panic: pool_do_get: shmpl free list modified: page 0xfffffd8066b61000; item addr 0xfffffd8066b615b0; offset 0x40=0x691b897c Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 423467 24787 32767 0x10 0 0 syz-executor *394968 24787 32767 0x10 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8339ab14) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8397d6a0,1,ffff80003c423348) at pool_do_get+0x5df pool_get(ffffffff8397d6a0,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffee018,ffff80003c4235a0,0,ffff80003c4234f0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffee018,ffff80003c4235a0,ffff80003c4234f0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4235a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4235a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6bffb953360, 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 0xfffffd8066b61000; item addr 0xfffffd8066b615b0; offset 0x40=0x691b897c ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8339ab14) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8397d6a0,1,ffff80003c423348) at pool_do_get+0x5df pool_get(ffffffff8397d6a0,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffee018,ffff80003c4235a0,0,ffff80003c4234f0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffee018,ffff80003c4235a0,ffff80003c4234f0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4235a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4235a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6bffb953360, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c423170 rbx 0xffff8000299eee07 rdx 0xffff80000146cbc0 rcx 0xffff8000fffee018 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x74720fbc9603f508 r11 0xcc976a0a4fbfcb82 r12 0xffff8000299eec08 r13 0 r14 0 r15 0x1 rip 0xffffffff810542e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c423160 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=394968 pid=24787 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=0xffff800032ff5ca8,0xffffffff83998fd8 process=0xffff800030fe49c0 user=0xffff80003c41e000, vmspace=0xfffffd806cd7e5d8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81164 164814 78722 32767 2 0x10 syz-executor 51968 189934 18196 32767 2 0x10 syz-executor 51968 493457 18196 32767 3 0x4000090 fsleep syz-executor 51968 259407 18196 32767 3 0x4000090 fsleep syz-executor 24787 423467 66263 32767 7 0x10 syz-executor *24787 394968 66263 32767 7 0x4000010 syz-executor 59188 157700 47983 32767 3 0x10 biowait syz-executor 68613 89393 69137 32767 3 0x90 nanoslp syz-executor 78722 268658 62612 32767 3 0x90 nanoslp syz-executor 94357 404967 23443 32767 2 0x10000010 syz-executor 66263 187169 13498 32767 3 0x90 nanoslp syz-executor 10370 350600 6734 32767 3 0x90 nanoslp syz-executor 18196 488964 40506 32767 3 0x90 nanoslp syz-executor 68155 1482 4134 32767 3 0x90 wait syz-executor 69137 445099 18071 0 3 0x82 wait syz-executor 47983 435489 18071 0 3 0x82 wait syz-executor 62612 62100 18071 0 3 0x82 wait syz-executor 23443 375832 18071 0 3 0x82 wait syz-executor 13498 31214 18071 0 3 0x82 wait syz-executor 6734 239688 18071 0 3 0x82 wait syz-executor 4134 65351 18071 0 3 0x82 wait syz-executor 40506 374047 18071 0 3 0x82 wait syz-executor 18071 314755 77400 0 3 0x82 kqread syz-executor 77400 80903 58132 0 3 0x10008a sigsusp ksh 58132 180078 40873 0 3 0x98 kqread sshd-session 40873 475991 72753 0 3 0x92 kqread sshd-session 35362 176769 1 0 3 0x100083 ttyin getty 72753 1672 1 0 3 0x88 kqread sshd 37636 56347 2036 73 3 0x1100090 kqread syslogd 2036 115297 1 0 3 0x100082 sbwait syslogd 12160 171807 1 0 3 0x100080 kqread resolvd 97865 205478 88851 77 3 0x100092 kqread dhcpleased 56777 137062 88851 77 3 0x100092 kqread dhcpleased 88851 65914 1 0 3 0x80 kqread dhcpleased 19245 337526 0 0 3 0x14200 bored smr 59977 141038 0 0 2 0x14200 zerothread 8850 486581 0 0 3 0x14200 aiodoned aiodoned 31992 237273 0 0 3 0x14200 syncer update 63449 469836 0 0 3 0x14200 cleaner cleaner 74594 296077 0 0 3 0x14200 reaper reaper 14353 96956 0 0 3 0x14200 pgdaemon pagedaemon 59974 227053 0 0 3 0x14200 bored viomb 93286 354509 0 0 3 0x40014200 acpi0 acpi0 16874 311270 0 0 3 0x40014200 idle1 29848 278171 0 0 3 0x14200 bored softnet1 63036 170252 0 0 3 0x14200 bored softnet0 75666 41392 0 0 3 0x14200 bored systqmp 49972 167567 0 0 3 0x14200 bored systq 71192 195334 0 0 3 0x14200 tmoslp softclockmp 76616 70845 0 0 3 0x40014200 tmoslp softclock 23576 225153 0 0 3 0x40014200 idle0 1 225618 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 (0xffffffff8397d6b8) #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:581 #3 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #4 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #6 Xsyscall+0x128 Process 24787 (syz-executor) thread 0xffff8000fffee018 (394968) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83904d48) #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:765 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff8397d6b8) #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:581 #3 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #4 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #6 Xsyscall+0x128 Process 59188 (syz-executor) thread 0xffff800032ff4a80 (157700) exclusive rrwlock inode r = 0 (0xfffffd8066bda580) #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+0xbd 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:765 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d6d4448) #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+0xbd 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:765 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10191 10958K 10973K 166960K 11282 0 pcb 17 12K 12K 166960K 17 0 rtable 243 6K 7K 166960K 358 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 3 1K 9K 166960K 7 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 35 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1368 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 15 2K 3K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 89K 113K 166960K 302 0 sigio 0 0K 0K 166960K 5 0 proc 58 99K 131K 166960K 495 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 37 0 in_multi 99 7K 7K 166960K 112 0 ether_multi 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 401 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 252 184K 199K 166960K 4534 0 UVM aobj 14 4K 4K 166960K 15 0 pinsyscall 45 90K 108K 166960K 1348 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 9 0 NDP 11 0K 2K 166960K 27 0 temp 41 8659K 8723K 166960K 4433 0 kqueue 13 20K 28K 166960K 56 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 41 0 38 1 0 1 1 0 8 0 rtentry 176 114 0 1 6 0 6 6 0 8 0 unpcb 144 165 0 150 2 0 2 2 0 8 1 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 89 0 85 4 0 4 4 0 8 3 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 249 0 241 4 0 4 4 0 8 3 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 152 27 0 0 2 0 2 2 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 256 471 0 0 30 0 30 30 0 8 0 art_table 40 472 0 0 5 0 5 5 0 8 0 art_node 32 114 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 12 0 1 1 0 1 1 0 8 0 pool(0xffffffff8397d6a0:shmpl): page inconsistency: page 0xfffffd8066b61000; 23 on list, 11 missing, 35 items per page dirhash 1024 21 0 2 3 0 3 3 0 8 0 dino2pl 256 1789 0 278 95 0 95 95 0 8 0 ffsino 296 1789 0 278 117 0 117 117 0 8 0 nchpl 144 2227 0 542 63 0 63 63 0 8 0 vnodes 216 1870 0 0 104 0 104 104 0 8 0 namei 1024 6609 0 6608 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 7741 0 7740 10 2 8 8 1 8 7 plimitpl 152 89 0 65 2 0 2 2 0 8 1 sigapl 424 584 0 531 7 0 7 7 0 8 0 knotepl 120 317 0 0 10 0 10 10 0 8 0 kqueuepl 224 71 0 62 1 0 1 1 0 8 0 pipepl 344 123 0 96 3 0 3 3 0 8 0 fdescpl 528 568 0 532 3 0 3 3 0 8 0 filepl 160 2320 0 2109 11 0 11 11 0 8 1 lockfpl 104 36 0 34 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 22 0 6 1 0 1 1 0 8 0 pgrppl 48 34 0 10 1 0 1 1 0 8 0 ucredpl 104 264 0 245 1 0 1 1 0 8 0 zombiepl 144 535 0 531 1 0 1 1 0 8 0 processpl 1232 584 0 531 5 0 5 5 0 8 0 procpl 664 873 0 817 7 0 7 7 0 8 1 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 752 459 0 433 7 0 7 7 0 8 4 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 287 0 0 18 0 18 18 0 8 0 bufpl 280 2570 0 118 176 0 176 176 0 8 0 anonpl 32 5565 0 0 46 1 45 45 0 246 0 amapchunkpl 152 13794 0 13274 31 0 31 31 0 158 5 amappl16 200 2148 0 2126 5 2 3 5 0 8 1 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 26 0 26 2 1 1 1 0 8 1 amappl13 176 413 0 412 1 0 1 1 0 8 0 amappl12 168 898 0 854 3 0 3 3 0 8 0 amappl11 160 16 0 16 1 1 0 1 0 8 0 amappl10 152 41 0 31 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 25 0 24 1 0 1 1 0 8 0 amappl7 128 76 0 75 1 0 1 1 0 8 0 amappl6 120 280 0 269 1 0 1 1 0 8 0 amappl5 112 80 0 72 1 0 1 1 0 8 0 amappl4 104 379 0 357 1 0 1 1 0 8 0 amappl3 96 2166 0 2070 3 0 3 3 0 8 0 amappl2 88 686 0 609 2 0 2 2 0 8 0 amappl1 80 9448 0 8878 14 0 14 14 0 8 0 amappl 88 3818 0 3640 5 0 5 5 0 92 0 uvmvnodes 80 100 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 14 0 1 1 0 1 1 0 8 0 uaddrrnd 24 568 0 532 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 568 0 532 1 0 1 1 0 8 0 vmmpekpl 168 6232 0 6203 2 0 2 2 0 8 0 vmmpepl 168 43733 0 41730 99 0 99 99 0 357 4 vmsppl 488 567 0 532 7 1 6 6 0 8 0 rwobjpl 80 14955 0 14010 22 0 22 22 0 8 0 pdppl 4096 1143 0 1064 105 20 85 93 0 8 6 pvpl 32 12515 0 0 101 0 101 101 0 265 0 pmappl 256 567 0 532 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 285 0 23 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83831ff0) 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(ffffffff83904b40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83904b40) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002ebd5580,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x736347ffeb80, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83831ff0) 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(ffffffff83904b40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83904b40) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002ebd5580,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x736347ffeb80, 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(ffffffff8339ab14) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8397d6a0,1,ffff80003c423348) at pool_do_get+0x5df pool_get(ffffffff8397d6a0,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffee018,ffff80003c4235a0,0,ffff80003c4234f0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffee018,ffff80003c4235a0,ffff80003c4234f0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4235a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4235a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6bffb953360, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8339ab14) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8397d6a0,1,ffff80003c423348) at pool_do_get+0x5df pool_get(ffffffff8397d6a0,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffee018,ffff80003c4235a0,0,ffff80003c4234f0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffee018,ffff80003c4235a0,ffff80003c4234f0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c4235a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4235a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6bffb953360, count: -8