panic: pool_do_get: shmpl free list modified: page 0xfffffd805d815000; item addr 0xfffffd805d815380; offset 0x40=0xf61ecc88 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 94321 88948 -1 0x10 0x4000000 1K syz-executor 115908 80656 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d6f4f) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8398dd88,1,ffff80003c4317f8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff8398dd88,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a296cf0,ffff80003c431a50,186,ffff80003c4319a0) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a296cf0,ffff80003c431a50,ffff80003c4319a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c431a50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c431a50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6dfbd8596d0, 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 0xfffffd805d815000; item addr 0xfffffd805d815380; offset 0x40=0xf61ecc88 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d6f4f) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8398dd88,1,ffff80003c4317f8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff8398dd88,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a296cf0,ffff80003c431a50,186,ffff80003c4319a0) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a296cf0,ffff80003c431a50,ffff80003c4319a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c431a50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c431a50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6dfbd8596d0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c431630 rbx 0xffff8000299dedd7 rdx 0 rcx 0xffff80002a296cf0 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x19699aff7b4c35db r11 0xa7d1c5217ccfa13a r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff81fadfc5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c431620 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=94321 pid=88948 tcnt=3 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=0xffff80002a297730,0xffff80002a297220 process=0xffff80003b81e208 user=0xffff80003c42c000, vmspace=0xfffffd805c713988 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10726 193750 92255 0 2 0 syz-executor 10726 316616 92255 0 2 0x4000000 syz-executor 88948 24855 44344 -1 2 0x10 syz-executor *88948 94321 44344 -1 7 0x4000010 syz-executor 88948 83356 44344 -1 3 0x4000090 fsleep syz-executor 80656 115908 72592 0 7 0 syz-executor 80656 414209 72592 0 2 0x4000000 syz-executor 30945 238018 32084 0 2 0 syz-executor 30945 4806 32084 0 3 0x4000080 fsleep syz-executor 30945 188269 32084 0 3 0x4000080 fsleep syz-executor 40345 384296 21193 0 3 0x80 nanoslp syz-executor 40345 208085 21193 0 3 0x4000080 sbwait syz-executor 40345 15099 21193 0 3 0x4000080 fsleep syz-executor 13130 81099 98827 0 3 0x80 nanoslp syz-executor 13130 271170 98827 0 3 0x4000080 sbwait syz-executor 13130 286821 98827 0 3 0x4000080 sbwait syz-executor 13130 180832 98827 0 3 0x4000080 fsleep syz-executor 35075 392393 0 0 3 0x14200 acct acct 98827 473362 87443 0 3 0x82 nanoslp syz-executor 51540 196032 87443 0 3 0x82 wait syz-executor 44344 134783 87443 0 3 0x82 nanoslp syz-executor 54256 478217 0 0 3 0x14200 bored sosplice 32084 468368 87443 0 3 0x82 nanoslp syz-executor 21193 46738 87443 0 3 0x82 nanoslp syz-executor 92255 49195 87443 0 3 0x82 nanoslp syz-executor 58768 369453 87443 0 2 0x2 syz-executor 72592 441749 87443 0 3 0x82 nanoslp syz-executor 87443 40828 21434 0 2 0x2 syz-executor 21434 262087 97984 0 3 0x10008a sigsusp ksh 97984 61792 62982 0 3 0x98 kqread sshd-session 62982 461064 21723 0 3 0x92 kqread sshd-session 32784 486437 1 0 3 0x100083 ttyopn getty 21723 501965 1 0 3 0x88 kqread sshd 77812 289173 87650 74 3 0x1100092 bpf pflogd 87650 89785 1 0 3 0x80 sbwait pflogd 88265 420275 9620 73 3 0x1100090 kqread syslogd 9620 314 1 0 3 0x100082 sbwait syslogd 85204 462255 1 0 3 0x100080 kqread resolvd 35405 470848 62548 77 3 0x100092 kqread dhcpleased 84996 224882 62548 77 3 0x100092 kqread dhcpleased 62548 108492 1 0 3 0x80 kqread dhcpleased 1288 270639 0 0 3 0x14200 bored smr 46046 458586 0 0 3 0x14200 pgzero zerothread 4529 16496 0 0 3 0x14200 aiodoned aiodoned 16369 98850 0 0 3 0x14200 syncer update 4685 221792 0 0 3 0x14200 cleaner cleaner 59034 128294 0 0 3 0x14200 reaper reaper 67920 453775 0 0 3 0x14200 pgdaemon pagedaemon 4655 292630 0 0 3 0x14200 bored viomb 35541 370923 0 0 3 0x40014200 acpi0 acpi0 70389 86350 0 0 3 0x40014200 idle1 44715 188542 0 0 3 0x14200 bored softnet3 59913 287135 0 0 3 0x14200 bored softnet2 34184 115750 0 0 3 0x14200 bored softnet1 73133 455741 0 0 2 0x14200 softnet0 96254 190958 0 0 3 0x14200 bored systqmp 58618 368684 0 0 3 0x14200 bored systq 91208 79765 0 0 3 0x14200 tmoslp softclockmp 44437 153167 0 0 3 0x40014200 tmoslp softclock 77141 270725 0 0 3 0x40014200 idle0 1 494616 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex shmpl r = 0 (0xffffffff8398dda0) #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:748 #7 Xsyscall+0x128 Process 88948 (syz-executor) thread 0xffff80002a296cf0 (94321) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83940f90) #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:748 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff8398dda0) #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:748 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10247 11166K 13945K 166960K 13238 0 pcb 18 14K 15K 166960K 152 0 rtable 232 10K 10K 166960K 812 0 pf 37 18K 81K 166960K 123 0 ifaddr 41 7K 8K 166960K 131 0 ifgroup 59 2K 2K 166960K 160 0 sysctl 4 1K 9K 166960K 14 0 counters 70 37K 37K 166960K 174 0 ioctlops 0 0K 4K 166960K 1594 0 iov 0 0K 28K 166960K 118 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1540 97K 97K 166960K 2353 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 52 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 942 0 sigio 0 0K 0K 166960K 15 0 proc 72 91K 116K 166960K 711 0 subproc 72 4K 4K 166960K 100 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 100 0 in_multi 86 6K 7K 166960K 350 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 478 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 248 161K 175K 166960K 10292 0 UVM aobj 18 3K 3K 166960K 21 0 pinsyscall 43 86K 106K 166960K 2148 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 26 0 NDP 13 0K 1K 166960K 99 0 temp 76 8684K 8812K 166960K 52137 0 kqueue 13 20K 28K 166960K 160 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 120 150 0 145 3 0 3 3 0 8 2 rtentry 176 291 0 195 6 0 6 6 0 8 0 unpcb 144 675 0 654 8 6 2 6 0 8 1 syncache 336 8 0 8 3 2 1 1 0 8 1 tcpcb 736 300 0 296 7 2 5 7 0 8 4 arp 128 25 0 6 1 0 1 1 0 8 0 inpcb 328 930 0 917 17 12 5 12 0 8 3 nd6 144 68 0 44 1 0 1 1 0 8 0 pkpcb 40 17 0 17 2 2 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 37 0 37 1 1 0 1 0 8 0 pppxif 1504 7 0 7 2 2 0 1 0 8 0 pffrag 232 10 0 3 1 0 1 1 0 482 0 pffrnode 88 9 0 3 1 0 1 1 0 8 0 pffrent 40 18 0 11 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 59 0 25 1 0 1 1 0 8 0 pfstkey 128 59 0 25 2 0 2 2 0 8 0 pfstate 384 59 0 25 4 0 4 4 0 8 0 pfrule 1344 24 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1484 0 1047 77 49 28 77 0 8 0 art_table 40 1486 0 1047 13 8 5 13 0 8 0 art_node 32 289 0 202 2 0 2 2 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semapl 112 50 0 40 1 0 1 1 0 8 0 shmpl 112 18 0 3 1 0 1 1 0 8 0 pool(0xffffffff8398dd88:shmpl): page inconsistency: page 0xfffffd805d815000; 19 on list, 15 missing, 35 items per page dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3190 0 1677 96 0 96 96 0 8 0 ffsino 288 3190 0 1677 109 0 109 109 0 8 0 nchpl 144 4493 0 2797 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 1 0 1 0 8 0 uvmvnodes 80 3834 0 0 79 0 79 79 0 8 0 vnodes 216 3834 0 0 213 0 213 213 0 8 0 namei 1024 15007 0 15007 1 0 1 1 0 8 1 percpumem 16 102 0 52 1 0 1 1 0 8 0 kstatmem 264 94 0 64 3 0 3 3 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 30603 0 30603 12 11 1 8 1 8 1 plimitpl 152 213 0 196 1 0 1 1 0 8 0 sigapl 424 1252 0 1200 7 1 6 7 0 8 0 knotepl 120 587 0 0 19 1 18 18 0 8 0 kqueuepl 224 261 0 252 2 1 1 2 0 8 0 pipepl 336 191 0 164 3 0 3 3 0 8 0 fdescpl 520 1229 0 1197 3 0 3 3 0 8 0 filepl 160 7651 0 7426 19 3 16 16 0 8 4 lockfpl 104 661 0 659 3 0 3 3 0 8 2 lockfspl 48 272 0 270 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 117 0 100 1 0 1 1 0 8 0 ucredpl 104 1585 0 1571 1 0 1 1 0 8 0 zombiepl 144 1202 0 1200 1 0 1 1 0 8 0 processpl 1240 1252 0 1200 5 0 5 5 0 8 0 procpl 656 2557 0 2494 6 0 6 6 0 8 0 sosppl 168 3 0 3 2 2 0 1 0 8 0 sockpl 728 1781 0 1742 22 12 10 16 0 8 6 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 1 14 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 44 0 0 6 0 6 6 0 8 0 mtagpl 96 38 0 0 1 0 1 1 0 8 0 mbufpl 256 1241 0 0 78 0 78 78 0 8 0 bufpl 280 12811 0 6669 439 0 439 439 0 8 0 anonpl 32 10668 0 0 86 0 86 86 0 246 0 amapchunkpl 152 33898 0 33377 40 12 28 32 0 158 7 amappl16 200 5644 0 5609 38 23 15 25 0 8 8 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 128 0 116 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 2 0 1 0 8 0 amappl12 168 1932 0 1900 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 26 0 26 1 1 0 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 119 0 106 1 0 1 1 0 8 0 amappl6 120 217 0 214 1 0 1 1 0 8 0 amappl5 112 140 0 130 1 0 1 1 0 8 0 amappl4 104 347 0 328 1 0 1 1 0 8 0 amappl3 96 6564 0 6443 4 0 4 4 0 8 0 amappl2 88 724 0 662 2 0 2 2 0 8 0 amappl1 80 12752 0 12150 16 1 15 15 0 8 0 amappl 88 9375 0 9200 6 1 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 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 20 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1229 0 1197 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1229 0 1197 1 0 1 1 0 8 0 vmmpekpl 168 11274 0 11225 3 0 3 3 0 8 0 vmmpepl 168 85139 0 83085 109 8 101 108 0 357 4 vmsppl 480 1228 0 1197 6 1 5 5 0 8 0 rwobjpl 72 29446 0 24649 88 0 88 88 0 8 0 pdppl 4096 2465 0 2394 107 36 71 85 0 8 0 pvpl 32 17167 0 0 139 0 139 139 0 265 0 pmappl 256 1228 0 1197 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 518 0 94 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83893ff0) 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(ffffffff83940d88) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83940d88) 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 end of kernel end trace frame: 0x701851aa1870, count: 8 ddb{0}> trace x86_ipi_db(ffffffff83893ff0) 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(ffffffff83940d88) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83940d88) 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 end of kernel end trace frame: 0x701851aa1870, count: -7 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(ffffffff833d6f4f) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8398dd88,1,ffff80003c4317f8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff8398dd88,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a296cf0,ffff80003c431a50,186,ffff80003c4319a0) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a296cf0,ffff80003c431a50,ffff80003c4319a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c431a50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c431a50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6dfbd8596d0, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d6f4f) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8398dd88,1,ffff80003c4317f8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff8398dd88,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a296cf0,ffff80003c431a50,186,ffff80003c4319a0) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a296cf0,ffff80003c431a50,ffff80003c4319a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c431a50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c431a50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6dfbd8596d0, count: -8