panic: pool_do_get: shmpl free list modified: page 0xfffffd806913c000; item addr 0xfffffd806913c4d0; offset 0x40=0x687355c6 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *144339 89569 32767 0x10 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d07a1) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838e6960,1,ffff80003c461cd8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838e6960,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a27f728,ffff80003c461f30,4,ffff80003c461e80) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a27f728,ffff80003c461f30,ffff80003c461e80) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c461f30) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461f30) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa218dee9e50, 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 0xfffffd806913c000; item addr 0xfffffd806913c4d0; offset 0x40=0x687355c6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d07a1) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838e6960,1,ffff80003c461cd8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838e6960,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a27f728,ffff80003c461f30,4,ffff80003c461e80) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a27f728,ffff80003c461f30,ffff80003c461e80) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c461f30) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461f30) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa218dee9e50, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c461b10 rbx 0xffff8000299dedd7 rdx 0xffff80000142b740 rcx 0xffff80002a27f728 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x824d61afb6d60743 r11 0xf26a9e92d09aaba2 r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff82b5bf55 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c461b00 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=144339 pid=89569 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=0xffff80002a27ef78,0xffff80002a27ea68 process=0xffff80003ac1fa40 user=0xffff80003c45c000, vmspace=0xfffffd806c351b68 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10948 354962 62901 0 3 0x82 wait syz-executor 89569 255910 867 32767 2 0x10 syz-executor *89569 144339 867 32767 7 0x4000010 syz-executor 35890 427755 62901 0 2 0x2 syz-executor 60618 472863 73320 32767 2 0x10 syz-executor 60618 344599 73320 32767 3 0x4000090 ttyretype syz-executor 60618 289600 73320 32767 3 0x4000090 ttyretype syz-executor 60618 255888 73320 32767 3 0x4000090 fsleep syz-executor 82395 310909 77191 32767 2 0x10 syz-executor 82395 116704 77191 32767 3 0x4000090 fsleep syz-executor 87937 286261 92551 32767 3 0x90 nanoslp syz-executor 87937 269124 92551 32767 3 0x4000090 fsleep syz-executor 87937 409246 92551 32767 3 0x4000090 fsleep syz-executor 87937 21359 92551 32767 3 0x4000090 ttyout syz-executor 35500 404769 0 0 3 0x14200 bored sosplice 867 365585 22699 32767 3 0x90 nanoslp syz-executor 61287 286193 95699 32767 3 0x10 biowait syz-executor 77191 322185 30398 32767 3 0x90 nanoslp syz-executor 73320 499333 81177 32767 3 0x90 nanoslp syz-executor 51325 204325 67786 32767 3 0x90 nanoslp syz-executor 92551 393895 10236 32767 3 0x90 nanoslp syz-executor 95699 63098 62901 0 3 0x82 wait syz-executor 81177 431305 62901 0 3 0x82 wait syz-executor 30398 437876 62901 0 3 0x82 wait syz-executor 10236 352447 62901 0 3 0x82 wait syz-executor 22699 261416 62901 0 3 0x82 wait syz-executor 67786 9200 62901 0 3 0x82 wait syz-executor 62901 6480 21936 0 3 0x82 kqread syz-executor 21936 189784 18764 0 3 0x10008a sigsusp ksh 18764 260226 50429 0 3 0x98 kqread sshd-session 50429 294573 11842 0 3 0x92 kqread sshd-session 89889 228855 1 0 3 0x100083 ttyin getty 11842 492375 1 0 3 0x88 kqread sshd 61286 414928 29353 73 3 0x1100090 kqread syslogd 29353 117731 1 0 3 0x100082 sbwait syslogd 78839 76783 1 0 3 0x100080 kqread resolvd 83305 245142 36629 77 3 0x100092 kqread dhcpleased 86813 229136 36629 77 3 0x100092 kqread dhcpleased 36629 55284 1 0 3 0x80 kqread dhcpleased 44073 154107 0 0 3 0x14200 bored smr 63579 7308 0 0 2 0x14200 zerothread 19162 377180 0 0 3 0x14200 aiodoned aiodoned 15836 260378 0 0 3 0x14200 syncer update 24088 379410 0 0 3 0x14200 cleaner cleaner 65369 70498 0 0 3 0x14200 reaper reaper 57352 236249 0 0 3 0x14200 pgdaemon pagedaemon 99478 115414 0 0 3 0x14200 bored viomb 98896 65643 0 0 3 0x40014200 acpi0 acpi0 63981 243688 0 0 3 0x40014200 idle1 98967 275338 0 0 3 0x14200 bored softnet3 39396 54781 0 0 3 0x14200 bored softnet2 25687 442911 0 0 3 0x14200 bored softnet1 6755 523470 0 0 3 0x14200 bored softnet0 38534 219806 0 0 3 0x14200 smrbar systqmp 56844 214724 0 0 3 0x14200 bored systq 99725 30555 0 0 3 0x14200 tmoslp softclockmp 78572 288856 0 0 3 0x40014200 tmoslp softclock 56875 173398 0 0 3 0x40014200 idle0 1 339889 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839db730) #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 uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] #3 uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 #4 uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 #5 uvm_anfree_list+0x1e3 sys/uvm/uvm_anon.c:120 #6 amap_wipeout+0x248 sys/uvm/uvm_amap.c:486 #7 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #8 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 #9 exit1+0x723 sys/kern/kern_exit.c:260 #10 sys_exit+0x1a sys/kern/kern_exit.c:-1 #11 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #12 Xsyscall+0x128 CPU 1: exclusive mutex shmpl r = 0 (0xffffffff838e6978) #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 89569 (syz-executor) thread 0xffff80002a27f728 (144339) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83997568) #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 (0xffffffff838e6978) #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 61287 (syz-executor) thread 0xffff8000387fea60 (286193) exclusive rrwlock inode r = 0 (0xfffffd806fa57528) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 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+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:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c729318) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #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:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 38534 (systqmp) thread 0xffff8000ffffe290 (219806) shared rwlock systqmp r = 0 (0xffffffff8381bea8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10184 10951K 10967K 166960K 11268 0 pcb 17 12K 12K 166960K 17 0 rtable 197 5K 7K 166960K 364 0 pf 27 16K 16K 166960K 31 0 ifaddr 34 6K 7K 166960K 44 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 4 1K 9K 166960K 8 0 counters 64 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 32 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1533 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 3K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 21 77K 125K 166960K 461 0 sigio 0 0K 0K 166960K 5 0 proc 58 79K 127K 166960K 497 0 subproc 70 4K 4K 166960K 241 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 32 0 in_multi 77 5K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 2 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 382 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 221 143K 169K 166960K 5330 0 UVM aobj 11 2K 3K 166960K 13 0 pinsyscall 42 84K 114K 166960K 1481 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 7 0 NDP 9 0K 2K 166960K 27 0 temp 45 8676K 8756K 166960K 5074 0 kqueue 14 22K 24K 166960K 86 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 49 0 46 1 0 1 1 0 8 0 rtentry 176 113 0 23 6 1 5 6 0 8 0 unpcb 144 193 0 178 2 1 1 2 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 86 0 79 2 1 1 2 0 8 0 arp 128 19 0 4 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 1 1 0 1 1 0 8 0 inpcb 328 239 0 226 2 0 2 2 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 144 25 0 6 1 0 1 1 0 8 0 kcovpl 48 26 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 463 0 88 30 3 27 29 0 8 1 art_table 40 464 0 88 5 0 5 5 0 8 0 art_node 32 113 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 pool(0xffffffff838e6960:shmpl): page inconsistency: page 0xfffffd806913c000; 26 on list, 8 missing, 35 items per page dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 1951 0 420 96 0 96 96 0 8 0 ffsino 288 1951 0 420 110 0 110 110 0 8 0 nchpl 144 2512 0 815 63 0 63 63 0 8 0 uvmvnodes 80 2201 0 0 45 0 45 45 0 8 0 vnodes 216 2201 0 0 123 0 123 123 0 8 0 namei 1024 8017 0 8016 2 1 1 2 0 8 0 percpumem 16 49 0 2 1 0 1 1 0 8 0 kstatmem 264 24 0 4 2 0 2 2 0 8 0 scxspl 216 8384 0 8383 10 4 6 8 1 8 5 plimitpl 152 106 0 80 2 0 2 2 0 8 0 sigapl 424 701 0 648 8 1 7 8 0 8 0 knotepl 120 307 0 0 10 0 10 10 0 8 0 kqueuepl 224 108 0 98 1 0 1 1 0 8 0 pipepl 336 184 0 155 3 0 3 3 0 8 0 fdescpl 520 682 0 649 4 0 4 4 0 8 1 filepl 160 3094 0 2877 11 1 10 11 0 8 0 lockfpl 104 52 0 50 1 0 1 1 0 8 0 lockfspl 48 22 0 20 1 0 1 1 0 8 0 sessionpl 144 42 0 27 1 0 1 1 0 8 0 pgrppl 48 73 0 50 1 0 1 1 0 8 0 ucredpl 104 312 0 295 1 0 1 1 0 8 0 zombiepl 144 650 0 648 1 0 1 1 0 8 0 processpl 1240 701 0 648 5 0 5 5 0 8 0 procpl 656 1121 0 1060 7 1 6 7 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 728 483 0 452 6 2 4 6 0 8 0 mcl64k 65536 2 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 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 263 0 0 17 0 17 17 0 8 0 bufpl 280 2713 0 117 186 0 186 186 0 8 0 anonpl 32 7380 0 0 60 0 60 60 0 246 0 amapchunkpl 152 16555 0 16080 30 3 27 30 0 158 6 amappl16 200 2430 0 2409 18 8 10 14 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 135 0 125 1 0 1 1 0 8 0 amappl13 176 17 0 17 1 1 0 1 0 8 0 amappl12 168 1283 0 1250 2 0 2 2 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 20 0 19 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 98 0 88 1 0 1 1 0 8 0 amappl6 120 175 0 171 1 0 1 1 0 8 0 amappl5 112 114 0 106 1 0 1 1 0 8 0 amappl4 104 289 0 273 1 0 1 1 0 8 0 amappl3 96 2975 0 2863 4 0 4 4 0 8 0 amappl2 88 629 0 572 2 0 2 2 0 8 0 amappl1 80 9678 0 9119 16 0 16 16 0 8 0 amappl 88 4613 0 4454 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 682 0 649 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 682 0 649 1 0 1 1 0 8 0 vmmpekpl 168 7515 0 7472 3 0 3 3 0 8 0 vmmpepl 168 49593 0 47663 107 4 103 107 0 357 12 vmsppl 480 681 0 648 7 2 5 6 0 8 0 rwobjpl 72 18067 0 15030 58 1 57 57 0 8 1 pdppl 4096 1371 0 1296 111 30 81 97 0 8 6 pvpl 32 14419 0 0 117 0 117 117 0 265 0 pmappl 256 681 0 648 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 405 0 38 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83863ff0) 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(ffffffff83997360) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83997360) at __mp_lock+0x192 sys/kern/kern_lock.c:165 exit1(ffff80003ac1a548,43,0,1) at exit1+0x728 sys/kern/kern_exit.c:260 sys_exit(ffff80003ac1a548,ffff80002f7d9ec0,ffff80002f7d9e10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f7d9ec0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f7d9ec0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77f1dfeeafa0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83863ff0) 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(ffffffff83997360) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83997360) at __mp_lock+0x192 sys/kern/kern_lock.c:165 exit1(ffff80003ac1a548,43,0,1) at exit1+0x728 sys/kern/kern_exit.c:260 sys_exit(ffff80003ac1a548,ffff80002f7d9ec0,ffff80002f7d9e10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f7d9ec0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f7d9ec0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77f1dfeeafa0, count: -8 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(ffffffff833d07a1) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838e6960,1,ffff80003c461cd8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838e6960,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a27f728,ffff80003c461f30,4,ffff80003c461e80) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a27f728,ffff80003c461f30,ffff80003c461e80) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c461f30) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461f30) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa218dee9e50, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d07a1) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff838e6960,1,ffff80003c461cd8) at pool_do_get+0x5ea sys/kern/subr_pool.c:-1 pool_get(ffffffff838e6960,1) at pool_get+0x149 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80002a27f728,ffff80003c461f30,4,ffff80003c461e80) at shmget_allocate_segment+0x1a7 sys/kern/sysv_shm.c:-1 sys_shmget(ffff80002a27f728,ffff80003c461f30,ffff80003c461e80) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c461f30) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461f30) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa218dee9e50, count: -8