witness: lock order reversal: 1st 0xffffffff82cc8bd0 &sched_lock (&sched_lock) 2nd 0xffff8000ffff8978 &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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000ffff8978,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff8000ffff8978,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff8000ffff8968) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff8000211f5d50,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000211f5d50,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000211f5d50,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000211f5d50,6,ffff80002e4179f8) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000211f5d50) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff80002e417b30) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff80002e417b30) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f5b96451a0, count: -9 ddb{0}> show registers rdi 0x3 rsi 0xffffffff82bf22f0 __sancov_gen_cov_switch_values.134 rbp 0xffff80002e417700 rbx 0x3 rdx 0 rcx 0xffff8000211f5d50 rax 0xffffffff82c05ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002e417670 r9 0x8080808080808080 r10 0x65e80cd7de61e7d9 r11 0x4db4608014b6b8b3 r12 0xfffffd8003a0a7a0 r13 0 r14 0xfffffd80039f7030 r15 0xfffffd80031c7bc0 rip 0xffffffff81b6e27c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e4176f0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.3) pid=153342 stat=onproc flags process=500010 proc=4002000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000211f4ab8,0xffff80002126faa8 process=0xffff8000ffff8868 user=0xffff80002e412000, vmspace=0xfffffd806bc73cc8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 40533 48420 54843 32767 4 0x582010 syz-executor.3 *40533 153342 54843 32767 7 0x4502010 syz-executor.3 40533 285360 54843 32767 4 0x4580090 fsleep syz-executor.3 44899 376033 95234 32767 3 0x90 nanoslp syz-executor.2 44899 240438 95234 32767 3 0x4000090 fsleep syz-executor.2 96210 267561 66391 32767 7 0x10 syz-executor.1 96210 9276 66391 32767 3 0x4000090 fsleep syz-executor.1 66177 33693 93698 32767 2 0x10 syz-executor.5 66177 91494 93698 32767 3 0x4000090 fsleep syz-executor.5 66177 255478 93698 32767 2 0x4000010 syz-executor.5 47108 310614 64484 32767 2 0x10 syz-executor.6 47108 46902 64484 32767 3 0x4000090 fsleep syz-executor.6 95234 105002 64224 32767 3 0x90 nanoslp syz-executor.2 64224 118711 10685 0 3 0x82 wait syz-executor.2 7681 76668 35489 32767 3 0x90 nanoslp syz-executor.7 35489 95006 10685 0 3 0x82 wait syz-executor.7 43526 450885 67266 32767 3 0x10 biowait syz-executor.0 67266 425327 10685 0 3 0x82 wait syz-executor.0 76627 48637 14917 32767 3 0x10 biowait syz-executor.4 14917 415377 10685 0 3 0x82 wait syz-executor.4 52849 48156 0 0 3 0x14200 bored sosplice 64484 26717 12591 32767 3 0x90 nanoslp syz-executor.6 12591 214002 10685 0 3 0x82 wait syz-executor.6 93698 65222 59792 32767 3 0x90 nanoslp syz-executor.5 54843 342677 17797 32767 3 0x90 nanoslp syz-executor.3 59792 403011 10685 0 3 0x82 wait syz-executor.5 17797 514916 10685 0 3 0x82 wait syz-executor.3 66391 418532 64928 32767 3 0x90 nanoslp syz-executor.1 64928 383834 10685 0 3 0x82 wait syz-executor.1 10685 248953 61534 0 3 0x2000082 thrsleep syz-fuzzer 10685 149256 61534 0 3 0x6000082 nanoslp syz-fuzzer 10685 11662 61534 0 3 0x6000082 thrsleep syz-fuzzer 10685 224611 61534 0 3 0x6000082 thrsleep syz-fuzzer 10685 495900 61534 0 3 0x6000082 wait syz-fuzzer 10685 15302 61534 0 3 0x6000082 wait syz-fuzzer 10685 320725 61534 0 3 0x6000082 wait syz-fuzzer 10685 152926 61534 0 3 0x6000082 wait syz-fuzzer 10685 104926 61534 0 3 0x6000082 wait syz-fuzzer 10685 396707 61534 0 3 0x6000082 thrsleep syz-fuzzer 10685 41695 61534 0 3 0x6000082 thrsleep syz-fuzzer 10685 163397 61534 0 3 0x6000082 wait syz-fuzzer 10685 193536 61534 0 3 0x6000082 wait syz-fuzzer 10685 219675 61534 0 3 0x6000082 thrsleep syz-fuzzer 10685 455474 61534 0 3 0x6000082 kqread syz-fuzzer 10685 459081 61534 0 3 0x6000082 wait syz-fuzzer 61534 388848 13262 0 3 0x10008a sigsusp ksh 13262 52312 45513 0 3 0x9a kqread sshd 30871 268142 1 0 3 0x100083 ttyin getty 45513 281519 1 0 3 0x88 kqread sshd 24689 138736 60174 73 3 0x1100090 kqread syslogd 60174 389258 1 0 3 0x100082 netio syslogd 579 372712 1 0 3 0x100080 kqread resolvd 39647 65498 90627 77 3 0x100092 kqread dhcpleased 42165 311135 90627 77 3 0x100092 kqread dhcpleased 90627 343260 1 0 3 0x80 kqread dhcpleased 30805 169124 0 0 3 0x14200 bored smr 92915 479202 0 0 2 0x14200 zerothread 10858 352968 0 0 3 0x14200 aiodoned aiodoned 25828 504835 0 0 3 0x14200 syncer update 87884 261290 0 0 3 0x14200 cleaner cleaner 93524 516897 0 0 3 0x14200 reaper reaper 90364 264588 0 0 3 0x14200 pgdaemon pagedaemon 26012 269194 0 0 3 0x14200 bored viomb 10955 457505 0 0 3 0x40014200 acpi0 acpi0 87104 339523 0 0 3 0x40014200 idle1 13183 193270 0 0 3 0x14200 bored softnet3 73689 70199 0 0 3 0x14200 bored softnet2 16383 403036 0 0 3 0x14200 bored softnet1 26624 433197 0 0 3 0x14200 bored softnet0 31600 415139 0 0 3 0x14200 bored systqmp 68599 366446 0 0 3 0x14200 bored systq 71143 27995 0 0 3 0x40014200 bored softclock 4603 407204 0 0 3 0x40014200 idle0 1 183599 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff82cc8bd0) #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 CPU 1: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82cc9298) #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 uvm_fault_lower+0x1ab #6 uvm_fault+0x238 #7 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 40533 (syz-executor.3) thread 0xffff8000211f5d50 (153342) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ca0228) #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 (0xffffffff82cc8bd0) #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 96210 (syz-executor.1) thread 0xffff800021225a90 (267561) exclusive rwlock amaplk r = 0 (0xfffffd8066726780) #0 witness_lock+0x447 #1 uvm_fault_check+0x41a sys/uvm/uvm_fault.c:782 #2 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #3 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8069bae4b8) #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 43526 (syz-executor.0) thread 0xffff800021224ff0 (450885) exclusive rrwlock inode r = 0 (0xfffffd8067fd2098) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80679444e0) #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 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #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 Process 76627 (syz-executor.4) thread 0xffff80002126eff8 (48637) exclusive rrwlock inode r = 0 (0xfffffd8067fd2e68) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8062bf43d8) #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 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10196 6409K 6420K 78643K 11307 0 pcb 13 12K 14K 78643K 17 0 rtable 242 6K 7K 78643K 882 0 pf 29 8K 8K 78643K 51 0 ifaddr 44 15K 15K 78643K 92 0 ifgroup 50 2K 2K 78643K 94 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 82 0 ioctlops 0 0K 2K 78643K 48 0 iov 0 0K 30K 78643K 323 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1278 80K 80K 78643K 1775 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 63 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1411 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 129K 78643K 5753 0 sigio 0 0K 0K 78643K 40 0 proc 56 78K 115K 78643K 1087 0 subproc 104 6K 6K 78643K 247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 294 0 in_multi 99 7K 7K 78643K 263 0 ether_multi 1 0K 0K 78643K 3 0 mrt 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 1324 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 388 92K 103K 78643K 58163 0 UVM aobj 87 5K 7K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 92 0 NDP 11 0K 2K 78643K 60 0 temp 74 5920K 6000K 78643K 17493 0 kqueue 12 18K 25K 78643K 452 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 277 0 274 4 3 1 3 0 8 0 rtentry 112 241 0 127 4 0 4 4 0 8 0 unpcb 144 2806 0 2793 31 30 1 10 0 8 0 syncache 304 57 0 57 11 11 0 1 0 8 0 tcpqe 32 272 0 272 5 5 0 1 0 8 0 tcpcb 808 2615 0 2608 72 70 2 11 0 8 0 arp 120 42 0 24 1 0 1 1 0 8 0 ipq 40 10 0 10 4 4 0 1 0 8 0 ipqe 40 168 0 168 4 4 0 1 0 8 0 inpcb 368 5666 0 5655 85 82 3 13 0 8 0 nd6 136 64 0 36 1 0 1 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 967 0 504 32 3 29 30 0 8 0 art_table 32 968 0 504 4 0 4 4 0 8 0 art_node 16 240 0 136 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 8 2 1 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 1371 0 1361 1 0 1 1 0 8 0 shmpl 112 130 0 46 5 2 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8090 0 6640 91 0 91 91 0 8 0 ffsino 272 8090 0 6640 97 0 97 97 0 8 0 nchpl 144 15576 0 13937 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 53852 0 53852 3 2 1 2 0 8 1 percpumem 16 54 0 11 1 0 1 1 0 8 0 kstatmem 264 44 0 22 2 0 2 2 0 8 0 scxspl 216 50161 0 50158 24 23 1 8 1 8 0 plimitpl 152 732 0 709 10 9 1 2 0 8 0 sigapl 424 6029 0 5976 7 0 7 7 0 8 0 futexpl 64 47953 0 47948 4 3 1 1 0 8 0 knotepl 120 358 0 0 11 1 10 11 0 8 0 kqueuepl 216 2103 0 2095 39 38 1 5 0 8 0 pipepl 320 714 0 686 13 10 3 8 0 8 0 fdescpl 496 6011 0 5977 7 2 5 6 0 8 0 filepl 152 36779 0 36542 68 58 10 19 0 8 0 lockfpl 104 8231 0 8229 2 1 1 2 0 8 0 lockfspl 48 2043 0 2041 1 0 1 1 0 8 0 sessionpl 144 34 0 18 1 0 1 1 0 8 0 pgrppl 48 61 0 45 1 0 1 1 0 8 0 ucredpl 104 3414 0 3396 1 0 1 1 0 8 0 zombiepl 144 5977 0 5976 1 0 1 1 0 8 0 processpl 1072 6029 0 5976 5 0 5 5 0 8 0 procpl 680 15983 0 15908 15 8 7 8 0 8 0 sosppl 168 84 0 84 6 5 1 1 0 8 1 sockpl 488 9001 0 8974 198 192 6 34 0 8 1 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 28 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 323 0 0 34 7 27 34 0 8 2 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 6806 0 0 415 0 415 415 0 8 0 bufpl 288 12271 0 5946 452 0 452 452 0 8 0 anonpl 24 694209 0 682318 164 83 81 94 0 186 0 amapchunkpl 152 185408 0 184506 83 43 40 50 0 158 3 amappl16 200 14558 0 14260 78 62 16 28 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 189 0 177 2 1 1 2 0 8 0 amappl13 176 16 0 16 3 3 0 1 0 8 0 amappl12 168 6807 0 6772 2 0 2 2 0 8 0 amappl11 160 74 0 62 1 0 1 1 0 8 0 amappl10 152 53 0 43 1 0 1 1 0 8 0 amappl9 144 321 0 321 6 6 0 1 0 8 0 amappl8 136 421 0 324 4 0 4 4 0 8 0 amappl7 128 96 0 81 2 1 1 2 0 8 0 amappl6 120 476 0 459 2 1 1 2 0 8 0 amappl5 112 386 0 376 1 0 1 1 0 8 0 amappl4 104 695 0 655 2 0 2 2 0 8 0 amappl3 96 36489 0 36396 4 1 3 4 0 8 0 amappl2 88 6531 0 6456 3 1 2 3 0 8 0 amappl1 80 29559 0 29041 22 9 13 22 0 8 0 amappl 88 57400 0 57149 9 2 7 7 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 72 132 0 46 2 0 2 2 0 8 0 uaddrrnd 24 6011 0 5977 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6011 0 5977 1 0 1 1 0 8 0 vmmpekpl 168 48626 0 48555 4 0 4 4 0 8 0 vmmpepl 168 362331 0 359983 188 81 107 121 0 357 0 vmsppl 464 6010 0 5977 7 2 5 6 0 8 0 rwobjpl 56 99454 0 92110 113 6 107 107 0 8 0 pdppl 4096 12030 0 11954 266 186 80 98 0 8 4 pvpl 32 1941535 0 1923259 420 254 166 363 0 265 9 pmappl 248 6010 0 5977 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1582 0 361 36 0 36 36 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000ffff8978,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff8000ffff8978,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1110 mtx_enter(ffff8000ffff8968) at mtx_enter+0x3e sys/kern/kern_lock.c:265 single_thread_set(ffff8000211f5d50,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000211f5d50,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000211f5d50,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000211f5d50,6,ffff80002e4179f8) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000211f5d50) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff80002e417b30) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff80002e417b30) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f5b96451a0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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(ffffffff82cc89c8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cc89c8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffffffff82cc9104,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 uvm_pmr_getpages(1,0,0,1,0,1,a6cf59b1466c795c,fffffd8069b4fd98) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(0,0,fffffd8069b4fd98,2) at uvm_pagealloc+0x1a8 sys/uvm/uvm_page.c:910 uvm_fault_lower(ffff80002e441da0,ffff80002e441dd8,ffff80002e441d20,0) at uvm_fault_lower+0x1ab uvm_fault(fffffd8069bae3c0,20000000,0,2) at uvm_fault+0x238 upageflttrap(ffff80002e441f20,200000c0) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002e441f20) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x78410f4a6d10, count: -12