panic: pool_do_get: shmpl free list modified: page 0xfffffd806c1e7000; item addr 0xfffffd806c1e79a0; offset 0x2c=0xdeaf4151 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 447705 75482 32767 0x10 0 1 syz-executor *194414 43905 32767 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830648a2) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8358afb0,1,ffff80002a117d88) at pool_do_get+0x5e6 pool_get(ffffffff8358afb0,1) at pool_get+0x141 shmget_allocate_segment(ffff8000ffff6a38,ffff80002a117fe0,0,ffff80002a117f30) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff6a38,ffff80002a117fe0,ffff80002a117f30) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80002a117fe0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a117fe0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35c1c6ef950, 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 0xfffffd806c1e7000; item addr 0xfffffd806c1e79a0; offset 0x2c=0xdeaf4151 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830648a2) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8358afb0,1,ffff80002a117d88) at pool_do_get+0x5e6 pool_get(ffffffff8358afb0,1) at pool_get+0x141 shmget_allocate_segment(ffff8000ffff6a38,ffff80002a117fe0,0,ffff80002a117f30) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff6a38,ffff80002a117fe0,ffff80002a117f30) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80002a117fe0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a117fe0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35c1c6ef950, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a117bd0 rbx 0xffffffff834d6d87 cpu_info_full_primary+0x2d87 rdx 0xffff8000011d4f80 rcx 0xffff8000ffff6a38 rax 0xffffffff834d5ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xee2976f30f4b3599 r11 0x4cffeb100b16fb6a r12 0xffffffff834d6b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff8225a955 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a117bc0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=194414 pid=43905 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff7458,0xffff8000ffff6cd0 process=0xffff8000fffefb08 user=0xffff80002a113000, vmspace=0xfffffd805a6d68a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75482 447705 61449 32767 7 0x10 syz-executor 75482 515494 61449 32767 3 0x4000090 lockf syz-executor 75482 155682 61449 32767 3 0x4000090 fsleep syz-executor 43905 390348 34302 32767 2 0x10 syz-executor *43905 194414 34302 32767 7 0x4000010 syz-executor 43905 511860 34302 32767 3 0x4000090 fsleep syz-executor 50750 241605 36383 32767 3 0x90 nanoslp syz-executor 50750 269563 36383 32767 3 0x4000090 kqread syz-executor 50750 287383 36383 32767 3 0x4000090 fsleep syz-executor 25156 271871 94043 32767 3 0x90 nanoslp syz-executor 25156 107444 94043 32767 3 0x4000090 msgwait syz-executor 25156 101939 94043 32767 3 0x4000090 fsleep syz-executor 17651 194199 14376 32767 3 0x90 nanoslp syz-executor 14376 225826 6501 0 3 0x82 wait syz-executor 36383 378848 47728 32767 3 0x90 nanoslp syz-executor 34302 206507 66924 32767 3 0x90 nanoslp syz-executor 79336 182950 77273 32767 3 0x90 wait syz-executor 28691 27701 89669 32767 3 0x10 biowait syz-executor 47446 369662 66033 32767 3 0x90 wait syz-executor 61449 482590 32506 32767 3 0x90 nanoslp syz-executor 66924 123163 6501 0 3 0x82 wait syz-executor 47728 105343 6501 0 3 0x82 wait syz-executor 89669 318727 6501 0 3 0x82 wait syz-executor 77273 132578 6501 0 3 0x82 wait syz-executor 66033 472874 6501 0 3 0x82 wait syz-executor 32506 342185 6501 0 3 0x82 wait syz-executor 94043 61596 44653 32767 3 0x90 nanoslp syz-executor 44653 402700 6501 0 3 0x82 wait syz-executor 47130 413976 0 0 3 0x14200 bored sosplice 6501 493270 92858 0 3 0x82 kqread syz-executor 92858 448682 41356 0 3 0x10008a sigsusp ksh 41356 134359 32041 0 3 0x98 kqread sshd-session 32041 26779 75397 0 3 0x92 kqread sshd-session 22391 441995 1 0 3 0x100083 ttyin getty 75397 174669 1 0 3 0x88 kqread sshd 6339 287380 79555 73 3 0x1100090 kqread syslogd 79555 144671 1 0 3 0x100082 sbwait syslogd 38898 308605 1 0 3 0x100080 kqread resolvd 22471 266584 94385 77 3 0x100092 kqread dhcpleased 49998 18778 94385 77 3 0x100092 kqread dhcpleased 94385 513875 1 0 3 0x80 kqread dhcpleased 28001 434658 0 0 3 0x14200 bored smr 95539 441139 0 0 3 0x14200 pgzero zerothread 22860 432875 0 0 3 0x14200 aiodoned aiodoned 49328 442259 0 0 3 0x14200 syncer update 99796 8873 0 0 3 0x14200 cleaner cleaner 78316 179768 0 0 3 0x14200 reaper reaper 84144 506286 0 0 3 0x14200 pgdaemon pagedaemon 9598 422454 0 0 3 0x14200 bored viomb 43916 407384 0 0 3 0x40014200 acpi0 acpi0 92273 231610 0 0 3 0x40014200 idle1 21181 150329 0 0 3 0x14200 bored softnet3 15252 278660 0 0 3 0x14200 bored softnet2 66438 354288 0 0 3 0x14200 bored softnet1 18850 463598 0 0 3 0x14200 bored softnet0 97216 334477 0 0 3 0x14200 bored systqmp 49835 125846 0 0 3 0x14200 bored systq 54846 142788 0 0 3 0x14200 tmoslp softclockmp 73703 11072 0 0 3 0x40014200 tmoslp softclock 46848 175416 0 0 3 0x40014200 idle0 1 155234 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 (0xffffffff8358afc0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_get+0x103 sys/kern/subr_pool.c:579 #4 shmget_allocate_segment+0x1a7 #5 sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 43905 (syz-executor) thread 0xffff8000ffff6a38 (194414) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8358af88) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff8358afc0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pool_get+0x103 sys/kern/subr_pool.c:579 #4 shmget_allocate_segment+0x1a7 #5 sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 28691 (syz-executor) thread 0xffff8000365fbc08 (27701) exclusive rrwlock inode r = 0 (0xfffffd805fc591a8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bc451b0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 10028K 10035K 166960K 11456 0 pcb 17 12K 12K 166960K 17 0 rtable 236 6K 7K 166960K 1965 0 pf 31 16K 16K 166960K 134 0 ifaddr 42 7K 7K 166960K 252 0 ifgroup 50 2K 2K 166960K 255 0 sysctl 3 0K 4K 166960K 4 0 counters 64 36K 36K 166960K 166 0 ioctlops 0 0K 2K 166960K 96 0 iov 0 0K 16K 166960K 92 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1457 92K 92K 166960K 2506 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 20 0 dirhash 15 2K 3K 166960K 36 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 25 93K 157K 166960K 1852 0 sigio 0 0K 0K 166960K 21 0 proc 61 91K 176K 166960K 2026 0 subproc 104 6K 12K 166960K 1040 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 181 0 in_multi 99 7K 7K 166960K 714 0 ether_multi 1 0K 0K 166960K 12 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 277 1235K 1235K 166960K 277 0 exec 0 0K 1K 166960K 1248 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 276 75K 131K 166960K 15313 0 UVM aobj 33 6K 6K 166960K 42 0 pinsyscall 46 92K 126K 166960K 4276 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 77 0 NDP 11 0K 2K 166960K 180 0 temp 73 6823K 6887K 166960K 26444 0 kqueue 14 22K 31K 166960K 223 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 120 224 0 218 1 0 1 1 0 8 0 rtentry 112 687 0 576 6 2 4 4 0 8 0 unpcb 144 1149 0 1131 13 7 6 6 0 8 5 syncache 336 30 0 30 6 5 1 1 0 8 1 tcpqe 32 10 0 10 6 5 1 1 0 8 1 tcpcb 808 601 0 592 16 11 5 11 0 8 3 arp 120 121 0 103 1 0 1 1 0 8 0 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 53 0 52 1 0 1 1 0 8 0 inpcb 336 1709 0 1693 23 16 7 10 0 8 4 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 191 0 166 1 0 1 1 0 8 0 kcovpl 48 80 0 72 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2778 0 2321 58 27 31 31 0 8 1 art_table 32 2779 0 2321 4 0 4 4 0 8 0 art_node 16 686 0 585 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 39 0 9 1 0 1 1 0 8 0 pool(0xffffffff8358afb0:shmpl): page inconsistency: page 0xfffffd806c1e7000; 4 on list, 30 missing, 35 items per page dirhash 1024 33 0 14 3 0 3 3 0 8 0 dino2pl 256 3039 0 1396 103 0 103 103 0 8 0 ffsino 272 3039 0 1396 111 1 110 110 0 8 0 nchpl 144 4415 0 2639 66 0 66 66 0 8 0 uvmvnodes 80 4088 0 0 84 0 84 84 0 8 0 vnodes 216 4088 0 0 228 0 228 228 0 8 0 namei 1024 20232 0 20232 10 9 1 2 0 8 1 percpumem 16 97 0 51 1 0 1 1 0 8 0 kstatmem 264 124 0 102 2 0 2 2 0 8 0 scxspl 216 36015 0 36014 16 13 3 8 1 8 2 plimitpl 152 480 0 454 2 0 2 2 0 8 0 sigapl 424 2002 0 1946 12 4 8 9 0 8 0 futexpl 64 12831 0 12827 4 3 1 1 0 8 0 knotepl 120 377 0 0 10 0 10 10 0 8 0 kqueuepl 216 574 0 564 13 8 5 5 0 8 4 pipepl 320 499 0 472 10 6 4 8 0 8 0 fdescpl 496 1983 0 1946 11 4 7 7 0 8 1 filepl 152 11253 0 10987 26 7 19 19 0 8 7 lockfpl 104 268 0 264 1 0 1 1 0 8 0 lockfspl 48 88 0 85 1 0 1 1 0 8 0 sessionpl 144 95 0 79 1 0 1 1 0 8 0 pgrppl 48 191 0 167 1 0 1 1 0 8 0 ucredpl 104 1917 0 1898 1 0 1 1 0 8 0 zombiepl 144 1949 0 1946 1 0 1 1 0 8 0 processpl 1160 2002 0 1946 7 1 6 6 0 8 1 procpl 648 3483 0 3419 8 1 7 7 0 8 1 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 10 0 10 3 2 1 1 0 8 1 sockpl 664 3099 0 3059 38 26 12 16 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 244 0 0 31 0 31 31 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 467 0 0 28 0 28 28 0 8 0 bufpl 280 7820 0 1456 455 0 455 455 0 8 0 anonpl 24 330044 0 322983 78 7 71 77 0 185 10 amapchunkpl 152 50938 0 50231 42 2 40 40 0 158 8 amappl16 200 6734 0 6592 43 21 22 22 0 8 8 amappl15 192 7 0 7 3 3 0 1 0 8 0 amappl14 184 247 0 237 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 3437 0 3400 5 3 2 3 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 145 0 144 2 1 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 217 0 207 1 0 1 1 0 8 0 amappl6 120 665 0 663 1 0 1 1 0 8 0 amappl5 112 354 0 345 1 0 1 1 0 8 0 amappl4 104 523 0 507 1 0 1 1 0 8 0 amappl3 96 9420 0 9281 4 0 4 4 0 8 0 amappl2 88 1597 0 1535 2 0 2 2 0 8 0 amappl1 80 21105 0 20564 16 3 13 16 0 8 0 amappl 88 14409 0 14189 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 41 0 9 1 0 1 1 0 8 0 uaddrrnd 24 1984 0 1947 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1984 0 1947 1 0 1 1 0 8 0 vmmpekpl 168 20160 0 20092 4 0 4 4 0 8 0 vmmpepl 168 137106 0 134953 136 25 111 122 0 357 10 vmsppl 440 1983 0 1947 6 0 6 6 0 8 0 rwobjpl 56 46275 0 41157 76 2 74 74 0 8 1 pdppl 4096 3975 0 3894 269 184 85 113 0 8 4 pvpl 32 34083 0 0 276 1 275 275 0 265 0 pmappl 248 1983 0 1947 6 2 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 666 0 255 13 0 13 13 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:437 panic(ffffffff830648a2) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff8358afb0,1,ffff80002a117d88) at pool_do_get+0x5e6 pool_get(ffffffff8358afb0,1) at pool_get+0x141 shmget_allocate_segment(ffff8000ffff6a38,ffff80002a117fe0,0,ffff80002a117f30) at shmget_allocate_segment+0x1a7 sys_shmget(ffff8000ffff6a38,ffff80002a117fe0,ffff80002a117f30) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480 syscall(ffff80002a117fe0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a117fe0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35c1c6ef950, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_release_all(ffffffff8358ad80) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 tsleep(ffffffff835622a0,120,ffffffff8304a9ea,2) at tsleep+0x1fa sys_nanosleep(ffff8000ffff7458,ffff80002a100870,ffff80002a1007c0) at sys_nanosleep+0x28a sys/kern/kern_time.c:301 syscall(ffff80002a100870) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a100870) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7802218a6000, count: 7 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_release_all(ffffffff8358ad80) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 tsleep(ffffffff835622a0,120,ffffffff8304a9ea,2) at tsleep+0x1fa sys_nanosleep(ffff8000ffff7458,ffff80002a100870,ffff80002a1007c0) at sys_nanosleep+0x28a sys/kern/kern_time.c:301 syscall(ffff80002a100870) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a100870) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7802218a6000, count: -8