g Ăg Ăpanic: attempt to execute user address 0x0 in supervisor mode Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 97418 94869 0 0 0x4000000 0 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+0x3eb kerntrap(ffff80001490f770) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800016b49000,fffffd803a14dd98,10,ffff80000005bd50,ffff80001490f9d8) at alltraps_kern_meltdown+0x7b 0(b,ffff80001490f938,83,ffff80001490f9d8,0,b) at 0 rt_match(fffffd803a816198,fffffd80386e3ff0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd803a816198,fffffd80386e3ff0,1,0) at rt_match+0xbe sys/net/route.c:242 ip_output(fffffd80386e3f00,0,fffffd803a816188,20,0,fffffd803a816118) at ip_output+0x4d2 sys/netinet/ip_output.c:204 rip_output(fffffd80386e3f00,fffffd80047c14a0,ffff80001490fbe8,ffff800016b49000) at rip_output+0x22b sys/netinet/raw_ip.c:289 rip_usrreq(fffffd80047c14a0,9,fffffd80386e3f00,0,0,ffff8000149153d8) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 gre_usrreq(fffffd80047c14a0,9,fffffd80386e3f00,0,0,ffff8000149153d8) at gre_usrreq+0x185 sys/netinet/ip_gre.c:94 sosend(fffffd80047c14a0,0,ffff80001490fe00,0,0,80) at sosend+0x63d sys/kern/uipc_socket.c:524 sendit(ffff8000149153d8,3,ffff80001490fee0,0,ffff80001490ffc0) at sendit+0x52b sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000149153d8,ffff80001490ff78,ffff80001490ffc0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 end trace frame: 0xffff800014910030, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic attempt to execute user address 0x0 in supervisor mode ddb> 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+0x3eb kerntrap(ffff80001490f770) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800016b49000,fffffd803a14dd98,10,ffff80000005bd50,ffff80001490f9d8) at alltraps_kern_meltdown+0x7b 0(b,ffff80001490f938,83,ffff80001490f9d8,0,b) at 0 rt_match(fffffd803a816198,fffffd80386e3ff0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd803a816198,fffffd80386e3ff0,1,0) at rt_match+0xbe sys/net/route.c:242 ip_output(fffffd80386e3f00,0,fffffd803a816188,20,0,fffffd803a816118) at ip_output+0x4d2 sys/netinet/ip_output.c:204 rip_output(fffffd80386e3f00,fffffd80047c14a0,ffff80001490fbe8,ffff800016b49000) at rip_output+0x22b sys/netinet/raw_ip.c:289 rip_usrreq(fffffd80047c14a0,9,fffffd80386e3f00,0,0,ffff8000149153d8) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 gre_usrreq(fffffd80047c14a0,9,fffffd80386e3f00,0,0,ffff8000149153d8) at gre_usrreq+0x185 sys/netinet/ip_gre.c:94 sosend(fffffd80047c14a0,0,ffff80001490fe00,0,0,80) at sosend+0x63d sys/kern/uipc_socket.c:524 sendit(ffff8000149153d8,3,ffff80001490fee0,0,ffff80001490ffc0) at sendit+0x52b sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000149153d8,ffff80001490ff78,ffff80001490ffc0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800014910040) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffffd8,0,6,6e71fca2010) at Xsyscall+0x128 end of kernel end trace frame: 0x6e9fe2d5140, count: -16 ddb> show registers rdi 0xffffffff812241d7 db_enter+0x17 rsi 0x22f5 __ALIGN_SIZE+0x12f5 rbp 0xffff80001490f5e0 rbx 0xffff80001490f690 rdx 0x22f6 __ALIGN_SIZE+0x12f6 rcx 0xffff800016b49000 rax 0xffff800016b49000 r8 0xffff80001490f5a0 r9 0x1 r10 0xffff800000a630c0 r11 0xa5f82e19729ba7a5 r12 0x3000000008 r13 0xffff80001490f5f0 r14 0x100 r15 0x1 rip 0xffffffff812241d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001490f5d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=97418 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800014914508,0xffffffff825686e0 process=0xffff8000ffff6a30 user=0xffff80001490b000, vmspace=0xfffffd803f013dd0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94869 274076 96758 0 2 0 syz-executor.1 *94869 97418 96758 0 7 0x4000000 syz-executor.1 96558 187651 97357 0 2 0x2 syz-executor.0 59927 304097 0 0 3 0x14200 bored sosplice 96758 390379 97357 0 3 0x82 nanosleep syz-executor.1 97357 515382 27118 0 3 0x82 thrsleep syz-fuzzer 97357 382412 27118 0 3 0x4000082 nanosleep syz-fuzzer 97357 276795 27118 0 3 0x4000082 thrsleep syz-fuzzer 97357 175798 27118 0 3 0x4000082 thrsleep syz-fuzzer 97357 402945 27118 0 3 0x4000082 kqread syz-fuzzer 97357 106603 27118 0 3 0x4000082 thrsleep syz-fuzzer 97357 430204 27118 0 3 0x4000082 thrsleep syz-fuzzer 27118 448537 82591 0 3 0x10008a pause ksh 82591 367002 64146 0 3 0x92 select sshd 81044 248846 1 0 3 0x100083 ttyin getty 64146 331783 1 0 3 0x80 select sshd 7814 114851 11493 73 3 0x100090 kqread syslogd 11493 141656 1 0 3 0x100082 netio syslogd 78164 327939 1 77 3 0x100090 poll dhclient 95503 140253 1 0 3 0x80 poll dhclient 90591 394219 0 0 2 0x14200 zerothread 3781 430014 0 0 3 0x14200 aiodoned aiodoned 99720 213706 0 0 3 0x14200 syncer update 65609 405820 0 0 3 0x14200 cleaner cleaner 94435 372182 0 0 3 0x14200 reaper reaper 77331 205004 0 0 3 0x14200 pgdaemon pagedaemon 64178 44346 0 0 3 0x14200 bored crynlk 61087 377731 0 0 3 0x14200 bored crypto 70185 348901 0 0 3 0x40014200 acpi0 acpi0 61422 82019 0 0 3 0x14200 bored softnet 64801 396189 0 0 3 0x14200 bored systqmp 39733 431137 0 0 3 0x14200 bored systq 5280 432029 0 0 3 0x40014200 bored softclock 44659 42278 0 0 3 0x40014200 idle0 38562 1321 0 0 3 0x14200 bored smr 1 410326 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9532 6357K 6850K 78643K 12283 0 0 pcb 13 10K 12K 78643K 560 0 0 rtable 101 8K 9K 78643K 589 0 0 ifaddr 64 14K 14K 78643K 176 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 33 0 0 iov 0 0K 16K 78643K 426 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1219 77K 77K 78643K 1888 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 0K 0K 78643K 4 0 0 sem 12 1K 1K 78643K 118 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 707 0 0 sigio 2 0K 0K 78643K 9 0 0 proc 49 38K 54K 78643K 464 0 0 subproc 32 2K 2K 78643K 68 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 499 0 0 in_multi 23 1K 2K 78643K 88 0 0 ether_multi 1 0K 0K 78643K 1 0 0 mrt 0 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 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 264 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 98 21K 25K 78643K 2576 0 0 UVM aobj 15 2K 2K 78643K 20 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 170 0 0 NDP 14 0K 0K 78643K 52 0 0 temp 184 3531K 3611K 78643K 16737 0 0 kqueue 0 0K 0K 78643K 3 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 20 0 15 1 0 1 1 0 8 0 rtpcb 80 51 0 49 1 0 1 1 0 8 0 rtentry 112 107 0 71 2 0 2 2 0 8 0 unpcb 120 488 0 478 2 1 1 2 0 8 0 syncache 264 10 0 10 4 3 1 1 0 8 1 tcpqe 32 6670 0 6670 4 3 1 2 0 8 1 tcpcb 544 764 0 760 4 3 1 2 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 8 0 8 1 1 0 1 0 8 0 inpcb 280 1836 0 1828 14 12 2 13 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 12 0 10 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 17 0 17 3 3 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 460 0 275 15 1 14 15 0 8 0 art_table 32 461 0 275 2 0 2 2 0 8 0 art_node 16 104 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 110 0 100 1 0 1 1 0 8 0 shmpl 112 18 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2468 0 1080 46 0 46 46 0 8 0 ffsino 240 2468 0 1080 83 0 83 83 0 8 0 nchpl 144 3813 0 2210 60 0 60 60 0 8 0 uvmvnodes 72 3009 0 0 55 0 55 55 0 8 0 vnodes 208 3009 0 0 159 0 159 159 0 8 0 namei 1024 11148 0 11148 3 2 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 11677 0 11677 11 10 1 7 0 8 1 plimitpl 152 82 0 75 1 0 1 1 0 8 0 sigapl 432 872 0 859 2 0 2 2 0 8 0 futexpl 56 19178 0 19178 1 0 1 1 0 8 1 knotepl 112 186 0 167 1 0 1 1 0 8 0 kqueuepl 104 175 0 173 1 0 1 1 0 8 0 pipepl 112 460 0 441 3 2 1 2 0 8 0 fdescpl 424 873 0 859 2 0 2 2 0 8 0 filepl 120 7175 0 7079 12 8 4 11 0 8 1 lockfpl 104 179 0 178 1 0 1 1 0 8 0 lockfspl 48 67 0 66 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 29 0 19 1 0 1 1 0 8 0 ucredpl 96 715 0 708 1 0 1 1 0 8 0 zombiepl 144 859 0 859 3 2 1 1 0 8 1 processpl 864 888 0 859 4 0 4 4 0 8 0 procpl 632 1791 0 1755 5 1 4 5 0 8 0 sosppl 128 9 0 9 3 3 0 1 0 8 0 sockpl 384 2393 0 2373 25 21 4 22 0 8 1 mcl64k 65536 575 0 575 62 34 28 33 0 8 28 mcl16k 16384 13 0 13 4 3 1 1 0 8 1 mcl12k 12288 29 0 29 3 2 1 1 0 8 1 mcl9k 9216 11 0 11 3 2 1 1 0 8 1 mcl8k 8192 22 0 22 2 1 1 1 0 8 1 mcl4k 4096 105 0 105 2 1 1 1 0 8 1 mcl2k2 2112 4 0 4 3 2 1 1 0 8 1 mcl2k 2048 50534 0 50489 28 21 7 22 0 8 0 mtagpl 80 34 0 30 2 1 1 1 0 8 0 mbufpl 256 90120 0 90020 48 29 19 27 0 8 8 bufpl 256 10853 0 3650 451 0 451 451 0 8 0 anonpl 16 119523 0 104487 100 23 77 77 0 62 14 amapchunkpl 152 4831 0 4722 29 15 14 19 0 158 9 amappl16 192 5310 0 4465 76 25 51 55 0 8 8 amappl14 176 369 0 363 2 1 1 1 0 8 0 amappl12 160 19 0 16 1 0 1 1 0 8 0 amappl11 152 257 0 246 1 0 1 1 0 8 0 amappl10 144 122 0 121 3 2 1 1 0 8 0 amappl9 136 602 0 596 1 0 1 1 0 8 0 amappl8 128 185 0 157 1 0 1 1 0 8 0 amappl7 120 153 0 149 1 0 1 1 0 8 0 amappl6 112 272 0 264 1 0 1 1 0 8 0 amappl5 104 165 0 152 1 0 1 1 0 8 0 amappl4 96 1098 0 1072 1 0 1 1 0 8 0 amappl3 88 477 0 471 1 0 1 1 0 8 0 amappl2 80 6062 0 5994 4 2 2 3 0 8 0 amappl1 72 25279 0 24870 34 26 8 20 0 8 0 amappl 80 2046 0 2009 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 19 0 5 1 0 1 1 0 8 0 uaddrrnd 24 875 0 859 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 875 0 859 1 0 1 1 0 8 0 vmmpekpl 168 9825 0 9802 2 0 2 2 0 8 0 vmmpepl 168 110535 0 108642 173 66 107 114 0 357 24 vmsppl 272 872 0 859 2 1 1 2 0 8 0 pdppl 4096 1756 0 1722 6 1 5 6 0 8 0 pvpl 32 407936 0 389847 301 51 250 267 0 265 102 pmappl 200 874 0 861 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 716 0 99 18 0 18 18 0 8 0