login: 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 240180 82176 0 0 0 0 syz-executor.0 *220564 94328 0 0x14000 0x200 1 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ff789) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cdac0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3b50,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3b50) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bd1a8) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bd1a8) 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(ffffffff82738380) 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ff789) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cdac0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3b50,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3b50) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bd1a8) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bd1a8) 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(ffffffff82738380) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da38c0 rbx 0xffff800020da3970 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8137073f kprintf+0x16f r9 0x1 r10 0x2 r11 0x33a016fc98f558ab r12 0x3000000008 r13 0xffff800020da38d0 r14 0x100 r15 0x1 rip 0xffffffff81a9dea8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da38b0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (systqmp) pid=220564 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d895f0,0xffff800020d88eb0 process=0xffff800020d8a3d8 user=0xffff800020d9e000, vmspace=0xffffffff8290b9f0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82176 240180 11422 0 7 0 syz-executor.0 82176 76096 11422 0 3 0x4000080 lockf syz-executor.0 82176 213865 11422 0 3 0x4000080 lockf syz-executor.0 82176 512610 11422 0 3 0x4000080 fsleep syz-executor.0 82176 317405 11422 0 3 0x4000080 fsleep syz-executor.0 82176 183156 11422 0 3 0x4000080 fsleep syz-executor.0 51529 183737 93680 0 3 0x80 nanosleep syz-executor.1 51529 398997 93680 0 3 0x4000080 lockf syz-executor.1 51529 243867 93680 0 3 0x4000080 lockf syz-executor.1 51529 341713 93680 0 3 0x4000080 fsleep syz-executor.1 41409 425515 0 0 3 0x14200 bored sosplice 93680 264867 20957 0 3 0x82 nanosleep syz-executor.1 11422 396671 20957 0 3 0x82 nanosleep syz-executor.0 20957 79748 10702 0 3 0x82 thrsleep syz-fuzzer 20957 65417 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 18463 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 265905 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 214261 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 462663 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 33274 10702 0 3 0x4000082 kqread syz-fuzzer 20957 119063 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 486891 10702 0 3 0x4000082 thrsleep syz-fuzzer 20957 248238 10702 0 3 0x4000082 thrsleep syz-fuzzer 10702 523836 37745 0 3 0x10008a pause ksh 37745 202315 40063 0 3 0x92 select sshd 14020 460084 1 0 3 0x100083 ttyin getty 40063 81242 1 0 3 0x80 select sshd 47740 325444 7724 74 3 0x100092 bpf pflogd 7724 372451 1 0 3 0x80 netio pflogd 62377 285957 72312 73 3 0x100090 kqread syslogd 72312 97360 1 0 3 0x100082 netio syslogd 37096 520744 1 77 3 0x100090 poll dhclient 9753 490051 1 0 3 0x80 poll dhclient 72366 244356 0 0 3 0x14200 bored smr 29940 430161 0 0 3 0x14200 pgzero zerothread 6692 162303 0 0 3 0x14200 aiodoned aiodoned 29658 421373 0 0 3 0x14200 syncer update 49718 417145 0 0 3 0x14200 cleaner cleaner 81681 113549 0 0 3 0x14200 reaper reaper 37562 61431 0 0 3 0x14200 pgdaemon pagedaemon 94069 414339 0 0 3 0x14200 bored crynlk 38900 427672 0 0 3 0x14200 bored crypto 24943 326681 0 0 3 0x40014200 acpi0 acpi0 74248 30760 0 0 3 0x40014200 idle1 17546 180911 0 0 3 0x14200 bored softnet *94328 220564 0 0 7 0x14200 systqmp 38894 521983 0 0 3 0x14200 bored systq 99792 180740 0 0 3 0x40014200 bored softclock 90415 385331 0 0 3 0x40014200 idle0 1 194780 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff828c7aa8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 sleep_setup+0xf1 sys/kern/kern_synch.c:380 #2 tsleep+0xe6 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] #2 tsleep+0xe6 sys/kern/kern_synch.c:151 #3 sys_nanosleep+0x205 sys/kern/kern_time.c:297 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 CPU 1: exclusive mutex mbufpl r = 0 (0xffffffff828bd1b8) #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 94328 (systqmp) thread 0xffff800020d89380 (220564) shared rwlock pools r = 0 (0xffffffff8270d870) #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 (0xffffffff827383f0) #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 (0xffffffff828bd1b8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9506 6411K 6729K 78643K 10846 0 pcb 13 8K 8K 78643K 44 0 rtable 100 4K 6K 78643K 259 0 ifaddr 67 14K 14K 78643K 81 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1496 0 iov 0 0K 16K 78643K 19 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1308 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 55 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 191 0 proc 61 63K 95K 78643K 452 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 14 0 in_multi 45 2K 2K 78643K 71 0 ether_multi 1 0K 0K 78643K 4 0 mrt 0 0K 0K 78643K 3 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 222 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 121 22K 26K 78643K 1602 0 UVM aobj 11 6K 7K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 24 0 NDP 10 0K 0K 78643K 15 0 temp 96 3852K 3916K 78643K 3836 0 kqueue 3 4K 12K 78643K 18 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 56 0 17 2 0 2 2 0 8 0 unpcb 120 163 0 153 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1142 0 1142 2 2 0 1 0 8 0 tcpcb 544 56 0 52 1 0 1 1 0 8 0 inpcb 296 290 0 283 4 3 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 7 0 5 1 0 1 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 47 0 46 1 0 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 10 0 8 2 1 1 1 0 8 0 pfstitem 24 27 0 8 1 0 1 1 0 8 0 pfstkey 112 27 0 8 1 0 1 1 0 8 0 pfstate 328 26 0 8 2 0 2 2 0 8 0 pfrule 1360 26 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 222 0 58 13 1 12 13 0 8 0 art_table 32 223 0 58 2 0 2 2 0 8 0 art_node 16 55 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 50 0 40 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1654 0 248 90 1 89 89 0 8 0 ffsino 272 1654 0 248 95 1 94 94 0 8 0 nchpl 144 2140 0 529 60 0 60 60 0 8 0 uvmvnodes 72 1756 0 0 32 0 32 32 0 8 0 vnodes 208 1756 0 0 93 0 93 93 0 8 0 namei 1024 5923 0 5923 4 3 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 2 2 1 1 1 0 8 0 scxspl 192 6337 0 6337 9 8 1 7 0 8 1 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 424 409 0 376 4 0 4 4 0 8 0 futexpl 56 2879 0 2875 3 2 1 1 0 8 0 knotepl 112 79 0 60 1 0 1 1 0 8 0 kqueuepl 144 28 0 24 1 0 1 1 0 8 0 pipelkpl 48 101 0 91 1 0 1 1 0 8 0 pipepl 120 202 0 183 1 0 1 1 0 8 0 fdescpl 496 391 0 374 3 0 3 3 0 8 0 filepl 152 2447 0 2342 7 2 5 5 0 8 0 lockfpl 104 372 0 364 1 0 1 1 0 8 0 lockfspl 48 84 0 80 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 359 0 350 1 0 1 1 0 8 0 zombiepl 144 376 0 376 2 1 1 1 0 8 1 processpl 984 409 0 376 6 1 5 5 0 8 0 procpl 624 841 0 791 6 2 4 5 0 8 0 sosppl 128 4 0 4 1 1 0 1 0 8 0 sockpl 400 486 0 467 6 4 2 4 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 214 0 0 26 0 26 26 0 8 0 mtagpl 96 26 0 0 1 0 1 1 0 8 0 mbufpl 256 279 0 0 17 0 17 17 0 8 0 bufpl 280 3800 0 140 262 0 262 262 0 8 0 anonpl 16 54522 0 38431 80 15 65 79 0 124 0 amapchunkpl 152 2521 0 2360 20 13 7 20 0 158 0 amappl16 192 1753 0 894 56 12 44 54 0 8 0 amappl15 184 2 0 1 2 1 1 1 0 8 0 amappl14 176 186 0 176 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 171 0 165 1 0 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 20 0 12 1 0 1 1 0 8 0 amappl9 136 388 0 387 1 0 1 1 0 8 0 amappl8 128 343 0 315 1 0 1 1 0 8 0 amappl7 120 119 0 107 1 0 1 1 0 8 0 amappl6 112 21 0 19 2 1 1 1 0 8 0 amappl5 104 132 0 116 1 0 1 1 0 8 0 amappl4 96 646 0 612 1 0 1 1 0 8 0 amappl3 88 267 0 258 1 0 1 1 0 8 0 amappl2 80 2184 0 2106 2 0 2 2 0 8 0 amappl1 72 18543 0 18061 23 13 10 18 0 8 0 amappl 80 1089 0 1038 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 391 0 374 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 391 0 374 1 0 1 1 0 8 0 vmmpekpl 168 7283 0 7249 2 0 2 2 0 8 0 vmmpepl 168 54640 0 52482 126 32 94 111 0 357 0 vmsppl 368 390 0 374 2 0 2 2 0 8 0 pdppl 4096 789 0 748 7 1 6 6 0 8 0 pvpl 32 176292 0 156904 191 23 168 188 0 265 11 pmappl 232 390 0 374 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 278 0 16 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff826f4ff0) 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(ffffffff828cd8b8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffce8f0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff826f4ff0) 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(ffffffff828cd8b8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffce8f0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ff789) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cdac0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3b50,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3b50) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bd1a8) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bd1a8) 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(ffffffff82738380) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: 5 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823ff789) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cdac0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cd8b8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3b50,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3b50) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bd1a8) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bd1a8) 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(ffffffff82738380) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10