panic: pool_do_get: shmpl free list modified: page 0xfffffd806b3fb000; item addr 0xfffffd806b3fbe70; offset 0x40=0x69fab4ed Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 114435 83089 0 0 0x1 0 syz-executor *214130 83089 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83446af7) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a14838,1,ffff80002a26c428) at pool_do_get+0x5df pool_get(ffffffff83a14838,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c4362c0,ffff80002a26c680,41,ffff80002a26c5d0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c4362c0,ffff80002a26c680,ffff80002a26c5d0) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80002a26c680) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a26c680) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3e44272fb0, 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 0xfffffd806b3fb000; item addr 0xfffffd806b3fbe70; offset 0x40=0x69fab4ed ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83446af7) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a14838,1,ffff80002a26c428) at pool_do_get+0x5df pool_get(ffffffff83a14838,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c4362c0,ffff80002a26c680,41,ffff80002a26c5d0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c4362c0,ffff80002a26c680,ffff80002a26c5d0) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80002a26c680) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a26c680) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3e44272fb0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a26c250 rbx 0xffff8000299bee07 rdx 0xffff8000015ef680 rcx 0xffff80003c4362c0 rax 0xffff8000299bdff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8d7924a3d015e99a r11 0xa38653adf1e43958 r12 0xffff8000299bec08 r13 0 r14 0 r15 0x1 rip 0xffffffff824c8e75 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a26c240 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=214130 pid=83089 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c4367f0,0xffffffff83a7b338 process=0xffff80002efb7040 user=0xffff80002a267000, vmspace=0xfffffd806c190208 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13857 224538 53345 0 2 0 syz-executor 83089 114435 15104 0 7 0x1 syz-executor *83089 214130 15104 0 7 0x4000000 syz-executor 25965 484183 8484 0 2 0 syz-executor 93175 319787 92124 -1 3 0x90 nanoslp syz-executor 93175 236405 92124 -1 3 0x4000090 msgwait syz-executor 93175 45076 92124 -1 3 0x4000090 fsleep syz-executor 78545 476358 79847 0 3 0x80 nanoslp syz-executor 78545 453151 79847 0 3 0x4000080 kqsel syz-executor 78545 22382 79847 0 3 0x4000080 fsleep syz-executor 78545 16556 79847 0 3 0x4000080 fsleep syz-executor 43215 354237 57042 0 3 0x90 nanoslp syz-executor 43215 415632 57042 0 3 0x4000098 kqread syz-executor 43215 185489 57042 0 3 0x4000090 fsleep syz-executor 20215 408776 78098 0 3 0x80 nanoslp syz-executor 20215 48508 78098 0 3 0x4000080 fifow syz-executor 20215 369070 78098 0 3 0x4000080 fsleep syz-executor 92124 245793 58313 0 3 0x82 nanoslp syz-executor 15104 58161 58313 0 3 0x82 nanoslp syz-executor 78098 198431 58313 0 3 0x82 nanoslp syz-executor 79847 53908 58313 0 3 0x82 nanoslp syz-executor 8484 153418 58313 0 3 0x82 nanoslp syz-executor 62431 337438 58313 0 2 0x2 syz-executor 53345 277857 58313 0 3 0x82 nanoslp syz-executor 57042 132384 58313 0 3 0x82 nanoslp syz-executor 58313 274791 1 0 3 0x82 kqread syz-executor 56863 146282 13454 0 3 0x98 kqread sshd-session 13454 183721 5695 0 3 0x92 kqread sshd-session 98340 455728 1 0 3 0x100083 ttyin getty 5695 400362 1 0 3 0x88 kqread sshd 98146 240268 47524 74 3 0x1100092 bpf pflogd 47524 445622 1 0 3 0x80 sbwait pflogd 75005 154145 92270 73 3 0x1100090 kqread syslogd 92270 282261 1 0 3 0x100082 sbwait syslogd 10928 89347 1 0 3 0x100080 kqread resolvd 62231 21891 49918 77 3 0x100092 kqread dhcpleased 55870 102177 49918 77 3 0x100092 kqread dhcpleased 49918 397811 1 0 3 0x80 kqread dhcpleased 24722 45713 0 0 3 0x14200 bored smr 96636 352717 0 0 2 0x14200 zerothread 26949 410799 0 0 3 0x14200 aiodoned aiodoned 49440 81732 0 0 3 0x14200 syncer update 52664 295237 0 0 3 0x14200 cleaner cleaner 38853 31130 0 0 3 0x14200 reaper reaper 71573 82469 0 0 3 0x14200 pgdaemon pagedaemon 23842 20313 0 0 3 0x14200 bored viomb 74917 233111 0 0 3 0x40014200 acpi0 acpi0 18892 407133 0 0 3 0x40014200 idle1 38194 455215 0 0 3 0x14200 bored softnet1 91714 434707 0 0 3 0x14200 bored softnet0 22359 105765 0 0 3 0x14200 bored systqmp 65865 518380 0 0 3 0x14200 bored systq 96820 147931 0 0 3 0x14200 tmoslp softclockmp 2319 356374 0 0 3 0x40014200 tmoslp softclock 75010 446167 0 0 3 0x40014200 idle0 1 285076 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 (0xffffffff83a14850) #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+0x4b4 sys/kern/kern_lock.c:487 #2 pool_get+0x124 sys/kern/subr_pool.c:585 #3 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #4 sys_shmget+0x195 sys/kern/sysv_shm.c:484 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 83089 (syz-executor) thread 0xffff80003c4362c0 (214130) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a8dc40) #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:783 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff83a14850) #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+0x4b4 sys/kern/kern_lock.c:487 #2 pool_get+0x124 sys/kern/subr_pool.c:585 #3 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #4 sys_shmget+0x195 sys/kern/sysv_shm.c:484 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11058 12085K 12215K 166960K 12161 0 pcb 17 12K 12K 166960K 21 0 rtable 237 6K 7K 166960K 365 0 pf 34 17K 21K 166960K 48 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 3 1K 9K 166960K 8 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1490 0 iov 0 0K 1K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1301 82K 82K 166960K 1375 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 167 0 sigio 0 0K 0K 166960K 33 0 proc 71 115K 164K 166960K 556 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 2 0K 0K 166960K 7 0 in_multi 100 7K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 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 221 142K 161K 166960K 3384 0 UVM aobj 4 2K 2K 166960K 5 0 pinsyscall 41 82K 106K 166960K 1334 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 36 9074K 9140K 166960K 4302 0 kqueue 14 22K 26K 166960K 31 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 114 0 4 5 0 5 5 0 8 0 unpcb 144 312 0 293 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 14 0 8 1 0 1 1 0 8 0 arp 136 19 0 1 1 0 1 1 0 8 0 inpcb 328 86 0 74 2 0 2 2 0 8 0 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 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 21 0 0 1 0 1 1 0 8 0 pfstkey 128 21 0 0 1 0 1 1 0 8 0 pfstate 448 21 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 456 0 2 29 0 29 29 0 8 0 art_table 40 457 0 2 5 0 5 5 0 8 0 art_node 32 114 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 pool(0xffffffff83a14838:shmpl): page inconsistency: page 0xfffffd806b3fb000; 33 on list, 1 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1606 0 134 93 0 93 93 0 8 0 ffsino 296 1606 0 134 114 0 114 114 0 8 0 nchpl 144 1855 0 143 64 0 64 64 0 8 0 vnodes 216 1705 0 0 95 0 95 95 0 8 0 namei 1024 5694 0 5694 1 0 1 1 0 8 1 percpumem 16 50 0 0 1 0 1 1 0 8 0 kstatmem 264 27 0 0 2 0 2 2 0 8 0 scxspl 216 6144 0 6144 4 2 2 3 1 8 2 plimitpl 152 30 0 14 1 0 1 1 0 8 0 sigapl 424 488 0 442 7 0 7 7 0 8 1 knotepl 120 88 0 0 3 0 3 3 0 8 0 kqueuepl 224 30 0 18 1 0 1 1 0 8 0 pipepl 344 130 0 103 3 0 3 3 0 8 0 fdescpl 528 472 0 442 3 0 3 3 0 8 0 filepl 160 1993 0 1772 16 0 16 16 0 8 6 lockfpl 104 14 0 10 1 0 1 1 0 8 0 lockfspl 48 9 0 5 1 0 1 1 0 8 0 sessionpl 144 25 0 15 1 0 1 1 0 8 0 pgrppl 48 33 0 15 1 0 1 1 0 8 0 ucredpl 104 98 0 82 1 0 1 1 0 8 0 zombiepl 144 442 0 442 1 0 1 1 0 8 1 processpl 1232 488 0 442 5 0 5 5 0 8 0 procpl 664 549 0 493 6 0 6 6 0 8 0 sockpl 752 439 0 405 18 0 18 18 0 8 14 mcl64k 65536 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 mcl2k 2048 15 0 0 2 0 2 2 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 141 0 0 9 0 9 9 0 8 0 bufpl 280 2315 0 105 158 0 158 158 0 8 0 anonpl 32 3861 0 0 32 0 32 32 0 246 0 amapchunkpl 152 9349 0 8893 21 0 21 21 0 158 1 amappl16 200 1786 0 1769 5 0 5 5 0 8 3 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 439 0 439 1 0 1 1 0 8 1 amappl13 176 164 0 151 1 0 1 1 0 8 0 amappl12 168 727 0 698 2 0 2 2 0 8 0 amappl11 160 29 0 29 1 0 1 1 0 8 1 amappl10 152 111 0 97 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 0 1 1 0 8 1 amappl8 136 108 0 106 1 0 1 1 0 8 0 amappl7 128 147 0 134 1 0 1 1 0 8 0 amappl6 120 159 0 158 1 0 1 1 0 8 0 amappl5 112 96 0 86 1 0 1 1 0 8 0 amappl4 104 307 0 285 1 0 1 1 0 8 0 amappl3 96 1652 0 1546 4 0 4 4 0 8 1 amappl2 88 529 0 469 2 0 2 2 0 8 0 amappl1 80 9521 0 8926 15 0 15 15 0 8 1 amappl 88 2646 0 2493 5 1 4 5 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 0 8 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 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 472 0 442 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 472 0 442 1 0 1 1 0 8 0 vmmpekpl 168 5617 0 5583 2 0 2 2 0 8 0 vmmpepl 168 38262 0 36412 86 0 86 86 0 357 2 vmsppl 488 471 0 442 5 0 5 5 0 8 0 rwobjpl 80 14087 0 13082 24 0 24 24 0 8 1 pdppl 4096 951 0 884 101 16 85 85 0 8 18 pvpl 32 11370 0 0 92 0 92 92 0 265 0 pmappl 256 471 0 442 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 270 0 18 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8392dff0) 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(ffffffff83a8d440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a8d440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a8d440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a8d440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrstruct(ffff80003c436d20,ffffffff834d84cc,ffff80003c3d6560,10) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_clock_gettime(ffff80003c436d20,ffff80003c3d6690,ffff80003c3d65e0) at sys_clock_gettime+0x15f sys/kern/kern_time.c:179 syscall(ffff80003c3d6690) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3d6690) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cb4e899a110, count: 3 ddb{0}> trace x86_ipi_db(ffffffff8392dff0) 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(ffffffff83a8d440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a8d440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a8d440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a8d440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrstruct(ffff80003c436d20,ffffffff834d84cc,ffff80003c3d6560,10) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_clock_gettime(ffff80003c436d20,ffff80003c3d6690,ffff80003c3d65e0) at sys_clock_gettime+0x15f sys/kern/kern_time.c:179 syscall(ffff80003c3d6690) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3d6690) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cb4e899a110, count: -12 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(ffffffff83446af7) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a14838,1,ffff80002a26c428) at pool_do_get+0x5df pool_get(ffffffff83a14838,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c4362c0,ffff80002a26c680,41,ffff80002a26c5d0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c4362c0,ffff80002a26c680,ffff80002a26c5d0) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80002a26c680) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a26c680) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3e44272fb0, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83446af7) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a14838,1,ffff80002a26c428) at pool_do_get+0x5df pool_get(ffffffff83a14838,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c4362c0,ffff80002a26c680,41,ffff80002a26c5d0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c4362c0,ffff80002a26c680,ffff80002a26c5d0) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80002a26c680) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a26c680) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3e44272fb0, count: -8