uvm_fault(0xfffffd8073dff558, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x7b: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *173494 60693 0 0 0x4000000 0 syz-executor.3 socreate(18,ffff80002cdcd368,0,29) at socreate+0x7b sys/kern/uipc_socket.c:172 sys_socket(ffff80002160d500,ffff80002cdcd3f8,ffff80002cdcd450) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002cdcd4c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd8d41688f40, count: 11 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 *cpu0: uvm_fault(0xfffffd8073dff558, 0x0, 0, 1) -> e ddb> trace socreate(18,ffff80002cdcd368,0,29) at socreate+0x7b sys/kern/uipc_socket.c:172 sys_socket(ffff80002160d500,ffff80002cdcd3f8,ffff80002cdcd450) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002cdcd4c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd8d41688f40, count: -4 ddb> show registers rdi 0xffff8000216c4000 rsi 0x16 rbp 0xffff80002cdcd350 rbx 0x18 rdx 0xffff8000216c4000 rcx 0x15 rax 0 r8 0xffffffff8152fd20 uvm_map_inentry_pc r9 0x15 r10 0 r11 0x2693c069d112ee55 r12 0xffff80002cdcd368 r13 0xffffffff826dd470 inet6sw r14 0 r15 0x29 rip 0xffffffff81b2452b socreate+0x7b cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80002cdcd2f0 ss 0x10 socreate+0x7b: cmpq $0,0(%rax) ddb> show proc PROC (syz-executor.3) pid=173494 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002160c000,0xffff80002160ca90 process=0xffff8000230cf798 user=0xffff80002cdc8000, vmspace=0xfffffd8073dff558 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 60693 522836 66031 0 2 0 syz-executor.3 *60693 173494 66031 0 7 0x4000000 syz-executor.3 91792 347437 1 0 3 0x82 nanoslp getty 20893 495172 22188 0 3 0x80 nanoslp syz-executor.2 20893 22442 22188 0 3 0x4000080 fsleep syz-executor.2 28639 434040 89157 0 3 0x80 nanoslp syz-executor.6 28639 256400 89157 0 3 0x4000080 fsleep syz-executor.6 65922 37649 70261 0 2 0x2 syz-executor.0 94386 370071 70261 0 3 0x82 piperd syz-executor.1 72606 233155 70261 0 2 0x2 syz-executor.7 66031 296202 70261 0 3 0x82 nanoslp syz-executor.3 22188 155529 70261 0 3 0x82 nanoslp syz-executor.2 26599 34416 70261 0 2 0x2 syz-executor.5 96491 364315 70261 0 3 0x82 nanoslp syz-executor.4 71450 132839 0 0 3 0x14200 acct acct 89157 118659 70261 0 3 0x82 nanoslp syz-executor.6 17673 29606 0 0 3 0x14200 bored sosplice 37513 454829 0 0 3 0x14280 nfsidl nfsio 4125 151553 0 0 3 0x14280 nfsidl nfsio 65820 16976 0 0 3 0x14280 nfsidl nfsio 31594 339019 0 0 3 0x14280 nfsidl nfsio 43033 286828 0 0 3 0x14280 nfsidl nfsio 4674 155404 0 0 3 0x14280 nfsidl nfsio 70261 422498 41341 0 3 0x82 thrsleep syz-fuzzer 70261 436416 41341 0 3 0x4000082 nanoslp syz-fuzzer 70261 384832 41341 0 3 0x4000082 thrsleep syz-fuzzer 70261 171295 41341 0 3 0x4000082 kqread syz-fuzzer 70261 486737 41341 0 3 0x4000082 thrsleep syz-fuzzer 70261 178175 41341 0 3 0x4000082 thrsleep syz-fuzzer 70261 47241 41341 0 3 0x4000082 thrsleep syz-fuzzer 70261 161463 41341 0 3 0x4000082 thrsleep syz-fuzzer 70261 231354 41341 0 3 0x4000082 thrsleep syz-fuzzer 41341 447468 41311 0 3 0x10008a sigsusp ksh 41311 331013 60455 0 3 0x9a kqread sshd 60455 416787 1 0 3 0x88 kqread sshd 12731 199262 8097 73 3 0x1100090 kqread syslogd 8097 261919 1 0 3 0x100082 netio syslogd 84321 5602 1 0 3 0x100080 kqread resolvd 17722 181374 18779 77 3 0x100092 kqread dhcpleased 57251 476278 18779 77 3 0x100092 kqread dhcpleased 18779 196972 1 0 3 0x80 kqread dhcpleased 10626 102134 0 0 3 0x14200 bored smr 41146 520964 0 0 2 0x14200 zerothread 28076 375478 0 0 3 0x14200 aiodoned aiodoned 87282 485444 0 0 3 0x14200 syncer update 73954 234710 0 0 3 0x14200 cleaner cleaner 55235 231553 0 0 3 0x14200 reaper reaper 46595 507038 0 0 3 0x14200 pgdaemon pagedaemon 69249 123079 0 0 3 0x14200 bored viomb 1651 437358 0 0 3 0x40014200 acpi0 acpi0 8322 316801 0 0 3 0x14200 bored softnet 93749 263930 0 0 3 0x14200 bored systqmp 87110 496366 0 0 3 0x14200 bored systq 97045 137210 0 0 3 0x40014200 bored softclock 44275 182267 0 0 3 0x40014200 idle0 1 367163 0 0 3 0x80082 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 devbuf 10228 6571K 7130K 78643K 46322 0 pcb 13 18K 23K 78643K 1649 0 rtable 221 18K 20K 78643K 3220 0 ifaddr 106 25K 27K 78643K 1488 0 sysctl 3 1K 1K 78643K 3 0 counters 27 17K 17K 78643K 195 0 ioctlops 0 0K 4K 78643K 8354 0 iov 0 0K 24K 78643K 1056 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1398 87K 88K 78643K 37594 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 102 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 1863 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 70K 78643K 13913 0 sigio 0 0K 0K 78643K 79 0 proc 58 55K 71K 78643K 2329 0 subproc 104 6K 6K 78643K 819 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1029 0 in_multi 80 5K 6K 78643K 1334 0 ether_multi 1 0K 0K 78643K 169 0 mrt 1 0K 0K 78643K 52 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 271 1208K 1208K 78643K 271 0 exec 0 0K 2K 78643K 3162 0 pfkey data 0 0K 0K 78643K 8 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 415 508K 1035K 78643K 167950 0 UVM aobj 131 9K 9K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 637 0 NDP 14 0K 2K 78643K 366 0 temp 150 4721K 4967K 78643K 245402 0 kqueue 12 18K 26K 78643K 697 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 968 0 965 14 13 1 3 0 8 0 rtentry 112 924 0 835 4 1 3 4 0 8 0 unpcb 136 7391 0 7378 98 97 1 10 0 8 0 syncache 296 23 0 23 5 5 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 49 0 49 2 2 0 1 0 8 0 tcpcb 736 4263 0 4246 163 160 3 26 0 8 0 arp 88 137 0 119 1 0 1 1 0 8 0 ipq 40 18 0 17 8 7 1 1 0 8 0 ipqe 40 296 0 295 8 7 1 1 0 8 0 inpcb 304 11886 0 11878 215 210 5 19 0 8 4 rttmr 72 85 0 85 7 7 0 1 0 8 0 ip6q 72 4 0 4 2 2 0 1 0 8 0 ip6af 40 7 0 7 2 2 0 1 0 8 0 nd6 48 264 0 243 1 0 1 1 0 8 0 pkpcb 40 38 0 38 8 8 0 1 0 8 0 kcovpl 48 63 0 55 1 0 1 1 0 8 0 ppxss 1152 41 0 41 11 10 1 1 0 8 1 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pfrktable 1344 169 0 163 3 2 1 1 0 8 0 pftag 88 23 0 16 1 0 1 1 0 8 0 pfstkey 112 20 0 20 2 2 0 1 0 8 0 pfstate 320 10 0 10 2 2 0 1 0 8 0 pfrule 1360 610 0 603 9 8 1 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4833 0 4470 55 31 24 31 0 8 0 art_table 32 4834 0 4470 6 2 4 5 0 8 0 art_node 16 914 0 837 1 0 1 1 0 8 0 sysvmsgpl 40 68 0 67 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1859 0 1849 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 45955 0 44465 94 0 94 94 0 8 0 ffsino 240 45955 0 44465 88 0 88 88 0 8 0 nchpl 144 63527 0 61906 62 0 62 62 0 8 0 uvmvnodes 80 6758 0 0 138 0 138 138 0 8 0 vnodes 224 6758 0 0 398 0 398 398 0 8 0 namei 1024 266210 0 266210 10 9 1 2 0 8 1 vcpupl 1984 97 0 0 13 0 13 13 0 8 0 vmpool 528 178 0 81 11 4 7 7 0 8 0 pfiaddrpl 120 61 0 54 4 3 1 1 0 8 0 scxspl 216 116873 0 116873 25 24 1 8 0 8 1 plimitpl 152 1743 0 1729 1 0 1 1 0 8 0 sigapl 424 14105 0 14059 8 2 6 8 0 8 0 futexpl 64 136739 0 136737 6 5 1 1 0 8 0 knotepl 120 117566 0 117485 14 11 3 8 0 8 0 kqueuepl 184 3233 0 3225 50 49 1 4 0 8 0 pipepl 304 2505 0 2477 61 58 3 9 0 8 0 fdescpl 432 14070 0 14046 8 4 4 4 0 8 0 filepl 120 188960 0 188722 200 190 10 21 0 8 0 lockfpl 104 3277 0 3275 9 8 1 2 0 8 0 lockfspl 48 798 0 796 1 0 1 1 0 8 0 sessionpl 144 79 0 64 1 0 1 1 0 8 0 pgrppl 48 134 0 119 1 0 1 1 0 8 0 ucredpl 96 111989 0 111975 1 0 1 1 0 8 0 zombiepl 144 14060 0 14059 2 1 1 1 0 8 0 processpl 1000 14105 0 14059 9 2 7 8 0 8 0 procpl 672 34737 0 34680 36 29 7 8 0 8 0 sosppl 168 55 0 55 13 13 0 1 0 8 0 sockpl 448 20291 0 20267 475 465 10 44 0 8 7 mcl64k 65536 476 0 476 44 43 1 1 0 8 1 mcl16k 16384 98 0 98 30 29 1 1 0 8 1 mcl12k 12288 482 0 482 40 39 1 1 0 8 1 mcl9k 9216 215 0 215 34 33 1 1 0 8 1 mcl8k 8192 735 0 700 39 34 5 5 0 8 0 mcl4k 4096 1260 0 1260 19 18 1 1 0 8 1 mcl2k2 2112 87 0 87 38 37 1 1 0 8 1 mcl2k 2048 101252 0 101170 48 37 11 22 0 8 0 mtagpl 96 2091 0 1678 27 14 13 13 0 8 0 mbufpl 256 253943 0 253214 674 624 50 552 0 8 1 bufpl 288 28128 0 21368 483 0 483 483 0 8 0 anonpl 24 3857987 0 3838321 278 143 135 151 0 188 0 amapchunkpl 152 434586 0 433837 434 347 87 347 0 158 51 amappl16 200 38980 0 38273 159 120 39 51 0 8 0 amappl15 192 2752 0 2744 1 0 1 1 0 8 0 amappl14 184 2767 0 2762 1 0 1 1 0 8 0 amappl13 176 2361 0 2358 1 0 1 1 0 8 0 amappl12 168 1872 0 1865 1 0 1 1 0 8 0 amappl11 160 2559 0 2548 1 0 1 1 0 8 0 amappl10 152 1042 0 1042 2 1 1 1 0 8 1 amappl9 144 1713 0 1708 1 0 1 1 0 8 0 amappl8 136 2717 0 2613 4 0 4 4 0 8 0 amappl7 128 1225 0 1214 1 0 1 1 0 8 0 amappl6 120 1583 0 1556 2 1 1 2 0 8 0 amappl5 112 10604 0 10591 1 0 1 1 0 8 0 amappl4 104 6830 0 6788 2 0 2 2 0 8 0 amappl3 96 3960 0 3945 1 0 1 1 0 8 0 amappl2 88 4417 0 4363 3 1 2 3 0 8 0 amappl1 80 248381 0 247869 19 6 13 18 0 8 0 amappl 88 166377 0 166135 7 0 7 7 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 14248 0 14127 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14248 0 14127 1 0 1 1 0 8 0 vmmpekpl 168 96845 0 96783 4 0 4 4 0 8 0 vmmpepl 168 1275048 0 1272533 335 191 144 144 0 357 6 vmsppl 272 14247 0 14127 11 2 9 9 0 8 0 rwobjpl 24 300618 0 292045 57 4 53 53 0 8 0 pdppl 4096 28502 0 28351 931 770 161 161 0 8 10 pvpl 32 6844109 0 6821031 485 276 209 268 0 265 0 pmappl 216 14247 0 14127 7 0 7 7 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 3180 0 2232 42 14 28 41 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace socreate(18,ffff80002cdcd368,0,29) at socreate+0x7b sys/kern/uipc_socket.c:172 sys_socket(ffff80002160d500,ffff80002cdcd3f8,ffff80002cdcd450) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002cdcd4c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd8d41688f40, count: -4 ddb> machine ddbcpu 1 No such command ddb> trace socreate(18,ffff80002cdcd368,0,29) at socreate+0x7b sys/kern/uipc_socket.c:172 sys_socket(ffff80002160d500,ffff80002cdcd3f8,ffff80002cdcd450) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff80002cdcd4c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd8d41688f40, count: -4