login: panic: uvmspace_fork: no space in map for entry in empty map Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 129548 52651 0 0 0 0 syz-executor.1 *438548 52651 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 uvm_mapent_clone(ffff800000a9dc00,e000,1f0000,0,7,7) at uvm_mapent_clone+0x1de sys/uvm/uvm_map.c:3708 uvm_share(ffff800000a9dc00,0,7,fffffd807f008cf0,20002000,200000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3767 [inline] uvm_share(ffff800000a9dc00,0,7,fffffd807f008cf0,20002000,200000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668 vm_impl_init_vmx(ffff800020b279e0,ffff800020ab0c70) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270 vm_create() at vm_create+0x1a0 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline] vm_create() at vm_create+0x1a0 sys/arch/amd64/amd64/vmm.c:1174 VOP_IOCTL(fffffd806e163820,c5005601,ffff800000ab6000,1,fffffd807f7c67e0,ffff800020ab0c70) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 vn_ioctl(fffffd8065ac7148,c5005601,ffff800000ab6000,ffff800020ab0c70) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533 sys_ioctl(ffff800020ab0c70,ffff800021b975a8,ffff800021b975f0) at sys_ioctl+0x5b9 syscall(ffff800021b97670) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021b97670) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb0bfd151140, count: 4 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 uvmspace_fork: no space in map for entry in empty map 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 uvm_mapent_clone(ffff800000a9dc00,e000,1f0000,0,7,7) at uvm_mapent_clone+0x1de sys/uvm/uvm_map.c:3708 uvm_share(ffff800000a9dc00,0,7,fffffd807f008cf0,20002000,200000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3767 [inline] uvm_share(ffff800000a9dc00,0,7,fffffd807f008cf0,20002000,200000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668 vm_impl_init_vmx(ffff800020b279e0,ffff800020ab0c70) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270 vm_create() at vm_create+0x1a0 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline] vm_create() at vm_create+0x1a0 sys/arch/amd64/amd64/vmm.c:1174 VOP_IOCTL(fffffd806e163820,c5005601,ffff800000ab6000,1,fffffd807f7c67e0,ffff800020ab0c70) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 vn_ioctl(fffffd8065ac7148,c5005601,ffff800000ab6000,ffff800020ab0c70) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533 sys_ioctl(ffff800020ab0c70,ffff800021b975a8,ffff800021b975f0) at sys_ioctl+0x5b9 syscall(ffff800021b97670) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021b97670) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb0bfd151140, count: -11 ddb{1}> show registers rdi 0xffffffff820bb2c7 db_enter+0x17 rsi 0x1f12 __ALIGN_SIZE+0xf12 rbp 0xffff800021b96fd0 rbx 0xffff800021b97080 rdx 0x1f13 __ALIGN_SIZE+0xf13 rcx 0xffff800022d66000 rax 0xffff800022d66000 r8 0xffffffff8101132f kprintf+0x16f r9 0x1 r10 0x25 r11 0x6e9e744df15cb36 r12 0x3000000008 r13 0xffff800021b96fe0 r14 0x100 r15 0x1 rip 0xffffffff820bb2c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021b96fc0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=438548 stat=onproc flags process=0 proc=4000000 pri=52, usrpri=52, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab1650,0xffff800020ab0790 process=0xffff800020add880 user=0xffff800021b92000, vmspace=0xfffffd807f008cf0 estcpu=12, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73303 296525 53665 0 2 0 syz-executor.0 73303 323150 53665 0 2 0x4000000 syz-executor.0 52651 129548 62512 0 7 0 syz-executor.1 *52651 438548 62512 0 7 0x4000000 syz-executor.1 47021 39553 0 0 3 0x14200 bored sosplice 62512 374665 71289 0 3 0x82 nanosleep syz-executor.1 53665 281061 71289 0 3 0x82 nanosleep syz-executor.0 71289 369580 57349 0 3 0x82 thrsleep syz-fuzzer 71289 174025 57349 0 3 0x4000082 nanosleep syz-fuzzer 71289 302373 57349 0 3 0x4000082 kqread syz-fuzzer 71289 217311 57349 0 3 0x4000082 thrsleep syz-fuzzer 71289 22680 57349 0 3 0x4000082 thrsleep syz-fuzzer 71289 28122 57349 0 3 0x4000082 thrsleep syz-fuzzer 71289 321329 57349 0 3 0x4000082 thrsleep syz-fuzzer 71289 264960 57349 0 3 0x4000082 nanosleep syz-fuzzer 71289 405393 57349 0 3 0x4000082 thrsleep syz-fuzzer 71289 371674 57349 0 3 0x4000082 thrsleep syz-fuzzer 57349 70589 27322 0 3 0x10008a pause ksh 27322 403155 84304 0 3 0x92 select sshd 27038 82291 1 0 3 0x100083 ttyin getty 84304 453507 1 0 3 0x80 select sshd 90693 38720 84164 74 3 0x100092 bpf pflogd 84164 385306 1 0 3 0x80 netio pflogd 85436 391923 74084 73 3 0x100090 kqread syslogd 74084 440693 1 0 3 0x100082 netio syslogd 76574 236755 1 77 3 0x100090 poll dhclient 6342 410223 1 0 3 0x80 poll dhclient 64425 429521 0 0 2 0x14200 zerothread 79332 250826 0 0 3 0x14200 aiodoned aiodoned 99122 287531 0 0 3 0x14200 syncer update 75163 35585 0 0 3 0x14200 cleaner cleaner 93796 474490 0 0 3 0x14200 reaper reaper 50092 428298 0 0 3 0x14200 pgdaemon pagedaemon 87900 97148 0 0 3 0x14200 bored crynlk 69817 263571 0 0 3 0x14200 bored crypto 47013 129280 0 0 3 0x40014200 acpi0 acpi0 6169 13072 0 0 3 0x40014200 idle1 38860 262866 0 0 3 0x14200 bored softnet 26133 34237 0 0 3 0x14200 bored systqmp 33174 158009 0 0 3 0x14200 bored systq 11236 198690 0 0 3 0x40014200 bored softclock 63700 373707 0 0 3 0x40014200 idle0 88723 132675 0 0 3 0x14200 bored smr 1 185019 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 52651 (syz-executor.1) thread 0xffff800020ab0c70 (438548) shared rwlock vmmaplk r = 0 (0xfffffd807f008d08) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 uvm_share+0xcf vm_map_lock_read_ln sys/uvm/uvm_map.c:5365 [inline] #1 uvm_share+0xcf sys/uvm/uvm_map.c:3627 #2 vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270 #3 vm_create+0x1a0 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline] #3 vm_create+0x1a0 sys/arch/amd64/amd64/vmm.c:1174 #4 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 #5 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533 #6 sys_ioctl+0x5b9 #7 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #7 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #8 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xffff800000a9dc18) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 vm_map_lock_ln+0x10d sys/uvm/uvm_map.c:5343 #3 uvm_share+0xa7 vm_map_lock_read_ln sys/uvm/uvm_map.c:5364 [inline] #3 uvm_share+0xa7 sys/uvm/uvm_map.c:3627 #4 vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270 #5 vm_create+0x1a0 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline] #5 vm_create+0x1a0 sys/arch/amd64/amd64/vmm.c:1174 #6 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 #7 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533 #8 sys_ioctl+0x5b9 #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 rwlock vmlistlock r = 0 (0xffff800000671478) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 vm_create+0x130 vm_impl_init sys/arch/amd64/amd64/vmm.c:1383 [inline] #1 vm_create+0x130 sys/arch/amd64/amd64/vmm.c:1174 #2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 #3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533 #4 sys_ioctl+0x5b9 #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 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82684eb8) #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 9502 6409K 6998K 78643K 10757 0 0 pcb 13 8K 8K 78643K 40 0 0 rtable 98 3K 4K 78643K 241 0 0 ifaddr 62 12K 13K 78643K 77 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 1 2K 4K 78643K 1474 0 0 iov 0 0K 18K 78643K 131 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1221 77K 77K 78643K 1273 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 4 2K 2K 78643K 4 0 0 sem 12 0K 0K 78643K 31 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 6 17K 25K 78643K 107 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 59 63K 83K 78643K 443 0 0 subproc 32 2K 2K 78643K 34 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 1 0 0 in_multi 36 2K 2K 78643K 42 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 42 185K 185K 78643K 42 0 0 exec 0 0K 1K 78643K 211 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 122 39K 39K 78643K 1302 0 0 UVM aobj 16 2K 2K 78643K 16 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 15 0 0 NDP 10 0K 0K 78643K 16 0 0 temp 127 3554K 3618K 78643K 3683 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 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 48 0 9 2 0 2 2 0 8 0 unpcb 120 175 0 165 3 1 2 2 0 8 1 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpcb 544 47 0 43 1 0 1 1 0 8 0 inpcb 280 143 0 136 2 1 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 4 0 1 1 0 1 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 90 0 90 1 1 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 19 0 0 1 0 1 1 0 8 0 pfstkey 112 19 0 0 1 0 1 1 0 8 0 pfstate 328 19 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 220 0 17 14 0 14 14 0 8 0 art_table 32 221 0 17 2 0 2 2 0 8 0 art_node 16 47 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 35 0 34 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 14 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1542 0 136 46 0 46 46 0 8 0 ffsino 272 1542 0 136 94 0 94 94 0 8 0 nchpl 144 1925 0 320 61 0 61 61 0 8 0 uvmvnodes 72 1623 0 0 30 0 30 30 0 8 0 vnodes 208 1623 0 0 86 0 86 86 0 8 0 namei 1024 5123 0 5123 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 552 2 0 0 1 0 1 1 0 8 0 scxspl 192 6580 0 6579 8 4 4 7 0 8 3 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 432 305 0 289 3 1 2 3 0 8 0 futexpl 56 2345 0 2345 1 0 1 1 0 8 1 knotepl 112 55 0 36 1 0 1 1 0 8 0 kqueuepl 104 16 0 14 1 0 1 1 0 8 0 pipepl 160 194 0 173 2 1 1 2 0 8 0 fdescpl 488 306 0 289 3 0 3 3 0 8 0 filepl 152 1989 0 1885 8 1 7 7 0 8 3 lockfpl 104 22 0 21 1 0 1 1 0 8 0 lockfspl 48 8 0 7 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 125 0 116 1 0 1 1 0 8 0 zombiepl 144 289 0 289 1 0 1 1 0 8 1 processpl 896 322 0 289 4 0 4 4 0 8 0 procpl 632 523 0 479 6 1 5 5 0 8 1 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 384 341 0 322 8 1 7 7 0 8 5 mcl64k 65536 257 0 0 33 0 33 33 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 167 0 0 20 0 20 20 0 8 0 mtagpl 80 2 0 0 1 0 1 1 0 8 0 mbufpl 256 363 0 0 23 0 23 23 0 8 0 bufpl 256 6562 0 1318 328 0 328 328 0 8 0 anonpl 16 55715 0 35558 99 1 98 98 0 124 15 amapchunkpl 152 1563 0 1402 8 0 8 8 0 158 0 amappl16 192 2043 0 939 68 0 68 68 0 8 12 amappl14 176 87 0 81 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 6 0 4 1 0 1 1 0 8 0 amappl11 152 98 0 80 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 600 0 597 1 0 1 1 0 8 0 amappl8 128 184 0 150 2 0 2 2 0 8 0 amappl7 120 40 0 36 1 0 1 1 0 8 0 amappl6 112 93 0 82 1 0 1 1 0 8 0 amappl5 104 135 0 119 1 0 1 1 0 8 0 amappl4 96 562 0 531 1 0 1 1 0 8 0 amappl3 88 153 0 147 1 0 1 1 0 8 0 amappl2 80 1548 0 1467 3 1 2 3 0 8 0 amappl1 72 16488 0 16033 25 13 12 20 0 8 2 amappl 80 784 0 734 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 308 0 289 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 308 0 289 1 0 1 1 0 8 0 vmmpekpl 168 6601 0 6568 2 0 2 2 0 8 0 vmmpepl 168 47686 0 45316 145 10 135 138 0 357 31 vmsppl 368 305 0 289 2 0 2 2 0 8 0 pdppl 4096 623 0 579 6 0 6 6 0 8 0 pvpl 32 183807 0 159865 228 0 228 228 0 265 34 pmappl 232 307 0 289 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 534 0 4 16 0 16 16 0 8 0