witness: lock order reversal: 1st 0xffffffff82d0ad08 &sched_lock (&sched_lock) 2nd 0xffff8000ffff4558 &pr->ps_mtx (&pr->ps_mtx) lock order "&pr->ps_mtx"(mutex) -> "&sched_lock"(sched_lock) first seen at: #0 __mp_lock+0xa2 read_rflags machine/cpufunc.h:195 [inline] #0 __mp_lock+0xa2 intr_disable machine/cpufunc.h:216 [inline] #0 __mp_lock+0xa2 sys/kern/kern_lock.c:142 #1 donice+0x178 sys/kern/kern_resource.c:218 #2 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #2 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #3 Xsyscall+0x128 lock order "&sched_lock"(sched_lock) -> "&pr->ps_mtx"(mutex) first seen at: #0 mtx_enter+0x3e sys/kern/kern_lock.c:265 #1 single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] #1 single_thread_set+0x35a sys/kern/kern_sig.c:2155 #2 sigexit+0x90 sys/kern/kern_sig.c:1562 #3 postsig+0x4a9 sys/kern/kern_sig.c:1494 #4 userret+0x16e sys/kern/kern_sig.c:1987 #5 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #5 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #6 Xsyscall+0x128 Stopped at db_enter+0x1c: 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000ffff4558,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff8000ffff4558,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff8000ffff4548) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff8000212932a0,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000212932a0,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000212932a0,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000212932a0,6,ffff80002fe45948) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000212932a0) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff80002fe45a80) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff80002fe45a80) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5bf99926090, count: -9 ddb{1}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be63 rbp 0xffff80002fe45650 rbx 0x3 rdx 0xffff800000d18c80 rcx 0xffff8000212932a0 rax 0x3ffff acpi_pdirpa+0x2be62 r8 0xffff80002fe455c0 r9 0x8080808080808080 r10 0xdfbc1c62a0534be2 r11 0x256b5e3901c631aa r12 0xfffffd8003a0a7a0 r13 0 r14 0xfffffd80039f7030 r15 0xfffffd80031c7bc0 rip 0xffffffff81334fdc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002fe45640 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.7) pid=196657 stat=onproc flags process=500010 proc=4002000 pri=32, usrpri=62, nice=20 forw=0xffffffffffffffff, list=0xffff800021293a98,0xffffffff82c89948 process=0xffff8000ffff4448 user=0xffff80002fe40000, vmspace=0xfffffd806bac9928 estcpu=12, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86338 304817 86732 32767 3 0x90 nanoslp syz-executor.0 86338 320714 86732 32767 3 0x4000090 fsleep syz-executor.0 58695 369628 8919 32767 2 0x10 syz-executor.2 50514 215306 4558 32767 4 0x582010 syz-executor.7 *50514 196657 4558 32767 7 0x4502010 syz-executor.7 86051 38999 83901 32767 2 0x10 syz-executor.1 8867 510748 94296 32767 2 0x10 syz-executor.6 34207 484899 29927 32767 2 0x10 syz-executor.5 41498 421417 67892 32767 7 0x10 syz-executor.3 94296 160575 55335 32767 3 0x90 nanoslp syz-executor.6 55335 460304 38598 0 3 0x82 wait syz-executor.6 8919 513146 77696 32767 2 0x10 syz-executor.2 77696 253010 38598 0 3 0x82 wait syz-executor.2 14775 58756 0 0 3 0x14200 bored sosplice 86732 322887 95744 32767 3 0x90 nanoslp syz-executor.0 95744 312575 38598 0 3 0x82 wait syz-executor.0 29927 8849 87424 32767 3 0x90 nanoslp syz-executor.5 4558 208948 37708 32767 3 0x90 nanoslp syz-executor.7 14565 308191 78148 32767 3 0x10 biowait syz-executor.4 37708 92505 38598 0 3 0x82 wait syz-executor.7 67892 430179 30251 32767 3 0x90 nanoslp syz-executor.3 87424 329816 38598 0 3 0x82 wait syz-executor.5 30251 456921 38598 0 3 0x82 wait syz-executor.3 17330 120678 78076 0 3 0x100082 netio arp 83901 222193 63323 32767 3 0x90 nanoslp syz-executor.1 78148 130859 38598 0 3 0x82 wait syz-executor.4 78076 193347 66075 0 3 0x10008a sigsusp sh 63323 22063 38598 0 3 0x82 wait syz-executor.1 66075 321382 1 0 3 0x80 wait syz-executor.0 38598 383420 94311 0 2 0x2000002 syz-fuzzer 38598 382324 94311 0 3 0x6000082 nanoslp syz-fuzzer 38598 352471 94311 0 3 0x6000082 wait syz-fuzzer 38598 439735 94311 0 3 0x6000082 wait syz-fuzzer 38598 179191 94311 0 3 0x6000082 wait syz-fuzzer 38598 294938 94311 0 3 0x6000082 thrsleep syz-fuzzer 38598 33644 94311 0 3 0x6000082 thrsleep syz-fuzzer 38598 441802 94311 0 3 0x6000082 wait syz-fuzzer 38598 439595 94311 0 3 0x6000082 wait syz-fuzzer 38598 419476 94311 0 3 0x6000082 wait syz-fuzzer 38598 283710 94311 0 3 0x6000082 thrsleep syz-fuzzer 38598 6267 94311 0 3 0x6000082 wait syz-fuzzer 38598 179932 94311 0 3 0x6000082 kqread syz-fuzzer 38598 100465 94311 0 3 0x6000082 wait syz-fuzzer 38598 107150 94311 0 3 0x6000082 thrsleep syz-fuzzer 38598 116681 94311 0 3 0x6000082 thrsleep syz-fuzzer 94311 58601 55468 0 3 0x10008a sigsusp ksh 55468 219972 89144 0 3 0x9a kqread sshd 93351 441725 1 0 3 0x100083 ttyin getty 89144 371474 1 0 3 0x88 kqread sshd 37265 71993 57490 73 3 0x1100090 kqread syslogd 57490 328821 1 0 3 0x100082 netio syslogd 26782 392228 1 0 3 0x100080 kqread resolvd 57240 157528 67485 77 3 0x100092 kqread dhcpleased 88514 184000 67485 77 3 0x100092 kqread dhcpleased 67485 201333 1 0 3 0x80 kqread dhcpleased 38216 342952 0 0 3 0x14200 bored smr 57964 440733 0 0 2 0x14200 zerothread 64917 84978 0 0 3 0x14200 aiodoned aiodoned 29728 495506 0 0 3 0x14200 syncer update 61705 509775 0 0 3 0x14200 cleaner cleaner 78037 80611 0 0 3 0x14200 reaper reaper 29746 440089 0 0 3 0x14200 pgdaemon pagedaemon 9349 290511 0 0 3 0x14200 bored viomb 10447 523480 0 0 3 0x40014200 acpi0 acpi0 7068 341264 0 0 3 0x40014200 idle1 21900 207915 0 0 3 0x14200 bored softnet3 51538 283588 0 0 3 0x14200 bored softnet2 7152 22452 0 0 3 0x14200 bored softnet1 97666 28400 0 0 3 0x14200 bored softnet0 2164 131408 0 0 3 0x14200 bored systqmp 80661 377236 0 0 3 0x14200 bored systq 85375 215671 0 0 3 0x40014200 bored softclock 62420 387652 0 0 3 0x40014200 idle0 1 477751 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82d0aa18) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 uvm_pmr_getpages+0xeac sys/uvm/uvm_pmemrange.c:1205 #4 uvm_pagealloc+0x1a8 sys/uvm/uvm_page.c:910 #5 pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 #6 pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 #7 uvm_fault_lower+0x768 sys/uvm/uvm_fault.c:1518 #8 uvm_fault+0x238 #9 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #10 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #11 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd8067e84bb0) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c3 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:423 [inline] #3 pmap_enter+0x1c3 sys/arch/amd64/amd64/pmap.c:2710 #4 uvm_fault_lower+0x768 sys/uvm/uvm_fault.c:1518 #5 uvm_fault+0x238 #6 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d0ad08) #0 witness_lock+0x447 #1 single_thread_set+0x179 sys/kern/kern_sig.c:2113 #2 sigexit+0x90 sys/kern/kern_sig.c:1562 #3 postsig+0x4a9 sys/kern/kern_sig.c:1494 #4 userret+0x16e sys/kern/kern_sig.c:1987 #5 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #5 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #6 Xsyscall+0x128 Process 50514 (syz-executor.7) thread 0xffff8000212932a0 (196657) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c795f0) #0 witness_lock+0x447 #1 postsig+0x49e sys/kern/kern_sig.c:1500 #2 userret+0x16e sys/kern/kern_sig.c:1987 #3 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #3 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #4 Xsyscall+0x128 exclusive sched_lock &sched_lock r = 0 (0xffffffff82d0ad08) #0 witness_lock+0x447 #1 single_thread_set+0x179 sys/kern/kern_sig.c:2113 #2 sigexit+0x90 sys/kern/kern_sig.c:1562 #3 postsig+0x4a9 sys/kern/kern_sig.c:1494 #4 userret+0x16e sys/kern/kern_sig.c:1987 #5 syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] #5 syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 #6 Xsyscall+0x128 Process 41498 (syz-executor.3) thread 0xffff800021225808 (421417) exclusive rwlock uobjlk r = 0 (0xfffffd807efb0a58) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_lower_lookup+0x4a sys/uvm/uvm_fault.c:1126 #3 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #4 uvm_fault+0x238 #5 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8067e85690) #0 witness_lock+0x447 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 Process 14565 (syz-executor.4) thread 0xffff80002128a000 (308191) exclusive rrwlock inode r = 0 (0xfffffd807153b918) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80689ff1b0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 6413K 6420K 78643K 11320 0 pcb 13 10K 12K 78643K 15 0 rtable 240 6K 7K 78643K 626 0 pf 29 8K 8K 78643K 41 0 ifaddr 44 15K 15K 78643K 70 0 ifgroup 50 2K 2K 78643K 74 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 72 0 ioctlops 0 0K 2K 78643K 156 0 iov 0 0K 24K 78643K 2047 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1292 81K 81K 78643K 5248 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 100 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1406 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 28 105K 121K 78643K 7598 0 sigio 0 0K 0K 78643K 1079 0 proc 56 78K 103K 78643K 1021 0 subproc 117 7K 7K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 5887 0 in_multi 99 7K 7K 78643K 195 0 ether_multi 1 0K 0K 78643K 1 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 271 1208K 1208K 78643K 271 0 exec 0 0K 1K 78643K 1742 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 405 99K 109K 78643K 77411 0 UVM aobj 131 6K 6K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 231 0 NDP 11 0K 1K 78643K 43 0 temp 78 5916K 5996K 78643K 21022 0 kqueue 13 20K 34K 78643K 700 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 349 0 345 7 6 1 5 0 8 0 rtentry 112 186 0 73 4 0 4 4 0 8 0 unpcb 144 5473 0 5460 78 71 7 10 0 8 6 syncache 304 76 0 76 15 14 1 1 0 8 1 tcpqe 32 87 0 87 14 13 1 1 0 8 1 tcpcb 808 4692 0 4660 115 109 6 16 0 8 1 arp 120 30 0 12 1 0 1 1 0 8 0 ipq 40 14 0 13 7 6 1 1 0 8 0 ipqe 40 50 0 49 7 6 1 1 0 8 0 inpcb 368 6646 0 6611 101 95 6 15 0 8 0 nd6 136 55 0 28 1 0 1 1 0 8 0 kcovpl 48 14 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 773 0 311 35 6 29 30 0 8 0 art_table 32 774 0 311 4 0 4 4 0 8 0 art_node 16 185 0 82 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 3 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 1400 0 1390 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13728 0 12277 91 0 91 91 0 8 0 ffsino 272 13728 0 12277 97 0 97 97 0 8 0 nchpl 144 23684 0 22046 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 84877 0 84876 5 4 1 3 0 8 0 percpumem 16 49 0 6 1 0 1 1 0 8 0 kstatmem 264 34 0 12 2 0 2 2 0 8 0 scxspl 216 61616 0 61615 38 34 4 8 1 8 3 plimitpl 152 1128 0 1104 20 18 2 2 0 8 0 sigapl 424 7878 0 7821 7 0 7 7 0 8 0 futexpl 64 61564 0 61563 3 2 1 1 0 8 0 knotepl 120 618 0 0 12 1 11 11 0 8 0 kqueuepl 216 1998 0 1989 48 47 1 8 0 8 0 pipepl 320 1860 0 1829 60 57 3 13 0 8 0 fdescpl 496 7860 0 7821 7 1 6 6 0 8 0 filepl 152 59750 0 59499 145 128 17 22 0 8 7 lockfpl 104 1594 0 1592 1 0 1 1 0 8 0 lockfspl 48 623 0 621 1 0 1 1 0 8 0 sessionpl 144 29 0 12 1 0 1 1 0 8 0 pgrppl 48 742 0 725 1 0 1 1 0 8 0 ucredpl 104 20466 0 20448 1 0 1 1 0 8 0 zombiepl 144 7821 0 7821 2 1 1 1 0 8 1 processpl 1072 7878 0 7821 5 1 4 5 0 8 0 procpl 680 21735 0 21661 8 0 8 8 0 8 0 sosppl 168 79 0 79 14 14 0 1 0 8 0 sockpl 488 12830 0 12778 311 295 16 35 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 23 0 0 3 0 3 3 0 8 0 mcl2k2 2112 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 364 0 0 33 14 19 33 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 1479 0 0 60 0 60 60 0 8 0 bufpl 288 16026 0 9697 453 0 453 453 0 8 0 anonpl 24 796725 0 785229 160 81 79 97 0 186 1 amapchunkpl 152 244327 0 243478 107 66 41 47 0 158 1 amappl16 200 15786 0 15494 62 45 17 29 0 8 0 amappl15 192 15 0 14 2 1 1 1 0 8 0 amappl14 184 178 0 160 2 0 2 2 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 8568 0 8530 2 0 2 2 0 8 0 amappl11 160 62 0 51 1 0 1 1 0 8 0 amappl10 152 58 0 45 1 0 1 1 0 8 0 amappl9 144 271 0 270 1 0 1 1 0 8 0 amappl8 136 559 0 425 5 0 5 5 0 8 0 amappl7 128 95 0 82 2 0 2 2 0 8 0 amappl6 120 347 0 329 2 1 1 2 0 8 0 amappl5 112 358 0 349 1 0 1 1 0 8 0 amappl4 104 707 0 664 3 1 2 3 0 8 0 amappl3 96 48389 0 48304 24 20 4 4 0 8 1 amappl2 88 8443 0 8369 3 1 2 3 0 8 0 amappl1 80 35637 0 35078 22 9 13 22 0 8 0 amappl 88 76606 0 76358 8 0 8 8 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 7860 0 7821 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7860 0 7821 1 0 1 1 0 8 0 vmmpekpl 168 64764 0 64689 4 0 4 4 0 8 0 vmmpepl 168 465149 0 462619 222 105 117 129 0 357 0 vmsppl 464 7859 0 7821 7 1 6 6 0 8 0 rwobjpl 56 122871 0 115404 117 8 109 110 0 8 0 pdppl 4096 15728 0 15642 424 338 86 94 0 8 0 pvpl 32 2237607 0 2219752 486 319 167 351 0 265 13 pmappl 248 7859 0 7821 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1442 0 569 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82c29ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d0ab00) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d0ab00) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffffffff82d0a884,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 uvm_pmr_getpages(1,0,0,1,0,1,9b8807f1ecfbe329,0) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(fffffd8067e84bf0,2067000,0,3) at uvm_pagealloc+0x1a8 sys/uvm/uvm_page.c:910 pmap_get_ptp(fffffd8067e84ba0,819d50fe000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd8067e84ba0,819d50fe000,76a26000,1,21) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_lower(ffff80002654f530,ffff80002654f568,ffff80002654f4b0,0) at uvm_fault_lower+0x768 sys/uvm/uvm_fault.c:1518 uvm_fault(fffffd8067e85598,819d50fe000,0,1) at uvm_fault+0x238 upageflttrap(ffff80002654f6b0,819d50fe04c) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002654f6b0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7365fb98acd0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000ffff4558,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff8000ffff4558,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff8000ffff4548) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff8000212932a0,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000212932a0,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000212932a0,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000212932a0,6,ffff80002fe45948) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000212932a0) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff80002fe45a80) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff80002fe45a80) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5bf99926090, count: -9