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 67377 41242 0 0x2 0 0 syz-executor.0 *395322 11064 0 0x14000 0x200 1 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82412dbe) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828ac7e0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3510,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3510) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bfde0) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bfde0) 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(ffffffff8272c210) 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(ffffffff82412dbe) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828ac7e0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3510,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3510) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bfde0) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bfde0) 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(ffffffff8272c210) 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 0xffff800020da3280 rbx 0xffff800020da3330 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8121f16f kprintf+0x16f r9 0x1 r10 0x2 r11 0xee7c96aaa199128a r12 0x3000000008 r13 0xffff800020da3290 r14 0x100 r15 0x1 rip 0xffffffff81b076f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da3270 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (systqmp) pid=395322 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d889c0,0xffff800020d884f0 process=0xffff800020d8af60 user=0xffff800020d9e000, vmspace=0xffffffff828f4038 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31939 154836 99308 0 3 0x80 fsleep syz-executor.1 31939 134981 99308 0 3 0x4000080 piperd syz-executor.1 98815 251163 0 0 3 0x14200 bored sosplice 99308 268517 30339 0 3 0x82 nanosleep syz-executor.1 41242 67377 30339 0 7 0x2 syz-executor.0 30339 513297 8615 0 3 0x82 thrsleep syz-fuzzer 30339 240876 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 507857 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 101344 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 430332 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 1809 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 290871 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 335005 8615 0 3 0x4000082 thrsleep syz-fuzzer 30339 497342 8615 0 3 0x4000082 kqread syz-fuzzer 30339 225123 8615 0 3 0x4000082 thrsleep syz-fuzzer 8615 22260 51820 0 3 0x10008a pause ksh 51820 209004 31793 0 3 0x92 select sshd 74364 95222 1 0 3 0x100083 ttyin getty 31793 364887 1 0 3 0x80 select sshd 12365 150168 14085 74 3 0x100092 bpf pflogd 14085 470669 1 0 3 0x80 netio pflogd 93336 291414 66257 73 3 0x100090 kqread syslogd 66257 106255 1 0 3 0x100082 netio syslogd 52674 261649 1 77 3 0x100090 poll dhclient 77269 267653 1 0 3 0x80 poll dhclient 75021 25331 0 0 3 0x14200 bored smr 99847 458071 0 0 3 0x14200 pgzero zerothread 5167 6207 0 0 3 0x14200 aiodoned aiodoned 4504 355100 0 0 2 0x14200 update 48250 321974 0 0 3 0x14200 cleaner cleaner 68407 162427 0 0 3 0x14200 reaper reaper 77059 483534 0 0 3 0x14200 pgdaemon pagedaemon 3525 271942 0 0 3 0x14200 bored crynlk 34839 337744 0 0 3 0x14200 bored crypto 23137 193406 0 0 3 0x40014200 acpi0 acpi0 27284 445686 0 0 3 0x40014200 idle1 8122 317452 0 0 3 0x14200 bored softnet *11064 395322 0 0 7 0x14200 systqmp 86698 186501 0 0 3 0x14200 bored systq 54480 4277 0 0 3 0x40014200 bored softclock 93570 472314 0 0 3 0x40014200 idle0 1 268445 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex mbufpl r = 0 (0xffffffff828bfdf0) #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 11064 (systqmp) thread 0xffff800020d88750 (395322) shared rwlock pools r = 0 (0xffffffff8273dd50) #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 (0xffffffff8272c280) #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 (0xffffffff828bfdf0) #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 9518 6423K 6792K 78643K 10934 0 pcb 13 8K 8K 78643K 79 0 rtable 101 6K 8K 78643K 344 0 ifaddr 84 17K 17K 78643K 103 0 counters 43 33K 34K 78643K 47 0 ioctlops 0 0K 4K 78643K 1520 0 iov 0 0K 16K 78643K 77 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1367 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 60 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 302 0 proc 63 63K 95K 78643K 484 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 29 0 in_multi 64 3K 3K 78643K 116 0 ether_multi 1 0K 0K 78643K 13 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 221 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 39K 39K 78643K 1856 0 UVM aobj 6 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 52 0 NDP 11 0K 0K 78643K 19 0 temp 96 3859K 3923K 78643K 2952 0 kqueue 4 5K 6K 78643K 9 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 10 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 42 0 40 1 0 1 1 0 8 0 rtentry 112 62 0 27 2 0 2 2 0 8 0 unpcb 120 202 0 191 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 31 0 31 1 1 0 1 0 8 0 tcpcb 544 144 0 140 1 0 1 1 0 8 0 inpcb 296 373 0 365 5 4 1 2 0 8 0 nd6 48 11 0 7 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 1 0 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 92 0 91 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 pfrke_plain 160 9 0 5 1 0 1 1 0 8 0 pfrktable 1344 21 0 16 1 0 1 1 0 8 0 pfstitem 24 15 0 12 1 0 1 1 0 8 0 pfstkey 112 15 0 12 1 0 1 1 0 8 0 pfstate 328 15 0 12 2 0 2 2 0 8 0 pfsrctr 152 36 0 36 1 1 0 1 0 8 0 pfrule 1360 28 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 264 0 93 13 1 12 13 0 8 0 art_table 32 265 0 93 2 0 2 2 0 8 0 art_node 16 61 0 31 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 6 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1836 0 432 89 0 89 89 0 8 0 ffsino 272 1836 0 432 94 0 94 94 0 8 0 nchpl 144 2472 0 860 60 0 60 60 0 8 0 rtmask 32 14 0 12 1 0 1 1 0 8 0 uvmvnodes 72 1961 0 0 36 0 36 36 0 8 0 vnodes 208 1961 0 0 104 0 104 104 0 8 0 namei 1024 7303 0 7303 2 1 1 1 0 8 1 percpumem 16 34 0 2 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 2 1 0 1 1 0 8 0 scxspl 192 7020 0 7020 11 10 1 7 0 8 1 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 424 518 0 485 4 0 4 4 0 8 0 futexpl 56 6892 0 6891 2 1 1 1 0 8 0 knotepl 112 67 0 47 1 0 1 1 0 8 0 kqueuepl 144 30 0 26 1 0 1 1 0 8 0 pipelkpl 48 202 0 191 1 0 1 1 0 8 0 pipepl 120 404 0 383 1 0 1 1 0 8 0 fdescpl 496 502 0 485 3 0 3 3 0 8 0 filepl 152 3464 0 3354 6 1 5 5 0 8 0 lockfpl 104 125 0 124 1 0 1 1 0 8 0 lockfspl 48 40 0 39 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 828 0 819 1 0 1 1 0 8 0 zombiepl 144 486 0 485 2 1 1 1 0 8 0 processpl 984 518 0 485 5 0 5 5 0 8 0 procpl 624 1090 0 1047 4 0 4 4 0 8 0 sosppl 128 10 0 10 2 2 0 1 0 8 0 sockpl 400 623 0 603 8 5 3 5 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 180 0 0 22 1 21 22 0 8 1 mtagpl 96 25 0 0 1 0 1 1 0 8 0 mbufpl 256 487 0 0 28 0 28 28 0 8 0 bufpl 280 3741 0 132 258 0 258 258 0 8 0 anonpl 16 57223 0 40239 70 1 69 69 0 124 0 amapchunkpl 152 2469 0 2322 8 1 7 8 0 158 0 amappl16 192 2178 0 1251 49 2 47 47 0 8 0 amappl15 184 137 0 134 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 144 0 140 1 0 1 1 0 8 0 amappl11 152 60 0 44 1 0 1 1 0 8 0 amappl10 144 21 0 16 1 0 1 1 0 8 0 amappl9 136 385 0 383 1 0 1 1 0 8 0 amappl8 128 353 0 322 2 0 2 2 0 8 0 amappl7 120 118 0 106 1 0 1 1 0 8 0 amappl6 112 24 0 22 1 0 1 1 0 8 0 amappl5 104 542 0 524 1 0 1 1 0 8 0 amappl4 96 496 0 468 1 0 1 1 0 8 0 amappl3 88 114 0 108 1 0 1 1 0 8 0 amappl2 80 3199 0 3121 2 0 2 2 0 8 0 amappl1 72 20765 0 20297 23 13 10 18 0 8 0 amappl 80 1337 0 1289 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 7 0 2 1 0 1 1 0 8 0 uaddrrnd 24 504 0 485 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 504 0 485 1 0 1 1 0 8 0 vmmpekpl 168 8000 0 7965 2 0 2 2 0 8 0 vmmpepl 168 67446 0 65244 122 26 96 115 0 357 0 vmsppl 368 503 0 485 2 0 2 2 0 8 0 pdppl 4096 1015 0 972 6 0 6 6 0 8 0 pvpl 32 191510 0 171292 176 11 165 166 0 265 1 pmappl 232 503 0 485 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 282 0 11 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff826f8ff0) 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(ffffffff828ac5d8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ac5d8) 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 __mp_lock(ffffffff828ac5d8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 syscall(ffff800020ee1f20) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800020ee1f20) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd78b0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff826f8ff0) 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(ffffffff828ac5d8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ac5d8) 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 __mp_lock(ffffffff828ac5d8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 syscall(ffff800020ee1f20) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800020ee1f20) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd78b0, count: -9 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(ffffffff82412dbe) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828ac7e0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3510,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3510) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bfde0) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bfde0) 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(ffffffff8272c210) 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(ffffffff82412dbe) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828ac7e0,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828ac5d8) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da3510,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da3510) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828bfde0) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828bfde0) 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(ffffffff8272c210) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10