panic: pool_do_put: shmpl: double pool_put: 0xfffffd807aa750e0 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *425999 80920 0 0 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8307769b) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff8351e038,fffffd807aa750e0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff8351e038,fffffd807aa750e0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371f6e60) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371f6e60) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd1b52849b30, count: 8 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 *cpu1: pool_do_put: shmpl: double pool_put: 0xfffffd807aa750e0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8307769b) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff8351e038,fffffd807aa750e0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff8351e038,fffffd807aa750e0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371f6e60) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371f6e60) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd1b52849b30, count: -7 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000371f6b90 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff800033d867b8 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa3d2e040c85a37f1 r11 0x59e8e56c5bec9ada r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff81276185 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371f6b80 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=425999 pid=80920 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800033d86a40,0xffffffff835d3460 process=0xffff8000357b31f8 user=0xffff8000371f1000, vmspace=0xfffffd806bf396e8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80920 487553 40966 0 3 0x80 fsleep syz-executor 80920 1843 40966 0 3 0x4000080 fsleep syz-executor *80920 425999 40966 0 7 0x4000000 syz-executor 73020 219175 85321 0 3 0x80 fsleep syz-executor 73020 216527 85321 0 3 0x4000080 kqread syz-executor 26639 108449 72339 0 3 0x80 fsleep syz-executor 26639 329069 72339 0 3 0x4000080 netcon syz-executor 9811 149064 68493 0 3 0x80 fsleep syz-executor 9811 172816 68493 0 3 0x4000080 tunread syz-executor 1750 203090 95495 0 3 0x80 fsleep syz-executor 1750 123027 95495 0 3 0x4000080 sbwait syz-executor 52420 264370 19098 0 3 0x80 fsleep syz-executor 52420 150035 19098 0 3 0x4000080 sbwait syz-executor 46808 476128 61996 0 3 0x80 fsleep syz-executor 46808 517691 61996 0 3 0x4000080 sbwait syz-executor 8804 417630 14095 0 3 0x80 fsleep syz-executor 8804 37241 14095 0 3 0x4000080 kqsel syz-executor 57297 393426 0 0 3 0x14200 acct acct 74432 302421 1 0 3 0x100083 ttyin getty 84269 379127 0 0 3 0x14200 bored sosplice 72339 420684 75834 0 3 0x82 nanoslp syz-executor 85321 259408 75834 0 3 0x82 nanoslp syz-executor 40966 187086 75834 0 3 0x82 nanoslp syz-executor 19098 114285 75834 0 3 0x82 nanoslp syz-executor 95495 431876 75834 0 3 0x82 nanoslp syz-executor 68493 382975 75834 0 3 0x82 nanoslp syz-executor 61996 24649 75834 0 3 0x82 nanoslp syz-executor 14095 290044 75834 0 3 0x82 nanoslp syz-executor 75834 218116 24559 0 3 0x82 kqread syz-executor 24559 62220 93143 0 3 0x10008a sigsusp ksh 93143 231011 1724 0 3 0x98 kqread sshd-session 1724 78165 20658 0 3 0x92 kqread sshd-session 20658 45894 1 0 3 0x88 kqread sshd 11931 476007 24488 74 3 0x1100092 bpf pflogd 24488 58792 1 0 3 0x80 sbwait pflogd 27309 249932 321 73 3 0x1100090 kqread syslogd 321 305871 1 0 3 0x100082 sbwait syslogd 95096 497488 1 0 3 0x100080 kqread resolvd 27570 457840 727 77 3 0x100092 kqread dhcpleased 43987 455125 727 77 3 0x100092 kqread dhcpleased 727 117450 1 0 3 0x80 kqread dhcpleased 67196 78760 0 0 3 0x14200 bored smr 60698 149388 0 0 3 0x14200 pgzero zerothread 7541 355256 0 0 3 0x14200 aiodoned aiodoned 2756 420593 0 0 3 0x14200 syncer update 71498 412427 0 0 3 0x14200 cleaner cleaner 24140 14411 0 0 3 0x14200 reaper reaper 75540 460832 0 0 3 0x14200 pgdaemon pagedaemon 502 381410 0 0 3 0x14200 bored viomb 86681 34646 0 0 3 0x40014200 acpi0 acpi0 59973 105356 0 0 3 0x40014200 idle1 62982 671 0 0 3 0x14200 bored softnet3 45928 258020 0 0 3 0x14200 bored softnet2 23771 30154 0 0 3 0x14200 bored softnet1 66876 518188 0 0 3 0x14200 bored softnet0 20308 333666 0 0 3 0x14200 bored systqmp 3441 381195 0 0 3 0x14200 bored systq 38497 436560 0 0 3 0x14200 tmoslp softclockmp 4433 516189 0 0 3 0x40014200 tmoslp softclock 41009 354382 0 0 7 0x40014200 idle0 1 151052 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff83634370) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 sleep_setup+0xc6 sys/kern/kern_synch.c:350 #4 rwsleep+0xcb sys/kern/kern_synch.c:298 #5 futex_wait+0x372 sys/kern/sys_futex.c:250 #6 sys_futex+0x149 sys/kern/sys_futex.c:101 #7 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #7 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 CPU 1: exclusive mutex shmpl r = 0 (0xffffffff8351e048) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_put+0x9f sys/kern/subr_pool.c:797 #4 shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] #4 shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 #5 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 80920 (syz-executor) thread 0xffff800033d86a40 (1843) exclusive rwlock futex r = 0 (0xffffffff834d6c80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sys_futex+0x69 sys/kern/sys_futex.c:98 #2 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #2 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 Process 80920 (syz-executor) thread 0xffff800033d867b8 (425999) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835157e0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x21e sys/kern/kern_synch.c:416 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #6 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #7 shm_delete_mapping+0xa0 sys/kern/sysv_shm.c:170 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff8351e048) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_put+0x9f sys/kern/subr_pool.c:797 #4 shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] #4 shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 #5 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 9811 (syz-executor) thread 0xffff8000ffffdbe8 (172816) exclusive rrwlock inode r = 0 (0xfffffd807a9e54e8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 spec_open+0x302 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x708 sys/kern/vfs_vnops.c:177 #8 vndioctl+0xcb1 sys/dev/vnd.c:457 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 #11 sys_ioctl+0x67c #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 Process 1750 (syz-executor) thread 0xffff80002a04a528 (123027) exclusive rwlock sbufrcv r = 0 (0xffff8000012fbd70) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:947 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1082 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:973 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 11187K 11584K 166960K 12470 0 pcb 17 14K 16K 166960K 179 0 rtable 198 7K 8K 166960K 423 0 pf 45 19K 23K 166960K 105 0 ifaddr 39 6K 7K 166960K 64 0 ifgroup 67 2K 2K 166960K 93 0 sysctl 3 0K 1K 166960K 5 0 counters 68 36K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1595 0 iov 1 4K 16K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1373 86K 87K 166960K 2148 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 17 3K 3K 166960K 26 0 dirhash 12 2K 3K 166960K 48 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 89K 166960K 1129 0 sigio 0 0K 0K 166960K 10 0 proc 72 91K 128K 166960K 584 0 subproc 104 6K 6K 166960K 105 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 81 0 in_multi 76 5K 7K 166960K 140 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 492 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 73K 82K 166960K 11472 0 UVM aobj 16 4K 4K 166960K 19 0 pinsyscall 43 86K 102K 166960K 2207 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 50 0 NDP 14 0K 2K 166960K 44 0 temp 43 6816K 6943K 166960K 25364 0 kqueue 14 22K 28K 166960K 144 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 78 0 74 1 0 1 1 0 8 0 rtentry 112 122 0 36 4 0 4 4 0 8 0 unpcb 144 420 0 395 6 4 2 4 0 8 1 syncache 336 5 0 5 3 3 0 1 0 8 0 tcpcb 808 241 0 231 8 0 8 8 0 8 6 arp 120 19 0 6 1 0 1 1 0 8 0 inpcb 336 859 0 841 18 8 10 13 0 8 8 nd6 136 27 0 8 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 6 0 6 2 1 1 1 0 8 1 pfstscr 40 45 0 42 2 1 1 1 0 8 0 pffrag 232 6 0 1 1 0 1 1 0 482 0 pffrnode 88 6 0 1 1 0 1 1 0 8 0 pffrent 40 52 0 47 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 96 0 34 1 0 1 1 0 8 0 pfstkey 128 138 0 67 3 0 3 3 0 8 0 pfstate 376 112 0 53 7 0 7 7 0 8 0 pfrule 1344 48 0 39 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 470 0 113 29 4 25 29 0 8 0 art_table 32 472 0 113 4 0 4 4 0 8 0 art_node 16 117 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 133 0 133 1 0 1 1 0 8 1 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 20 0 5 1 0 1 1 0 8 0 shmpl 112 16 0 3 1 0 1 1 0 8 0 pool(shmpl): free list modified: page 0xfffffd807aa75000; item ordinal 0; addr 0xfffffd807aa750e0 (p 0xfffffd807aa75000); offset 0x1c=0xdeafbeac dirhash 1024 42 0 25 3 0 3 3 0 8 0 dino2pl 256 3170 0 1663 96 0 96 96 0 8 0 ffsino 272 3170 0 1663 102 0 102 102 0 8 0 nchpl 144 4581 0 2893 63 0 63 63 0 8 0 uvmvnodes 80 3795 0 0 78 0 78 78 0 8 0 vnodes 216 3795 0 0 211 0 211 211 0 8 0 namei 1024 13408 0 13408 2 1 1 1 0 8 1 percpumem 16 57 0 9 1 0 1 1 0 8 0 kstatmem 264 46 0 18 4 2 2 3 0 8 0 scxspl 216 14329 0 14329 11 5 6 8 1 8 6 plimitpl 152 103 0 85 1 0 1 1 0 8 0 sigapl 424 1432 0 1380 7 1 6 7 0 8 0 futexpl 64 13122 0 13113 1 0 1 1 0 8 0 knotepl 120 550 0 0 17 0 17 17 0 8 0 kqueuepl 216 219 0 206 3 2 1 3 0 8 0 pipepl 320 141 0 113 3 0 3 3 0 8 0 fdescpl 496 1411 0 1379 5 0 5 5 0 8 0 filepl 152 5956 0 5683 20 4 16 16 0 8 5 lockfpl 104 353 0 351 1 0 1 1 0 8 0 lockfspl 48 136 0 134 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 867 0 853 1 0 1 1 0 8 0 zombiepl 144 1380 0 1380 2 1 1 1 0 8 1 processpl 1160 1432 0 1380 5 1 4 5 0 8 0 procpl 648 2712 0 2651 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 5 0 5 2 2 0 1 0 8 0 sockpl 664 1367 0 1320 20 8 12 15 0 8 8 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 155 0 0 20 0 20 20 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 61 0 0 2 0 2 2 0 8 0 mbufpl 256 273 0 0 16 0 16 16 0 8 0 bufpl 280 5027 0 110 352 0 352 352 0 8 0 anonpl 24 233837 0 230344 78 24 54 58 0 185 25 amapchunkpl 152 37295 0 36781 31 7 24 26 0 158 4 amappl16 200 5520 0 5493 31 24 7 15 0 8 4 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 146 0 131 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 1 0 1 0 8 0 amappl12 168 2062 0 2030 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 167 0 167 1 1 0 1 0 8 0 amappl8 136 18 0 16 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 164 0 162 1 0 1 1 0 8 0 amappl5 112 147 0 136 1 0 1 1 0 8 0 amappl4 104 304 0 285 1 0 1 1 0 8 0 amappl3 96 7081 0 6979 3 0 3 3 0 8 0 amappl2 88 1689 0 1604 3 1 2 3 0 8 0 amappl1 80 10705 0 10129 14 0 14 14 0 8 0 amappl 88 10992 0 10814 5 0 5 5 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 18 0 3 1 0 1 1 0 8 0 pool(aobjpl): free list modified: page 0xfffffd807adf7000; item ordinal 0; addr 0xfffffd807adf7798 (p 0xfffffd807adf7000); offset 0xc=0xdeaf4151 uaddrrnd 24 1411 0 1379 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1411 0 1379 1 0 1 1 0 8 0 vmmpekpl 168 11011 0 10973 3 0 3 3 0 8 0 vmmpepl 168 90721 0 88800 102 12 90 94 0 357 5 vmsppl 440 1410 0 1379 6 2 4 5 0 8 0 rwobjpl 56 29127 0 24376 68 1 67 67 0 8 0 pdppl 4096 2829 0 2758 109 38 71 83 0 8 0 pvpl 32 16488 0 0 133 0 133 133 0 265 0 pmappl 248 1410 0 1379 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 422 0 57 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8341cff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffffffff8341cff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{0}> trace x86_ipi_db(ffffffff8341cff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffffffff8341cff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8307769b) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff8351e038,fffffd807aa750e0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff8351e038,fffffd807aa750e0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371f6e60) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371f6e60) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd1b52849b30, count: 8 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8307769b) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff8351e038,fffffd807aa750e0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff8351e038,fffffd807aa750e0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd806bf396e8,ffff80000129d008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371f6e60) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371f6e60) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd1b52849b30, count: -7