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 236058 49469 0 0x14000 0x200 0 softnet * 70826 29937 0 0x14000 0x200 1 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82410ec1) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cb930,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da2fd0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da2fd0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8291f248) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8291f248) 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(ffffffff8279c390) 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(ffffffff82410ec1) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cb930,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da2fd0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da2fd0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8291f248) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8291f248) 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(ffffffff8279c390) 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 0xffff800020da2d40 rbx 0xffff800020da2df0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff817e707f kprintf+0x16f r9 0x1 r10 0x2 r11 0x7689b64034228501 r12 0x3000000008 r13 0xffff800020da2d50 r14 0x100 r15 0x1 rip 0xffffffff81354558 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da2d30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (systqmp) pid=70826 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d89380,0xffff800020d88eb0 process=0xffff800020d8a000 user=0xffff800020d9e000, vmspace=0xffffffff828b11f0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37334 77366 0 0 3 0x14200 bored sosplice 52607 183257 66517 0 3 0x82 piperd syz-executor.1 72995 291753 66517 0 3 0x82 piperd syz-executor.0 66517 458332 86685 0 3 0x82 thrsleep syz-fuzzer 66517 170824 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 138546 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 204858 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 360460 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 74218 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 284630 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 444346 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 423060 86685 0 3 0x4000082 thrsleep syz-fuzzer 66517 342708 86685 0 3 0x4000082 kqread syz-fuzzer 86685 146272 92698 0 3 0x10008a pause ksh 92698 182487 75239 0 3 0x92 select sshd 62291 358260 1 0 3 0x100083 ttyin getty 75239 505760 1 0 3 0x80 select sshd 89735 76582 75867 74 3 0x100092 bpf pflogd 75867 318348 1 0 3 0x80 netio pflogd 88643 217150 54603 73 3 0x100090 kqread syslogd 54603 44208 1 0 3 0x100082 netio syslogd 5540 132982 1 77 3 0x100090 poll dhclient 16610 172002 1 0 3 0x80 poll dhclient 86891 179264 0 0 3 0x14200 bored smr 67519 306718 0 0 3 0x14200 pgzero zerothread 39869 353891 0 0 3 0x14200 aiodoned aiodoned 66262 92521 0 0 3 0x14200 syncer update 82628 216521 0 0 3 0x14200 cleaner cleaner 12726 425573 0 0 3 0x14200 reaper reaper 72090 463606 0 0 3 0x14200 pgdaemon pagedaemon 49145 45293 0 0 3 0x14200 bored crynlk 82271 19522 0 0 3 0x14200 bored crypto 8712 252593 0 0 3 0x40014200 acpi0 acpi0 19804 9832 0 0 3 0x40014200 idle1 49469 236058 0 0 7 0x14200 softnet *29937 70826 0 0 7 0x14200 systqmp 56146 331153 0 0 3 0x14200 bored systq 64282 140732 0 0 3 0x40014200 bored softclock 46604 26341 0 0 3 0x40014200 idle0 1 86854 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex pfstitem r = 0 (0xffffffff82919850) #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_put+0x64 sys/kern/subr_pool.c:792 #4 pf_state_key_detach+0xa1 sys/net/pf.c:797 #5 pf_remove_state+0x31f pf_detach_state sys/net/pf.c:775 [inline] #5 pf_remove_state+0x31f sys/net/pf.c:1404 #6 pf_purge_expired_states+0x1fd #7 pf_purge+0x3f sys/net/pf.c:1278 #8 taskq_thread+0xec sys/kern/kern_task.c:437 #9 proc_trampoline+0x1c CPU 1: exclusive mutex mbufpl r = 0 (0xffffffff8291f258) #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 49469 (softnet) thread 0xffff800020d88ea0 (236058) exclusive rwlock netlock r = 0 (0xffffffff826fbc18) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pf_purge+0x27 sys/net/pf.c:1273 #2 taskq_thread+0xec sys/kern/kern_task.c:437 #3 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828cb930) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pf_purge+0x1b sys/net/pf.c:1264 #2 taskq_thread+0xec sys/kern/kern_task.c:437 #3 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #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 Process 29937 (systqmp) thread 0xffff800020d89110 (70826) shared rwlock pools r = 0 (0xffffffff82779db0) #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 (0xffffffff8279c400) #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 (0xffffffff8291f258) #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 9541 6432K 6700K 78643K 11157 0 pcb 13 8K 8K 78643K 54 0 rtable 91 3K 5K 78643K 395 0 ifaddr 89 16K 17K 78643K 138 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1496 0 iov 0 0K 16K 78643K 56 0 mount 1 1K 1K 78643K 1 0 vnodes 1214 76K 77K 78643K 1412 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 76 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 473 0 sigio 0 0K 0K 78643K 10 0 proc 61 63K 83K 78643K 485 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 18 0 in_multi 49 2K 3K 78643K 112 0 ether_multi 1 0K 0K 78643K 8 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 247 0 pfkey data 0 0K 1K 78643K 2 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 124 71K 71K 78643K 2396 0 UVM aobj 9 2K 2K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 45 0 NDP 15 0K 0K 78643K 28 0 temp 113 3855K 4103K 78643K 8384 0 kqueue 3 4K 8K 78643K 15 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 13 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 475 0 473 1 0 1 1 0 8 0 rtentry 112 78 0 43 2 0 2 2 0 8 0 unpcb 120 255 0 245 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 602 0 602 1 1 0 1 0 8 0 tcpcb 544 107 0 103 1 0 1 1 0 8 0 inpcb 296 510 0 503 2 1 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 12 0 8 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 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 6 0 5 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 5 0 5 1 1 0 1 0 8 0 pfstitem 24 34 0 14 1 0 1 1 0 8 0 pfstkey 112 34 0 14 1 0 1 1 0 8 0 pfstate 328 33 0 14 3 0 3 3 0 8 0 pfrule 1360 23 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 347 0 191 14 2 12 14 0 8 1 art_table 32 348 0 191 2 0 2 2 0 8 0 art_node 16 76 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 68 0 58 1 0 1 1 0 8 0 shmpl 112 14 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2030 0 629 89 1 88 89 0 8 0 ffsino 272 2030 0 629 95 1 94 94 0 8 0 nchpl 144 2950 0 1342 60 0 60 60 0 8 0 uvmvnodes 72 2197 0 0 40 0 40 40 0 8 0 vnodes 208 2197 0 0 116 0 116 116 0 8 0 namei 1024 7836 0 7836 1 0 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 scxspl 192 8990 0 8990 8 7 1 7 0 8 1 plimitpl 152 37 0 29 1 0 1 1 0 8 0 sigapl 424 689 0 658 4 0 4 4 0 8 0 futexpl 56 6253 0 6253 1 0 1 1 0 8 1 knotepl 112 73 0 54 1 0 1 1 0 8 0 kqueuepl 144 49 0 46 1 0 1 1 0 8 0 pipelkpl 48 129 0 119 1 0 1 1 0 8 0 pipepl 120 258 0 239 2 1 1 2 0 8 0 fdescpl 496 673 0 658 3 0 3 3 0 8 0 filepl 152 3967 0 3867 6 1 5 5 0 8 1 lockfpl 104 85 0 84 1 0 1 1 0 8 0 lockfspl 48 30 0 29 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 344 0 334 1 0 1 1 0 8 0 zombiepl 144 658 0 658 2 1 1 1 0 8 1 processpl 984 689 0 658 6 1 5 5 0 8 0 procpl 624 1606 0 1566 4 0 4 4 0 8 0 sosppl 128 1 0 1 1 1 0 1 0 8 0 sockpl 400 1244 0 1225 5 2 3 4 0 8 1 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 192 0 0 23 0 23 23 0 8 0 mtagpl 96 34 0 0 1 0 1 1 0 8 0 mbufpl 256 399 0 0 24 0 24 24 0 8 0 bufpl 280 4632 0 132 322 0 322 322 0 8 0 anonpl 16 68455 0 57052 66 1 65 65 0 124 0 amapchunkpl 152 3772 0 3640 20 12 8 20 0 158 1 amappl16 192 3092 0 2258 44 0 44 44 0 8 2 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 26 0 20 1 0 1 1 0 8 0 amappl13 168 37 0 33 1 0 1 1 0 8 0 amappl12 160 7 0 5 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 258 0 252 1 0 1 1 0 8 0 amappl9 136 384 0 383 1 0 1 1 0 8 0 amappl8 128 356 0 324 2 0 2 2 0 8 0 amappl7 120 362 0 349 1 0 1 1 0 8 0 amappl6 112 26 0 23 1 0 1 1 0 8 0 amappl5 104 580 0 565 1 0 1 1 0 8 0 amappl4 96 488 0 460 1 0 1 1 0 8 0 amappl3 88 120 0 114 1 0 1 1 0 8 0 amappl2 80 4441 0 4381 2 0 2 2 0 8 0 amappl1 72 24150 0 23719 23 13 10 18 0 8 0 amappl 80 1869 0 1823 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 15 0 7 1 0 1 1 0 8 0 uaddrrnd 24 680 0 660 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 680 0 660 1 0 1 1 0 8 0 vmmpekpl 168 8998 0 8964 2 0 2 2 0 8 0 vmmpepl 168 87171 0 85281 118 24 94 113 0 357 3 vmsppl 368 679 0 660 2 0 2 2 0 8 0 pdppl 4096 1367 0 1325 7 1 6 6 0 8 0 pvpl 32 227355 0 212884 161 1 160 160 0 265 7 pmappl 232 679 0 660 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 277 0 10 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff826eeff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x14 kd_curproc sys/dev/kcov.c:397 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x14 sys/dev/kcov.c:79 mtx_enter(ffff80000002c018) at mtx_enter+0x3a sys/kern/kern_lock.c:265 msleep(ffff80000002c000,ffff80000002c018,20,ffffffff8242b765,0) at msleep+0x242 taskq_next_work(ffff80000002c000,ffff800020da9298) at taskq_next_work+0x8d sys/kern/kern_task.c:394 taskq_thread(ffff80000002c000) at taskq_thread+0x135 sys/kern/kern_task.c:434 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff826eeff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x14 kd_curproc sys/dev/kcov.c:397 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x14 sys/dev/kcov.c:79 mtx_enter(ffff80000002c018) at mtx_enter+0x3a sys/kern/kern_lock.c:265 msleep(ffff80000002c000,ffff80000002c018,20,ffffffff8242b765,0) at msleep+0x242 taskq_next_work(ffff80000002c000,ffff800020da9298) at taskq_next_work+0x8d sys/kern/kern_task.c:394 taskq_thread(ffff80000002c000) at taskq_thread+0x135 sys/kern/kern_task.c:434 end trace frame: 0x0, count: -8 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(ffffffff82410ec1) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cb930,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da2fd0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da2fd0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8291f248) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8291f248) 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(ffffffff8279c390) 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(ffffffff82410ec1) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828cb930,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da2fd0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da2fd0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff8291f248) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff8291f248) 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(ffffffff8279c390) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10