panic: amap_wipeout: corrupt amap Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *109362 53789 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8220ba77) at panic+0x15c sys/kern/subr_prf.c:207 amap_wipeout(fffffd805702c078) at amap_wipeout+0x208 sys/uvm/uvm_amap.c:447 uvm_unmap_detach(ffff80001d726830,1) at uvm_unmap_detach+0x163 sys/uvm/uvm_map.c:1586 uvm_map_teardown(fffffd806bc0abb0) at uvm_map_teardown+0x22c sys/uvm/uvm_map.c:2759 uvmspace_free(fffffd806bc0abb0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff8000ffff8ae0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d6e25f0) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: 7 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 amap_wipeout: corrupt amap ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8220ba77) at panic+0x15c sys/kern/subr_prf.c:207 amap_wipeout(fffffd805702c078) at amap_wipeout+0x208 sys/uvm/uvm_amap.c:447 uvm_unmap_detach(ffff80001d726830,1) at uvm_unmap_detach+0x163 sys/uvm/uvm_map.c:1586 uvm_map_teardown(fffffd806bc0abb0) at uvm_map_teardown+0x22c sys/uvm/uvm_map.c:2759 uvmspace_free(fffffd806bc0abb0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff8000ffff8ae0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d6e25f0) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d7266b0 rbx 0xffff80001d726760 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d726670 r9 0x1 r10 0 r11 0xdb2bbff4c3959f65 r12 0x3000000008 r13 0xffff80001d7266c0 r14 0x100 r15 0x1 rip 0xffffffff813d04a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d7266a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (reaper) pid=109362 stat=onproc flags process=14000 proc=200 pri=4, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6e1ea0,0xffff80001d6e2870 process=0xffff8000ffffc3a0 user=0xffff80001d721000, vmspace=0xffffffff825a2d48 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 10525 79921 0 0 3 0x14200 acct acct 36785 521474 1 0 2 0x82 syz-executor.1 72787 279357 15397 0 3 0x10008a pause ksh 15397 397277 73986 0 2 0x12 sshd 90562 314332 1 0 3 0x100083 ttyin getty 73986 484597 1 0 3 0x80 select sshd 14662 441697 24674 73 3 0x100090 kqread syslogd 24674 460971 1 0 3 0x100082 netio syslogd 82533 68386 1 77 3 0x100090 poll dhclient 91589 414790 1 0 3 0x80 poll dhclient 50048 305273 0 0 3 0x14200 bored smr 90175 72069 0 0 2 0x14200 zerothread 85367 481500 0 0 3 0x14200 aiodoned aiodoned 21870 218050 0 0 3 0x14200 syncer update 23745 65341 0 0 3 0x14200 cleaner cleaner *53789 109362 0 0 7 0x14200 reaper 73005 147450 0 0 3 0x14200 pgdaemon pagedaemon 54952 496706 0 0 3 0x14200 bored crynlk 30633 353457 0 0 3 0x14200 bored crypto 31243 516140 0 0 3 0x40014200 acpi0 acpi0 40154 87310 0 0 2 0x14200 softnet 67546 456878 0 0 3 0x14200 bored systqmp 65912 144295 0 0 3 0x14200 bored systq 74316 497047 0 0 3 0x40014200 bored softclock 33383 288933 0 0 3 0x40014200 idle0 1 482684 0 0 2 0x82 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 9493 6348K 6661K 78643K 11030 0 pcb 13 8K 8K 78643K 84 0 rtable 86 3K 3K 78643K 267 0 ifaddr 80 16K 17K 78643K 114 0 counters 22 16K 16K 78643K 28 0 ioctlops 0 0K 2K 78643K 177 0 iov 0 0K 16K 78643K 61 0 mount 1 1K 1K 78643K 1 0 vnodes 1233 78K 78K 78643K 1574 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 43 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 3 8K 25K 78643K 352 0 sigio 0 0K 0K 78643K 2 0 proc 50 38K 55K 78643K 505 0 subproc 31 1K 3K 78643K 221 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 37 0 in_multi 76 3K 3K 78643K 114 0 ether_multi 1 0K 0K 78643K 13 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 254 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 101 53K 69K 78643K 1641 0 UVM aobj 20 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 11 0K 0K 78643K 22 0 temp 102 3036K 3106K 78643K 7813 0 kqueue 2 2K 8K 78643K 23 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 arp 64 6 0 0 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 53 0 20 2 0 2 2 0 8 0 unpcb 120 137 0 129 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 83 0 83 1 1 0 1 0 8 0 tcpcb 544 153 0 149 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 45 0 45 1 1 0 1 0 8 0 inpcb 280 861 0 850 3 2 1 2 0 8 0 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 296 0 158 13 1 12 13 0 8 0 art_table 32 298 0 158 2 0 2 2 0 8 0 art_node 16 52 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 41 0 31 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1857 0 461 88 0 88 88 0 8 0 ffsino 240 1857 0 461 83 0 83 83 0 8 0 nchpl 144 2495 0 907 60 0 60 60 0 8 0 uvmvnodes 72 2192 0 0 40 0 40 40 0 8 0 vnodes 208 2192 0 0 116 0 116 116 0 8 0 namei 1024 6879 0 6879 2 1 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 7626 0 7626 4 3 1 1 0 8 1 plimitpl 152 33 0 26 1 0 1 1 0 8 0 sigapl 424 506 0 479 4 0 4 4 0 8 0 futexpl 56 6254 0 6254 2 2 0 1 0 8 0 knotepl 112 212 0 207 1 0 1 1 0 8 0 kqueuepl 144 38 0 37 1 0 1 1 0 8 0 pipelkpl 16 153 0 146 1 0 1 1 0 8 0 pipepl 120 306 0 296 1 0 1 1 0 8 0 fdescpl 432 491 0 479 2 0 2 2 0 8 0 filepl 120 3400 0 3316 4 0 4 4 0 8 0 lockfpl 104 114 0 113 1 0 1 1 0 8 0 lockfspl 48 36 0 35 1 0 1 1 0 8 0 sessionpl 112 28 0 18 1 0 1 1 0 8 0 pgrppl 48 38 0 28 1 0 1 1 0 8 0 ucredpl 96 274 0 267 1 0 1 1 0 8 0 zombiepl 144 480 0 478 1 0 1 1 0 8 0 processpl 920 506 0 478 4 0 4 4 0 8 0 procpl 624 842 0 814 4 0 4 4 0 8 0 sockpl 400 1041 0 1020 4 1 3 4 0 8 0 mcl64k 65536 31 0 31 1 1 0 1 0 8 0 mcl16k 16384 4 0 4 2 2 0 1 0 8 0 mcl12k 12288 9 0 9 1 1 0 1 0 8 0 mcl9k 9216 3 0 3 2 2 0 1 0 8 0 mcl8k 8192 10 0 10 1 1 0 1 0 8 0 mcl4k 4096 25 0 25 3 3 0 1 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 63792 0 63743 15 8 7 14 0 8 0 mtagpl 80 26 0 2 2 1 1 1 0 8 0 mbufpl 256 102462 0 102302 19 7 12 17 0 8 0 bufpl 280 4858 0 187 334 0 334 334 0 8 0 anonpl 16 57513 0 47799 74 14 60 72 0 107 0 amapchunkpl 152 3124 0 2986 21 14 7 20 0 158 0 amappl16 192 2344 0 1615 49 9 40 49 0 8 0 amappl15 184 124 0 122 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 38 0 36 1 0 1 1 0 8 0 amappl12 160 148 0 144 1 0 1 1 0 8 0 amappl11 152 49 0 40 1 0 1 1 0 8 0 amappl10 144 31 0 28 1 0 1 1 0 8 0 amappl9 136 363 0 362 1 0 1 1 0 8 0 amappl8 128 323 0 308 1 0 1 1 0 8 0 amappl7 120 128 0 114 1 0 1 1 0 8 0 amappl6 112 38 0 34 1 0 1 1 0 8 0 amappl5 104 447 0 435 1 0 1 1 0 8 0 amappl4 96 451 0 425 1 0 1 1 0 8 0 amappl3 88 120 0 114 1 0 1 1 0 8 0 amappl2 80 3056 0 2993 3 1 2 3 0 8 0 amappl1 72 18642 0 18235 27 18 9 20 0 8 0 amappl 80 1122 0 1079 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 495 0 479 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 495 0 479 1 0 1 1 0 8 0 vmmpekpl 168 7438 0 7409 2 0 2 2 0 8 0 vmmpepl 168 72754 0 71064 167 52 115 131 0 357 30 vmsppl 272 494 0 478 3 1 2 2 0 8 0 pdppl 4096 996 0 960 8 2 6 6 0 8 1 pvpl 32 186031 0 183096 172 28 144 172 0 265 102 pmappl 200 494 0 478 2 0 2 2 0 8 1 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 254 0 30 7 0 7 7 0 8 0