login: panic: pool_do_get: shmpl free list modified: page 0xfffffd8060015000; item addr 0xfffffd80600158c0; offset 0x40=0x69f62dc2 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *224119 4516 32767 0x10 0x4000000 0 syz-executor 121863 49916 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83443ffe) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a9ee40,1,ffff80003c4167d8) at pool_do_get+0x5df pool_get(ffffffff83a9ee40,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffe9778,ffff80003c416a30,0,ffff80003c416980) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffe9778,ffff80003c416a30,ffff80003c416980) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80003c416a30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c416a30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9086e07c650, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: pool_do_get: shmpl free list modified: page 0xfffffd8060015000; item addr 0xfffffd80600158c0; offset 0x40=0x69f62dc2 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83443ffe) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a9ee40,1,ffff80003c4167d8) at pool_do_get+0x5df pool_get(ffffffff83a9ee40,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffe9778,ffff80003c416a30,0,ffff80003c416980) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffe9778,ffff80003c416a30,ffff80003c416980) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80003c416a30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c416a30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9086e07c650, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c416600 rbx 0xffffffff838b2e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000fffe9778 rax 0xffffffff838b1ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe352ad5e25ebe5d2 r11 0xa5d4c7bd690d69af r12 0xffffffff838b2c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff8254b025 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4165f0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=224119 pid=4516 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=0xffff8000fffe9a10,0xffff80003a3f4a98 process=0xffff8000fffe79e0 user=0xffff80003c411000, vmspace=0xfffffd806c8905e0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13712 50425 49916 32767 2 0x10 syz-executor 13712 206270 49916 32767 2 0x4000010 syz-executor 73488 248580 58562 0 2 0 syz-executor 4516 130123 82212 32767 2 0x10 syz-executor * 4516 224119 82212 32767 7 0x4000010 syz-executor 60763 512496 21026 32767 2 0x10 syz-executor 60763 332887 21026 32767 3 0x4000090 fsleep syz-executor 58562 380876 67432 0 3 0x82 wait syz-executor 24665 165814 60392 32767 3 0x90 nanoslp syz-executor 24665 197889 60392 32767 3 0x4000090 sbwait syz-executor 24665 485652 60392 32767 3 0x4000090 fsleep syz-executor 21026 144038 26819 32767 3 0x90 nanoslp syz-executor 50386 392436 9262 32767 3 0x90 nanoslp syz-executor 82212 340276 25037 32767 3 0x90 nanoslp syz-executor 49916 121863 73186 32767 7 0x10 syz-executor 60392 123770 42174 32767 3 0x90 nanoslp syz-executor 94939 52091 44425 32767 3 0x10 biowait syz-executor 54289 121363 62657 32767 3 0x10 biowait syz-executor 9262 444994 67432 0 3 0x82 wait syz-executor 73186 469732 67432 0 3 0x82 wait syz-executor 25037 11943 67432 0 3 0x82 wait syz-executor 26819 329681 67432 0 3 0x82 wait syz-executor 62657 464410 67432 0 3 0x82 wait syz-executor 42174 221678 67432 0 3 0x82 wait syz-executor 44425 17427 67432 0 3 0x82 wait syz-executor 67432 14715 2216 0 3 0x82 kqread syz-executor 2216 429902 3965 0 3 0x10008a sigsusp ksh 3965 201385 88841 0 3 0x98 kqread sshd-session 88841 348005 41648 0 3 0x92 kqread sshd-session 27006 476010 1 0 3 0x100083 ttyin getty 41648 187837 1 0 3 0x88 kqread sshd 18834 493131 26289 73 3 0x1100090 kqread syslogd 26289 267101 1 0 3 0x100082 sbwait syslogd 19145 366647 1 0 3 0x100080 kqread resolvd 73601 2400 42247 77 3 0x100092 kqread dhcpleased 92328 409143 42247 77 3 0x100092 kqread dhcpleased 42247 168203 1 0 3 0x80 kqread dhcpleased 59407 255193 0 0 3 0x14200 bored smr 67061 405700 0 0 2 0x14200 zerothread 67848 59885 0 0 3 0x14200 aiodoned aiodoned 3669 397535 0 0 3 0x14200 syncer update 84364 272201 0 0 3 0x14200 cleaner cleaner 48671 167402 0 0 3 0x14200 reaper reaper 89432 162659 0 0 3 0x14200 pgdaemon pagedaemon 39945 2778 0 0 3 0x14200 bored viomb 85262 34996 0 0 3 0x40014200 acpi0 acpi0 63151 125485 0 0 3 0x40014200 idle1 23779 330853 0 0 3 0x14200 bored softnet1 9238 158551 0 0 3 0x14200 bored softnet0 15297 519531 0 0 3 0x14200 bored systqmp 85002 443958 0 0 3 0x14200 bored systq 79981 279879 0 0 3 0x14200 tmoslp softclockmp 3777 432121 0 0 3 0x40014200 tmoslp softclock 26281 80414 0 0 3 0x40014200 idle0 1 243910 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex shmpl r = 0 (0xffffffff83a9ee58) #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:484 #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 4516 (syz-executor) thread 0xffff8000fffe9778 (224119) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8399adc0) #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 (0xffffffff83a9ee58) #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:484 #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 94939 (syz-executor) thread 0xffff80002a266548 (52091) exclusive rrwlock inode r = 0 (0xfffffd806c31ca08) #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:3143 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d8db798) #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+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3128 #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 Process 54289 (syz-executor) thread 0xffff80002a266018 (121363) exclusive rrwlock inode r = 0 (0xfffffd806c31c8e0) #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+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #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 (0xfffffd806d3978c8) #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+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11051 12016K 12034K 166960K 12145 0 pcb 17 12K 12K 166960K 17 0 rtable 221 6K 7K 166960K 359 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 3 1K 9K 166960K 7 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 2K 166960K 38 0 iov 0 0K 16K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1289 81K 81K 166960K 1482 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 46 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 23 85K 125K 166960K 354 0 sigio 0 0K 0K 166960K 5 0 proc 58 99K 147K 166960K 526 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 98 0 in_multi 89 6K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 372 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 151K 160K 166960K 4819 0 UVM aobj 8 4K 4K 166960K 10 0 pinsyscall 44 88K 114K 166960K 1408 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 10 0K 2K 166960K 27 0 temp 44 9072K 9199K 166960K 4733 0 kqueue 14 22K 26K 166960K 53 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 176 0 173 5 0 5 5 0 8 4 rtentry 176 114 0 12 6 0 6 6 0 8 0 unpcb 144 254 0 236 6 0 6 6 0 8 4 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 236 0 232 7 0 7 7 0 8 6 arp 136 19 0 2 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 441 0 430 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 152 26 0 3 1 0 1 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 458 0 44 29 0 29 29 0 8 1 art_table 40 459 0 44 5 0 5 5 0 8 0 art_node 32 114 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 3 1 0 1 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 pool(0xffffffff83a9ee40:shmpl): page inconsistency: page 0xfffffd8060015000; 29 on list, 5 missing, 35 items per page dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1897 0 427 93 0 93 93 0 8 0 ffsino 296 1897 0 427 114 0 114 114 0 8 0 nchpl 144 2368 0 674 64 0 64 64 0 8 0 vnodes 216 2023 0 0 113 0 113 113 0 8 0 namei 1024 7745 0 7744 1 0 1 1 0 8 0 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 8087 0 8085 4 1 3 3 1 8 2 plimitpl 152 169 0 145 2 0 2 2 0 8 1 sigapl 424 629 0 578 7 0 7 7 0 8 0 knotepl 120 302 0 0 10 0 10 10 0 8 0 kqueuepl 224 63 0 53 1 0 1 1 0 8 0 pipepl 344 164 0 137 5 0 5 5 0 8 2 fdescpl 528 613 0 578 4 0 4 4 0 8 0 filepl 160 3488 0 3273 16 0 16 16 0 8 6 lockfpl 104 74 0 71 1 0 1 1 0 8 0 lockfspl 48 28 0 25 1 0 1 1 0 8 0 sessionpl 144 43 0 27 1 0 1 1 0 8 0 pgrppl 48 58 0 34 1 0 1 1 0 8 0 ucredpl 104 570 0 552 1 0 1 1 0 8 0 zombiepl 144 579 0 578 1 0 1 1 0 8 0 processpl 1232 629 0 578 5 0 5 5 0 8 0 procpl 664 967 0 911 7 0 7 7 0 8 1 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 872 0 840 24 12 12 19 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 548 0 0 35 0 35 35 0 8 0 bufpl 280 2931 0 108 202 0 202 202 0 8 0 anonpl 32 7417 0 0 60 0 60 60 0 246 0 amapchunkpl 152 14457 0 13999 29 0 29 29 0 158 6 amappl16 200 2486 0 2467 14 1 13 14 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 397 0 396 1 0 1 1 0 8 0 amappl13 176 132 0 122 1 0 1 1 0 8 0 amappl12 168 840 0 807 2 0 2 2 0 8 0 amappl11 160 11 0 11 1 1 0 1 0 8 0 amappl10 152 61 0 51 1 0 1 1 0 8 0 amappl9 144 261 0 261 1 1 0 1 0 8 0 amappl8 136 112 0 111 1 0 1 1 0 8 0 amappl7 128 157 0 145 1 0 1 1 0 8 0 amappl6 120 174 0 172 1 0 1 1 0 8 0 amappl5 112 87 0 79 1 0 1 1 0 8 0 amappl4 104 255 0 241 1 0 1 1 0 8 0 amappl3 96 2670 0 2561 5 1 4 4 0 8 0 amappl2 88 478 0 426 2 0 2 2 0 8 0 amappl1 80 9803 0 9236 14 0 14 14 0 8 0 amappl 88 4119 0 3962 5 0 5 5 0 92 0 uvmvnodes 80 106 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 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 613 0 578 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 613 0 578 1 0 1 1 0 8 0 vmmpekpl 168 6691 0 6649 3 0 3 3 0 8 0 vmmpepl 168 46328 0 44410 102 0 102 102 0 357 13 vmsppl 488 612 0 578 7 1 6 6 0 8 0 rwobjpl 80 15744 0 14828 25 0 25 25 0 8 0 pdppl 4096 1233 0 1156 107 26 81 97 0 8 4 pvpl 32 13798 0 0 113 1 112 112 0 265 0 pmappl 256 612 0 578 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 305 0 29 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83443ffe) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a9ee40,1,ffff80003c4167d8) at pool_do_get+0x5df pool_get(ffffffff83a9ee40,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffe9778,ffff80003c416a30,0,ffff80003c416980) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffe9778,ffff80003c416a30,ffff80003c416980) at sys_shmget+0x195 sys/kern/sysv_shm.c:484 syscall(ffff80003c416a30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c416a30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9086e07c650, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) 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(ffffffff8399a5c0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8399a5c0) at __mp_lock+0x199 sys/kern/kern_lock.c:173 syscall(ffff8000363c2c70) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff8000363c2c70) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e4cba34cfa0, count: 9 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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(ffffffff8399a5c0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8399a5c0) at __mp_lock+0x199 sys/kern/kern_lock.c:173 syscall(ffff8000363c2c70) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff8000363c2c70) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e4cba34cfa0, count: -6