login: panic: kmmaplk: lock not shared Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *125226 61916 0 0 0x4000000 0 syz-executor.4 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,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff800024e01088,1,200006c0,ffff800024e010b8,ffff8000264ea7e0) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff800024e01084,2,200006c0,ffff800024e010b8,0,fffffffffffffe97,b738c98ced831992) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000264ea7e0,ffff800024e01128,ffff800024e01180) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff800024e011f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80e6451ed90, 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,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff800024e01088,1,200006c0,ffff800024e010b8,ffff8000264ea7e0) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff800024e01084,2,200006c0,ffff800024e010b8,0,fffffffffffffe97,b738c98ced831992) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000264ea7e0,ffff800024e01128,ffff800024e01180) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff800024e011f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80e6451ed90, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800024e00b20 rbx 0xffffffff82a80478 kernel_map_store+0x8 rdx 0xffff800000d965c0 rcx 0 rax 0xffff8000264ea7e0 r8 0 r9 0x8080808080808080 r10 0xda7000da88cdab4d r11 0x88cc7eb922c697e r12 0 r13 0xffffffff82a80470 kernel_map_store r14 0 r15 0x1 rip 0xffffffff8120dfc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800024e00b10 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.4) pid=125226 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000264eba40,0xffff8000264eb510 process=0xffff800021616020 user=0xffff800024dfc000, vmspace=0xfffffd807d46a668 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46704 367961 51486 0 2 0 syz-executor.7 81520 70150 88365 0 2 0 syz-executor.5 81520 517769 88365 0 2 0x4000000 syz-executor.5 61916 519972 1536 0 2 0 syz-executor.4 *61916 125226 1536 0 7 0x4000000 syz-executor.4 90027 455680 28587 0 2 0 syz-executor.0 90027 381801 28587 0 3 0x4000080 fsleep syz-executor.0 56219 409224 99840 0 2 0 syz-executor.3 56219 209852 99840 0 3 0x4000080 fsleep syz-executor.3 36424 343435 64446 0 2 0 syz-executor.2 36424 288794 64446 0 3 0x4000080 fsleep syz-executor.2 28587 56341 410 0 2 0x482 syz-executor.0 28340 455074 1 0 3 0x100083 ttyin getty 99840 186708 410 0 2 0x482 syz-executor.3 51486 387007 410 0 2 0x482 syz-executor.7 10254 58710 410 0 2 0x2 syz-executor.6 88365 212995 410 0 2 0x482 syz-executor.5 1536 207480 410 0 3 0x82 nanoslp syz-executor.4 82198 254206 410 0 2 0x482 syz-executor.1 64446 284723 410 0 2 0x482 syz-executor.2 33192 92671 0 0 3 0x14280 nfsidl nfsio 23096 53312 0 0 3 0x14280 nfsidl nfsio 26111 369444 0 0 3 0x14280 nfsidl nfsio 94351 207263 0 0 3 0x14280 nfsidl nfsio 31914 441552 0 0 3 0x14280 nfsidl nfsio 34715 297080 0 0 3 0x14280 nfsidl nfsio 65981 352064 0 0 3 0x14280 nfsidl nfsio 72863 400484 0 0 3 0x14280 nfsidl nfsio 65827 516103 0 0 3 0x14280 nfsidl nfsio 36240 98612 0 0 3 0x14280 nfsidl nfsio 1860 67135 0 0 3 0x14280 nfsidl nfsio 81982 47474 0 0 3 0x14280 nfsidl nfsio 85370 238979 0 0 3 0x14280 nfsidl nfsio 5752 480914 0 0 3 0x14280 nfsidl nfsio 28646 501841 0 0 3 0x14280 nfsidl nfsio 66824 300411 0 0 3 0x14280 nfsidl nfsio 73282 248313 0 0 3 0x14280 nfsidl nfsio 63637 209075 0 0 3 0x14280 nfsidl nfsio 9715 321125 0 0 3 0x14280 nfsidl nfsio 46222 38997 0 0 3 0x14280 nfsidl nfsio 1353 366361 0 0 3 0x14200 bored sosplice 410 11600 41138 0 3 0x82 thrsleep syz-fuzzer 410 514685 41138 0 2 0x4000482 syz-fuzzer 410 428685 41138 0 3 0x4000082 thrsleep syz-fuzzer 410 194161 41138 0 3 0x4000082 thrsleep syz-fuzzer 410 512605 41138 0 3 0x4000082 thrsleep syz-fuzzer 410 62330 41138 0 3 0x4000082 thrsleep syz-fuzzer 410 342278 41138 0 3 0x4000082 thrsleep syz-fuzzer 410 468118 41138 0 3 0x4000082 kqread syz-fuzzer 410 298704 41138 0 3 0x4000082 thrsleep syz-fuzzer 41138 398051 75535 0 3 0x10008a sigsusp ksh 75535 453974 76483 0 3 0x9a kqread sshd 76483 498006 1 0 3 0x88 kqread sshd 63397 413106 82226 73 3 0x1100090 kqread syslogd 82226 450615 1 0 3 0x100082 netio syslogd 83880 348664 1 0 3 0x100080 kqread resolvd 8408 323706 44136 77 3 0x100092 kqread dhcpleased 58318 405974 44136 77 3 0x100092 kqread dhcpleased 44136 136887 1 0 3 0x80 kqread dhcpleased 29002 449881 0 0 3 0x14200 bored smr 59013 357764 0 0 2 0x14200 zerothread 84219 471030 0 0 3 0x14200 aiodoned aiodoned 31825 57434 0 0 3 0x14200 syncer update 12634 433512 0 0 3 0x14200 cleaner cleaner 90826 363555 0 0 3 0x14200 reaper reaper 81922 108319 0 0 3 0x14200 pgdaemon pagedaemon 569 19585 0 0 3 0x14200 bored viomb 27407 311816 0 0 3 0x40014200 acpi0 acpi0 61993 498669 0 0 2 0x14200 softnet 15810 398238 0 0 3 0x14200 bored systqmp 10262 158938 0 0 3 0x14200 bored systq 80799 148686 0 0 2 0x40014200 softclock 9317 351255 0 0 3 0x40014200 idle0 1 475586 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 10210 6478K 15181K 78643K 84568 0 pcb 13 20K 25K 78643K 2156 0 rtable 190 15K 27K 78643K 6155 0 ifaddr 99 26K 30K 78643K 2430 0 sysctl 3 1K 1K 78643K 3 0 counters 29 17K 17K 78643K 274 0 ioctlops 0 0K 4K 78643K 5822 0 iov 0 0K 28K 78643K 1942 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1551 97K 98K 78643K 21437 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 121 0 VM map 2 0K 0K 78643K 2 0 sem 22 11K 11K 78643K 1372 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 73K 78643K 17321 0 sigio 0 0K 0K 78643K 134 0 proc 67 55K 79K 78643K 3251 0 subproc 104 6K 6K 78643K 1109 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1260 0 in_multi 69 4K 7K 78643K 1687 0 ether_multi 1 0K 0K 78643K 208 0 mrt 2 0K 0K 78643K 50 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 4662 0 pfkey data 0 0K 1K 78643K 19 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 579 1204K 1240K 78643K 211496 0 UVM aobj 131 7K 7K 78643K 143 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1060 0 NDP 17 0K 2K 78643K 483 0 temp 171 4767K 5021K 78643K 189174 0 kqueue 12 18K 30K 78643K 1021 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 1497 0 1494 21 20 1 5 0 8 0 rtentry 112 1299 0 1221 6 3 3 4 0 8 0 unpcb 136 9080 0 9065 106 105 1 6 0 8 0 syncache 296 82 0 82 27 27 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 159 0 159 20 20 0 1 0 8 0 tcpcb 736 6806 0 6761 228 220 8 15 0 8 3 arp 88 198 0 184 1 0 1 1 0 8 0 ipq 40 48 0 47 7 6 1 1 0 8 0 ipqe 40 244 0 243 7 6 1 1 0 8 0 inpcb 304 19942 0 19930 276 267 9 17 0 8 6 rttmr 72 11 0 11 4 4 0 1 0 8 0 ip6q 72 31 0 31 4 4 0 1 0 8 0 ip6af 40 62 0 62 4 4 0 1 0 8 0 nd6 48 321 0 305 1 0 1 1 0 8 0 pkpcb 40 149 0 149 12 12 0 1 0 8 0 kcovpl 48 85 0 77 1 0 1 1 0 8 0 ppxss 1152 25 0 24 3 2 1 1 0 8 0 pfstscr 40 34 0 32 1 0 1 1 0 8 0 pfosfp 40 17 0 15 1 0 1 1 0 8 0 pfosfpen 112 17 0 7 1 0 1 1 0 8 0 pfrktable 1344 977 0 974 9 8 1 2 0 8 0 pftag 88 54 0 42 2 1 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 12 0 10 1 0 1 1 0 8 0 pfstkey 112 53 0 51 1 0 1 1 0 8 0 pfstate 320 28 0 27 1 0 1 1 0 8 0 pfrule 1360 1755 0 1742 34 32 2 25 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 5882 0 5557 62 37 25 30 0 8 0 art_table 32 5884 0 5558 4 1 3 4 0 8 0 art_node 16 1298 0 1231 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 6 1 0 1 1 0 8 0 semapl 112 1368 0 1348 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 26392 0 24872 96 0 96 96 0 8 0 ffsino 240 26392 0 24872 90 0 90 90 0 8 0 nchpl 144 50271 0 48650 63 1 62 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 195442 0 195442 13 12 1 2 0 8 1 vcpupl 1984 224 0 0 28 0 28 28 0 8 0 vmpool 528 492 0 268 19 4 15 15 0 8 0 pfiaddrpl 120 491 0 488 15 14 1 8 0 8 0 scsiplug 72 17 0 17 7 7 0 1 0 8 0 scxspl 216 145227 0 145227 28 27 1 8 0 8 1 plimitpl 152 2044 0 2029 1 0 1 1 0 8 0 sigapl 424 17460 0 17398 9 1 8 8 0 8 0 futexpl 64 185330 0 185327 7 6 1 1 0 8 0 knotepl 120 155598 0 155518 46 39 7 9 0 8 4 kqueuepl 184 3735 0 3725 59 58 1 4 0 8 0 pipepl 304 3377 0 3349 71 68 3 12 0 8 0 fdescpl 432 17426 0 17399 5 1 4 4 0 8 0 filepl 120 133918 0 133670 193 178 15 17 0 8 5 lockfpl 104 4881 0 4879 12 11 1 2 0 8 0 lockfspl 48 1217 0 1215 1 0 1 1 0 8 0 sessionpl 144 104 0 88 1 0 1 1 0 8 0 pgrppl 48 205 0 189 1 0 1 1 0 8 0 ucredpl 96 19205 0 19189 1 0 1 1 0 8 0 zombiepl 144 17399 0 17398 3 2 1 1 0 8 0 processpl 1000 17460 0 17398 8 0 8 8 0 8 0 procpl 672 44114 0 44039 27 19 8 9 0 8 0 sosppl 168 147 0 147 25 25 0 1 0 8 0 sockpl 448 30676 0 30646 597 583 14 30 0 8 8 mcl64k 65536 731 0 731 48 47 1 1 0 8 1 mcl16k 16384 171 0 171 46 45 1 1 0 8 1 mcl12k 12288 547 0 547 50 49 1 1 0 8 1 mcl9k 9216 417 0 417 54 54 0 1 0 8 0 mcl8k 8192 1251 0 1251 43 42 1 1 0 8 1 mcl4k 4096 2350 0 2350 21 20 1 1 0 8 1 mcl2k2 2112 159 0 159 51 50 1 1 0 8 1 mcl2k 2048 114716 0 114649 84 74 10 35 0 8 0 mtagpl 96 16401 0 15677 103 74 29 39 0 8 0 mbufpl 256 321560 0 320600 308 215 93 115 0 8 3 bufpl 288 32390 0 25986 458 0 458 458 0 8 0 anonpl 24 4857875 0 4833250 378 207 171 185 0 188 0 amapchunkpl 152 578815 0 577823 962 916 46 666 0 158 1 amappl16 200 50589 0 49588 182 117 65 66 0 8 8 amappl15 192 2627 0 2620 1 0 1 1 0 8 0 amappl14 184 1636 0 1630 1 0 1 1 0 8 0 amappl13 176 4128 0 4125 1 0 1 1 0 8 0 amappl12 168 2236 0 2234 1 0 1 1 0 8 0 amappl11 160 1660 0 1647 1 0 1 1 0 8 0 amappl10 152 1860 0 1851 1 0 1 1 0 8 0 amappl9 144 2930 0 2926 1 0 1 1 0 8 0 amappl8 136 3476 0 3347 6 1 5 5 0 8 0 amappl7 128 1545 0 1532 1 0 1 1 0 8 0 amappl6 120 2906 0 2875 2 1 1 2 0 8 0 amappl5 112 15160 0 15143 1 0 1 1 0 8 0 amappl4 104 5389 0 5350 2 0 2 2 0 8 0 amappl3 96 5336 0 5315 1 0 1 1 0 8 0 amappl2 88 6908 0 6847 3 1 2 3 0 8 0 amappl1 80 307930 0 307374 18 5 13 18 0 8 0 amappl 88 209314 0 209000 14 6 8 8 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 17918 0 17667 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17918 0 17667 2 0 2 2 0 8 0 vmmpekpl 168 118193 0 118111 4 0 4 4 0 8 0 vmmpepl 168 1602901 0 1597537 557 302 255 266 0 357 3 vmsppl 272 17917 0 17667 21 4 17 17 0 8 0 rwobjpl 24 377741 0 369590 52 1 51 51 0 8 0 pdppl 4096 35842 0 35558 1198 910 288 288 0 8 4 pvpl 32 8139421 0 8117794 583 374 209 260 0 265 1 pmappl 216 17917 0 17667 18 3 15 15 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 3355 0 2244 33 0 33 33 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,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff800024e01088,1,200006c0,ffff800024e010b8,ffff8000264ea7e0) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff800024e01084,2,200006c0,ffff800024e010b8,0,fffffffffffffe97,b738c98ced831992) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000264ea7e0,ffff800024e01128,ffff800024e01180) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff800024e011f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80e6451ed90, 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,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline] uvm_map_fill_vmmap(ffffffff82a80470,ffff800000ddd000,ffff800024e00ca8) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593 sysctl_proc_vmmap(ffff800024e01088,1,200006c0,ffff800024e010b8,ffff8000264ea7e0) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111 kern_sysctl(ffff800024e01084,2,200006c0,ffff800024e010b8,0,fffffffffffffe97,b738c98ced831992) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449 sys_sysctl(ffff8000264ea7e0,ffff800024e01128,ffff800024e01180) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 syscall(ffff800024e011f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80e6451ed90, count: -9