panic: pool_do_get: shmpl free list modified: page 0xfffffd80689de000; item addr 0xfffffd80689dea10; offset 0x40=0x6894578f Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 109999 10493 32767 0x10 0 0 syz-executor *188134 10493 32767 0x10 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833628fa) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83967b80,1,ffff80003180f8f8) at pool_do_get+0x5df pool_get(ffffffff83967b80,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003b858d20,ffff80003180fb50,80,ffff80003180faa0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003b858d20,ffff80003180fb50,ffff80003180faa0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003180fb50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003180fb50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49ca2355080, 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 0xfffffd80689de000; item addr 0xfffffd80689dea10; offset 0x40=0x6894578f ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833628fa) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83967b80,1,ffff80003180f8f8) at pool_do_get+0x5df pool_get(ffffffff83967b80,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003b858d20,ffff80003180fb50,80,ffff80003180faa0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003b858d20,ffff80003180fb50,ffff80003180faa0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003180fb50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003180fb50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49ca2355080, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003180f720 rbx 0xffff8000299eeddf rdx 0xffff800001462500 rcx 0xffff80003b858d20 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x325d14811e42b0ff r11 0x1390f4dc7bf39c49 r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff82a0b635 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003180f710 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=188134 pid=10493 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=70, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2b82b0,0xffff8000ffff2d18 process=0xffff80003c478510 user=0xffff80003180a000, vmspace=0xfffffd806ba9fba0 estcpu=20, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22680 80500 85631 32767 2 0x10 syz-executor 22680 102774 85631 32767 3 0x4000090 kqread syz-executor 10493 109999 85150 32767 7 0x10 syz-executor *10493 188134 85150 32767 7 0x4000010 syz-executor 27059 373749 45138 32767 2 0x10 syz-executor 27059 417962 45138 32767 3 0x4000090 fsleep syz-executor 27059 133486 45138 32767 3 0x4000090 fsleep syz-executor 99881 297405 63130 32767 2 0x10 syz-executor 99881 164316 63130 32767 3 0x4000090 fsleep syz-executor 83659 238908 0 0 3 0x14200 bored sosplice 70514 587 17837 0 3 0x82 sbwait sshd-session 45138 508461 78714 32767 3 0x90 nanoslp syz-executor 75017 518537 80770 32767 3 0x10 biowait syz-executor 85631 377466 3734 32767 2 0x10 syz-executor 85150 245890 77785 32767 3 0x90 nanoslp syz-executor 63130 519656 68103 32767 3 0x90 nanoslp syz-executor 59606 242060 65511 32767 3 0x90 piperd syz-executor 78714 284884 17630 0 3 0x82 wait syz-executor 80770 288646 17630 0 3 0x82 wait syz-executor 77785 479322 17630 0 3 0x82 wait syz-executor 68103 6539 17630 0 3 0x82 wait syz-executor 3734 506713 17630 0 3 0x82 wait syz-executor 65511 2880 17630 0 3 0x82 wait syz-executor 17630 245489 9593 0 3 0x82 nanoslp syz-executor 9593 248780 67326 0 3 0x10008a sigsusp ksh 67326 146763 66158 0 3 0x98 kqread sshd-session 66158 310658 17837 0 3 0x92 kqread sshd-session 7537 229731 1 0 3 0x100083 ttyin getty 17837 287385 1 0 3 0x88 kqread sshd 24067 108035 24468 73 3 0x1100090 kqread syslogd 24468 313965 1 0 3 0x100082 sbwait syslogd 58904 44008 1 0 3 0x100080 kqread resolvd 39374 449550 61318 77 3 0x100092 kqread dhcpleased 79423 485189 61318 77 3 0x100092 kqread dhcpleased 61318 202150 1 0 3 0x80 kqread dhcpleased 8273 345842 0 0 3 0x14200 bored smr 39024 361257 0 0 2 0x14200 zerothread 51400 21907 0 0 3 0x14200 aiodoned aiodoned 65338 183196 0 0 3 0x14200 syncer update 26871 261882 0 0 3 0x14200 cleaner cleaner 80696 447591 0 0 3 0x14200 reaper reaper 95695 239467 0 0 3 0x14200 pgdaemon pagedaemon 18588 26497 0 0 3 0x14200 bored viomb 47410 24269 0 0 3 0x40014200 acpi0 acpi0 3827 498316 0 0 3 0x40014200 idle1 88979 112451 0 0 3 0x14200 bored softnet7 39790 384320 0 0 3 0x14200 bored softnet6 74676 409836 0 0 3 0x14200 bored softnet5 81232 219505 0 0 3 0x14200 bored softnet4 32842 360106 0 0 3 0x14200 bored softnet3 43032 299339 0 0 3 0x14200 bored softnet2 8124 364581 0 0 3 0x14200 bored softnet1 95134 105101 0 0 3 0x14200 bored softnet0 62978 354620 0 0 3 0x14200 bored systqmp 60348 324707 0 0 3 0x14200 bored systq 41436 366864 0 0 3 0x14200 tmoslp softclockmp 39371 81593 0 0 3 0x40014200 tmoslp softclock 29493 372706 0 0 3 0x40014200 idle0 1 386194 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 (0xffffffff83967b98) #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 10493 (syz-executor) thread 0xffff80003b858d20 (188134) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838d0568) #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 (0xffffffff83967b98) #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 75017 (syz-executor) thread 0xffff80002a2e5778 (518537) exclusive rrwlock inode r = 0 (0xfffffd80778ce0e8) #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 (0xfffffd806bfc87c0) #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 10188 10952K 10968K 166960K 11272 0 pcb 17 12K 12K 166960K 17 0 rtable 171 4K 6K 166960K 268 0 pf 27 16K 16K 166960K 31 0 ifaddr 34 6K 7K 166960K 44 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 3 1K 9K 166960K 7 0 counters 64 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 34 0 iov 0 0K 14K 166960K 13 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1513 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 89 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 121K 166960K 407 0 sigio 0 0K 0K 166960K 3 0 proc 58 99K 163K 166960K 522 0 subproc 54 3K 4K 166960K 225 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 28 0 in_multi 77 5K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 420 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 214 159K 190K 166960K 4932 0 UVM aobj 8 2K 2K 166960K 9 0 pinsyscall 41 82K 110K 166960K 1424 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 9 0K 2K 166960K 27 0 temp 66 8651K 8715K 166960K 5014 0 kqueue 15 24K 32K 166960K 78 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 51 1 0 1 1 0 8 0 rtentry 176 98 0 21 5 0 5 5 0 8 0 unpcb 144 186 0 167 2 0 2 2 0 8 0 syncache 336 10 0 10 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 211 0 202 4 0 4 4 0 8 3 arp 128 11 0 2 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 445 0 433 7 3 4 7 0 8 2 ip6q 72 5 0 2 1 0 1 1 0 8 0 ip6af 40 11 0 6 1 0 1 1 0 8 0 nd6 144 18 0 6 1 0 1 1 0 8 0 kcovpl 48 25 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 442 0 88 28 1 27 28 0 8 2 art_table 40 443 0 88 5 0 5 5 0 8 0 art_node 32 98 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 pool(0xffffffff83967b80:shmpl): page inconsistency: page 0xfffffd80689de000; 29 on list, 5 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1841 0 316 96 0 96 96 0 8 0 ffsino 296 1841 0 316 118 0 118 118 0 8 0 nchpl 144 2321 0 626 63 0 63 63 0 8 0 uvmvnodes 80 2075 0 0 43 0 43 43 0 8 0 vnodes 216 2075 0 0 116 0 116 116 0 8 0 namei 1024 7466 0 7465 1 0 1 1 0 8 0 percpumem 16 49 0 2 1 0 1 1 0 8 0 kstatmem 264 24 0 4 2 0 2 2 0 8 0 scxspl 216 8398 0 8397 3 2 1 2 1 8 0 plimitpl 152 104 0 82 2 1 1 2 0 8 0 sigapl 424 653 0 598 8 0 8 8 0 8 0 knotepl 120 313 0 0 10 0 10 10 0 8 0 kqueuepl 224 194 0 181 5 2 3 5 0 8 2 pipepl 344 173 0 146 3 0 3 3 0 8 0 fdescpl 528 630 0 599 3 0 3 3 0 8 0 filepl 160 3169 0 2918 13 1 12 13 0 8 1 lockfpl 104 38 0 36 1 0 1 1 0 8 0 lockfspl 48 19 0 17 1 0 1 1 0 8 0 sessionpl 144 43 0 28 1 0 1 1 0 8 0 pgrppl 48 68 0 46 1 0 1 1 0 8 0 ucredpl 104 301 0 284 1 0 1 1 0 8 0 zombiepl 144 599 0 598 1 0 1 1 0 8 0 processpl 1248 653 0 598 7 1 6 6 0 8 0 procpl 664 1009 0 949 7 0 7 7 0 8 1 srpgc 96 1 0 1 1 1 0 1 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 752 688 0 653 10 2 8 10 0 8 3 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 262 0 0 17 0 17 17 0 8 0 bufpl 280 3388 0 116 234 0 234 234 0 8 0 anonpl 32 7462 0 0 61 0 61 61 0 246 0 amapchunkpl 152 15197 0 14775 34 5 29 29 0 158 7 amappl16 200 1964 0 1947 12 1 11 12 0 8 8 amappl15 192 15 0 15 1 1 0 1 0 8 0 amappl14 184 110 0 99 1 0 1 1 0 8 0 amappl13 176 32 0 32 1 1 0 1 0 8 0 amappl12 168 1227 0 1196 2 0 2 2 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 248 0 247 1 0 1 1 0 8 0 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 94 0 83 1 0 1 1 0 8 0 amappl6 120 173 0 169 1 0 1 1 0 8 0 amappl5 112 111 0 105 1 0 1 1 0 8 0 amappl4 104 275 0 261 1 0 1 1 0 8 0 amappl3 96 2632 0 2533 4 0 4 4 0 8 0 amappl2 88 626 0 565 2 0 2 2 0 8 0 amappl1 80 9843 0 9218 16 0 16 16 0 8 0 amappl 88 4231 0 4086 6 0 6 6 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 8 0 1 1 0 1 1 0 8 0 uaddrrnd 24 630 0 599 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 630 0 599 1 0 1 1 0 8 0 vmmpekpl 168 7243 0 7192 3 0 3 3 0 8 0 vmmpepl 168 46694 0 44779 115 3 112 115 0 357 14 vmsppl 488 629 0 599 7 1 6 6 0 8 0 rwobjpl 80 17314 0 14373 62 0 62 62 0 8 0 pdppl 4096 1268 0 1198 116 34 82 96 0 8 12 pvpl 32 17778 0 0 144 0 144 144 0 265 0 pmappl 256 629 0 599 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 297 0 38 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83860ff0) 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(ffffffff838d0360) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d0360) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003a045840,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: 0x775f5db78820, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83860ff0) 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(ffffffff838d0360) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d0360) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003a045840,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: 0x775f5db78820, 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(ffffffff833628fa) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83967b80,1,ffff80003180f8f8) at pool_do_get+0x5df pool_get(ffffffff83967b80,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003b858d20,ffff80003180fb50,80,ffff80003180faa0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003b858d20,ffff80003180fb50,ffff80003180faa0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003180fb50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003180fb50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49ca2355080, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833628fa) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83967b80,1,ffff80003180f8f8) at pool_do_get+0x5df pool_get(ffffffff83967b80,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003b858d20,ffff80003180fb50,80,ffff80003180faa0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003b858d20,ffff80003180fb50,ffff80003180faa0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003180fb50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003180fb50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49ca2355080, count: -8