf sys/netinet/udp_usrreq.c:937 sosend(fffffd80675951f0,fffffd806d738100,ffff8000233ad800,0,0,0) at sosend+0x645 sys/kern/uipc_socket.c:524 sendit(ffff800020a5f3c8,4,ffff8000233ad8e0,0,ffff8000233ad9c0) at sendit+0x52b sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020a5f3c8,ffff8000233ad978,ffff8000233ad9c0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff8000233ada40) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff8000233ada40) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffffd8,0,6,fd30d08e010) at Xsyscall+0x128 end of kernel end trace frame: 0xfd577d46af0, count: -15 ddb{1}> show registers rdi 0xffffffff8163efc7 db_enter+0x17 rsi 0x2ad9 __ALIGN_SIZE+0x1ad9 rbp 0xffff8000233ad120 rbx 0xffff8000233ad1d0 rdx 0x2ada __ALIGN_SIZE+0x1ada rcx 0xffff800021b86000 rax 0xffff800021b86000 r8 0xffffffff8178440f kprintf+0x16f r9 0x1 r10 0x25 r11 0x4b83e0b8873f3d51 r12 0x3000000008 r13 0xffff8000233ad130 r14 0x100 r15 0x1 rip 0xffffffff8163efc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000233ad110 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=3661 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020a5e770,0xffffffff82646fa0 process=0xffff800020adc700 user=0xffff8000233a8000, vmspace=0xfffffd807f00a5c0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93716 128335 76366 0 7 0 syz-executor.1 *93716 3661 76366 0 7 0x4000000 syz-executor.1 76366 147765 39064 0 3 0x82 nanosleep syz-executor.1 64329 476572 39064 0 2 0x2 syz-executor.0 4119 497088 0 0 3 0x14200 acct acct 78768 235971 0 0 3 0x14200 bored sosplice 39064 179989 73092 0 3 0x82 thrsleep syz-fuzzer 39064 169843 73092 0 3 0x4000082 nanosleep syz-fuzzer 39064 221513 73092 0 3 0x4000082 thrsleep syz-fuzzer 39064 40614 73092 0 3 0x4000082 thrsleep syz-fuzzer 39064 420857 73092 0 3 0x4000082 kqread syz-fuzzer 39064 424410 73092 0 3 0x4000082 thrsleep syz-fuzzer 39064 124219 73092 0 3 0x4000082 nanosleep syz-fuzzer 39064 55837 73092 0 3 0x4000082 thrsleep syz-fuzzer 39064 25539 73092 0 3 0x4000082 thrsleep syz-fuzzer 39064 462488 73092 0 3 0x4000082 thrsleep syz-fuzzer 73092 258316 88082 0 3 0x10008a pause ksh 88082 303648 18142 0 3 0x92 select sshd 35866 363454 1 0 3 0x100083 ttyopn getty 18142 268384 1 0 3 0x80 select sshd 8173 229834 93106 74 3 0x100092 bpf pflogd 93106 396261 1 0 3 0x80 netio pflogd 24734 412272 9660 73 3 0x100090 kqread syslogd 9660 54504 1 0 3 0x100082 netio syslogd 96019 295875 1 77 3 0x100090 poll dhclient 45098 347811 1 0 3 0x80 poll dhclient 922 147833 0 0 3 0x14200 pgzero zerothread 31564 99022 0 0 3 0x14200 aiodoned aiodoned 65703 299278 0 0 3 0x14200 syncer update 685 307803 0 0 3 0x14200 cleaner cleaner 75147 491934 0 0 3 0x14200 reaper reaper 53463 8121 0 0 3 0x14200 pgdaemon pagedaemon 74040 280947 0 0 3 0x14200 bored crynlk 34703 370040 0 0 3 0x14200 bored crypto 63490 13145 0 0 3 0x40014200 acpi0 acpi0 54623 291838 0 0 3 0x40014200 idle1 12537 38037 0 0 3 0x14200 bored softnet 83586 480407 0 0 3 0x14200 bored systqmp 4741 472237 0 0 3 0x14200 bored systq 33026 494739 0 0 3 0x40014200 bored softclock 69506 21347 0 0 3 0x40014200 idle0 65691 217767 0 0 3 0x14200 bored smr 1 484198 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 93716 (syz-executor.1) thread 0xffff800020a5f3c8 (3661) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82677638) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rt_clone+0x5c sys/net/route.c:266 #2 rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline] #2 rtalloc_mpath+0xba sys/net/route.c:359 #3 in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 #4 udp_output+0x5cf sys/netinet/udp_usrreq.c:937 #5 sosend+0x645 sys/kern/uipc_socket.c:524 #6 sendit+0x52b sys/kern/uipc_syscalls.c:662 #7 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #9 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff824d4548) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x51b sys/kern/uipc_socket.c:512 #3 sendit+0x52b sys/kern/uipc_syscalls.c:662 #4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9601 6823K 8569K 78643K 21278 0 0 pcb 13 8K 9K 78643K 381 0 0 rtable 122 13K 13K 78643K 1274 0 0 ifaddr 83 18K 18K 78643K 366 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1587 0 0 iov 0 0K 24K 78643K 377 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1229 77K 78K 78643K 4314 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 23 0 0 VM map 13 6K 7K 78643K 18 0 0 sem 12 0K 1K 78643K 419 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 1888 0 0 sigio 0 0K 0K 78643K 7 0 0 proc 62 63K 83K 78643K 1177 0 0 subproc 32 2K 2K 78643K 238 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 369 0 0 in_multi 35 2K 2K 78643K 270 0 0 ether_multi 1 0K 0K 78643K 17 0 0 mrt 0 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 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 564 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 148 118K 118K 78643K 7495 0 0 UVM aobj 115 5K 5K 78643K 141 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 440 0 0 NDP 18 0K 0K 78643K 114 0 0 temp 196 3556K 4196K 78643K 86649 0 0 kqueue 0 0K 0K 78643K 13 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 40 0 34 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 185 0 183 1 0 1 1 0 8 0 rtentry 112 218 0 170 2 0 2 2 0 8 0 unpcb 120 1363 0 1352 3 2 1 2 0 8 0 syncache 264 15 0 15 7 6 1 1 0 8 1 tcpqe 32 35 0 35 4 3 1 1 0 8 1 tcpcb 544 1135 0 1131 4 3 1 3 0 8 0 inpcb 280 3658 0 3650 8 6 2 4 0 8 1 rttmr 72 3 0 3 3 3 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 29 0 25 1 0 1 1 0 8 0 pkpcb 40 14 0 14 3 3 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 39 0 39 4 3 1 1 0 8 1 pffrag 232 68 0 68 3 3 0 1 0 482 0 pffrnode 88 68 0 68 3 3 0 1 0 8 0 pffrent 40 2368 0 2368 3 3 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 24 161 0 83 1 0 1 1 0 8 0 pfstkey 112 161 0 83 3 0 3 3 0 8 0 pfstate 328 161 0 83 8 0 8 8 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 877 0 637 23 8 15 16 0 8 0 art_table 32 879 0 637 3 1 2 3 0 8 0 art_node 16 215 0 171 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 12 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 417 0 407 1 0 1 1 0 8 0 shmpl 112 139 0 26 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4279 0 2870 46 0 46 46 0 8 0 ffsino 272 4279 0 2870 95 0 95 95 0 8 0 nchpl 144 7325 0 6863 61 41 20 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 26757 0 26757 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 552 16 0 5 1 0 1 1 0 8 0 scsiplug 64 4 0 4 2 2 0 1 0 8 0 scxspl 192 24232 0 24232 16 15 1 4 0 8 1 plimitpl 152 196 0 188 1 0 1 1 0 8 0 sigapl 432 2050 0 2035 3 1 2 3 0 8 0 futexpl 56 45011 0 45011 1 0 1 1 0 8 1 knotepl 112 443 0 424 2 1 1 2 0 8 0 kqueuepl 104 482 0 480 1 0 1 1 0 8 0 pipepl 112 1166 0 1147 1 0 1 1 0 8 0 fdescpl 488 2051 0 2035 3 0 3 3 0 8 0 filepl 152 18397 0 18295 13 7 6 7 0 8 2 lockfpl 104 789 0 788 1 0 1 1 0 8 0 lockfspl 48 233 0 232 1 0 1 1 0 8 0 sessionpl 112 30 0 19 1 0 1 1 0 8 0 pgrppl 48 64 0 53 1 0 1 1 0 8 0 ucredpl 96 2191 0 2182 1 0 1 1 0 8 0 zombiepl 144 2036 0 2036 1 0 1 1 0 8 1 processpl 896 2069 0 2036 4 0 4 4 0 8 0 procpl 632 6084 0 6041 5 0 5 5 0 8 1 srpgc 64 20 0 20 7 7 0 1 0 8 0 sosppl 128 42 0 42 5 5 0 1 0 8 0 sockpl 384 5251 0 5230 17 13 4 8 0 8 1 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 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 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 167 0 0 19 0 19 19 0 8 0 mtagpl 80 59 0 0 2 0 2 2 0 8 0 mbufpl 256 443 0 0 24 0 24 24 0 8 0 bufpl 256 11877 0 4819 442 0 442 442 0 8 0 anonpl 16 245499 0 228357 132 45 87 99 0 124 4 amapchunkpl 152 14448 0 14288 33 25 8 14 0 158 0 amappl16 192 9790 0 8667 102 44 58 69 0 8 0 amappl15 184 593 0 588 1 0 1 1 0 8 0 amappl14 176 830 0 825 1 0 1 1 0 8 0 amappl13 168 189 0 188 4 3 1 1 0 8 0 amappl12 160 267 0 266 1 0 1 1 0 8 0 amappl11 152 93 0 78 1 0 1 1 0 8 0 amappl10 144 115 0 109 1 0 1 1 0 8 0 amappl9 136 849 0 845 1 0 1 1 0 8 0 amappl8 128 419 0 374 3 1 2 2 0 8 0 amappl7 120 197 0 189 1 0 1 1 0 8 0 amappl6 112 74 0 63 1 0 1 1 0 8 0 amappl5 104 514 0 498 1 0 1 1 0 8 0 amappl4 96 1553 0 1517 1 0 1 1 0 8 0 amappl3 88 1753 0 1748 1 0 1 1 0 8 0 amappl2 80 15242 0 15162 3 1 2 3 0 8 0 amappl1 72 55445 0 55003 26 16 10 20 0 8 0 amappl 80 6574 0 6518 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 64 140 0 26 2 0 2 2 0 8 0 uaddrrnd 24 2067 0 2035 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2067 0 2035 1 0 1 1 0 8 0 vmmpekpl 168 19180 0 19143 2 0 2 2 0 8 0 vmmpepl 168 268538 0 266220 188 41 147 147 0 357 38 vmsppl 368 2050 0 2035 2 0 2 2 0 8 0 pdppl 4096 4141 0 4091 8 1 7 7 0 8 0 pvpl 32 685325 0 664939 265 48 217 229 0 265 25 pmappl 232 2066 0 2040 2 0 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 638 0 15 18 0 18 18 0 8 0