panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 264396 68550 0 0x2 0x4000000 1 syz-fuzzer *401601 21513 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240e307) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828f8078,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3210,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3210) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8290b140) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8290b140) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff826f6600) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: 5 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 acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240e307) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828f8078,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3210,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3210) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8290b140) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8290b140) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff826f6600) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da2f80 rbx 0xffff800020da3030 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81443d9f kprintf+0x16f r9 0x1 r10 0x2 r11 0x426447dea785fe65 r12 0x3000000008 r13 0xffff800020da2f90 r14 0x100 r15 0x1 rip 0xffffffff81a17dc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da2f70 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (systqmp) pid=401601 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d889c0,0xffff800020d884f0 process=0xffff800020d8a3d8 user=0xffff800020d9e000, vmspace=0xffffffff8291d2d8 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55538 395040 55189 0 2 0x480 syz-executor.0 55538 55531 55189 0 3 0x4000080 netcon syz-executor.0 55538 370181 55189 0 3 0x4000080 netcon syz-executor.0 55538 2230 55189 0 3 0x4000080 fsleep syz-executor.0 36161 247176 0 0 3 0x14280 nfsidl nfsio 20789 457673 0 0 3 0x14280 nfsidl nfsio 41949 454342 0 0 3 0x14280 nfsidl nfsio 95444 70778 0 0 3 0x14280 nfsidl nfsio 13277 404467 0 0 3 0x14280 nfsidl nfsio 30865 340655 0 0 3 0x14280 nfsidl nfsio 14460 104453 0 0 3 0x14280 nfsidl nfsio 65950 415873 0 0 3 0x14280 nfsidl nfsio 80244 204098 0 0 3 0x14280 nfsidl nfsio 67904 181209 0 0 3 0x14280 nfsidl nfsio 46857 226545 0 0 3 0x14280 nfsidl nfsio 51812 490844 0 0 3 0x14280 nfsidl nfsio 35156 23208 0 0 3 0x14280 nfsidl nfsio 38166 315076 0 0 3 0x14280 nfsidl nfsio 32319 163856 0 0 3 0x14280 nfsidl nfsio 86429 297457 0 0 3 0x14280 nfsidl nfsio 62948 120732 0 0 3 0x14280 nfsidl nfsio 49526 17419 0 0 3 0x14280 nfsidl nfsio 76264 448721 0 0 3 0x14280 nfsidl nfsio 61948 417245 0 0 3 0x14280 nfsidl nfsio 55189 163579 68550 0 3 0x82 nanosleep syz-executor.0 35715 386138 68550 0 3 0x82 piperd syz-executor.1 72383 284480 0 0 3 0x14200 bored sosplice 68550 357493 13716 0 3 0x82 thrsleep syz-fuzzer 68550 264396 13716 0 7 0x4000002 syz-fuzzer 68550 213047 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 391199 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 498434 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 236624 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 251355 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 21390 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 206271 13716 0 3 0x4000082 thrsleep syz-fuzzer 68550 273316 13716 0 3 0x4000082 kqread syz-fuzzer 68550 250258 13716 0 3 0x4000082 thrsleep syz-fuzzer 13716 179121 14930 0 3 0x10008a pause ksh 14930 250247 86165 0 3 0x92 select sshd 35227 475164 1 0 3 0x100083 ttyin getty 86165 284190 1 0 3 0x80 select sshd 14380 75749 76410 74 3 0x100092 bpf pflogd 76410 76503 1 0 3 0x80 netio pflogd 70571 45554 98586 73 3 0x100090 kqread syslogd 98586 235633 1 0 3 0x100082 netio syslogd 10706 108503 1 77 3 0x100090 poll dhclient 14716 304762 1 0 3 0x80 poll dhclient 1749 30608 0 0 3 0x14200 bored smr 14836 499734 0 0 3 0x14200 pgzero zerothread 99594 58531 0 0 3 0x14200 aiodoned aiodoned 20282 101392 0 0 3 0x14200 syncer update 26017 19643 0 0 3 0x14200 cleaner cleaner 55788 305742 0 0 3 0x14200 reaper reaper 32833 130924 0 0 3 0x14200 pgdaemon pagedaemon 93709 383131 0 0 3 0x14200 bored crynlk 88376 461854 0 0 3 0x14200 bored crypto 31606 362331 0 0 3 0x40014200 acpi0 acpi0 89425 295033 0 0 3 0x40014200 idle1 49129 181184 0 0 3 0x14200 bored softnet *21513 401601 0 0 7 0x14200 systqmp 88675 250514 0 0 3 0x14200 bored systq 71518 153066 0 0 3 0x40014200 bored softclock 58011 30592 0 0 3 0x40014200 idle0 1 418154 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff8290b150) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_cache_gc+0x12d pl_enter sys/kern/subr_pool.c:104 [inline] #3 pool_cache_gc+0x12d pool_cache_list_put sys/kern/subr_pool.c:1968 [inline] #3 pool_cache_gc+0x12d sys/kern/subr_pool.c:2025 #4 pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 #5 taskq_thread+0xec sys/kern/kern_task.c:437 #6 proc_trampoline+0x1c Process 21513 (systqmp) thread 0xffff800020d88750 (401601) shared rwlock pools r = 0 (0xffffffff826ec830) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pool_gc_pages+0x21 sys/kern/subr_pool.c:1555 #2 taskq_thread+0xec sys/kern/kern_task.c:437 #3 proc_trampoline+0x1c shared rwlock systqmp r = 0 (0xffffffff826f6670) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c exclusive mutex mbufpl r = 0 (0xffffffff8290b150) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_cache_gc+0x12d pl_enter sys/kern/subr_pool.c:104 [inline] #3 pool_cache_gc+0x12d pool_cache_list_put sys/kern/subr_pool.c:1968 [inline] #3 pool_cache_gc+0x12d sys/kern/subr_pool.c:2025 #4 pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 #5 taskq_thread+0xec sys/kern/kern_task.c:437 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9549 6428K 6815K 78643K 11210 0 pcb 13 8K 8K 78643K 97 0 rtable 123 7K 8K 78643K 602 0 ifaddr 101 19K 19K 78643K 197 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1568 0 iov 0 0K 16K 78643K 93 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1866 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 602 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1215 0 sigio 0 0K 0K 78643K 10 0 proc 63 63K 95K 78643K 577 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 197 0 in_multi 69 3K 3K 78643K 172 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 270 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 135 23K 25K 78643K 4517 0 UVM aobj 19 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 100 0 NDP 16 0K 0K 78643K 36 0 temp 140 3866K 3931K 78643K 7964 0 kqueue 3 4K 9K 78643K 26 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 15 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 56 0 54 1 0 1 1 0 8 0 rtentry 112 97 0 54 2 0 2 2 0 8 0 unpcb 120 1239 0 1229 1 0 1 1 0 8 0 syncache 264 10 0 10 4 3 1 1 0 8 1 tcpqe 32 584 0 584 2 2 0 1 0 8 0 tcpcb 544 710 0 704 2 1 1 2 0 8 0 inpcb 296 1282 0 1273 5 3 2 2 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 20 0 17 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 5 0 4 2 1 1 1 0 482 0 pffrnode 88 5 0 4 2 1 1 1 0 8 0 pffrent 40 53 0 52 2 1 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 94 0 85 4 3 1 1 0 8 0 pfstitem 24 41 0 33 1 0 1 1 0 8 0 pfstkey 112 41 0 33 1 0 1 1 0 8 0 pfstate 328 41 0 33 3 0 3 3 0 8 0 pfrule 1360 36 0 26 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 397 0 202 13 0 13 13 0 8 0 art_table 32 399 0 202 2 0 2 2 0 8 0 art_node 16 96 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 35 0 18 1 0 1 1 0 8 0 semapl 112 600 0 590 1 0 1 1 0 8 0 shmpl 112 18 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3605 0 2201 89 0 89 89 0 8 0 ffsino 272 3605 0 2201 94 0 94 94 0 8 0 nchpl 144 5284 0 3688 60 0 60 60 0 8 0 uvmvnodes 72 3804 0 0 70 0 70 70 0 8 0 vnodes 208 3804 0 0 201 0 201 201 0 8 0 namei 1024 14262 0 14262 3 2 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vmpool 560 6 0 6 3 2 1 1 0 8 1 pfiaddrpl 120 30 0 24 6 5 1 1 0 8 0 scxspl 192 15091 0 15091 13 11 2 7 0 8 2 plimitpl 152 44 0 36 1 0 1 1 0 8 0 sigapl 424 1446 0 1394 7 1 6 7 0 8 0 futexpl 56 15608 0 15607 3 2 1 1 0 8 0 knotepl 112 113 0 94 1 0 1 1 0 8 0 kqueuepl 144 215 0 213 1 0 1 1 0 8 0 pipelkpl 48 142 0 132 1 0 1 1 0 8 0 pipepl 120 284 0 265 1 0 1 1 0 8 0 fdescpl 496 1409 0 1393 3 0 3 3 0 8 0 filepl 152 8084 0 7980 5 0 5 5 0 8 1 lockfpl 104 113 0 112 1 0 1 1 0 8 0 lockfspl 48 43 0 42 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 763 0 754 1 0 1 1 0 8 0 zombiepl 144 1394 0 1394 2 1 1 1 0 8 1 processpl 984 1446 0 1394 7 0 7 7 0 8 0 procpl 624 3596 0 3531 7 1 6 6 0 8 0 sosppl 128 1 0 1 1 1 0 1 0 8 0 sockpl 400 2579 0 2558 6 3 3 4 0 8 0 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 196 0 0 24 0 24 24 0 8 0 mtagpl 96 26 0 0 1 0 1 1 0 8 0 mbufpl 256 305 0 0 18 0 18 18 0 8 0 bufpl 280 5284 0 136 368 0 368 368 0 8 0 anonpl 16 128021 0 112581 99 28 71 79 0 124 6 amapchunkpl 152 7063 0 6922 13 2 11 11 0 158 4 amappl16 192 6407 0 5567 65 22 43 54 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 31 0 25 1 0 1 1 0 8 0 amappl13 168 43 0 40 1 0 1 1 0 8 0 amappl12 160 243 0 241 2 1 1 1 0 8 0 amappl11 152 383 0 367 1 0 1 1 0 8 0 amappl10 144 423 0 418 1 0 1 1 0 8 0 amappl9 136 387 0 385 1 0 1 1 0 8 0 amappl8 128 425 0 384 2 0 2 2 0 8 0 amappl7 120 548 0 532 1 0 1 1 0 8 0 amappl6 112 259 0 253 1 0 1 1 0 8 0 amappl5 104 1458 0 1442 1 0 1 1 0 8 0 amappl4 96 525 0 496 1 0 1 1 0 8 0 amappl3 88 538 0 531 1 0 1 1 0 8 0 amappl2 80 9574 0 9501 2 0 2 2 0 8 0 amappl1 72 36103 0 35661 23 13 10 18 0 8 0 amappl 80 3866 0 3819 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 19 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1415 0 1399 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1415 0 1399 1 0 1 1 0 8 0 vmmpekpl 168 13004 0 12963 2 0 2 2 0 8 0 vmmpepl 168 171356 0 169353 152 58 94 120 0 357 2 vmsppl 368 1414 0 1399 2 0 2 2 0 8 0 pdppl 4096 2837 0 2798 6 0 6 6 0 8 1 pvpl 32 393058 0 374338 225 52 173 189 0 265 18 pmappl 232 1414 0 1399 3 1 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 279 0 10 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240e307) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828f8078,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3210,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3210) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8290b140) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8290b140) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff826f6600) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828f7e70) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0x127 sys/kern/kern_lock.c:147 sleep_setup(ffff800020e83880,ffff800020e83938,120,ffffffff82467156) at sleep_setup+0xcf sys/kern/kern_synch.c:373 rwsleep(ffff800020e83938,ffff800020e38c70,120,ffffffff82467156,1771) at rwsleep+0x81 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] rwsleep(ffff800020e83938,ffff800020e38c70,120,ffffffff82467156,1771) at rwsleep+0x81 sys/kern/kern_synch.c:307 thrsleep(ffff800020e40280,ffff800020e83a20) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff800020e40280,ffff800020e83a20,ffff800020e83a70) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020e83af0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e83af0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc000051ed0, count: 5 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828f7e70) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f7e70) at __mp_lock+0x127 sys/kern/kern_lock.c:147 sleep_setup(ffff800020e83880,ffff800020e83938,120,ffffffff82467156) at sleep_setup+0xcf sys/kern/kern_synch.c:373 rwsleep(ffff800020e83938,ffff800020e38c70,120,ffffffff82467156,1771) at rwsleep+0x81 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] rwsleep(ffff800020e83938,ffff800020e38c70,120,ffffffff82467156,1771) at rwsleep+0x81 sys/kern/kern_synch.c:307 thrsleep(ffff800020e40280,ffff800020e83a20) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff800020e40280,ffff800020e83a20,ffff800020e83a70) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020e83af0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e83af0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc000051ed0, count: -10