panic: kmmaplk: lock not shared Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *483507 66720 0 0x2 0 0 syz-executor1354427187 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202 rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398 uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda6a0, count: 6 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: kmmaplk: lock not shared ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202 rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398 uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda6a0, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002163b3e0 rbx 0xffffffff82a80478 kernel_map_store+0x8 rdx 0x3fd rcx 0 rax 0x20 r8 0x101010101010101 r9 0x8080808080808080 r10 0x903c50c062659b4b r11 0xf0a6f65a852d09d3 r12 0 r13 0xffffffff82a80470 kernel_map_store r14 0 r15 0x1 rip 0xffffffff8120dfc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002163b3d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor1354427187) pid=483507 stat=onproc flags process=2 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000215ed7b0,0xffffffff829b7c50 process=0xffff8000215e1780 user=0xffff800021636000, vmspace=0xfffffd807f017220 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *66720 483507 36050 0 7 0x2 syz-executor1354427187 36050 482628 48873 0 3 0x10008a sigsusp ksh 48873 88675 1011 0 2 0x12 sshd 11568 191825 1 0 3 0x100083 ttyin getty 1011 194989 1 0 3 0x88 kqread sshd 50387 312660 70434 73 3 0x1100090 kqread syslogd 70434 366160 1 0 3 0x100082 netio syslogd 43519 123967 1 0 3 0x100080 kqread resolvd 89484 66170 98974 77 3 0x100092 kqread dhcpleased 81466 282894 98974 77 3 0x100092 kqread dhcpleased 98974 145261 1 0 3 0x80 kqread dhcpleased 47189 203982 0 0 3 0x14200 bored smr 40118 295401 0 0 2 0x14200 zerothread 58323 442421 0 0 3 0x14200 aiodoned aiodoned 13294 489146 0 0 3 0x14200 syncer update 4122 32926 0 0 3 0x14200 cleaner cleaner 21573 395550 0 0 3 0x14200 reaper reaper 2094 308781 0 0 3 0x14200 pgdaemon pagedaemon 71813 52870 0 0 3 0x14200 bored viomb 82877 212491 0 0 3 0x40014200 acpi0 acpi0 77110 450145 0 0 3 0x14200 bored softnet 76614 95174 0 0 3 0x14200 bored systqmp 80844 376647 0 0 3 0x14200 bored systq 5086 375631 0 0 3 0x40014200 bored softclock 86433 418749 0 0 3 0x40014200 idle0 1 480229 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 devbuf 10131 6381K 6412K 78643K 11221 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 114 0 ifaddr 24 7K 7K 78643K 24 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1166 73K 73K 78643K 1179 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 55 54K 55K 78643K 226 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 406 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 73 3K 5K 78643K 1915 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 3 0 temp 20 4690K 4745K 78643K 3094 0 kqueue 11 16K 18K 78643K 24 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 20 0 17 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 33 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 88 2 0 0 1 0 1 1 0 8 0 inpcb 304 25 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1415 0 38 87 0 87 87 0 8 0 ffsino 240 1415 0 38 81 0 81 81 0 8 0 nchpl 144 1590 0 47 58 0 58 58 0 8 0 uvmvnodes 80 1424 0 0 30 0 30 30 0 8 0 vnodes 224 1424 0 0 84 0 84 84 0 8 0 namei 1024 4181 0 4181 2 1 1 1 0 8 1 scxspl 216 3659 0 3659 2 1 1 2 0 8 1 plimitpl 152 15 0 9 1 0 1 1 0 8 0 sigapl 424 300 0 274 4 0 4 4 0 8 0 knotepl 120 6209 0 6178 3 1 2 2 0 8 1 kqueuepl 184 20 0 13 1 0 1 1 0 8 0 pipepl 304 82 0 79 2 1 1 1 0 8 0 fdescpl 432 287 0 274 2 0 2 2 0 8 0 filepl 120 1028 0 975 2 0 2 2 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 64 0 54 1 0 1 1 0 8 0 zombiepl 144 274 0 274 2 1 1 1 0 8 1 processpl 1000 300 0 274 4 0 4 4 0 8 0 procpl 672 300 0 274 3 0 3 3 0 8 0 sockpl 448 78 0 56 3 0 3 3 0 8 0 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 5 0 5 2 1 1 1 0 8 1 mcl2k 2048 5617 0 5589 7 1 6 6 0 8 2 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 10209 0 10142 6 0 6 6 0 8 0 bufpl 288 1932 0 86 132 0 132 132 0 8 0 anonpl 24 39309 0 37268 16 2 14 15 0 188 1 amapchunkpl 152 3750 0 3623 7 1 6 7 0 158 0 amappl16 200 28 0 27 2 1 1 1 0 8 0 amappl15 192 62 0 59 1 0 1 1 0 8 0 amappl13 176 32 0 31 2 1 1 1 0 8 0 amappl12 168 7 0 7 2 1 1 1 0 8 1 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl9 144 396 0 394 1 0 1 1 0 8 0 amappl8 136 350 0 347 1 0 1 1 0 8 0 amappl7 128 61 0 58 1 0 1 1 0 8 0 amappl6 120 109 0 96 1 0 1 1 0 8 0 amappl5 112 263 0 254 1 0 1 1 0 8 0 amappl4 104 590 0 571 1 0 1 1 0 8 0 amappl3 96 117 0 108 1 0 1 1 0 8 0 amappl2 88 356 0 319 1 0 1 1 0 8 0 amappl1 80 8336 0 7991 9 1 8 9 0 8 0 amappl 88 1653 0 1596 2 0 2 2 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 287 0 274 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 287 0 274 1 0 1 1 0 8 0 vmmpekpl 168 5868 0 5853 1 0 1 1 0 8 0 vmmpepl 168 25223 0 24468 39 2 37 38 0 357 3 vmsppl 272 286 0 274 2 1 1 2 0 8 0 rwobjpl 24 9170 0 7244 12 0 12 12 0 8 0 pdppl 4096 580 0 548 53 21 32 40 0 8 0 pvpl 32 127320 0 123535 35 1 34 34 0 265 2 pmappl 216 286 0 274 1 0 1 1 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 391 0 28 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202 rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398 uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda6a0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202 rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398 uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda6a0, count: -9 ddb>