panic: pool_do_get: shmpl free list modified: page 0xfffffd805e003000; item addr 0xfffffd805e0032b0; offset 0x40=0x67a3e96b Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 70223 80892 32767 0x10 0 0 syz-executor * 19351 80892 32767 0x10 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830d2f4c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835775c0,1,ffff80003c5a2ec8) at pool_do_get+0x5da pool_get(ffffffff835775c0,1) at pool_get+0x149 shmget_allocate_segment(ffff8000ffff5468,ffff80003c5a3120,100,ffff80003c5a3070) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff5468,ffff80003c5a3120,ffff80003c5a3070) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c5a3120) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a3120) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfca3fd33ed0, 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 0xfffffd805e003000; item addr 0xfffffd805e0032b0; offset 0x40=0x67a3e96b ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830d2f4c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835775c0,1,ffff80003c5a2ec8) at pool_do_get+0x5da pool_get(ffffffff835775c0,1) at pool_get+0x149 shmget_allocate_segment(ffff8000ffff5468,ffff80003c5a3120,100,ffff80003c5a3070) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff5468,ffff80003c5a3120,ffff80003c5a3070) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c5a3120) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a3120) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfca3fd33ed0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c5a2d00 rbx 0xffff800029b5cdc7 rdx 0xffff8000012824c0 rcx 0xffff8000ffff5468 rax 0xffff800029b5bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3d42c1635d21f26a r11 0x4855fcb3696a23aa r12 0xffff800029b5cbc8 r13 0 r14 0 r15 0x1 rip 0xffffffff8104caf5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c5a2cf0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=19351 pid=80892 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=77, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff4a48,0xffff8000ffff4f68 process=0xffff80003c5914a0 user=0xffff80003c59e000, vmspace=0xfffffd806c0ec748 estcpu=27, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83392 48742 79697 0 2 0 syz-executor 80892 70223 32062 32767 7 0x10 syz-executor *80892 19351 32062 32767 7 0x4000010 syz-executor 67891 410287 73324 32767 2 0x10 syz-executor 67891 489253 73324 32767 3 0x4000090 fsleep syz-executor 79697 78988 50156 0 3 0x82 wait syz-executor 10510 58774 68763 32767 3 0x90 nanoslp syz-executor 10510 86909 68763 32767 3 0x4000090 ttyopn syz-executor 10510 335663 68763 32767 3 0x4000090 fsleep syz-executor 43994 457777 0 0 3 0x14200 bored sosplice 72128 182834 92912 0 3 0x100082 sbwait arp 92912 503881 88394 0 3 0x10008a sigsusp sh 88394 1289 35456 0 3 0x80 wait syz-executor 68763 268205 35329 32767 3 0x90 nanoslp syz-executor 68243 358950 13202 32767 3 0x90 piperd syz-executor 32062 500426 79865 32767 3 0x90 nanoslp syz-executor 73324 62790 83157 32767 3 0x90 nanoslp syz-executor 8071 173742 82786 32767 3 0x10 biowait syz-executor 35456 291662 50156 0 3 0x82 wait syz-executor 79865 73957 50156 0 3 0x82 wait syz-executor 13202 485093 50156 0 3 0x82 wait syz-executor 83157 173523 50156 0 3 0x82 wait syz-executor 82786 393951 50156 0 3 0x82 wait syz-executor 35329 360592 50156 0 3 0x82 wait syz-executor 50156 346006 14110 0 3 0x82 nanoslp syz-executor 14110 115537 68063 0 3 0x10008a sigsusp ksh 68063 275726 635 0 3 0x98 kqread sshd-session 635 201612 29549 0 3 0x92 kqread sshd-session 54749 407234 1 0 3 0x100083 ttyin getty 29549 37437 1 0 3 0x88 kqread sshd 25808 450596 53990 73 3 0x1100090 kqread syslogd 53990 201704 1 0 3 0x100082 sbwait syslogd 87604 253516 1 0 3 0x100080 kqread resolvd 69264 369580 11821 77 3 0x100092 kqread dhcpleased 36061 299299 11821 77 3 0x100092 kqread dhcpleased 11821 465088 1 0 3 0x80 kqread dhcpleased 60785 101684 0 0 3 0x14200 bored smr 59373 254309 0 0 2 0x14200 zerothread 80390 461012 0 0 3 0x14200 aiodoned aiodoned 35654 389093 0 0 3 0x14200 syncer update 14904 399981 0 0 3 0x14200 cleaner cleaner 34260 281069 0 0 3 0x14200 reaper reaper 47763 258620 0 0 3 0x14200 pgdaemon pagedaemon 56839 458258 0 0 3 0x14200 bored viomb 19269 45736 0 0 3 0x40014200 acpi0 acpi0 32441 282972 0 0 3 0x40014200 idle1 92500 58579 0 0 3 0x14200 bored softnet3 77201 308914 0 0 3 0x14200 bored softnet2 88679 110484 0 0 3 0x14200 bored softnet1 38249 327303 0 0 3 0x14200 bored softnet0 85876 35387 0 0 3 0x14200 bored systqmp 67364 511137 0 0 3 0x14200 bored systq 86059 190461 0 0 3 0x14200 tmoslp softclockmp 69270 411247 0 0 3 0x40014200 tmoslp softclock 27337 489691 0 0 3 0x40014200 idle0 1 445818 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 (0xffffffff835775d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_get+0x10b sys/kern/subr_pool.c:583 #4 shmget_allocate_segment+0x1a7 #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:577 #7 Xsyscall+0x128 Process 80892 (syz-executor) thread 0xffff8000ffff5468 (19351) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83679a90) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff835775d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_get+0x10b sys/kern/subr_pool.c:583 #4 shmget_allocate_segment+0x1a7 #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:577 #7 Xsyscall+0x128 Process 8071 (syz-executor) thread 0xffff8000ffff82a0 (173742) exclusive rrwlock inode r = 0 (0xfffffd80637c6ca8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3102 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c706bc0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3087 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 10953K 10966K 166960K 11294 0 pcb 17 14K 16K 166960K 19 0 rtable 176 5K 6K 166960K 391 0 pf 27 16K 16K 166960K 31 0 ifaddr 32 5K 7K 166960K 42 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 4 1K 1K 166960K 4 0 counters 60 35K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 32 0 iov 0 0K 16K 166960K 25 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 84K 166960K 1658 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 91 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 21 77K 121K 166960K 756 0 sigio 0 0K 0K 166960K 13 0 proc 58 79K 115K 166960K 517 0 subproc 63 3K 4K 166960K 324 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 85 0 in_multi 67 5K 6K 166960K 104 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 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 462 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 200 64K 90K 166960K 7891 0 UVM aobj 89 7K 7K 166960K 92 0 pinsyscall 43 86K 114K 166960K 1814 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 52 0 NDP 9 0K 1K 166960K 25 0 temp 70 6899K 6964K 166960K 7021 0 kqueue 13 20K 30K 166960K 156 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 117 0 113 2 0 2 2 0 8 1 rtentry 112 105 0 24 3 0 3 3 0 8 0 unpcb 144 656 0 640 5 2 3 5 0 8 2 syncache 336 10 0 10 1 1 0 1 0 8 0 tcpqe 32 4 0 4 1 1 0 1 0 8 0 tcpcb 808 255 0 249 4 2 2 4 0 8 1 arp 120 17 0 4 1 0 1 1 0 8 0 ipq 40 5 0 1 1 0 1 1 0 8 0 ipqe 40 11 0 5 1 0 1 1 0 8 0 inpcb 376 859 0 850 17 9 8 12 0 8 6 nd6 136 23 0 7 1 0 1 1 0 8 0 kcovpl 48 36 0 29 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 432 0 93 27 0 27 27 0 8 3 art_table 32 433 0 93 4 0 4 4 0 8 0 art_node 16 104 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 89 0 79 1 0 1 1 0 8 0 shmpl 112 89 0 3 3 0 3 3 0 8 0 pool(0xffffffff835775c0:shmpl): page inconsistency: page 0xfffffd805e003000; 18 on list, 16 missing, 35 items per page dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2298 0 766 96 0 96 96 0 8 0 ffsino 280 2298 0 766 110 0 110 110 0 8 0 nchpl 144 3203 0 1498 64 0 64 64 0 8 0 uvmvnodes 80 2631 0 0 54 0 54 54 0 8 0 vnodes 216 2631 0 0 147 0 147 147 0 8 0 namei 1024 11047 0 11046 1 0 1 1 0 8 0 percpumem 16 46 0 2 1 0 1 1 0 8 0 kstatmem 264 22 0 4 2 0 2 2 0 8 0 scxspl 216 9899 0 9898 9 5 4 7 1 8 3 plimitpl 152 367 0 345 2 0 2 2 0 8 1 sigapl 424 990 0 938 8 1 7 8 0 8 0 futexpl 64 7351 0 7349 1 0 1 1 0 8 0 knotepl 120 326 0 0 10 0 10 10 0 8 0 kqueuepl 216 331 0 322 9 4 5 5 0 8 4 pipepl 328 321 0 294 8 5 3 8 0 8 0 fdescpl 504 971 0 938 7 1 6 6 0 8 1 filepl 152 5997 0 5803 17 5 12 17 0 8 3 lockfpl 104 262 0 260 1 0 1 1 0 8 0 lockfspl 48 55 0 53 1 0 1 1 0 8 0 sessionpl 144 56 0 41 1 0 1 1 0 8 0 pgrppl 48 98 0 76 1 0 1 1 0 8 0 ucredpl 104 891 0 875 1 0 1 1 0 8 0 zombiepl 144 938 0 938 1 0 1 1 0 8 1 processpl 1168 990 0 938 5 0 5 5 0 8 0 procpl 648 1876 0 1820 7 0 7 7 0 8 1 sockpl 688 1641 0 1612 13 4 9 13 0 8 5 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 455 0 0 29 0 29 29 0 8 0 bufpl 280 3192 0 124 220 0 220 220 0 8 0 anonpl 24 176437 0 173242 70 10 60 69 0 185 20 amapchunkpl 152 25611 0 25184 37 9 28 37 0 158 7 amappl16 200 4062 0 4045 30 20 10 27 0 8 5 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 117 0 106 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1584 0 1552 2 0 2 2 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 26 0 26 1 1 0 1 0 8 0 amappl9 144 265 0 264 2 1 1 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 114 0 103 1 0 1 1 0 8 0 amappl6 120 248 0 243 1 0 1 1 0 8 0 amappl5 112 127 0 121 1 0 1 1 0 8 0 amappl4 104 312 0 296 1 0 1 1 0 8 0 amappl3 96 4840 0 4741 4 0 4 4 0 8 0 amappl2 88 694 0 635 2 0 2 2 0 8 0 amappl1 80 11018 0 10461 16 2 14 16 0 8 0 amappl 88 7441 0 7291 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 91 0 3 2 0 2 2 0 8 0 uaddrrnd 24 971 0 938 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 971 0 938 1 0 1 1 0 8 0 vmmpekpl 168 10602 0 10570 3 0 3 3 0 8 0 vmmpepl 168 67567 0 65777 109 9 100 109 0 357 7 vmsppl 456 970 0 938 7 2 5 6 0 8 0 rwobjpl 64 24351 0 20805 59 1 58 58 0 8 0 pdppl 4096 1949 0 1876 121 40 81 97 0 8 8 pvpl 32 17575 0 0 142 0 142 142 0 265 0 pmappl 248 970 0 938 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 319 0 46 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83491ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83679888) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83679888) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800037970e60,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7305a74aea70, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83491ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83679888) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83679888) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800037970e60,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7305a74aea70, 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:437 panic(ffffffff830d2f4c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835775c0,1,ffff80003c5a2ec8) at pool_do_get+0x5da pool_get(ffffffff835775c0,1) at pool_get+0x149 shmget_allocate_segment(ffff8000ffff5468,ffff80003c5a3120,100,ffff80003c5a3070) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff5468,ffff80003c5a3120,ffff80003c5a3070) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c5a3120) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a3120) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfca3fd33ed0, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830d2f4c) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff835775c0,1,ffff80003c5a2ec8) at pool_do_get+0x5da pool_get(ffffffff835775c0,1) at pool_get+0x149 shmget_allocate_segment(ffff8000ffff5468,ffff80003c5a3120,100,ffff80003c5a3070) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff5468,ffff80003c5a3120,ffff80003c5a3070) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c5a3120) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a3120) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfca3fd33ed0, count: -8