panic: pool_do_get: shmpl free list modified: page 0xfffffd8060903000; item addr 0xfffffd8060903e00; offset 0x40=0x69dec02a Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *474535 45996 32767 0x10 0x4000000 1K syz-executor 341451 84524 32767 0x10 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83448a90) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf600,1,ffff80003c447c88) at pool_do_get+0x5df pool_get(ffffffff839bf600,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c411780,ffff80003c447ee0,101,ffff80003c447e30) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c411780,ffff80003c447ee0,ffff80003c447e30) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c447ee0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c447ee0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35fb3e21a00, 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 0xfffffd8060903000; item addr 0xfffffd8060903e00; offset 0x40=0x69dec02a ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83448a90) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf600,1,ffff80003c447c88) at pool_do_get+0x5df pool_get(ffffffff839bf600,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c411780,ffff80003c447ee0,101,ffff80003c447e30) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c411780,ffff80003c447ee0,ffff80003c447e30) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c447ee0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c447ee0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35fb3e21a00, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c447ab0 rbx 0xffff8000299aee07 rdx 0 rcx 0xffff80003c411780 rax 0xffff8000299adff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd90f94bae249e5c1 r11 0xf40d12504de57240 r12 0xffff8000299aec08 r13 0 r14 0 r15 0x1 rip 0xffffffff827c3e75 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c447aa0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=474535 pid=45996 tcnt=4 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=0xffff80003c4114e8,0xffffffff83993338 process=0xffff80003c3dc020 user=0xffff80003c442000, vmspace=0xfffffd806c927210 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45996 426519 85156 32767 2 0x10 syz-executor 45996 521537 85156 32767 3 0x4000090 fsleep syz-executor 45996 300973 85156 32767 2 0x4000010 syz-executor *45996 474535 85156 32767 7 0x4000010 syz-executor 9090 456494 17010 32767 2 0x10 syz-executor 9090 353066 17010 32767 3 0x4000090 fsleep syz-executor 9090 371144 17010 32767 3 0x4000090 fsleep syz-executor 72314 360232 84524 32767 2 0xc90 syz-executor 72314 240368 84524 32767 3 0x4000090 ttyin syz-executor 72314 486996 84524 32767 3 0x4000090 fsleep syz-executor 42740 140264 6750 32767 2 0xc90 syz-executor 42740 398148 6750 32767 3 0x4000090 kqread syz-executor 42740 289789 6750 32767 3 0x4000090 fsleep syz-executor 65767 605 6822 32767 2 0xc90 syz-executor 65767 266711 6822 32767 3 0x4000090 lockf syz-executor 65767 516624 6822 32767 3 0x4000090 lockf syz-executor 65767 304976 6822 32767 3 0x4000090 fsleep syz-executor 85482 72098 36142 32767 2 0x10000c90 syz-executor 6822 499095 80164 32767 2 0xc90 syz-executor 88078 151659 78977 32767 2 0xc90 syz-executor 85156 158499 51049 32767 2 0xc90 syz-executor 78122 157812 74935 32767 2 0x10000c90 syz-executor 6750 450548 54668 32767 2 0xc90 syz-executor 17010 487010 58407 32767 2 0xc90 syz-executor 84524 341451 24395 32767 7 0x10 syz-executor 36142 323189 13320 0 3 0x82 wait syz-executor 80164 500679 13320 0 3 0x82 wait syz-executor 54668 132848 13320 0 3 0x82 wait syz-executor 78977 254459 13320 0 3 0x82 wait syz-executor 24395 360108 13320 0 3 0x82 wait syz-executor 74935 129820 13320 0 3 0x82 wait syz-executor 58407 109378 13320 0 3 0x82 wait syz-executor 51049 169526 13320 0 3 0x82 wait syz-executor 13320 208349 83185 0 3 0x82 kqread syz-executor 83185 129809 877 0 3 0x10008a sigsusp ksh 877 449480 35699 0 3 0x98 kqread sshd-session 35699 395871 63491 0 3 0x92 kqread sshd-session 5652 156084 1 0 3 0x100083 ttyin getty 63491 35204 1 0 3 0x88 kqread sshd 57974 332892 5929 73 3 0x1100090 kqread syslogd 5929 221255 1 0 3 0x100082 sbwait syslogd 28734 461134 1 0 3 0x100080 kqread resolvd 71217 332945 90994 77 3 0x100092 kqread dhcpleased 82928 436715 90994 77 3 0x100092 kqread dhcpleased 90994 245375 1 0 3 0x80 kqread dhcpleased 83688 332541 0 0 3 0x14200 bored smr 6155 423435 0 0 2 0x14200 zerothread 73154 394112 0 0 3 0x14200 aiodoned aiodoned 72907 413871 0 0 3 0x14200 syncer update 87193 105841 0 0 3 0x14200 cleaner cleaner 4947 96432 0 0 3 0x14200 reaper reaper 90678 516838 0 0 3 0x14200 pgdaemon pagedaemon 12112 183849 0 0 3 0x14200 bored viomb 35644 499670 0 0 3 0x40014200 acpi0 acpi0 50417 48433 0 0 3 0x40014200 idle1 84228 522181 0 0 3 0x14200 bored softnet1 82897 451905 0 0 3 0x14200 bored softnet0 16987 119703 0 0 3 0x14200 bored systqmp 63539 523835 0 0 3 0x14200 bored systq 68513 415661 0 0 3 0x14200 tmoslp softclockmp 61302 173071 0 0 3 0x40014200 tmoslp softclock 31110 144628 0 0 3 0x40014200 idle0 1 335535 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 (0xffffffff839bf618) #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:482 #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 45996 (syz-executor) thread 0xffff80003c411780 (474535) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8396dd40) #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 (0xffffffff839bf618) #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:482 #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 11059 12019K 12034K 166960K 12150 0 pcb 17 12K 12K 166960K 17 0 rtable 239 6K 7K 166960K 349 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 33 0 iov 0 0K 4K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1356 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 4 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 89K 125K 166960K 201 0 sigio 0 0K 0K 166960K 1 0 proc 58 99K 179K 166960K 502 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 14 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 355 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 255 176K 196K 166960K 3482 0 UVM aobj 3 2K 3K 166960K 6 0 pinsyscall 45 90K 112K 166960K 1262 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 15 0K 2K 166960K 27 0 temp 70 9082K 9146K 166960K 4081 0 kqueue 16 26K 30K 166960K 41 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 35 1 0 1 1 0 8 0 rtentry 176 112 0 1 6 0 6 6 0 8 0 unpcb 144 63 0 47 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpcb 736 38 0 33 2 0 2 2 0 8 1 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 112 0 104 2 0 2 2 0 8 0 nd6 152 25 0 0 1 0 1 1 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 256 455 0 0 29 0 29 29 0 8 0 art_table 40 456 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 3 0 1 1 0 1 1 0 8 0 shmpl 112 3 0 3 1 0 1 1 0 8 1 pool(0xffffffff839bf600:shmpl): page inconsistency: page 0xfffffd8060903000; 34 on list, 0 missing, 35 items per page dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1645 0 184 92 0 92 92 0 8 0 ffsino 296 1645 0 184 113 0 113 113 0 8 0 nchpl 144 1914 0 222 63 0 63 63 0 8 0 vnodes 216 1726 0 0 96 0 96 96 0 8 0 namei 1024 5688 0 5688 2 0 2 2 0 8 2 percpumem 16 50 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 6395 0 6395 4 1 3 3 1 8 3 plimitpl 152 42 0 15 2 0 2 2 0 8 0 sigapl 424 487 0 433 7 0 7 7 0 8 0 knotepl 120 105 0 0 4 0 4 4 0 8 0 kqueuepl 224 39 0 27 1 0 1 1 0 8 0 pipepl 344 116 0 89 3 0 3 3 0 8 0 fdescpl 528 471 0 435 4 0 4 4 0 8 0 filepl 160 1778 0 1546 10 0 10 10 0 8 0 lockfpl 104 28 0 21 1 0 1 1 0 8 0 lockfspl 48 12 0 8 1 0 1 1 0 8 0 sessionpl 144 24 0 8 1 0 1 1 0 8 0 pgrppl 48 98 0 74 1 0 1 1 0 8 0 ucredpl 104 186 0 167 1 0 1 1 0 8 0 zombiepl 144 436 0 433 1 0 1 1 0 8 0 processpl 1232 487 0 433 5 0 5 5 0 8 0 procpl 664 583 0 517 6 0 6 6 0 8 0 sockpl 752 215 0 187 4 0 4 4 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 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 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 195 0 0 13 0 13 13 0 8 0 bufpl 280 2297 0 102 157 0 157 157 0 8 0 anonpl 32 7412 0 0 60 0 60 60 0 246 0 amapchunkpl 152 10080 0 9521 25 0 25 25 0 158 0 amappl16 200 2221 0 2197 14 0 14 14 0 8 10 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 398 0 396 1 0 1 1 0 8 0 amappl13 176 115 0 105 1 0 1 1 0 8 0 amappl12 168 791 0 756 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 269 0 269 1 0 1 1 0 8 1 amappl8 136 98 0 97 1 0 1 1 0 8 0 amappl7 128 136 0 125 1 0 1 1 0 8 0 amappl6 120 169 0 167 1 0 1 1 0 8 0 amappl5 112 88 0 81 1 0 1 1 0 8 0 amappl4 104 256 0 239 1 0 1 1 0 8 0 amappl3 96 1772 0 1643 5 1 4 4 0 8 0 amappl2 88 495 0 442 2 0 2 2 0 8 0 amappl1 80 9666 0 9103 16 0 16 16 0 8 3 amappl 88 2810 0 2621 5 0 5 5 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 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 5 0 3 1 0 1 1 0 8 0 uaddrrnd 24 471 0 435 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 471 0 435 1 0 1 1 0 8 0 vmmpekpl 168 5536 0 5503 2 0 2 2 0 8 0 vmmpepl 168 38806 0 36794 102 0 102 102 0 357 6 vmsppl 488 470 0 435 7 1 6 6 0 8 1 rwobjpl 80 14540 0 13595 26 1 25 25 0 8 2 pdppl 4096 949 0 870 107 16 91 97 0 8 12 pvpl 32 14219 0 0 116 1 115 115 0 265 0 pmappl 256 470 0 435 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 278 0 19 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838b9ff0) 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(ffffffff8396d540) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396d540) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff8396d540) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396d540) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 syscall(ffff80002f786db0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002f786db0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x776e6db85670, count: 4 ddb{0}> trace x86_ipi_db(ffffffff838b9ff0) 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(ffffffff8396d540) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396d540) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff8396d540) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396d540) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 syscall(ffff80002f786db0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002f786db0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x776e6db85670, count: -11 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(ffffffff83448a90) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf600,1,ffff80003c447c88) at pool_do_get+0x5df pool_get(ffffffff839bf600,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c411780,ffff80003c447ee0,101,ffff80003c447e30) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c411780,ffff80003c447ee0,ffff80003c447e30) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c447ee0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c447ee0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35fb3e21a00, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83448a90) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf600,1,ffff80003c447c88) at pool_do_get+0x5df pool_get(ffffffff839bf600,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c411780,ffff80003c447ee0,101,ffff80003c447e30) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c411780,ffff80003c447ee0,ffff80003c447e30) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c447ee0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c447ee0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35fb3e21a00, count: -8