panic: pool_do_get: shmpl free list modified: page 0xfffffd8060262000; item addr 0xfffffd8060262930; offset 0x40=0x67ae5354 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *312692 55825 32767 0x10 0x4000000 0 syz-executor 145998 95097 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a8b32) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf400,1,ffff80003c54a308) at pool_do_get+0x5da pool_get(ffffffff839bf400,1) at pool_get+0x149 shmget_allocate_segment(ffff80003c50bc68,ffff80003c54a560,1af,ffff80003c54a4b0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff80003c50bc68,ffff80003c54a560,ffff80003c54a4b0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c54a560) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c54a560) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaad474ac310, 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 0xfffffd8060262000; item addr 0xfffffd8060262930; offset 0x40=0x67ae5354 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a8b32) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf400,1,ffff80003c54a308) at pool_do_get+0x5da pool_get(ffffffff839bf400,1) at pool_get+0x149 shmget_allocate_segment(ffff80003c50bc68,ffff80003c54a560,1af,ffff80003c54a4b0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff80003c50bc68,ffff80003c54a560,ffff80003c54a4b0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c54a560) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c54a560) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaad474ac310, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c54a140 rbx 0xffffffff83864dc7 cpu_info_full_primary+0x2dc7 rdx 0xffff800001423e40 rcx 0xffff80003c50bc68 rax 0xffffffff83863ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa0118b46c0e14929 r11 0x5e862fc2108d39cd r12 0xffffffff83864bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff82c3c5a5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c54a130 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=312692 pid=55825 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c50a558,0xffffffff83941688 process=0xffff80003c5026e0 user=0xffff80003c545000, vmspace=0xfffffd8068c28910 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55825 396620 95097 32767 2 0x10 syz-executor *55825 312692 95097 32767 7 0x4000010 syz-executor 11055 189536 98530 32767 3 0x90 nanoslp syz-executor 11055 225702 98530 32767 3 0x4000090 fsleep syz-executor 11055 251913 98530 32767 3 0x4000090 fsleep syz-executor 11055 276873 98530 32767 3 0x4000090 fsleep syz-executor 55275 346536 4693 32767 2 0x10 syz-executor 55275 85989 4693 32767 3 0x4000090 fsleep syz-executor 20422 425448 73833 32767 3 0x90 nanoslp syz-executor 20422 491425 73833 32767 3 0x4000090 kqread syz-executor 20422 244262 73833 32767 3 0x4000090 fsleep syz-executor 37943 122154 36176 32767 2 0x10 syz-executor 37943 179037 36176 32767 3 0x4000090 pipewr syz-executor 37943 106627 36176 32767 3 0x4000090 pipewr syz-executor 74331 5367 43756 32767 2 0x10 syz-executor 74331 351497 43756 32767 3 0x4000090 fsleep syz-executor 13105 469365 0 0 3 0x14200 bored sosplice 4693 68504 83523 32767 3 0x90 nanoslp syz-executor 43756 99287 56805 32767 3 0x90 nanoslp syz-executor 73833 87056 62442 32767 3 0x90 nanoslp syz-executor 36176 121751 85292 32767 2 0x10 syz-executor 95097 145998 1758 32767 7 0x10 syz-executor 22844 365504 3601 32767 3 0x10 biowait syz-executor 42883 55070 9643 32767 3 0x90 nanoslp syz-executor 98530 169906 65068 32767 3 0x90 nanoslp syz-executor 3601 302980 21314 0 3 0x82 wait syz-executor 62442 227359 21314 0 3 0x82 wait syz-executor 65068 133521 21314 0 3 0x82 wait syz-executor 85292 86360 21314 0 3 0x82 wait syz-executor 83523 112697 21314 0 3 0x82 wait syz-executor 1758 385430 21314 0 3 0x82 wait syz-executor 56805 418091 21314 0 3 0x82 wait syz-executor 9643 377516 21314 0 3 0x82 wait syz-executor 21314 244802 49451 0 3 0x82 kqread syz-executor 49451 114619 77189 0 3 0x10008a sigsusp ksh 77189 53387 11383 0 3 0x98 kqread sshd-session 11383 15945 36625 0 3 0x92 kqread sshd-session 55736 353214 1 0 3 0x100083 ttyin getty 36625 125343 1 0 3 0x88 kqread sshd 20948 299683 72786 73 3 0x1100090 kqread syslogd 72786 56830 1 0 3 0x100082 sbwait syslogd 65180 424262 1 0 3 0x100080 kqread resolvd 257 322681 79990 77 3 0x100092 kqread dhcpleased 41097 110985 79990 77 3 0x100092 kqread dhcpleased 79990 161900 1 0 3 0x80 kqread dhcpleased 40660 398595 0 0 3 0x14200 bored smr 45004 106211 0 0 2 0x14200 zerothread 86275 38212 0 0 3 0x14200 aiodoned aiodoned 56917 152633 0 0 3 0x14200 syncer update 32196 34233 0 0 3 0x14200 cleaner cleaner 30638 342814 0 0 3 0x14200 reaper reaper 76072 375627 0 0 3 0x14200 pgdaemon pagedaemon 6531 347906 0 0 3 0x14200 bored viomb 454 177459 0 0 3 0x40014200 acpi0 acpi0 61591 166445 0 0 3 0x40014200 idle1 32868 264195 0 0 3 0x14200 bored softnet3 99567 87771 0 0 3 0x14200 bored softnet2 10198 397750 0 0 3 0x14200 bored softnet1 83137 483211 0 0 3 0x14200 bored softnet0 97585 229793 0 0 3 0x14200 bored systqmp 79868 371672 0 0 3 0x14200 bored systq 86450 516745 0 0 3 0x14200 tmoslp softclockmp 14472 136071 0 0 3 0x40014200 tmoslp softclock 35637 89415 0 0 3 0x40014200 idle0 1 518845 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 (0xffffffff839bf418) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_get+0x10b sys/kern/subr_pool.c:583 #4 shmget_allocate_segment+0x1a7 #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:577 #7 Xsyscall+0x128 Process 55825 (syz-executor) thread 0xffff80003c50bc68 (312692) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838e8818) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff839bf418) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_get+0x10b sys/kern/subr_pool.c:583 #4 shmget_allocate_segment+0x1a7 #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:577 #7 Xsyscall+0x128 Process 95097 (syz-executor) thread 0xffff80002a366540 (145998) exclusive rwlock amaplk r = 0 (0xfffffd806d0fae20) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvm_fault_check+0x54c sys/uvm/uvm_fault.c:846 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c17fbc8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1864 #3 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 Process 22844 (syz-executor) thread 0xffff80002a3662b0 (365504) exclusive rrwlock inode r = 0 (0xfffffd806234ce00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #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:3111 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ca25420) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #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:3096 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 10954K 10966K 166960K 11268 0 pcb 17 12K 12K 166960K 17 0 rtable 236 6K 6K 166960K 380 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 29 0 iov 0 0K 8K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1333 84K 84K 166960K 1355 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 76 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 25 93K 129K 166960K 241 0 sigio 0 0K 0K 166960K 10 0 proc 58 79K 140K 166960K 487 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 56 0 in_multi 99 7K 7K 166960K 106 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 358 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 246 73K 82K 166960K 3627 0 UVM aobj 8 3K 3K 166960K 9 0 pinsyscall 46 92K 111K 166960K 1266 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 11 0K 2K 166960K 27 0 temp 40 8639K 8705K 166960K 4224 0 kqueue 14 22K 28K 166960K 41 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 48 0 45 1 0 1 1 0 8 0 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 144 153 0 136 3 0 3 3 0 8 2 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 41 0 35 1 0 1 1 0 8 0 arp 120 18 0 0 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 376 218 0 208 8 0 8 8 0 8 6 nd6 136 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 256 454 0 0 29 0 29 29 0 8 0 art_table 32 455 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 74 0 64 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 pool(0xffffffff839bf400:shmpl): page inconsistency: page 0xfffffd8060262000; 29 on list, 5 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1690 0 185 95 0 95 95 0 8 0 ffsino 280 1690 0 185 108 0 108 108 0 8 0 nchpl 144 2057 0 383 63 0 63 63 0 8 0 uvmvnodes 80 1771 0 0 37 0 37 37 0 8 0 vnodes 216 1771 0 0 99 0 99 99 0 8 0 namei 1024 6244 0 6243 2 0 2 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6554 0 6553 3 2 1 2 1 8 0 plimitpl 152 58 0 34 2 0 2 2 0 8 1 sigapl 424 522 0 466 9 1 8 8 0 8 0 futexpl 64 1580 0 1574 1 0 1 1 0 8 0 knotepl 120 566 0 0 18 0 18 18 0 8 0 kqueuepl 216 47 0 35 1 0 1 1 0 8 0 pipepl 328 114 0 85 3 0 3 3 0 8 0 fdescpl 504 503 0 466 6 0 6 6 0 8 0 filepl 152 2085 0 1864 14 0 14 14 0 8 5 lockfpl 104 59 0 57 1 0 1 1 0 8 0 lockfspl 48 22 0 20 1 0 1 1 0 8 0 sessionpl 144 21 0 5 1 0 1 1 0 8 0 pgrppl 48 30 0 6 1 0 1 1 0 8 0 ucredpl 104 249 0 230 1 0 1 1 0 8 0 zombiepl 144 467 0 466 1 0 1 1 0 8 0 processpl 1168 522 0 466 5 0 5 5 0 8 0 procpl 656 698 0 632 8 1 7 7 0 8 1 sockpl 688 420 0 390 15 0 15 15 0 8 11 mcl8k 8192 3 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 3 0 0 1 0 1 1 0 8 0 mbufpl 256 207 0 0 13 0 13 13 0 8 0 bufpl 280 2433 0 124 165 0 165 165 0 8 0 anonpl 24 109082 0 105764 33 0 33 33 0 184 11 amapchunkpl 152 11260 0 10686 30 0 30 30 0 158 4 amappl16 200 2123 0 2100 5 2 3 5 0 8 1 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 104 0 94 1 0 1 1 0 8 0 amappl13 176 76 0 76 1 1 0 1 0 8 0 amappl12 168 1113 0 1076 2 0 2 2 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 7 0 5 1 0 1 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 92 0 82 1 0 1 1 0 8 0 amappl6 120 178 0 174 1 0 1 1 0 8 0 amappl5 112 125 0 118 1 0 1 1 0 8 0 amappl4 104 284 0 270 1 0 1 1 0 8 0 amappl3 96 1883 0 1749 4 0 4 4 0 8 0 amappl2 88 611 0 557 2 0 2 2 0 8 0 amappl1 80 7801 0 7258 13 0 13 13 0 8 0 amappl 88 3282 0 3083 6 0 6 6 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 8 0 1 1 0 1 1 0 8 0 uaddrrnd 24 503 0 466 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 503 0 466 1 0 1 1 0 8 0 vmmpekpl 168 5451 0 5410 2 0 2 2 0 8 0 vmmpepl 168 37051 0 35050 91 0 91 91 0 357 1 vmsppl 456 502 0 466 6 0 6 6 0 8 0 rwobjpl 64 15128 0 12504 43 0 43 43 0 8 0 pdppl 4096 1014 0 932 120 36 84 100 0 8 2 pvpl 32 12768 0 0 103 0 103 103 0 265 0 pmappl 248 502 0 466 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 298 0 38 8 0 8 8 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(ffffffff833a8b32) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839bf400,1,ffff80003c54a308) at pool_do_get+0x5da pool_get(ffffffff839bf400,1) at pool_get+0x149 shmget_allocate_segment(ffff80003c50bc68,ffff80003c54a560,1af,ffff80003c54a4b0) at shmget_allocate_segment+0x1a7 sys_shmget(ffff80003c50bc68,ffff80003c54a560,ffff80003c54a4b0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:482 syscall(ffff80003c54a560) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c54a560) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaad474ac310, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029aabff0) 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(ffffffff838e8610) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838e8610) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff8000378b60f0) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000378b60f0) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77fa4fd92830, count: 9 ddb{1}> trace x86_ipi_db(ffff800029aabff0) 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(ffffffff838e8610) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838e8610) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff8000378b60f0) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000378b60f0) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77fa4fd92830, count: -6