panic: pool_do_get: shmpl free list modified: page 0xfffffd806c399000; item addr 0xfffffd806c399700; offset 0x40=0x686e76fc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *192995 37392 32767 0x10 0x4000000 1K syz-executor 359308 78187 32767 0x1010 0x4080000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d30c5) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838f4368,1,ffff80003c4530d8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838f4368,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffeace8,ffff80003c453330,1a3,ffff80003c453280) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffeace8,ffff80003c453330,ffff80003c453280) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c453330) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c453330) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x849511760d0, 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 0xfffffd806c399000; item addr 0xfffffd806c399700; offset 0x40=0x686e76fc ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d30c5) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838f4368,1,ffff80003c4530d8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838f4368,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffeace8,ffff80003c453330,1a3,ffff80003c453280) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffeace8,ffff80003c453330,ffff80003c453280) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c453330) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c453330) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x849511760d0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c452f10 rbx 0xffff8000299dedd7 rdx 0xffff80000142e780 rcx 0xffff8000fffeace8 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x530e5a41a7de75f r11 0x98e9139c1c9f961f r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff82987b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c452f00 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=192995 pid=37392 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffea018,0xffffffff839c6200 process=0xffff80003c40ba40 user=0xffff80003c44e000, vmspace=0xfffffd806b8a1210 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67553 221924 62044 0 2 0x2 syz-executor 37392 387044 39966 32767 2 0x10 syz-executor *37392 192995 39966 32767 7 0x4000010 syz-executor 78806 325780 91785 32767 2 0x10 syz-executor 78806 437733 91785 32767 3 0x4000090 fsleep syz-executor 78187 98960 35941 32767 3 0x3010 suspend syz-executor 78187 359308 35941 32767 7 0x4081010 syz-executor 78187 330106 35941 32767 2 0x4081010 syz-executor 78187 17464 35941 32767 2 0x4081010 syz-executor 78187 152459 35941 32767 2 0x4081010 syz-executor 4543 484960 24432 32767 2 0x10 syz-executor 4543 448408 24432 32767 3 0x4000090 fsleep syz-executor 54886 278676 81106 32767 2 0x10 syz-executor 54886 18612 81106 32767 3 0x4000090 lockf syz-executor 54886 28092 81106 32767 3 0x4000090 fsleep syz-executor 81546 69011 31777 32767 2 0x10 syz-executor 81546 10827 31777 32767 3 0x4000090 fsleep syz-executor 81546 517883 31777 32767 3 0x4000090 lockf syz-executor 88177 119113 0 0 3 0x14200 bored sosplice 91785 449655 5073 32767 3 0x90 nanoslp syz-executor 81106 338971 5816 32767 2 0xc90 syz-executor 35941 83689 32538 32767 2 0xc90 syz-executor 39966 411761 23966 32767 3 0x90 nanoslp syz-executor 1396 404378 51329 32767 2 0x10000c90 syz-executor 24432 197960 19574 32767 3 0x90 nanoslp syz-executor 31777 230326 22646 32767 2 0xc90 syz-executor 19574 343849 62044 0 3 0x82 wait syz-executor 51329 18233 62044 0 3 0x82 wait syz-executor 23966 48576 62044 0 3 0x82 wait syz-executor 22646 354397 62044 0 3 0x82 wait syz-executor 32538 398287 62044 0 3 0x82 wait syz-executor 5073 475913 62044 0 3 0x82 wait syz-executor 5816 214251 62044 0 3 0x82 wait syz-executor 62044 292270 14119 0 3 0x82 kqread syz-executor 14119 296912 81454 0 3 0x10008a sigsusp ksh 81454 291464 7554 0 3 0x98 kqread sshd-session 7554 52253 13415 0 3 0x92 kqread sshd-session 5425 91109 1 0 3 0x100083 ttyin getty 13415 32991 1 0 3 0x88 kqread sshd 72133 72423 99160 73 3 0x1100090 kqread syslogd 99160 154133 1 0 3 0x100082 sbwait syslogd 72799 240732 1 0 3 0x100080 kqread resolvd 8334 497312 91016 77 3 0x100092 kqread dhcpleased 17304 256006 91016 77 3 0x100092 kqread dhcpleased 91016 77813 1 0 3 0x80 kqread dhcpleased 68049 52278 0 0 3 0x14200 bored smr 49894 418922 0 0 2 0x14200 zerothread 19165 374650 0 0 3 0x14200 aiodoned aiodoned 61280 252763 0 0 3 0x14200 syncer update 45235 433629 0 0 3 0x14200 cleaner cleaner 41338 399861 0 0 3 0x14200 reaper reaper 15119 464915 0 0 3 0x14200 pgdaemon pagedaemon 81889 287617 0 0 3 0x14200 bored viomb 40503 503129 0 0 3 0x40014200 acpi0 acpi0 8913 138959 0 0 3 0x40014200 idle1 68172 12300 0 0 3 0x14200 bored softnet3 77796 129752 0 0 3 0x14200 bored softnet2 3244 410654 0 0 3 0x14200 bored softnet1 62258 260626 0 0 3 0x14200 bored softnet0 88836 119150 0 0 3 0x14200 bored systqmp 75446 441933 0 0 3 0x14200 bored systq 74643 110510 0 0 3 0x14200 tmoslp softclockmp 6968 497097 0 0 2 0x40014200 softclock 76668 268025 0 0 3 0x40014200 idle0 1 494243 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 (0xffffffff838f4380) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb 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+0x10b sys/kern/subr_pool.c:578 #4 shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 #5 sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 #7 Xsyscall+0x128 Process 37392 (syz-executor) thread 0xffff8000fffeace8 (192995) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838f1ca8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:742 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff838f4380) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb 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+0x10b sys/kern/subr_pool.c:578 #4 shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 #5 sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10190 10953K 10967K 166960K 11271 0 pcb 17 12K 12K 166960K 17 0 rtable 221 6K 7K 166960K 364 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 66 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 33 0 iov 0 0K 12K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1446 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 43 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 23 85K 121K 166960K 297 0 sigio 0 0K 0K 166960K 6 0 proc 58 79K 127K 166960K 495 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 43 0 in_multi 89 6K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 5 0 mrt 2 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 367 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 242 161K 186K 166960K 4191 0 UVM aobj 11 3K 4K 166960K 13 0 pinsyscall 44 88K 111K 166960K 1312 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 10 0K 2K 166960K 27 0 temp 41 8679K 8744K 166960K 4319 0 kqueue 16 24K 30K 166960K 52 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 56 0 53 1 0 1 1 0 8 0 rtentry 176 114 0 12 6 0 6 6 0 8 0 unpcb 144 142 0 125 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 4 0 4 1 0 1 1 0 8 1 tcpcb 736 146 0 140 7 0 7 7 0 8 6 arp 128 18 0 2 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 299 0 282 7 0 7 7 0 8 5 nd6 144 27 0 3 1 0 1 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 468 0 44 30 0 30 30 0 8 0 art_table 32 469 0 44 4 0 4 4 0 8 0 art_node 16 113 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semapl 112 40 0 32 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 pool(0xffffffff838f4368:shmpl): page inconsistency: page 0xfffffd806c399000; 26 on list, 8 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1812 0 302 95 0 95 95 0 8 0 ffsino 288 1812 0 302 108 0 108 108 0 8 0 nchpl 144 2205 0 521 63 0 63 63 0 8 0 uvmvnodes 80 1920 0 0 40 0 40 40 0 8 0 vnodes 216 1920 0 0 107 0 107 107 0 8 0 namei 1024 6796 0 6796 2 0 2 2 0 8 2 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 6681 0 6681 3 1 2 2 1 8 2 plimitpl 152 103 0 79 2 0 2 2 0 8 0 sigapl 424 567 0 512 7 0 7 7 0 8 0 knotepl 120 305 0 0 10 0 10 10 0 8 0 kqueuepl 224 66 0 51 1 0 1 1 0 8 0 pipepl 336 116 0 89 3 0 3 3 0 8 0 fdescpl 520 548 0 513 3 0 3 3 0 8 0 filepl 160 2556 0 2323 16 0 16 16 0 8 6 lockfpl 104 46 0 41 1 0 1 1 0 8 0 lockfspl 48 16 0 13 1 0 1 1 0 8 0 sessionpl 144 27 0 12 1 0 1 1 0 8 0 pgrppl 48 45 0 21 1 0 1 1 0 8 0 ucredpl 104 477 0 459 1 0 1 1 0 8 0 zombiepl 144 513 0 512 1 0 1 1 0 8 0 processpl 1240 567 0 512 5 0 5 5 0 8 0 procpl 656 815 0 749 7 0 7 7 0 8 0 sosppl 168 6 0 6 1 0 1 1 0 8 1 sockpl 728 498 0 460 10 0 10 10 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 38 0 0 5 0 5 5 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 243 0 0 16 0 16 16 0 8 0 bufpl 280 2415 0 116 165 0 165 165 0 8 0 anonpl 32 6485 0 0 53 0 53 53 0 246 0 amapchunkpl 152 12804 0 12159 30 0 30 30 0 158 4 amappl16 200 2064 0 2012 5 2 3 5 0 8 0 amappl15 192 20 0 20 1 1 0 1 0 8 0 amappl14 184 106 0 96 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1161 0 1126 2 0 2 2 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 25 0 24 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 170 0 167 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 288 0 274 1 0 1 1 0 8 0 amappl3 96 2133 0 2012 4 0 4 4 0 8 0 amappl2 88 636 0 579 2 0 2 2 0 8 0 amappl1 80 9259 0 8701 14 0 14 14 0 8 0 amappl 88 3532 0 3355 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 548 0 513 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 548 0 513 1 0 1 1 0 8 0 vmmpekpl 168 6354 0 6316 3 0 3 3 0 8 0 vmmpepl 168 41701 0 39669 99 0 99 99 0 357 2 vmsppl 480 547 0 513 7 1 6 6 0 8 0 rwobjpl 72 16191 0 13407 51 0 51 51 0 8 0 pdppl 4096 1104 0 1026 106 22 84 96 0 8 6 pvpl 32 14435 0 0 117 0 117 117 0 265 0 pmappl 256 547 0 513 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 401 0 25 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8386eff0) 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(ffffffff838f1aa0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f1aa0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 sys_kevent(ffff8000fffe9730,ffff80003c423f10,ffff80003c423e60) at sys_kevent+0x405 sys/kern/kern_event.c:1286 syscall(ffff80003c423f10) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c423f10) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfbd2aaba840, count: 4 ddb{0}> trace x86_ipi_db(ffffffff8386eff0) 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(ffffffff838f1aa0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f1aa0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 sys_kevent(ffff8000fffe9730,ffff80003c423f10,ffff80003c423e60) at sys_kevent+0x405 sys/kern/kern_event.c:1286 syscall(ffff80003c423f10) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c423f10) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfbd2aaba840, count: -11 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(ffffffff833d30c5) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838f4368,1,ffff80003c4530d8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838f4368,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffeace8,ffff80003c453330,1a3,ffff80003c453280) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffeace8,ffff80003c453330,ffff80003c453280) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c453330) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c453330) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x849511760d0, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d30c5) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838f4368,1,ffff80003c4530d8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838f4368,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffeace8,ffff80003c453330,1a3,ffff80003c453280) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffeace8,ffff80003c453330,ffff80003c453280) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c453330) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c453330) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x849511760d0, count: -8