panic: pool_do_get: shmpl free list modified: page 0xfffffd80602f6000; item addr 0xfffffd80602f6150; offset 0x0=0xee01 != 0xeceee87aee94d8f5 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *324996 83603 0 0 0x4000000 1K syz-executor 236334 86583 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8300f8c6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835b9088,1,ffff80003727aa18) at pool_do_get+0x59d pool_get(ffffffff835b9088,1) at pool_get+0x141 shmget_allocate_segment(ffff8000372caf70,ffff80003727ac70,40,ffff80003727abc0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000372caf70,ffff80003727ac70,ffff80003727abc0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80003727ac70) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003727ac70) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a5618ff150, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: pool_do_get: shmpl free list modified: page 0xfffffd80602f6000; item addr 0xfffffd80602f6150; offset 0x0=0xee01 != 0xeceee87aee94d8f5 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8300f8c6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835b9088,1,ffff80003727aa18) at pool_do_get+0x59d pool_get(ffffffff835b9088,1) at pool_get+0x141 shmget_allocate_segment(ffff8000372caf70,ffff80003727ac70,40,ffff80003727abc0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000372caf70,ffff80003727ac70,ffff80003727abc0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80003727ac70) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003727ac70) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a5618ff150, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003727a860 rbx 0xffff800029b7cdcf rdx 0 rcx 0xffff8000372caf70 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2a2296dd27bd93e3 r11 0xd42d6744d0725b r12 0xffff800029b7cbd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82a31ee5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003727a850 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=324996 pid=83603 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=0xffff8000372ca7d8,0xffff8000372ca050 process=0xffff8000ffffb670 user=0xffff800037275000, vmspace=0xfffffd806bc47c08 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83603 286687 45962 0 2 0 syz-executor *83603 324996 45962 0 7 0x4000000 syz-executor 83603 466121 45962 0 3 0x4000080 fsleep syz-executor 86583 236334 54097 0 7 0 syz-executor 86583 267100 54097 0 3 0x4000000 biowait syz-executor 45504 101593 704 0 2 0 syz-executor 45504 73385 704 0 3 0x4000080 fsleep syz-executor 80749 377572 65932 0 2 0 syz-executor 80749 97162 65932 0 3 0x4000080 fsleep syz-executor 18137 192335 42669 0 2 0 syz-executor 18137 456252 42669 0 3 0x4000080 fsleep syz-executor 57834 169687 75081 0 3 0x80 nanoslp syz-executor 57834 121737 75081 0 3 0x4000080 kqsel syz-executor 57834 345733 75081 0 3 0x4000080 fsleep syz-executor 53003 77610 21762 0 3 0x80 nanoslp syz-executor 53003 99128 21762 0 3 0x4000080 piperd syz-executor 53003 462814 21762 0 3 0x4000080 fsleep syz-executor 75081 13635 57921 0 3 0x82 nanoslp syz-executor 45962 214185 57921 0 3 0x82 nanoslp syz-executor 67159 190720 57921 0 3 0x82 nanoslp syz-executor 65932 223869 57921 0 3 0x82 nanoslp syz-executor 42669 491329 57921 0 3 0x82 nanoslp syz-executor 21762 16756 57921 0 3 0x82 nanoslp syz-executor 704 492087 57921 0 3 0x82 nanoslp syz-executor 54097 140412 57921 0 3 0x82 nanoslp syz-executor 4147 13222 0 0 3 0x14200 acct acct 28559 482814 0 0 3 0x14280 nfsidl nfsio 91454 376643 0 0 3 0x14280 nfsidl nfsio 88903 244218 0 0 3 0x14280 nfsidl nfsio 10454 239816 0 0 3 0x14280 nfsidl nfsio 88374 502624 0 0 3 0x14280 nfsidl nfsio 26384 85066 0 0 3 0x14280 nfsidl nfsio 14995 52994 0 0 3 0x14280 nfsidl nfsio 34543 92423 0 0 3 0x14280 nfsidl nfsio 10934 63092 0 0 3 0x14280 nfsidl nfsio 9559 505054 0 0 3 0x14280 nfsidl nfsio 8888 500180 0 0 3 0x14280 nfsidl nfsio 68915 328797 0 0 3 0x14280 nfsidl nfsio 46747 100423 0 0 3 0x14280 nfsidl nfsio 31639 466827 0 0 3 0x14280 nfsidl nfsio 17453 392246 0 0 3 0x14280 nfsidl nfsio 53171 286537 0 0 3 0x14280 nfsidl nfsio 25836 373478 0 0 3 0x14280 nfsidl nfsio 30641 19464 0 0 3 0x14280 nfsidl nfsio 56839 203077 0 0 3 0x14280 nfsidl nfsio 64868 276117 0 0 3 0x14280 nfsidl nfsio 71321 191138 0 0 3 0x14200 bored sosplice 57921 46644 32073 0 3 0x82 kqread syz-executor 32073 258837 19063 0 3 0x10008a sigsusp ksh 19063 130400 60228 0 3 0x98 kqread sshd-session 60228 306736 86568 0 3 0x92 kqread sshd-session 40936 506068 1 0 3 0x100083 ttyin getty 86568 422475 1 0 3 0x88 kqread sshd 95266 337309 52570 74 3 0x1100092 bpf pflogd 52570 314955 1 0 3 0x80 sbwait pflogd 57906 296244 68872 73 3 0x1100010 biowait syslogd 68872 69658 1 0 3 0x100082 sbwait syslogd 21455 301990 1 0 3 0x100080 kqread resolvd 44584 279981 441 77 3 0x100092 kqread dhcpleased 60469 91060 441 77 3 0x100092 kqread dhcpleased 441 77468 1 0 3 0x80 kqread dhcpleased 90399 351813 0 0 3 0x14200 bored smr 30539 116818 0 0 2 0x14200 zerothread 46481 520338 0 0 3 0x14200 aiodoned aiodoned 80033 476013 0 0 3 0x14200 syncer update 65062 21881 0 0 3 0x14200 cleaner cleaner 45019 359759 0 0 3 0x14200 reaper reaper 60126 350961 0 0 3 0x14200 pgdaemon pagedaemon 57318 368571 0 0 3 0x14200 bored viomb 29221 95245 0 0 3 0x40014200 acpi0 acpi0 66911 144584 0 0 3 0x40014200 idle1 26516 4986 0 0 3 0x14200 bored softnet3 91888 430037 0 0 3 0x14200 bored softnet2 91573 59891 0 0 3 0x14200 bored softnet1 43536 161113 0 0 3 0x14200 bored softnet0 83213 427983 0 0 3 0x14200 bored systqmp 12523 308878 0 0 3 0x14200 bored systq 66525 507872 0 0 3 0x14200 tmoslp softclockmp 48033 453965 0 0 3 0x40014200 tmoslp softclock 5016 64367 0 0 3 0x40014200 idle0 1 420564 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex shmpl r = 0 (0xffffffff835b9098) #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_get+0x103 sys/kern/subr_pool.c:579 #4 shmget_allocate_segment+0x1a7 #5 sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 83603 (syz-executor) thread 0xffff8000372caf70 (324996) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83507990) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff835b9098) #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_get+0x103 sys/kern/subr_pool.c:579 #4 shmget_allocate_segment+0x1a7 #5 sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 86583 (syz-executor) thread 0xffff8000fffeb6f8 (267100) exclusive rrwlock inode r = 0 (0xfffffd80602590a0) #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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1733 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x102 sys/kern/vfs_vops.c:121 #10 domknodat+0x47e sys/kern/vfs_syscalls.c:1624 #11 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #11 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80602593d0) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #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 Process 57906 (syslogd) thread 0xffff8000ffffd960 (296244) exclusive rrwlock inode r = 0 (0xfffffd806e14e3d0) #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 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 14336K 14561K 166960K 12107 0 pcb 19 13K 14K 166960K 198 0 rtable 224 7K 8K 166960K 896 0 pf 39 18K 19K 166960K 117 0 ifaddr 45 8K 8K 166960K 129 0 ifgroup 63 2K 2K 166960K 158 0 sysctl 2 0K 0K 166960K 2 0 counters 68 36K 36K 166960K 120 0 ioctlops 0 0K 4K 166960K 1627 0 iov 1 12K 28K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1424 90K 90K 166960K 2124 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 88 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 18 65K 97K 166960K 973 0 sigio 1 0K 0K 166960K 15 0 proc 72 91K 140K 166960K 1043 0 subproc 104 6K 6K 166960K 312 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 200 0 in_multi 99 7K 7K 166960K 302 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 649 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 254 74K 92K 166960K 9693 0 UVM aobj 25 4K 6K 166960K 30 0 pinsyscall 43 86K 106K 166960K 2483 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 42 0 NDP 14 0K 2K 166960K 90 0 temp 76 6824K 7072K 166960K 38924 0 kqueue 13 20K 30K 166960K 109 0 SYN cache 2 10K 18K 166960K 3 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 120 201 0 197 3 2 1 3 0 8 0 rtentry 112 306 0 204 4 1 3 4 0 8 0 unpcb 144 697 0 679 5 4 1 4 0 8 0 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 283 0 277 11 7 4 8 0 8 2 arp 120 53 0 35 1 0 1 1 0 8 0 inpcb 336 1092 0 1081 15 8 7 7 0 8 5 nd6 136 76 0 52 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 24 0 16 1 0 1 1 0 8 0 ppxss 1168 7 0 7 2 2 0 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 6 0 0 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 pfstitem 24 69 0 30 1 0 1 1 0 8 0 pfstkey 128 69 0 30 2 0 2 2 0 8 0 pfstate 376 68 0 30 4 0 4 4 0 8 0 pfrule 1344 22 0 16 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1269 0 825 32 4 28 29 0 8 0 art_table 32 1271 0 825 4 0 4 4 0 8 0 art_node 16 305 0 214 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 84 0 74 1 0 1 1 0 8 0 shmpl 112 27 0 6 1 0 1 1 0 8 0 shmpl: pool(0xffffffff835b9088:shmpl): free list modified: page 0xfffffd80602f6000; item ordinal 0; addr 0xfffffd80602f6150 (p 0xfffffd80602f6000); offset 0x0=0xee01 shmpl: pool(0xffffffff835b9088:shmpl): page inconsistency: page 0xfffffd80602f6000; item ordinal 1; addr 0xcad3fd61467477cf dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2690 0 1159 97 0 97 97 0 8 0 ffsino 272 2690 0 1159 104 1 103 103 0 8 0 nchpl 144 3745 0 2036 64 0 64 64 0 8 0 uvmvnodes 80 3364 0 0 69 0 69 69 0 8 0 vnodes 216 3364 0 0 187 0 187 187 0 8 0 namei 1024 14574 0 14573 2 1 1 2 0 8 0 percpumem 16 74 0 26 1 0 1 1 0 8 0 kstatmem 264 80 0 52 2 0 2 2 0 8 0 scxspl 216 18103 0 18101 11 8 3 8 1 8 2 plimitpl 152 290 0 271 1 0 1 1 0 8 0 sigapl 424 1285 0 1213 10 1 9 10 0 8 0 futexpl 64 9074 0 9068 2 1 1 1 0 8 0 knotepl 120 507 0 0 15 0 15 15 0 8 0 kqueuepl 216 262 0 251 5 4 1 5 0 8 0 pipepl 320 278 0 249 8 5 3 8 0 8 0 fdescpl 496 1227 0 1195 7 2 5 6 0 8 0 filepl 152 7355 0 7100 22 9 13 16 0 8 2 lockfpl 104 290 0 287 1 0 1 1 0 8 0 lockfspl 48 103 0 100 1 0 1 1 0 8 0 sessionpl 144 41 0 32 1 0 1 1 0 8 0 pgrppl 48 71 0 54 1 0 1 1 0 8 0 ucredpl 104 823 0 809 1 0 1 1 0 8 0 zombiepl 144 1214 0 1213 1 0 1 1 0 8 0 processpl 1160 1285 0 1213 7 1 6 7 0 8 0 procpl 648 2285 0 2203 9 1 8 9 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 5 0 5 2 2 0 1 0 8 0 sockpl 664 2001 0 1968 17 8 9 10 0 8 5 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 253 0 0 32 0 32 32 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1207 0 0 75 0 75 75 0 8 0 bufpl 280 6748 0 574 442 0 442 442 0 8 0 anonpl 24 224945 0 219475 74 11 63 72 0 185 15 amapchunkpl 152 31197 0 30581 37 3 34 36 0 158 9 amappl16 200 4991 0 4933 27 14 13 19 0 8 5 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 151 0 139 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 2132 0 2100 3 1 2 2 0 8 0 amappl11 160 79 0 65 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 128 0 127 1 0 1 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 144 0 131 1 0 1 1 0 8 0 amappl6 120 348 0 346 1 0 1 1 0 8 0 amappl5 112 214 0 202 1 0 1 1 0 8 0 amappl4 104 389 0 372 1 0 1 1 0 8 0 amappl3 96 6357 0 6238 4 0 4 4 0 8 0 amappl2 88 927 0 858 2 0 2 2 0 8 0 amappl1 80 11698 0 11132 14 0 14 14 0 8 0 amappl 88 9144 0 8954 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 9 0 9 3 2 1 1 0 8 1 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 29 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1227 0 1195 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1227 0 1195 1 0 1 1 0 8 0 vmmpekpl 168 11350 0 11306 4 0 4 4 0 8 0 vmmpepl 168 83107 0 81162 102 10 92 98 0 357 7 vmsppl 440 1226 0 1195 6 2 4 5 0 8 0 rwobjpl 56 29114 0 24750 64 1 63 63 0 8 0 pdppl 4096 2461 0 2390 121 46 75 87 0 8 4 pvpl 32 30148 0 0 244 0 244 244 0 265 0 pmappl 248 1226 0 1195 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 505 0 72 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8344eff0) 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 __mp_lock(ffffffff83507788) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83507788) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800031784bb0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x740b7f747cd0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8344eff0) 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 __mp_lock(ffffffff83507788) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83507788) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800031784bb0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x740b7f747cd0, count: -6 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(ffffffff8300f8c6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835b9088,1,ffff80003727aa18) at pool_do_get+0x59d pool_get(ffffffff835b9088,1) at pool_get+0x141 shmget_allocate_segment(ffff8000372caf70,ffff80003727ac70,40,ffff80003727abc0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000372caf70,ffff80003727ac70,ffff80003727abc0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80003727ac70) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003727ac70) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a5618ff150, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8300f8c6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835b9088,1,ffff80003727aa18) at pool_do_get+0x59d pool_get(ffffffff835b9088,1) at pool_get+0x141 shmget_allocate_segment(ffff8000372caf70,ffff80003727ac70,40,ffff80003727abc0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000372caf70,ffff80003727ac70,ffff80003727abc0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80003727ac70) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003727ac70) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a5618ff150, count: -8