panic: pool_do_get: shmpl free list modified: page 0xfffffd806a830000; item addr 0xfffffd806a8307e0; offset 0x40=0x6a10c003 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 184236 45499 32767 0x10 0 0 syz-executor *373895 45499 32767 0x10 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834adb78) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3a810,1,ffff800039be5ef8) at pool_do_get+0x5df pool_get(ffffffff83a3a810,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffecfb0,ffff800039be6150,90,ffff800039be60a0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffecfb0,ffff800039be6150,ffff800039be60a0) at sys_shmget+0x195 sys/kern/sysv_shm.c:501 syscall(ffff800039be6150) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039be6150) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd9e2357740, 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 0xfffffd806a830000; item addr 0xfffffd806a8307e0; offset 0x40=0x6a10c003 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834adb78) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3a810,1,ffff800039be5ef8) at pool_do_get+0x5df pool_get(ffffffff83a3a810,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffecfb0,ffff800039be6150,90,ffff800039be60a0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffecfb0,ffff800039be6150,ffff800039be60a0) at sys_shmget+0x195 sys/kern/sysv_shm.c:501 syscall(ffff800039be6150) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039be6150) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd9e2357740, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800039be5d20 rbx 0xffff80002999ee07 rdx 0xffff8000015ae700 rcx 0xffff8000fffecfb0 rax 0xffff80002999dff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x78e7dd9ac57c36ce r11 0x936c8bf3d6102416 r12 0xffff80002999ec08 r13 0 r14 0 r15 0x1 rip 0xffffffff81a80485 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800039be5d10 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=373895 pid=45499 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=0xffff8000fffedca8,0xffffffff83b107c8 process=0xffff8000fffeb510 user=0xffff800039be1000, vmspace=0xfffffd800d0b37c8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66666 259299 43727 32767 2 0x10 syz-executor 66666 70884 43727 32767 3 0x4000090 fsleep syz-executor 17329 471262 7076 32767 2 0x10 syz-executor 91269 301502 74325 32767 2 0x10 syz-executor 45499 184236 92747 32767 7 0x10 syz-executor *45499 373895 92747 32767 7 0x4000010 syz-executor 54003 226256 42215 0 2 0x2 syz-executor 43727 349179 67971 32767 3 0x90 nanoslp syz-executor 71907 254982 56692 32767 3 0x10 biowait syz-executor 7076 331480 42196 32767 3 0x90 nanoslp syz-executor 74325 394151 75208 32767 2 0x10 syz-executor 69792 359641 53460 32767 3 0x90 nanoslp syz-executor 32734 522874 88995 32767 3 0x90 nanoslp syz-executor 92747 366157 51737 32767 3 0x90 nanoslp syz-executor 51737 280504 42215 0 3 0x82 wait syz-executor 67971 292390 42215 0 3 0x82 wait syz-executor 53460 7213 42215 0 3 0x82 wait syz-executor 88995 171270 42215 0 3 0x82 wait syz-executor 56692 96133 42215 0 3 0x82 wait syz-executor 42196 83103 42215 0 3 0x82 wait syz-executor 75208 26893 42215 0 3 0x82 wait syz-executor 42215 78689 56552 0 3 0x82 kqread syz-executor 56552 43963 76879 0 3 0x10008a sigsusp ksh 76879 338828 23509 0 3 0x98 kqread sshd-session 23509 35311 69929 0 3 0x92 kqread sshd-session 50276 326560 1 0 3 0x100083 ttyin getty 69929 444338 1 0 3 0x88 kqread sshd 77615 323415 82937 73 3 0x1100090 kqread syslogd 82937 284512 1 0 3 0x100082 sbwait syslogd 40877 362737 1 0 3 0x100080 kqread resolvd 15339 485953 33081 77 3 0x100092 kqread dhcpleased 82677 242630 33081 77 3 0x100092 kqread dhcpleased 33081 487921 1 0 3 0x80 kqread dhcpleased 90760 213933 0 0 3 0x14200 bored smr 26430 203629 0 0 2 0x14200 zerothread 15652 69837 0 0 3 0x14200 aiodoned aiodoned 32513 460524 0 0 3 0x14200 syncer update 42627 291494 0 0 3 0x14200 cleaner cleaner 87738 23431 0 0 3 0x14200 reaper reaper 57886 33021 0 0 3 0x14200 pgdaemon pagedaemon 70939 398029 0 0 3 0x14200 bored viomb 48036 233933 0 0 3 0x40014200 acpi0 acpi0 67114 343062 0 0 3 0x40014200 idle1 49479 186985 0 0 3 0x14200 bored softnet1 4476 367332 0 0 3 0x14200 bored softnet0 33753 99963 0 0 3 0x14200 bored systqmp 79082 77953 0 0 3 0x14200 bored systq 16449 27359 0 0 3 0x14200 tmoslp softclockmp 57932 392164 0 0 3 0x40014200 tmoslp softclock 18111 174801 0 0 3 0x40014200 idle0 1 98722 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 (0xffffffff83a3a828) #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:501 #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 45499 (syz-executor) thread 0xffff8000fffecfb0 (373895) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83ab2c40) #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 (0xffffffff83a3a828) #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:501 #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 71907 (syz-executor) thread 0xffff8000fffed778 (254982) exclusive rrwlock inode r = 0 (0xfffffd806b20cea8) #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:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1893 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d1dc550) #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:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1893 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11054 12017K 12034K 166960K 12148 0 pcb 17 12K 12K 166960K 17 0 rtable 219 6K 7K 166960K 358 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 6 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 2K 166960K 31 0 iov 0 0K 4K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1288 81K 81K 166960K 1395 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 23 82K 125K 166960K 234 0 proc 58 99K 147K 166960K 514 0 subproc 63 3K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 12 0 in_multi 88 6K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 5 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 385 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 220 135K 161K 166960K 3664 0 UVM aobj 5 2K 4K 166960K 7 0 pinsyscall 44 88K 110K 166960K 1349 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 23 0 NDP 10 0K 2K 166960K 27 0 temp 34 9114K 9179K 166960K 4375 0 kqueue 13 20K 24K 166960K 34 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 176 113 0 12 6 0 6 6 0 8 0 unpcb 144 67 0 52 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 83 0 77 4 0 4 4 0 8 2 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 166 0 155 4 0 4 4 0 8 2 nd6 152 26 0 3 1 0 1 1 0 8 0 kcovpl 48 12 0 5 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 1 art_table 40 469 0 44 5 0 5 5 0 8 0 art_node 32 113 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 64 3 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 2 1 0 1 1 0 8 0 pool(0xffffffff83a3a810:shmpl): page inconsistency: page 0xfffffd806a830000; 32 on list, 2 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1656 0 187 92 0 92 92 0 8 0 ffsino 296 1656 0 187 114 0 114 114 0 8 0 nchpl 144 1948 0 257 63 0 63 63 0 8 0 vnodes 216 1773 0 0 99 0 99 99 0 8 0 namei 1024 5849 0 5849 1 0 1 1 0 8 1 percpumem 16 50 0 1 1 0 1 1 0 8 0 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scxspl 216 6647 0 6646 4 3 1 3 1 8 0 plimitpl 152 53 0 31 2 0 2 2 0 8 1 sigapl 424 527 0 476 7 0 7 7 0 8 0 knotepl 120 63 0 0 2 0 2 2 0 8 0 kqueuepl 224 35 0 26 1 0 1 1 0 8 0 pipepl 344 142 0 115 3 0 3 3 0 8 0 fdescpl 528 511 0 476 4 0 4 4 0 8 0 filepl 160 1931 0 1730 11 0 11 11 0 8 0 lockfpl 104 31 0 28 1 0 1 1 0 8 0 lockfspl 48 14 0 11 1 0 1 1 0 8 0 sessionpl 144 31 0 16 1 0 1 1 0 8 0 pgrppl 48 46 0 23 1 0 1 1 0 8 0 ucredpl 104 227 0 209 1 0 1 1 0 8 0 zombiepl 144 478 0 476 1 0 1 1 0 8 0 processpl 1232 527 0 476 5 0 5 5 0 8 0 procpl 664 662 0 609 6 0 6 6 0 8 1 sockpl 752 276 0 247 7 0 7 7 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 204 0 0 13 0 13 13 0 8 0 bufpl 280 2324 0 102 159 0 159 159 0 8 0 anonpl 32 9570 0 0 78 0 78 78 0 246 0 amapchunkpl 152 11158 0 10685 40 0 40 40 0 158 17 amappl16 200 2117 0 2098 14 0 14 14 0 8 12 amappl15 192 22 0 22 2 2 0 1 0 8 0 amappl14 184 410 0 409 1 0 1 1 0 8 0 amappl13 176 208 0 198 1 0 1 1 0 8 0 amappl12 168 748 0 716 2 0 2 2 0 8 0 amappl11 160 17 0 17 1 1 0 1 0 8 0 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 265 0 265 1 1 0 1 0 8 0 amappl8 136 101 0 99 1 0 1 1 0 8 0 amappl7 128 147 0 136 1 0 1 1 0 8 0 amappl6 120 154 0 153 1 0 1 1 0 8 0 amappl5 112 105 0 98 1 0 1 1 0 8 0 amappl4 104 271 0 256 1 0 1 1 0 8 0 amappl3 96 1935 0 1823 6 2 4 5 0 8 0 amappl2 88 533 0 483 2 0 2 2 0 8 0 amappl1 80 11053 0 10484 16 0 16 16 0 8 2 amappl 88 2941 0 2782 5 0 5 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 6 0 2 1 0 1 1 0 8 0 uaddrrnd 24 511 0 476 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 511 0 476 1 0 1 1 0 8 0 vmmpekpl 168 6242 0 6201 3 0 3 3 0 8 1 vmmpepl 168 42692 0 40777 104 0 104 104 0 357 12 vmsppl 488 510 0 476 7 1 6 6 0 8 0 rwobjpl 80 15739 0 14837 26 0 26 26 0 8 4 pdppl 4096 1029 0 952 115 34 81 97 0 8 4 pvpl 32 17632 0 0 143 0 143 143 0 265 0 pmappl 256 510 0 476 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 288 0 37 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff839aaff0) 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(ffffffff83ab2440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83ab2440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff800039bc0750,ffff8000002a3480) 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: 0x747161979d50, count: 9 ddb{0}> trace x86_ipi_db(ffffffff839aaff0) 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(ffffffff83ab2440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83ab2440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff800039bc0750,ffff8000002a3480) 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: 0x747161979d50, 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(ffffffff834adb78) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3a810,1,ffff800039be5ef8) at pool_do_get+0x5df pool_get(ffffffff83a3a810,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffecfb0,ffff800039be6150,90,ffff800039be60a0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffecfb0,ffff800039be6150,ffff800039be60a0) at sys_shmget+0x195 sys/kern/sysv_shm.c:501 syscall(ffff800039be6150) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039be6150) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd9e2357740, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834adb78) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3a810,1,ffff800039be5ef8) at pool_do_get+0x5df pool_get(ffffffff83a3a810,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffecfb0,ffff800039be6150,90,ffff800039be60a0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffecfb0,ffff800039be6150,ffff800039be60a0) at sys_shmget+0x195 sys/kern/sysv_shm.c:501 syscall(ffff800039be6150) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039be6150) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd9e2357740, count: -8