panic: pool_do_get: shmpl free list modified: page 0xfffffd806b871000; item addr 0xfffffd806b871000; offset 0x40=0x68b05b61 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 238370 11462 32767 0x10 0 1 syz-executor *446358 11462 32767 0x10 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83367500) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838d5228,1,ffff80003c497c18) at pool_do_get+0x5df pool_get(ffffffff838d5228,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c459a18,ffff80003c497e70,7,ffff80003c497dc0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c459a18,ffff80003c497e70,ffff80003c497dc0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c497e70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497e70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7fa110b8d90, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: pool_do_get: shmpl free list modified: page 0xfffffd806b871000; item addr 0xfffffd806b871000; offset 0x40=0x68b05b61 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83367500) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838d5228,1,ffff80003c497c18) at pool_do_get+0x5df pool_get(ffffffff838d5228,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c459a18,ffff80003c497e70,7,ffff80003c497dc0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c459a18,ffff80003c497e70,ffff80003c497dc0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c497e70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497e70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7fa110b8d90, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c497a40 rbx 0xffffffff837f9ddf cpu_info_full_primary+0x2ddf rdx 0xffff800001463f40 rcx 0xffff80003c459a18 rax 0xffffffff837f8ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd6573753de33c262 r11 0xaed0d49e3dff6758 r12 0xffffffff837f9be0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff82d888f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c497a30 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=446358 pid=11462 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c459cb0,0xffffffff8398cdc0 process=0xffff80003a02a6b0 user=0xffff80003c492000, vmspace=0xfffffd806bc0e9b0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11462 238370 316 32767 7 0x10 syz-executor *11462 446358 316 32767 7 0x4000010 syz-executor 98968 460792 5678 32767 3 0x90 nanoslp syz-executor 98968 102946 5678 32767 3 0x4000090 lockf syz-executor 98968 235674 5678 32767 3 0x4000090 lockf syz-executor 98968 286149 5678 32767 3 0x4000090 fsleep syz-executor 98968 185345 5678 32767 3 0x4000090 fsleep syz-executor 98968 186904 5678 32767 3 0x4000090 fsleep syz-executor 89239 106237 51155 32767 3 0x90 nanoslp syz-executor 89239 90554 51155 32767 3 0x4000090 netcon syz-executor 89239 131981 51155 32767 3 0x4000090 fsleep syz-executor 56505 327150 22955 32767 3 0x90 nanoslp syz-executor 56505 210857 22955 32767 3 0x4000090 msgwait syz-executor 56505 396211 22955 32767 3 0x4000090 fsleep syz-executor 9705 172170 57618 32767 3 0x90 nanoslp syz-executor 9705 394952 57618 32767 3 0x4000090 ttyout syz-executor 9705 386767 57618 32767 3 0x4000090 fsleep syz-executor 9705 201554 57618 32767 3 0x4000090 fsleep syz-executor 12520 517163 0 0 3 0x14200 bored sosplice 57618 293851 1309 32767 3 0x90 nanoslp syz-executor 316 344394 9435 32767 3 0x90 nanoslp syz-executor 73587 354522 55563 32767 3 0x90 nanoslp syz-executor 22955 178442 73102 32767 3 0x90 nanoslp syz-executor 57109 260018 37990 32767 3 0x10 biowait syz-executor 99496 161359 5942 32767 3 0x10 biowait syz-executor 51155 428570 42481 32767 3 0x90 nanoslp syz-executor 5678 375411 3712 32767 3 0x90 nanoslp syz-executor 9435 151386 47207 0 3 0x82 wait syz-executor 73102 497826 47207 0 3 0x82 wait syz-executor 1309 43887 47207 0 3 0x82 wait syz-executor 37990 94705 47207 0 3 0x82 wait syz-executor 55563 205939 47207 0 3 0x82 wait syz-executor 5942 316432 47207 0 3 0x82 wait syz-executor 42481 478321 47207 0 3 0x82 wait syz-executor 3712 164799 47207 0 3 0x82 wait syz-executor 47207 406545 42037 0 3 0x82 kqread syz-executor 42037 231171 54984 0 3 0x10008a sigsusp ksh 54984 3214 85354 0 3 0x98 kqread sshd-session 85354 296288 90612 0 3 0x92 kqread sshd-session 30630 502652 1 0 3 0x100083 ttyin getty 90612 455598 1 0 3 0x88 kqread sshd 1693 61557 81659 73 3 0x1100090 kqread syslogd 81659 419452 1 0 3 0x100082 sbwait syslogd 89736 69626 1 0 3 0x100080 kqread resolvd 27469 292247 27633 77 3 0x100092 kqread dhcpleased 85242 429251 27633 77 3 0x100092 kqread dhcpleased 27633 419503 1 0 3 0x80 kqread dhcpleased 90986 37323 0 0 3 0x14200 bored smr 92979 196167 0 0 3 0x14200 pgzero zerothread 94710 210676 0 0 3 0x14200 aiodoned aiodoned 60958 361487 0 0 3 0x14200 syncer update 79554 471646 0 0 3 0x14200 cleaner cleaner 34635 418100 0 0 3 0x14200 reaper reaper 31700 503845 0 0 3 0x14200 pgdaemon pagedaemon 49152 151946 0 0 3 0x14200 bored viomb 88169 296322 0 0 3 0x40014200 acpi0 acpi0 2747 35848 0 0 3 0x40014200 idle1 78680 101406 0 0 3 0x14200 bored softnet7 79571 464008 0 0 3 0x14200 bored softnet6 87185 108591 0 0 3 0x14200 bored softnet5 1401 74470 0 0 3 0x14200 bored softnet4 19675 133137 0 0 3 0x14200 bored softnet3 7586 235139 0 0 3 0x14200 bored softnet2 7064 352284 0 0 3 0x14200 bored softnet1 84323 78722 0 0 3 0x14200 bored softnet0 52280 168213 0 0 3 0x14200 bored systqmp 44975 411826 0 0 3 0x14200 bored systq 75592 81905 0 0 3 0x14200 tmoslp softclockmp 16126 309176 0 0 3 0x40014200 tmoslp softclock 92038 513641 0 0 3 0x40014200 idle0 1 322072 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex shmpl r = 0 (0xffffffff838d5240) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pool_get+0x124 sys/kern/subr_pool.c:581 #4 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #5 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 11462 (syz-executor) thread 0xffff80003c459a18 (446358) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838d02f0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:746 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff838d5240) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pool_get+0x124 sys/kern/subr_pool.c:581 #4 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #5 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 57109 (syz-executor) thread 0xffff80002a2e5a10 (260018) exclusive rrwlock inode r = 0 (0xfffffd806b7d3c68) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bd6bb38) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 99496 (syz-executor) thread 0xffff8000ffff2fa0 (161359) exclusive rrwlock inode r = 0 (0xfffffd806b7d36a0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c04d690) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 10957K 10968K 166960K 11278 0 pcb 17 12K 12K 166960K 17 0 rtable 213 6K 6K 166960K 286 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 4 1K 9K 166960K 9 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 34 0 iov 0 0K 16K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1469 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 20 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 89K 125K 166960K 527 0 sigio 0 0K 0K 166960K 8 0 proc 58 99K 147K 166960K 524 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 92 0 in_multi 99 7K 7K 166960K 112 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 391 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 169K 193K 166960K 6460 0 UVM aobj 25 2K 3K 166960K 28 0 pinsyscall 45 90K 116K 166960K 1569 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 35 0 NDP 11 0K 2K 166960K 27 0 temp 54 8646K 8710K 166960K 5382 0 kqueue 13 20K 28K 166960K 93 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 71 0 67 1 0 1 1 0 8 0 rtentry 176 104 0 6 5 0 5 5 0 8 0 unpcb 144 281 0 263 1 0 1 1 0 8 0 syncache 336 15 0 15 1 0 1 1 0 8 1 tcpqe 32 5 0 5 2 1 1 1 0 8 1 tcpcb 736 316 0 307 7 2 5 7 0 8 3 arp 128 12 0 0 1 0 1 1 0 8 0 inpcb 328 637 0 623 12 4 8 12 0 8 6 nd6 144 23 0 5 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 29 29 0 29 29 0 8 0 art_table 40 485 0 29 5 0 5 5 0 8 0 art_node 32 104 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 25 0 3 1 0 1 1 0 8 0 pool(0xffffffff838d5228:shmpl): page inconsistency: page 0xfffffd806b871000; 12 on list, 22 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2165 0 661 95 0 95 95 0 8 0 ffsino 296 2165 0 661 117 0 117 117 0 8 0 nchpl 144 2932 0 1257 63 0 63 63 0 8 0 uvmvnodes 80 2246 0 0 46 0 46 46 0 8 0 vnodes 216 2246 0 0 125 0 125 125 0 8 0 namei 1024 9332 0 9330 1 0 1 1 0 8 0 percpumem 16 49 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 10164 0 10162 9 1 8 8 1 8 7 plimitpl 152 118 0 94 2 0 2 2 0 8 1 sigapl 424 812 0 753 8 0 8 8 0 8 0 knotepl 120 521 0 0 16 0 16 16 0 8 0 kqueuepl 224 510 0 501 11 4 7 11 0 8 6 pipepl 344 152 0 125 5 0 5 5 0 8 2 fdescpl 528 789 0 753 4 0 4 4 0 8 0 filepl 160 4759 0 4538 18 3 15 18 0 8 4 lockfpl 104 136 0 129 1 0 1 1 0 8 0 lockfspl 48 52 0 48 1 0 1 1 0 8 0 sessionpl 144 31 0 15 1 0 1 1 0 8 0 pgrppl 48 45 0 21 1 0 1 1 0 8 0 ucredpl 104 1012 0 993 1 0 1 1 0 8 0 zombiepl 144 754 0 753 1 0 1 1 0 8 0 processpl 1232 812 0 753 7 1 6 6 0 8 0 procpl 664 1495 0 1423 7 0 7 7 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 752 999 0 963 17 7 10 17 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 17 0 17 17 0 8 0 bufpl 280 3870 0 116 269 0 269 269 0 8 0 anonpl 32 11634 0 0 94 0 94 94 0 246 0 amapchunkpl 152 21821 0 21248 42 8 34 39 0 158 9 amappl16 200 4263 0 4240 31 17 14 27 0 8 9 amappl15 192 26 0 26 2 2 0 1 0 8 0 amappl14 184 122 0 112 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1392 0 1356 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 71 0 70 1 0 1 1 0 8 0 amappl9 144 257 0 256 2 1 1 1 0 8 0 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 105 0 95 1 0 1 1 0 8 0 amappl6 120 175 0 171 1 0 1 1 0 8 0 amappl5 112 206 0 199 1 0 1 1 0 8 0 amappl4 104 299 0 284 1 0 1 1 0 8 0 amappl3 96 3817 0 3685 4 0 4 4 0 8 0 amappl2 88 689 0 632 2 0 2 2 0 8 0 amappl1 80 11678 0 11099 15 1 14 15 0 8 0 amappl 88 5698 0 5506 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 27 0 3 1 0 1 1 0 8 0 uaddrrnd 24 789 0 753 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 789 0 753 1 0 1 1 0 8 0 vmmpekpl 168 8688 0 8654 3 0 3 3 0 8 0 vmmpepl 168 59945 0 57858 116 0 116 116 0 357 16 vmsppl 488 788 0 753 7 1 6 6 0 8 1 rwobjpl 80 22503 0 19361 71 0 71 71 0 8 4 pdppl 4096 1586 0 1506 114 30 84 98 0 8 4 pvpl 32 19233 0 0 157 1 156 156 0 265 0 pmappl 256 788 0 753 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 296 0 35 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83367500) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838d5228,1,ffff80003c497c18) at pool_do_get+0x5df pool_get(ffffffff838d5228,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c459a18,ffff80003c497e70,7,ffff80003c497dc0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c459a18,ffff80003c497e70,ffff80003c497dc0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c497e70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497e70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7fa110b8d90, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x73277c8e7ce0, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x73277c8e7ce0, count: -3