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 75727 46242 0 0x2 0x4000080 1 syz-fuzzer * 81319 49248 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82418d6e) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828e2dd8,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da39f0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da39f0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828d8420) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828d8420) 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(ffffffff8279edc0) 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(ffffffff82418d6e) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828e2dd8,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da39f0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da39f0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828d8420) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828d8420) 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(ffffffff8279edc0) 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 0xffff800020da3760 rbx 0xffff800020da3810 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81c241ff kprintf+0x16f r9 0x1 r10 0x2 r11 0x3049b42d5f179349 r12 0x3000000008 r13 0xffff800020da3770 r14 0x100 r15 0x1 rip 0xffffffff816404f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da3750 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (systqmp) pid=81319 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d895f0,0xffff800020d889d0 process=0xffff800020d8a000 user=0xffff800020d9e000, vmspace=0xffffffff828d00a8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61214 62463 55122 0 2 0 syz-executor.0 61214 199146 55122 0 3 0x4000080 fsleep syz-executor.0 61214 415597 55122 0 2 0x4000000 syz-executor.0 55122 19892 46242 0 2 0x482 syz-executor.0 8858 32440 1 0 3 0x100083 ttyin getty 52811 165588 0 0 3 0x14200 acct acct 93944 264974 0 0 3 0x14280 nfsidl nfsio 41784 397097 0 0 3 0x14280 nfsidl nfsio 25628 125966 0 0 3 0x14280 nfsidl nfsio 3715 358465 0 0 3 0x14280 nfsidl nfsio 79241 103317 0 0 3 0x14280 nfsidl nfsio 78267 165572 0 0 3 0x14280 nfsidl nfsio 20848 435202 0 0 3 0x14280 nfsidl nfsio 63144 479821 0 0 3 0x14280 nfsidl nfsio 23542 156039 0 0 3 0x14280 nfsidl nfsio 67125 416480 0 0 3 0x14280 nfsidl nfsio 75157 339293 0 0 3 0x14280 nfsidl nfsio 50106 101072 0 0 3 0x14280 nfsidl nfsio 932 340293 0 0 3 0x14280 nfsidl nfsio 77449 86629 0 0 3 0x14280 nfsidl nfsio 91581 449471 0 0 3 0x14280 nfsidl nfsio 14179 410043 0 0 3 0x14280 nfsidl nfsio 7224 25735 0 0 3 0x14280 nfsidl nfsio 30634 336547 0 0 3 0x14280 nfsidl nfsio 41766 84485 0 0 3 0x14280 nfsidl nfsio 9220 256864 0 0 3 0x14280 nfsidl nfsio 16831 107964 0 0 3 0x14200 bored sosplice 67516 516944 46242 0 3 0x2 biowait syz-executor.1 46242 136130 14091 0 3 0x82 thrsleep syz-fuzzer 46242 371167 14091 0 2 0x4000482 syz-fuzzer 46242 119640 14091 0 3 0x4000082 thrsleep syz-fuzzer 46242 335449 14091 0 2 0x4000482 syz-fuzzer 46242 75727 14091 0 7 0x4000082 syz-fuzzer 46242 157143 14091 0 2 0x4000482 syz-fuzzer 46242 303798 14091 0 3 0x4000082 thrsleep syz-fuzzer 46242 437738 14091 0 2 0x4000002 syz-fuzzer 46242 485459 14091 0 3 0x4000082 kqread syz-fuzzer 46242 91718 14091 0 3 0x4000082 thrsleep syz-fuzzer 14091 35290 94641 0 3 0x10008a pause ksh 94641 90779 87312 0 3 0x92 select sshd 87312 18751 1 0 3 0x80 select sshd 6132 110971 24982 74 2 0x100492 pflogd 24982 81085 1 0 3 0x80 netio pflogd 50418 405527 41642 73 3 0x100090 kqread syslogd 41642 255158 1 0 3 0x100082 netio syslogd 458 160538 1 77 3 0x100090 poll dhclient 41923 132951 1 0 3 0x80 poll dhclient 59179 127779 0 0 3 0x14200 bored smr 69911 42444 0 0 2 0x14200 zerothread 12406 285843 0 0 3 0x14200 aiodoned aiodoned 63314 105428 0 0 2 0x14200 update 10301 198499 0 0 3 0x14200 cleaner cleaner 48986 306541 0 0 3 0x14200 reaper reaper 12897 439430 0 0 3 0x14200 pgdaemon pagedaemon 95348 138304 0 0 3 0x14200 bored crynlk 54127 500729 0 0 3 0x14200 bored crypto 46979 196677 0 0 3 0x40014200 acpi0 acpi0 42840 97866 0 0 3 0x40014200 idle1 2239 296572 0 0 2 0x14200 softnet *49248 81319 0 0 7 0x14200 systqmp 49139 82181 0 0 3 0x14200 bored systq 42929 135685 0 0 2 0x40014200 softclock 20296 131504 0 0 3 0x40014200 idle0 1 253929 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 (0xffffffff828d8430) #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 67516 (syz-executor.1) thread 0xffff800020e08c48 (516944) exclusive rrwlock inode r = 0 (0xfffffd8064a35b48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80686b40a0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 49248 (systqmp) thread 0xffff800020d88c30 (81319) shared rwlock pools r = 0 (0xffffffff82744290) #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 (0xffffffff8279ee30) #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 (0xffffffff828d8430) #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 9538 6435K 7016K 78643K 11796 0 pcb 13 8K 8K 78643K 141 0 rtable 124 8K 10K 78643K 742 0 ifaddr 89 17K 19K 78643K 278 0 counters 43 33K 34K 78643K 89 0 ioctlops 0 0K 4K 78643K 1598 0 iov 0 0K 24K 78643K 146 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1633 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 160 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 908 0 sigio 0 0K 0K 78643K 4 0 proc 62 63K 95K 78643K 596 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 73 0 in_multi 81 4K 4K 78643K 259 0 ether_multi 1 0K 0K 78643K 21 0 mrt 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 305 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 159 74K 74K 78643K 4090 0 UVM aobj 29 2K 2K 78643K 29 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 171 0 NDP 14 0K 0K 78643K 58 0 temp 136 3871K 3939K 78643K 18449 0 kqueue 5 8K 24K 78643K 102 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 13 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 61 0 59 1 0 1 1 0 8 0 rtentry 112 120 0 79 2 0 2 2 0 8 0 unpcb 120 404 0 393 1 0 1 1 0 8 0 syncache 264 7 0 7 3 3 0 1 0 8 0 tcpqe 32 119 0 119 1 1 0 1 0 8 0 tcpcb 544 258 0 254 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 296 995 0 987 3 2 1 2 0 8 0 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 36 0 32 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 3 0 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 11 0 10 1 0 1 1 0 482 0 pffrnode 88 11 0 10 1 0 1 1 0 8 0 pffrent 40 21 0 20 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 66 0 57 3 1 2 2 0 8 0 pftag 88 6 0 6 1 1 0 1 0 8 0 pfstitem 24 82 0 43 1 0 1 1 0 8 0 pfstkey 112 84 0 45 2 0 2 2 0 8 0 pfstate 328 83 0 44 5 0 5 5 0 8 0 pfrule 1360 41 0 31 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 501 0 321 16 4 12 15 0 8 0 art_table 32 503 0 321 2 0 2 2 0 8 0 art_node 16 119 0 82 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 157 0 147 1 0 1 1 0 8 0 shmpl 112 27 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2611 0 1205 89 0 89 89 0 8 0 ffsino 272 2611 0 1205 96 1 95 95 0 8 0 nchpl 144 4152 0 2556 60 0 60 60 0 8 0 uvmvnodes 72 2938 0 0 54 0 54 54 0 8 0 vnodes 208 2938 0 0 155 0 155 155 0 8 0 namei 1024 12649 0 12648 2 1 1 1 0 8 0 percpumem 16 55 0 23 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 13 0 6 1 0 1 1 0 8 0 pfiaddrpl 120 19 0 12 2 1 1 1 0 8 0 scxspl 192 12478 0 12477 13 12 1 7 0 8 0 plimitpl 152 98 0 90 1 0 1 1 0 8 0 sigapl 424 1141 0 1088 7 0 7 7 0 8 0 futexpl 56 15472 0 15471 3 2 1 1 0 8 0 knotepl 112 223 0 204 2 1 1 2 0 8 0 kqueuepl 144 436 0 425 1 0 1 1 0 8 0 pipepl 304 1329 0 1319 4 2 2 2 0 8 1 fdescpl 496 1104 0 1088 3 0 3 3 0 8 0 filepl 152 9467 0 9365 8 3 5 5 0 8 0 lockfpl 104 250 0 249 1 0 1 1 0 8 0 lockfspl 48 83 0 82 1 0 1 1 0 8 0 sessionpl 112 22 0 11 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 571 0 562 1 0 1 1 0 8 0 zombiepl 144 1088 0 1088 4 3 1 1 0 8 1 processpl 984 1141 0 1088 8 1 7 7 0 8 0 procpl 624 3165 0 3101 7 1 6 6 0 8 0 srpgc 64 1 0 1 1 1 0 1 0 8 0 sosppl 128 17 0 17 5 5 0 1 0 8 0 sockpl 400 1475 0 1455 8 5 3 4 0 8 0 mcl64k 65536 290 0 0 34 0 34 34 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 193 0 0 24 1 23 24 0 8 0 mtagpl 96 30 0 0 1 0 1 1 0 8 0 mbufpl 256 488 0 0 28 0 28 28 0 8 0 bufpl 280 5405 0 134 377 0 377 377 0 8 0 anonpl 16 133647 0 117707 121 44 77 84 0 124 8 amapchunkpl 152 7297 0 7144 33 17 16 20 0 158 9 amappl16 192 6265 0 5175 105 47 58 58 0 8 3 amappl15 184 9 0 8 1 0 1 1 0 8 0 amappl14 176 153 0 147 1 0 1 1 0 8 0 amappl13 168 57 0 51 1 0 1 1 0 8 0 amappl12 160 24 0 18 1 0 1 1 0 8 0 amappl11 152 65 0 50 1 0 1 1 0 8 0 amappl10 144 443 0 439 1 0 1 1 0 8 0 amappl9 136 674 0 673 1 0 1 1 0 8 0 amappl8 128 706 0 659 2 0 2 2 0 8 0 amappl7 120 561 0 544 1 0 1 1 0 8 0 amappl6 112 26 0 19 1 0 1 1 0 8 0 amappl5 104 1004 0 986 1 0 1 1 0 8 0 amappl4 96 552 0 519 1 0 1 1 0 8 0 amappl3 88 278 0 271 1 0 1 1 0 8 0 amappl2 80 7754 0 7685 2 0 2 2 0 8 0 amappl1 72 33966 0 33529 23 13 10 18 0 8 0 amappl 80 3456 0 3406 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 28 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1117 0 1094 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1117 0 1094 1 0 1 1 0 8 0 vmmpekpl 168 17348 0 17309 2 0 2 2 0 8 0 vmmpepl 168 142199 0 139927 195 68 127 127 0 357 22 vmsppl 368 1116 0 1094 3 0 3 3 0 8 0 pdppl 4096 2241 0 2195 9 2 7 7 0 8 0 pvpl 32 370997 0 351295 260 69 191 199 0 265 26 pmappl 232 1116 0 1094 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 330 0 18 9 0 9 9 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(ffffffff82418d6e) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828e2dd8,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da39f0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da39f0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828d8420) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828d8420) 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(ffffffff8279edc0) 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(ffffffff828e2bd0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828e2bd0,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e94d10,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e94d10,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e94d10,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(ffff800020e94dc8,ffff800020e39420,120,ffffffff8246589a,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 thrsleep(ffff800020e41d50,ffff800020e94eb0) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff800020e41d50,ffff800020e94eb0,ffff800020e94f00) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020e94f80) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e94f80) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004fe38, count: 2 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(ffffffff828e2bd0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828e2bd0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828e2bd0,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e94d10,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e94d10,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e94d10,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(ffff800020e94dc8,ffff800020e39420,120,ffffffff8246589a,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 thrsleep(ffff800020e41d50,ffff800020e94eb0) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff800020e41d50,ffff800020e94eb0,ffff800020e94f00) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020e94f80) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e94f80) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004fe38, count: -13