panic: pool_do_get: shmpl free list modified: page 0xfffffd806b9b2000; item addr 0xfffffd806b9b2c40; offset 0x40=0x68a75341 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 219836 94608 32767 0x10 0 0 syz-executor *218113 98984 32767 0x10 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8336630c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b7748,1,ffff80003c4a8ee8) at pool_do_get+0x5df pool_get(ffffffff839b7748,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c426a88,ffff80003c4a9140,0,ffff80003c4a9090) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c426a88,ffff80003c4a9140,ffff80003c4a9090) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4a9140) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a9140) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4679ed216f0, 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 0xfffffd806b9b2000; item addr 0xfffffd806b9b2c40; offset 0x40=0x68a75341 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8336630c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b7748,1,ffff80003c4a8ee8) at pool_do_get+0x5df pool_get(ffffffff839b7748,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c426a88,ffff80003c4a9140,0,ffff80003c4a9090) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c426a88,ffff80003c4a9140,ffff80003c4a9090) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4a9140) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a9140) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4679ed216f0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4a8d10 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80003c426a88 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4f5207335163ac10 r11 0xe28bde19a10aef1d r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff81b4d6a5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4a8d00 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=218113 pid=98984 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=86, usrpri=86, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c426fb8,0xffff80003c4274f8 process=0xffff80003c47eb80 user=0xffff80003c4a4000, vmspace=0xfffffd806bb975e0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94608 219836 92228 32767 7 0x10 syz-executor 94608 417843 92228 32767 2 0x4000010 syz-executor 53940 436372 26282 32767 2 0x10 syz-executor 53940 380492 26282 32767 3 0x4000090 fsleep syz-executor 35985 209258 5921 32767 2 0x10 syz-executor 35985 182228 5921 32767 3 0x4000090 kqsel syz-executor 98984 236024 31066 32767 2 0x10 syz-executor *98984 218113 31066 32767 7 0x4000010 syz-executor 50659 145184 88930 32767 2 0x10 syz-executor 82064 189173 13100 32767 2 0x10 syz-executor 82064 370895 13100 32767 3 0x4000090 fsleep syz-executor 22367 22971 94882 0 3 0x2 biowait syz-executor 3896 108077 56769 32767 3 0x90 nanoslp syz-executor 3896 201894 56769 32767 2 0x4000010 syz-executor 9847 416861 0 0 3 0x14200 bored sosplice 88930 439808 72119 32767 3 0x90 nanoslp syz-executor 26282 55706 9480 32767 3 0x90 nanoslp syz-executor 5921 63030 90535 32767 3 0x90 nanoslp syz-executor 56769 234540 46198 32767 3 0x90 nanoslp syz-executor 92228 153153 78828 32767 3 0x90 nanoslp syz-executor 31066 97238 54322 32767 3 0x90 nanoslp syz-executor 13100 447132 38321 32767 3 0x90 nanoslp syz-executor 9480 14687 94882 0 3 0x82 wait syz-executor 78828 73356 94882 0 3 0x82 wait syz-executor 90535 382790 94882 0 3 0x82 wait syz-executor 38321 44274 94882 0 3 0x82 wait syz-executor 54322 5109 94882 0 3 0x82 wait syz-executor 46198 367678 94882 0 3 0x82 wait syz-executor 72119 466883 94882 0 3 0x82 wait syz-executor 94882 339757 17371 0 2 0x2 syz-executor 17371 86087 55623 0 3 0x10008a sigsusp ksh 55623 129726 68805 0 3 0x98 kqread sshd-session 68805 61884 67382 0 3 0x92 kqread sshd-session 50993 272269 1 0 3 0x100083 ttyin getty 67382 315348 1 0 3 0x88 kqread sshd 15549 145512 93942 73 3 0x1100090 kqread syslogd 93942 135817 1 0 3 0x100082 sbwait syslogd 53285 350962 1 0 3 0x100080 kqread resolvd 80508 338271 90019 77 3 0x100092 kqread dhcpleased 2377 471060 90019 77 3 0x100092 kqread dhcpleased 90019 444044 1 0 3 0x80 kqread dhcpleased 89668 341179 0 0 3 0x14200 bored smr 94689 426384 0 0 2 0x14200 zerothread 83505 120309 0 0 3 0x14200 aiodoned aiodoned 4621 179499 0 0 3 0x14200 syncer update 17471 218630 0 0 3 0x14200 cleaner cleaner 19642 513841 0 0 3 0x14200 reaper reaper 3553 423446 0 0 3 0x14200 pgdaemon pagedaemon 62058 492177 0 0 3 0x14200 bored viomb 33702 321671 0 0 3 0x40014200 acpi0 acpi0 59787 379335 0 0 3 0x40014200 idle1 62764 418214 0 0 3 0x14200 bored softnet7 64153 50794 0 0 3 0x14200 bored softnet6 39561 21512 0 0 3 0x14200 bored softnet5 75725 471070 0 0 3 0x14200 bored softnet4 60101 84123 0 0 3 0x14200 bored softnet3 24966 434144 0 0 3 0x14200 bored softnet2 98213 496633 0 0 3 0x14200 bored softnet1 45445 420427 0 0 3 0x14200 bored softnet0 6226 299059 0 0 3 0x14200 bored systqmp 21125 206720 0 0 3 0x14200 bored systq 94986 300053 0 0 3 0x14200 tmoslp softclockmp 50912 168895 0 0 3 0x40014200 tmoslp softclock 38669 436415 0 0 3 0x40014200 idle0 1 415539 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 (0xffffffff839b7760) #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:748 #7 Xsyscall+0x128 Process 98984 (syz-executor) thread 0xffff80003c426a88 (218113) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83886790) #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:748 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff839b7760) #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:748 #7 Xsyscall+0x128 Process 22367 (syz-executor) thread 0xffff80003c427a18 (22971) exclusive rrwlock inode r = 0 (0xfffffd8071184488) #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:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f2c47c8) #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:748 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 10958K 10968K 166960K 11303 0 pcb 17 12K 12K 166960K 17 0 rtable 189 5K 6K 166960K 263 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 3 1K 9K 166960K 7 0 counters 66 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 31 0 iov 0 0K 2K 166960K 4 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1403 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 86K 125K 166960K 294 0 sigio 0 0K 0K 166960K 1 0 proc 58 99K 147K 166960K 516 0 subproc 63 3K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 17 0 in_multi 88 6K 7K 166960K 99 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 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 351 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 227 143K 166K 166960K 3994 0 UVM aobj 5 2K 2K 166960K 6 0 pinsyscall 45 90K 114K 166960K 1296 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 10 0K 2K 166960K 27 0 temp 34 8642K 8706K 166960K 4330 0 kqueue 13 20K 29K 166960K 54 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 55 0 52 1 0 1 1 0 8 0 rtentry 176 98 0 12 5 0 5 5 0 8 0 unpcb 144 106 0 90 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 46 0 41 1 0 1 1 0 8 0 arp 128 10 0 1 1 0 1 1 0 8 0 inpcb 328 153 0 144 2 0 2 2 0 8 0 nd6 144 19 0 4 1 0 1 1 0 8 0 kcovpl 48 13 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 476 0 67 29 0 29 29 0 8 2 art_table 40 477 0 67 5 0 5 5 0 8 0 art_node 32 98 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 pool(0xffffffff839b7748:shmpl): page inconsistency: page 0xfffffd806b9b2000; 32 on list, 2 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1734 0 221 95 0 95 95 0 8 0 ffsino 296 1734 0 221 117 0 117 117 0 8 0 nchpl 144 2113 0 431 63 0 63 63 0 8 0 uvmvnodes 80 1860 0 0 38 0 38 38 0 8 0 vnodes 216 1860 0 0 104 0 104 104 0 8 0 namei 1024 6404 0 6403 2 0 2 2 0 8 1 percpumem 16 49 0 1 1 0 1 1 0 8 0 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 7864 0 7863 9 1 8 8 1 8 7 plimitpl 152 71 0 47 2 0 2 2 0 8 1 sigapl 424 561 0 502 8 0 8 8 0 8 1 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 224 49 0 38 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 538 0 502 4 0 4 4 0 8 0 filepl 160 2125 0 1924 13 0 13 13 0 8 4 lockfpl 104 46 0 44 1 0 1 1 0 8 0 lockfspl 48 12 0 10 1 0 1 1 0 8 0 sessionpl 144 27 0 12 1 0 1 1 0 8 0 pgrppl 48 42 0 19 1 0 1 1 0 8 0 ucredpl 104 352 0 334 1 0 1 1 0 8 0 zombiepl 144 502 0 502 1 0 1 1 0 8 1 processpl 1232 561 0 502 7 1 6 6 0 8 0 procpl 664 794 0 729 7 0 7 7 0 8 1 sockpl 752 315 0 287 5 0 5 5 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 1189 0 0 75 0 75 75 0 8 0 bufpl 280 3119 0 116 215 0 215 215 0 8 0 anonpl 32 9549 0 0 78 0 78 78 0 246 0 amapchunkpl 152 13021 0 12524 36 3 33 33 0 158 13 amappl16 200 2896 0 2873 15 1 14 14 0 8 10 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 103 0 92 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1133 0 1099 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 18 0 17 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 175 0 172 1 0 1 1 0 8 0 amappl5 112 118 0 112 1 0 1 1 0 8 0 amappl4 104 266 0 250 1 0 1 1 0 8 0 amappl3 96 2096 0 1978 4 0 4 4 0 8 0 amappl2 88 596 0 542 2 0 2 2 0 8 0 amappl1 80 8701 0 8139 14 0 14 14 0 8 1 amappl 88 3354 0 3189 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 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 538 0 502 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 538 0 502 1 0 1 1 0 8 0 vmmpekpl 168 5852 0 5813 3 0 3 3 0 8 0 vmmpepl 168 41183 0 39160 104 0 104 104 0 357 12 vmsppl 488 537 0 502 7 1 6 6 0 8 1 rwobjpl 80 16319 0 13643 60 0 60 60 0 8 0 pdppl 4096 1084 0 1004 110 30 80 98 0 8 0 pvpl 32 16196 0 0 131 0 131 131 0 265 0 pmappl 256 537 0 502 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 346 0 33 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378bff0) 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 __mp_lock(ffffffff83886588) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83886588) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c451820,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x70d49836dce0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8378bff0) 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 __mp_lock(ffffffff83886588) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83886588) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c451820,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x70d49836dce0, 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:438 panic(ffffffff8336630c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b7748,1,ffff80003c4a8ee8) at pool_do_get+0x5df pool_get(ffffffff839b7748,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c426a88,ffff80003c4a9140,0,ffff80003c4a9090) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c426a88,ffff80003c4a9140,ffff80003c4a9090) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4a9140) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a9140) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4679ed216f0, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8336630c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b7748,1,ffff80003c4a8ee8) at pool_do_get+0x5df pool_get(ffffffff839b7748,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c426a88,ffff80003c4a9140,0,ffff80003c4a9090) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c426a88,ffff80003c4a9140,ffff80003c4a9090) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4a9140) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a9140) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4679ed216f0, count: -8