witness: lock order reversal: 1st 0xffffffff838c8b88 &sched_lock (&sched_lock) 2nd 0xffff8000299eee08 &cq->cq_mtx (&cq->cq_mtx) lock order [1] &sched_lock (&sched_lock) -> [2] &cq->cq_mtx (&cq->cq_mtx) #0 mtx_enter+0x4a sys/kern/kern_lock.c:260 #1 clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 #2 mi_switch+0x16f sys/kern/sched_bsd.c:378 #3 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #4 sys_futex+0xa99 futex_wait sys/kern/sys_futex.c:301 [inline] #4 sys_futex+0xa99 sys/kern/sys_futex.c:151 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #6 Xsyscall+0x128 lock order [2] &cq->cq_mtx (&cq->cq_mtx) -> [1] &sched_lock (&sched_lock) #0 mtx_enter+0x4a sys/kern/kern_lock.c:260 #1 sleep_setup+0xc6 sys/kern/kern_synch.c:302 #2 msleep_nsec+0x10b sys/kern/kern_synch.c:217 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 #4 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x109 sys/dev/dt/dt_dev.c:232 #5 spec_close+0x466 sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x121 sys/kern/kern_descrip.c:1280 #9 closef+0x192 sys/kern/kern_descrip.c:1264 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffff8000299eee08,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 mtx_enter(ffff8000299eedf8) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_cancel(ffff8000299ee2f8) at clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 mi_switch() at mi_switch+0x16f sys/kern/sched_bsd.c:378 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 sys_futex(ffff8000ffff3768,ffff80003c475c30,ffff80003c475b80) at sys_futex+0xa99 futex_wait sys/kern/sys_futex.c:301 [inline] sys_futex(ffff8000ffff3768,ffff80003c475c30,ffff80003c475b80) at sys_futex+0xa99 sys/kern/sys_futex.c:151 syscall(ffff80003c475c30) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c475c30) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf8cd7642ce0, count: -9 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c475850 rbx 0 rdx 0xffff800001472f80 rcx 0xffff8000ffff3768 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c475730 r9 0x8080808080808080 r10 0x6fd3b7fc99254565 r11 0xd9656a9cca88a66f r12 0xfffffd8003ef3300 r13 0xfffffd80046e3a28 r14 0x3 r15 0xffffffff833e35c2 substchar+0xd6dc rip 0xffffffff814f2bd5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c475840 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=383266 pid=62628 tcnt=2 stat=sleep flags process=4000000 proc=4000080 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0xffff80003c475a90, wmesg=fsleep, ps_single=0x0 scnt=0 ecnt=0 forw=0x0, list=0xffff80003c47a2d0,0xffff80003a8382d8 process=0xffff800038c270e0 user=0xffff80003c470000, vmspace=0xfffffd806b9cdb88 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 62628 342181 30597 0 7 0x4000000 syz-executor *62628 383266 30597 0 3 0x4000080 fsleep syz-executor 8102 396659 53358 0 2 0 syz-executor 8102 319826 53358 0 3 0x4000080 fsleep syz-executor 8102 494824 53358 0 3 0x4000080 fsleep syz-executor 73887 157562 23333 0 2 0 syz-executor 73887 451820 23333 0 3 0x4000080 fsleep syz-executor 24963 280672 14591 0 2 0 syz-executor 24963 115022 14591 0 2 0x4000000 syz-executor 73631 72518 710 0 2 0 syz-executor 73631 317727 710 0 3 0x4000080 sbwait syz-executor 73631 182136 710 0 3 0x4000080 fsleep syz-executor 31749 55428 65522 -1 2 0x10 syz-executor 31749 238596 65522 -1 2 0x4000010 syz-executor 19256 8810 58470 0 3 0x80 nanoslp syz-executor 19256 94913 58470 0 3 0x4000080 sbwait syz-executor 19256 287509 58470 0 3 0x4000080 fsleep syz-executor 88816 112350 0 0 3 0x14280 nfsidl nfsio 75608 453284 0 0 3 0x14280 nfsidl nfsio 53918 473858 0 0 3 0x14280 nfsidl nfsio 81857 183761 0 0 3 0x14280 nfsidl nfsio 41975 510004 0 0 3 0x14280 nfsidl nfsio 48534 349186 0 0 3 0x14280 nfsidl nfsio 85038 422695 0 0 3 0x14280 nfsidl nfsio 6268 208785 0 0 3 0x14280 nfsidl nfsio 8105 197593 0 0 3 0x14280 nfsidl nfsio 61604 133649 0 0 3 0x14280 nfsidl nfsio 95056 145804 0 0 3 0x14280 nfsidl nfsio 84788 264687 0 0 3 0x14280 nfsidl nfsio 63664 198890 0 0 3 0x14280 nfsidl nfsio 90894 123413 0 0 3 0x14280 nfsidl nfsio 28281 284951 0 0 3 0x14280 nfsidl nfsio 55281 443774 0 0 3 0x14280 nfsidl nfsio 46990 335269 0 0 3 0x14280 nfsidl nfsio 1503 106164 0 0 3 0x14280 nfsidl nfsio 13968 310842 0 0 3 0x14280 nfsidl nfsio 1568 215698 0 0 3 0x14280 nfsidl nfsio 53358 483098 91643 0 3 0x82 nanoslp syz-executor 58470 313437 91643 0 3 0x82 nanoslp syz-executor 23333 1996 91643 0 3 0x82 nanoslp syz-executor 65522 182553 91643 0 3 0x82 nanoslp syz-executor 30597 170978 91643 0 3 0x82 nanoslp syz-executor 710 215562 91643 0 3 0x82 nanoslp syz-executor 40620 355721 91643 0 2 0x2 syz-executor 14591 442977 91643 0 3 0x82 nanoslp syz-executor 91643 458705 53922 0 3 0x82 kqread syz-executor 53922 104509 69631 0 3 0x10008a sigsusp ksh 69631 475574 44050 0 3 0x98 kqread sshd-session 44050 133514 59158 0 3 0x92 kqread sshd-session 26694 446210 1 0 3 0x100083 ttyopn getty 59158 432235 1 0 3 0x88 kqread sshd 7234 359408 82007 74 3 0x1100092 bpf pflogd 82007 379827 1 0 3 0x80 sbwait pflogd 84273 82102 80229 73 3 0x1100090 kqread syslogd 80229 413974 1 0 3 0x100082 sbwait syslogd 61106 484074 1 0 3 0x100080 kqread resolvd 11555 415020 79701 77 3 0x100092 kqread dhcpleased 54855 79125 79701 77 3 0x100092 kqread dhcpleased 79701 428059 1 0 3 0x80 kqread dhcpleased 9723 182157 0 0 3 0x14200 bored smr 73810 161554 0 0 2 0x14200 zerothread 86 289493 0 0 3 0x14200 aiodoned aiodoned 63089 437437 0 0 3 0x14200 syncer update 69594 413448 0 0 3 0x14200 cleaner cleaner 52780 111440 0 0 3 0x14200 reaper reaper 51026 182296 0 0 3 0x14200 pgdaemon pagedaemon 7475 20707 0 0 3 0x14200 bored viomb 71512 339665 0 0 3 0x40014200 acpi0 acpi0 32808 517926 0 0 3 0x40014200 idle1 87076 225881 0 0 3 0x14200 bored softnet7 80820 236082 0 0 3 0x14200 bored softnet6 26734 147252 0 0 3 0x14200 bored softnet5 58473 169615 0 0 3 0x14200 bored softnet4 98245 315485 0 0 3 0x14200 bored softnet3 81560 200611 0 0 3 0x14200 bored softnet2 94527 450065 0 0 3 0x14200 bored softnet1 9000 412445 0 0 3 0x14200 bored softnet0 5299 118946 0 0 3 0x14200 bored systqmp 60122 341225 0 0 3 0x14200 bored systq 79933 467888 0 0 3 0x14200 tmoslp softclockmp 98690 38648 0 0 3 0x40014200 tmoslp softclock 87664 484034 0 0 3 0x40014200 idle0 1 498994 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &vioq->viq_rxmtx r = 0 (0xffff8000001a0db0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 vio_rx_intr+0x82 sys/dev/pv/if_vio.c:1569 #4 vio_queue_intr+0x59 sys/dev/pv/if_vio.c:911 #5 intr_handler+0x125 sys/arch/amd64/amd64/intr.c:563 #6 Xintr_ioapic_edge26_untramp+0x18f #7 mtx_enter+0xc1 sys/kern/kern_lock.c:264 #8 endtsleep+0x39 sys/kern/kern_synch.c:538 #9 timeout_run+0x13d sys/kern/kern_timeout.c:698 #10 softclock_process_tick_timeout+0x232 sys/kern/kern_timeout.c:756 #11 softclock+0x152 sys/kern/kern_timeout.c:788 #12 softintr_dispatch+0x13b sys/kern/kern_softintr.c:84 #13 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #14 Xsoftclock+0x27 #15 mtx_enter+0x105 sys/kern/kern_lock.c:273 #16 futex_wake+0x246 futex_list_wakeup sys/kern/sys_futex.c:340 [inline] #16 futex_wake+0x246 sys/kern/sys_futex.c:476 #17 sys_futex+0x1c5 sys/kern/sys_futex.c:154 #18 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #18 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 shared mutex timeout r = 0 (0xffffffff837a9730) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 timeout_run+0x115 sys/kern/kern_timeout.c:694 #2 softclock_process_tick_timeout+0x232 sys/kern/kern_timeout.c:756 #3 softclock+0x152 sys/kern/kern_timeout.c:788 #4 softintr_dispatch+0x13b sys/kern/kern_softintr.c:84 #5 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #6 Xsoftclock+0x27 #7 mtx_enter+0x105 sys/kern/kern_lock.c:273 #8 futex_wake+0x246 futex_list_wakeup sys/kern/sys_futex.c:340 [inline] #8 futex_wake+0x246 sys/kern/sys_futex.c:476 #9 sys_futex+0x1c5 sys/kern/sys_futex.c:154 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 CPU 1: exclusive mutex &sched_lock r = 0 (0xffffffff838c8b88) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 sleep_finish+0x1d6 sys/kern/kern_synch.c:355 #4 sys_futex+0xa99 futex_wait sys/kern/sys_futex.c:301 [inline] #4 sys_futex+0xa99 sys/kern/sys_futex.c:151 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #6 Xsyscall+0x128 Process 62628 (syz-executor) thread 0xffff80003c47aa98 (342181) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8394d310) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 #2 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #3 Xsoftclock+0x27 #4 mtx_enter+0x105 sys/kern/kern_lock.c:273 #5 futex_wake+0x246 futex_list_wakeup sys/kern/sys_futex.c:340 [inline] #5 futex_wake+0x246 sys/kern/sys_futex.c:476 #6 sys_futex+0x1c5 sys/kern/sys_futex.c:154 #7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #8 Xsyscall+0x128 exclusive rwlock futexlk r = 0 (0xffffffff839849e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 futex_wake+0xbc sys/kern/sys_futex.c:461 #3 sys_futex+0x1c5 sys/kern/sys_futex.c:154 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10257 11105K 11573K 166960K 11675 0 pcb 17 12K 12K 166960K 54 0 rtable 214 8K 9K 166960K 317 0 pf 36 17K 21K 166960K 63 0 ifaddr 41 7K 7K 166960K 53 0 ifgroup 59 2K 2K 166960K 69 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1511 0 iov 1 16K 16K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1369 86K 86K 166960K 1610 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 329 0 sigio 0 0K 0K 166960K 3 0 proc 72 115K 164K 166960K 555 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 31 0 in_multi 88 6K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 1 0 mrt 2 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 390 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 168K 181K 166960K 4641 0 UVM aobj 13 2K 2K 166960K 13 0 pinsyscall 43 86K 104K 166960K 1447 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 13 0K 1K 166960K 34 0 temp 44 8639K 8705K 166960K 13151 0 kqueue 15 24K 32K 166960K 66 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 59 0 56 1 0 1 1 0 8 0 rtentry 176 100 0 10 5 0 5 5 0 8 0 unpcb 144 143 0 122 2 0 2 2 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 53 0 47 1 0 1 1 0 8 0 arp 128 12 0 1 1 0 1 1 0 8 0 inpcb 328 211 0 201 2 0 2 2 0 8 0 nd6 144 17 0 2 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 8 0 8 1 0 1 1 0 8 1 pffrag 232 3 0 1 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 2 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 47 0 0 1 0 1 1 0 8 0 pfstkey 128 47 0 0 2 0 2 2 0 8 0 pfstate 384 47 0 0 5 0 5 5 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 440 0 42 28 0 28 28 0 8 1 art_table 40 442 0 42 5 0 5 5 0 8 0 art_node 32 100 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 8 0 1 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1938 0 434 96 0 96 96 0 8 1 ffsino 296 1938 0 434 117 0 117 117 0 8 0 nchpl 144 2405 0 717 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 2194 0 0 45 0 45 45 0 8 0 vnodes 216 2194 0 0 122 0 122 122 0 8 0 namei 1024 8014 0 8014 2 0 2 2 0 8 2 percpumem 16 58 0 8 1 0 1 1 0 8 0 kstatmem 264 40 0 10 3 0 3 3 0 8 1 scxspl 216 8708 0 8708 10 2 8 8 1 8 8 plimitpl 152 64 0 45 1 0 1 1 0 8 0 sigapl 424 662 0 588 9 0 9 9 0 8 0 knotepl 120 404 0 0 13 0 13 13 0 8 0 kqueuepl 224 80 0 68 2 0 2 2 0 8 1 pipepl 344 121 0 94 3 0 3 3 0 8 0 fdescpl 528 620 0 588 3 0 3 3 0 8 0 filepl 160 2674 0 2415 14 0 14 14 0 8 3 lockfpl 104 208 0 206 2 0 2 2 0 8 1 lockfspl 48 37 0 35 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 291 0 277 1 0 1 1 0 8 0 zombiepl 144 589 0 588 1 0 1 1 0 8 0 processpl 1248 662 0 588 6 0 6 6 0 8 0 procpl 664 1001 0 917 8 0 8 8 0 8 0 sockpl 752 423 0 389 5 0 5 5 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 172 0 0 11 0 11 11 0 8 0 bufpl 280 3488 0 125 241 0 241 241 0 8 0 anonpl 32 5438 0 0 44 0 44 44 0 246 0 amapchunkpl 152 14395 0 13851 30 3 27 27 0 158 5 amappl16 200 2184 0 2155 5 2 3 5 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 163 0 150 1 0 1 1 0 8 0 amappl13 176 7 0 7 2 1 1 1 0 8 1 amappl12 168 1276 0 1244 3 1 2 2 0 8 0 amappl11 160 77 0 63 1 0 1 1 0 8 0 amappl10 152 24 0 24 1 1 0 1 0 8 0 amappl9 144 282 0 282 1 1 0 1 0 8 0 amappl8 136 36 0 33 1 0 1 1 0 8 0 amappl7 128 133 0 121 1 0 1 1 0 8 0 amappl6 120 187 0 184 1 0 1 1 0 8 0 amappl5 112 121 0 112 1 0 1 1 0 8 0 amappl4 104 313 0 293 1 0 1 1 0 8 0 amappl3 96 2595 0 2470 4 0 4 4 0 8 0 amappl2 88 658 0 594 2 0 2 2 0 8 0 amappl1 80 9645 0 9045 15 0 15 15 0 8 1 amappl 88 3903 0 3724 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 620 0 588 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 620 0 588 1 0 1 1 0 8 0 vmmpekpl 168 6793 0 6763 2 0 2 2 0 8 0 vmmpepl 168 46196 0 44155 96 0 96 96 0 357 7 vmsppl 488 619 0 588 5 0 5 5 0 8 0 rwobjpl 80 17402 0 14248 65 0 65 65 0 8 0 pdppl 4096 1247 0 1176 103 30 73 87 0 8 2 pvpl 32 11698 0 0 95 0 95 95 0 265 0 pmappl 256 619 0 588 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 274 0 32 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8383fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 mtx_enter(ffffffff838c8b78) at mtx_enter+0xd2 sys/kern/kern_lock.c:264 wakeup_n(ffff80000002c000,1) at wakeup_n+0x54 sys/kern/kern_synch.c:579 task_add(ffff80000002c000,ffff800000039530) at task_add+0x163 sys/kern/kern_task.c:372 ifiq_input(ffff8000000394c0,ffff80003c484ff8) at ifiq_input+0x4af sys/net/ifq.c:784 vio_rxeof(ffff8000001a0d00) at vio_rxeof+0x41d sys/dev/pv/if_vio.c:1555 vio_rx_intr(ffff80000019f800) at vio_rx_intr+0x98 sys/dev/pv/if_vio.c:1571 vio_queue_intr(ffff8000001a0d00) at vio_queue_intr+0x59 sys/dev/pv/if_vio.c:911 intr_handler(ffff80003c4851a0,ffff800000079d00) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:563 Xintr_ioapic_edge26_untramp() at Xintr_ioapic_edge26_untramp+0x18f mtx_enter(ffffffff838c8b78) at mtx_enter+0xc1 sys/kern/kern_lock.c:264 endtsleep(ffff8000ffff3238) at endtsleep+0x39 sys/kern/kern_synch.c:538 timeout_run(ffffffff837a9788,ffff8000ffff32d0) at timeout_run+0x13d sys/kern/kern_timeout.c:698 softclock_process_tick_timeout(ffff8000ffff32d0,0) at softclock_process_tick_timeout+0x232 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0x13b sys/kern/kern_softintr.c:84 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 mtx_enter(ffffffff838c8b78) at mtx_enter+0x105 sys/kern/kern_lock.c:273 futex_wake(ffff80003c47aa98,f8cf3a26d30,7fffffff,80,ffff80003c485780) at futex_wake+0x246 futex_list_wakeup sys/kern/sys_futex.c:340 [inline] futex_wake(ffff80003c47aa98,f8cf3a26d30,7fffffff,80,ffff80003c485780) at futex_wake+0x246 sys/kern/sys_futex.c:476 sys_futex(ffff80003c47aa98,ffff80003c485830,ffff80003c485780) at sys_futex+0x1c5 sys/kern/sys_futex.c:154 syscall(ffff80003c485830) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c485830) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7875cb35e1e0, count: -25 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffff8000299eee08,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 mtx_enter(ffff8000299eedf8) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_cancel(ffff8000299ee2f8) at clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 mi_switch() at mi_switch+0x16f sys/kern/sched_bsd.c:378 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 sys_futex(ffff8000ffff3768,ffff80003c475c30,ffff80003c475b80) at sys_futex+0xa99 futex_wait sys/kern/sys_futex.c:301 [inline] sys_futex(ffff8000ffff3768,ffff80003c475c30,ffff80003c475b80) at sys_futex+0xa99 sys/kern/sys_futex.c:151 syscall(ffff80003c475c30) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c475c30) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf8cd7642ce0, count: -9