witness: lock order reversal: 1st 0xffffffff82ce5ec8 &sched_lock (&sched_lock) 2nd 0xffff80002130d1e8 &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(ffff80002130d1e8,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff80002130d1e8,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff80002130d1d8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff800021299548,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff800021299548,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff800021299548,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff800021299548,6,ffff800024739348) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff800021299548) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff800024739480) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff800024739480) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8ae9687a290, count: -9 ddb{1}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be63 rbp 0xffff800024739050 rbx 0x3 rdx 0xffff800000d2a9c0 rcx 0xffff800021299548 rax 0x3ffff acpi_pdirpa+0x2be62 r8 0xffff800024738fc0 r9 0x8080808080808080 r10 0xcf0ab3e960a8d3ea r11 0x37358e2ae7deecdf r12 0xfffffd8003a0b9b0 r13 0 r14 0xfffffd80039fc5a0 r15 0xfffffd80031c8bc0 rip 0xffffffff8224dbac db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800024739040 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.6) pid=446551 stat=onproc flags process=500000 proc=4002000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800021299a98,0xffff8000212982c0 process=0xffff80002130d0d8 user=0xffff800024734000, vmspace=0xfffffd80698ed3b8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 15595 400942 21806 0 2 0 syz-executor.5 15595 437146 21806 0 3 0x4000000 biowait syz-executor.5 1499 279058 6361 0 2 0 syz-executor.1 1499 229030 6361 0 2 0x4000000 syz-executor.1 18826 252835 23027 0 4 0x582000 syz-executor.6 *18826 446551 23027 0 7 0x4502000 syz-executor.6 68497 62050 83732 0 7 0 syz-executor.2 68497 269046 83732 0 2 0x4000080 syz-executor.2 82525 257979 77896 0 2 0 syz-executor.0 58777 392587 5943 0 2 0 syz-executor.7 58777 194074 5943 0 3 0x4000080 fsleep syz-executor.7 58777 475771 5943 0 3 0x4000080 bell syz-executor.7 58777 182042 5943 0 3 0x4000080 fsleep syz-executor.7 21806 378288 89720 0 3 0x82 nanoslp syz-executor.5 89913 25422 0 0 3 0x14200 bored sosplice 6361 240198 89720 0 3 0x82 nanoslp syz-executor.1 3337 238212 0 0 3 0x14280 nfsidl nfsio 47700 325581 0 0 3 0x14280 nfsidl nfsio 84257 153829 0 0 3 0x14280 nfsidl nfsio 28164 266944 0 0 3 0x14280 nfsidl nfsio 67992 25102 0 0 3 0x14280 nfsidl nfsio 51229 102885 0 0 3 0x14280 nfsidl nfsio 30682 451831 0 0 3 0x14280 nfsidl nfsio 49173 224700 0 0 3 0x14280 nfsidl nfsio 31886 38180 0 0 3 0x14280 nfsidl nfsio 59485 4608 0 0 3 0x14280 nfsidl nfsio 59131 205209 0 0 3 0x14280 nfsidl nfsio 31616 411524 0 0 3 0x14280 nfsidl nfsio 83231 64968 0 0 3 0x14280 nfsidl nfsio 69598 358611 0 0 3 0x14280 nfsidl nfsio 46682 5823 0 0 3 0x14280 nfsidl nfsio 9081 369020 0 0 3 0x14280 nfsidl nfsio 9799 437010 0 0 3 0x14280 nfsidl nfsio 32530 48806 0 0 3 0x14280 nfsidl nfsio 73892 97529 0 0 3 0x14280 nfsidl nfsio 22378 310252 0 0 3 0x14280 nfsidl nfsio 68935 7133 0 0 3 0x14200 acct acct 5943 450368 89720 0 3 0x82 nanoslp syz-executor.7 23027 40955 89720 0 3 0x82 nanoslp syz-executor.6 71335 7061 89720 0 2 0x2 syz-executor.4 18248 517712 89720 0 3 0x2 biowait syz-executor.3 83732 223510 89720 0 3 0x82 nanoslp syz-executor.2 77896 275927 89720 0 2 0x2 syz-executor.0 89720 97243 29098 0 3 0x2000082 wait syz-fuzzer 89720 484950 29098 0 3 0x6000082 nanoslp syz-fuzzer 89720 2292 29098 0 2 0x6000002 syz-fuzzer 89720 434683 29098 0 3 0x6000082 wait syz-fuzzer 89720 193884 29098 0 3 0x6000082 wait syz-fuzzer 89720 437023 29098 0 3 0x6000082 wait syz-fuzzer 89720 234479 29098 0 3 0x6000082 wait syz-fuzzer 89720 336125 29098 0 3 0x6000082 thrsleep syz-fuzzer 89720 236239 29098 0 3 0x6000082 thrsleep syz-fuzzer 89720 405152 29098 0 3 0x6000082 wait syz-fuzzer 89720 183901 29098 0 3 0x6000082 thrsleep syz-fuzzer 89720 469652 29098 0 3 0x6000082 wait syz-fuzzer 89720 289108 29098 0 3 0x6000082 thrsleep syz-fuzzer 89720 286853 29098 0 3 0x6000082 kqread syz-fuzzer 89720 383617 29098 0 3 0x6000082 wait syz-fuzzer 89720 177626 29098 0 3 0x6000082 thrsleep syz-fuzzer 29098 463966 71240 0 3 0x10008a sigsusp ksh 71240 274704 58367 0 3 0x9a kqread sshd 72264 22985 1 0 3 0x100083 ttyin getty 58367 504319 1 0 3 0x88 kqread sshd 72791 502198 92277 74 3 0x1100092 bpf pflogd 92277 177029 1 0 3 0x80 netio pflogd 39226 250151 9560 73 3 0x1100090 kqread syslogd 9560 174737 1 0 3 0x100082 netio syslogd 4051 301289 1 0 3 0x100080 kqread resolvd 69868 415418 35858 77 3 0x100092 kqread dhcpleased 8162 241389 35858 77 3 0x100092 kqread dhcpleased 35858 195552 1 0 3 0x80 kqread dhcpleased 87041 309180 0 0 3 0x14200 bored smr 92567 176026 0 0 2 0x14200 zerothread 64778 87254 0 0 3 0x14200 aiodoned aiodoned 51848 33019 0 0 3 0x14200 syncer update 44902 170235 0 0 3 0x14200 cleaner cleaner 79861 287057 0 0 3 0x14200 reaper reaper 25377 202745 0 0 3 0x14200 pgdaemon pagedaemon 97267 167213 0 0 3 0x14200 bored viomb 88488 493448 0 0 3 0x40014200 acpi0 acpi0 35970 210419 0 0 3 0x40014200 idle1 37327 288541 0 0 3 0x14200 bored softnet3 21793 186299 0 0 3 0x14200 bored softnet2 67587 288011 0 0 3 0x14200 bored softnet1 87561 231452 0 0 3 0x14200 bored softnet0 43330 295721 0 0 3 0x14200 bored systqmp 83842 134494 0 0 3 0x14200 bored systq 51621 492409 0 0 3 0x40014200 bored softclock 92065 79141 0 0 3 0x40014200 idle0 1 230214 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82ce5ec8) #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 15595 (syz-executor.5) thread 0xffff8000211d9d50 (437146) exclusive rrwlock inode r = 0 (0xfffffd80723eb928) #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_makeinode+0xb2 sys/ufs/ufs/ufs_vnops.c:1817 #8 ufs_create+0x45 sys/ufs/ufs/ufs_vnops.c:151 #9 VOP_CREATE+0xc0 sys/kern/vfs_vops.c:103 #10 vn_open+0x27b sys/kern/vfs_vnops.c:116 #11 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80670891b0) #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 vn_open+0x17b sys/kern/vfs_vnops.c:107 #8 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #9 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #9 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #10 Xsyscall+0x128 Process 18826 (syz-executor.6) thread 0xffff800021299548 (446551) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c86138) #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 (0xffffffff82ce5ec8) #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 18248 (syz-executor.3) thread 0xffff8000211f5010 (517712) exclusive rrwlock inode r = 0 (0xfffffd8072c7a3d0) #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 (0xfffffd80723ebb48) #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 10204 6484K 6863K 78643K 12901 0 pcb 14 12K 17K 78643K 1117 0 rtable 241 7K 7K 78643K 481 0 pf 32 9K 10K 78643K 61 0 ifaddr 45 15K 15K 78643K 67 0 ifgroup 55 2K 2K 78643K 91 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 36K 78643K 78 0 ioctlops 0 0K 4K 78643K 1570 0 iov 0 0K 12K 78643K 56 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1349 84K 84K 78643K 1843 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 338 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 1507 0 sigio 0 0K 0K 78643K 30 0 proc 69 91K 115K 78643K 673 0 subproc 104 6K 6K 78643K 143 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 24 0 in_multi 99 7K 7K 78643K 142 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 115 519K 519K 78643K 115 0 exec 0 0K 1K 78643K 709 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 346 86K 99K 78643K 17015 0 UVM aobj 101 3K 3K 78643K 101 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 42 0 NDP 12 0K 1K 78643K 43 0 temp 42 5912K 6038K 78643K 18474 0 kqueue 12 18K 24K 78643K 105 0 SYN cache 2 16K 24K 78643K 3 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 59 0 56 1 0 1 1 0 8 0 rtentry 112 152 0 40 4 0 4 4 0 8 0 unpcb 144 697 0 682 14 13 1 6 0 8 0 syncache 304 10 0 10 3 3 0 1 0 8 0 tcpqe 32 759 0 759 3 3 0 2 0 8 0 tcpcb 808 177 0 173 4 3 1 4 0 8 0 arp 120 25 0 6 1 0 1 1 0 8 0 inpcb 368 1641 0 1633 24 22 2 13 0 8 1 nd6 136 37 0 12 1 0 1 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 pffrag 232 11 0 4 1 0 1 1 0 482 0 pffrnode 88 11 0 4 1 0 1 1 0 8 0 pffrent 40 126 0 119 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 pfstitem 24 76 0 52 1 0 1 1 0 8 0 pfstkey 128 76 0 52 2 0 2 2 0 8 0 pfstate 376 76 0 52 4 0 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 610 0 153 29 0 29 29 0 8 0 art_table 32 611 0 153 4 0 4 4 0 8 0 art_node 16 148 0 46 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 336 0 326 1 0 1 1 0 8 0 shmpl 112 98 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3222 0 1767 92 0 92 92 0 8 0 ffsino 272 3222 0 1767 98 0 98 98 0 8 0 nchpl 144 5217 0 4691 63 40 23 63 0 8 0 uvmvnodes 80 3703 0 0 76 0 76 76 0 8 0 vnodes 216 3703 0 0 206 0 206 206 0 8 0 namei 1024 18040 0 18038 3 2 1 2 0 8 0 percpumem 16 52 0 9 1 0 1 1 0 8 0 vmpool 696 3 0 3 1 1 0 1 0 8 0 kstatmem 264 42 0 18 2 0 2 2 0 8 0 scxspl 216 16566 0 16564 15 13 2 8 1 8 1 plimitpl 152 205 0 189 1 0 1 1 0 8 0 sigapl 424 1846 0 1778 10 2 8 8 0 8 0 futexpl 64 9386 0 9384 1 0 1 1 0 8 0 knotepl 120 248 0 0 8 0 8 8 0 8 0 kqueuepl 216 151 0 143 1 0 1 1 0 8 0 pipepl 320 278 0 250 6 3 3 6 0 8 0 fdescpl 496 1807 0 1778 5 1 4 5 0 8 0 filepl 152 9237 0 8992 33 23 10 20 0 8 0 lockfpl 104 251 0 248 1 0 1 1 0 8 0 lockfspl 48 119 0 116 1 0 1 1 0 8 0 sessionpl 144 27 0 10 1 0 1 1 0 8 0 pgrppl 48 134 0 117 1 0 1 1 0 8 0 ucredpl 104 1135 0 1123 1 0 1 1 0 8 0 zombiepl 144 1778 0 1778 2 1 1 1 0 8 1 processpl 1072 1846 0 1778 5 0 5 5 0 8 0 procpl 680 4276 0 4186 12 3 9 9 0 8 0 sosppl 168 10 0 10 2 2 0 1 0 8 0 sockpl 488 2473 0 2447 61 56 5 21 0 8 1 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 298 0 0 37 0 37 37 0 8 0 mtagpl 96 110 0 0 3 0 3 3 0 8 0 mbufpl 256 321 0 0 20 0 20 20 0 8 0 bufpl 288 6441 0 237 444 0 444 444 0 8 0 anonpl 24 312495 0 298726 103 11 92 92 0 186 6 amapchunkpl 152 55300 0 54427 48 9 39 42 0 158 2 amappl16 200 7026 0 6643 21 0 21 21 0 8 0 amappl15 192 19 0 19 1 1 0 1 0 8 0 amappl14 184 164 0 151 2 1 1 2 0 8 0 amappl13 176 10 0 9 1 0 1 1 0 8 0 amappl12 168 2563 0 2532 2 0 2 2 0 8 0 amappl11 160 62 0 48 1 0 1 1 0 8 0 amappl10 152 36 0 25 1 0 1 1 0 8 0 amappl9 144 296 0 295 2 1 1 1 0 8 0 amappl8 136 253 0 188 3 0 3 3 0 8 0 amappl7 128 66 0 54 2 0 2 2 0 8 0 amappl6 120 271 0 251 2 1 1 2 0 8 0 amappl5 112 249 0 236 1 0 1 1 0 8 0 amappl4 104 630 0 585 3 1 2 3 0 8 0 amappl3 96 10787 0 10709 4 1 3 3 0 8 0 amappl2 88 2099 0 2028 3 1 2 3 0 8 0 amappl1 80 15124 0 14572 23 10 13 23 0 8 0 amappl 88 16389 0 16162 6 0 6 6 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 72 100 0 0 2 0 2 2 0 8 0 uaddrrnd 24 1810 0 1781 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1810 0 1781 1 0 1 1 0 8 0 vmmpekpl 168 19095 0 19049 4 1 3 3 0 8 0 vmmpepl 168 127591 0 125294 160 54 106 125 0 357 1 vmsppl 464 1809 0 1781 5 1 4 5 0 8 0 rwobjpl 56 40965 0 35694 77 2 75 75 0 8 0 pdppl 4096 3627 0 3562 165 96 69 83 0 8 4 pvpl 32 742997 0 723299 410 236 174 367 0 265 10 pmappl 248 1809 0 1781 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 943 0 128 24 0 24 24 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82c26ff0) 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(ffffffff82ce5cc0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ce5cc0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:340 ast(ffff800024745580) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff800024745580) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x787a0acf7e80, count: -7 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(ffff80002130d1e8,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff80002130d1e8,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff80002130d1d8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff800021299548,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff800021299548,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff800021299548,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff800021299548,6,ffff800024739348) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff800021299548) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff800024739480) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff800024739480) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8ae9687a290, count: -9