witness: lock order reversal: 1st 0xffffffff82c65f30 &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(ffff8000212252b8,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000212252b8,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000212252b8,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000212252b8,6,ffff800029825558) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000212252b8) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff800029825690) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff800029825690) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c8d18a31b0, count: -9 ddb{0}> show registers rdi 0x3 rsi 0xffffffff82befdd0 __sancov_gen_cov_switch_values.134 rbp 0xffff800029825260 rbx 0x3 rdx 0 rcx 0xffff8000212252b8 rax 0xffffffff82bc3ff0 cpu_info_full_primary+0x1ff0 r8 0xffff8000298251d0 r9 0x8080808080808080 r10 0x505fc2b9e0f94cb5 r11 0x6626126697986784 r12 0xfffffd8003a0d9b0 r13 0 r14 0xfffffd80039f9690 r15 0xfffffd80031cabc0 rip 0xffffffff8165630c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800029825250 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=171897 stat=onproc flags process=500010 proc=4002000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800021225808,0xffffffff82d66768 process=0xffff8000ffff8868 user=0xffff800029820000, vmspace=0xfffffd806baba760 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71765 219727 40819 32767 4 0x582010 syz-executor.7 71765 354064 40819 32767 4 0x4580090 fsleep syz-executor.7 71765 135380 40819 32767 4 0x4580090 fsleep syz-executor.7 *71765 171897 40819 32767 7 0x4502010 syz-executor.7 17741 177564 86577 32767 2 0x10 syz-executor.5 17741 103873 86577 32767 2 0x4000010 syz-executor.5 17741 342774 86577 32767 2 0x4000010 syz-executor.5 62619 414037 92312 32767 2 0x10 syz-executor.1 8216 226840 31424 32767 2 0x10 syz-executor.0 8216 182428 31424 32767 3 0x4000090 fsleep syz-executor.0 8216 480159 31424 32767 3 0x4000090 fsleep syz-executor.0 8216 351074 31424 32767 7 0x4000010 syz-executor.0 33166 328842 26660 32767 2 0x10 syz-executor.2 95089 51416 68127 32767 3 0x90 nanoslp syz-executor.4 95089 392786 68127 32767 3 0x4000090 fsleep syz-executor.4 36793 394737 99673 32767 2 0x10 syz-executor.6 36793 284890 99673 32767 3 0x4000090 fsleep syz-executor.6 31424 378108 24432 32767 2 0x10 syz-executor.0 24432 69103 73504 0 3 0x82 wait syz-executor.0 99673 375417 84899 32767 3 0x90 nanoslp syz-executor.6 84899 464932 73504 0 3 0x82 wait syz-executor.6 68127 153141 66501 32767 3 0x90 nanoslp syz-executor.4 66501 448719 73504 0 3 0x82 wait syz-executor.4 92312 418413 14529 32767 2 0x10 syz-executor.1 14529 470811 73504 0 3 0x82 wait syz-executor.1 26660 131022 99996 32767 2 0x10 syz-executor.2 99996 31697 73504 0 3 0x82 wait syz-executor.2 86577 348130 32893 32767 3 0x90 nanoslp syz-executor.5 32893 320835 73504 0 3 0x82 wait syz-executor.5 40819 422825 50581 32767 3 0x90 nanoslp syz-executor.7 50581 465474 73504 0 3 0x82 wait syz-executor.7 53552 200343 43704 32767 2 0x10 syz-executor.3 43704 51259 73504 0 3 0x82 wait syz-executor.3 54405 324359 0 0 3 0x14200 bored sosplice 73504 101735 41607 0 3 0x2000082 wait syz-fuzzer 73504 313530 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 120612 41607 0 3 0x6000082 wait syz-fuzzer 73504 82457 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 182259 41607 0 3 0x6000082 wait syz-fuzzer 73504 379035 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 248312 41607 0 3 0x6000082 wait syz-fuzzer 73504 213319 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 70359 41607 0 3 0x6000082 wait syz-fuzzer 73504 97144 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 156933 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 11590 41607 0 3 0x6000082 thrsleep syz-fuzzer 73504 126830 41607 0 3 0x6000082 kqread syz-fuzzer 73504 440049 41607 0 3 0x6000082 wait syz-fuzzer 73504 15343 41607 0 3 0x6000082 wait syz-fuzzer 73504 38485 41607 0 3 0x6000082 wait syz-fuzzer 41607 164049 18816 0 3 0x10008a sigsusp ksh 18816 410889 61532 0 3 0x9a kqread sshd 93520 463319 1 0 3 0x100083 ttyin getty 61532 76470 1 0 3 0x88 kqread sshd 34470 437797 53899 73 3 0x1100090 kqread syslogd 53899 468736 1 0 3 0x100082 netio syslogd 65937 376257 1 0 3 0x100080 kqread resolvd 39318 150246 61625 77 3 0x100092 kqread dhcpleased 76880 175336 61625 77 3 0x100092 kqread dhcpleased 61625 225780 1 0 3 0x80 kqread dhcpleased 97746 68460 0 0 3 0x14200 bored smr 24315 392486 0 0 2 0x14200 zerothread 70849 384236 0 0 3 0x14200 aiodoned aiodoned 49136 298052 0 0 3 0x14200 syncer update 63706 384860 0 0 3 0x14200 cleaner cleaner 12769 301132 0 0 3 0x14200 reaper reaper 71643 94488 0 0 3 0x14200 pgdaemon pagedaemon 80081 116686 0 0 3 0x14200 bored viomb 42369 346396 0 0 3 0x40014200 acpi0 acpi0 36114 270811 0 0 3 0x40014200 idle1 89149 19124 0 0 3 0x14200 bored softnet3 78597 41643 0 0 3 0x14200 bored softnet2 17569 86268 0 0 3 0x14200 bored softnet1 83571 374245 0 0 3 0x14200 bored softnet0 82367 346243 0 0 3 0x14200 bored systqmp 58730 417863 0 0 3 0x14200 bored systq 72519 2167 0 0 3 0x40014200 bored softclock 1491 517800 0 0 3 0x40014200 idle0 1 227720 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 (0xffffffff82c65f30) #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 (0xffffffff82d03148) #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 71765 (syz-executor.7) thread 0xffff8000212252b8 (171897) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d03430) #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 (0xffffffff82c65f30) #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 8216 (syz-executor.0) thread 0xffff800021207d50 (351074) exclusive rwlock amaplk r = 0 (0xfffffd8079d13868) #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 (0xfffffd80678bba30) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 6414K 6420K 78643K 11389 0 pcb 13 14K 18K 78643K 17 0 rtable 248 7K 7K 78643K 2095 0 pf 29 8K 8K 78643K 83 0 ifaddr 44 15K 16K 78643K 158 0 ifgroup 50 2K 2K 78643K 158 0 sysctl 3 1K 4K 78643K 6 0 counters 60 35K 35K 78643K 114 0 ioctlops 0 0K 2K 78643K 150 0 iov 0 0K 18K 78643K 1350 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 10365 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 286 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 113K 78643K 18484 0 sigio 0 0K 0K 78643K 359 0 proc 56 78K 115K 78643K 2838 0 subproc 104 6K 6K 78643K 455 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 795 0 in_multi 99 7K 7K 78643K 513 0 ether_multi 1 0K 0K 78643K 26 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 307 1367K 1367K 78643K 307 0 exec 0 0K 1K 78643K 3524 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 483 92K 100K 78643K 182668 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 426 0 NDP 11 0K 2K 78643K 108 0 temp 74 5920K 6048K 78643K 48745 0 kqueue 12 18K 36K 78643K 1829 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 1174 0 1171 16 15 1 5 0 8 0 rtentry 112 446 0 329 4 0 4 4 0 8 0 unpcb 144 18076 0 18063 155 154 1 15 0 8 0 syncache 304 225 0 225 38 37 1 1 0 8 1 tcpqe 32 498 0 498 30 29 1 1 0 8 1 tcpcb 808 7831 0 7792 196 185 11 22 0 8 5 arp 120 75 0 56 1 0 1 1 0 8 0 ipq 40 165 0 165 9 9 0 1 0 8 0 ipqe 40 700 0 700 9 9 0 1 0 8 0 inpcb 368 12521 0 12411 216 205 11 20 0 8 0 nd6 136 140 0 110 5 3 2 2 0 8 0 kcovpl 48 35 0 27 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1800 0 1330 39 9 30 30 0 8 0 art_table 32 1801 0 1330 4 0 4 4 0 8 0 art_node 16 445 0 338 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 9 0 0 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 30901 0 29447 92 0 92 92 0 8 0 ffsino 272 30901 0 29447 98 0 98 98 0 8 0 nchpl 144 59161 0 57515 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 217003 0 217003 8 7 1 2 0 8 1 percpumem 16 70 0 27 1 0 1 1 0 8 0 kstatmem 264 76 0 54 2 0 2 2 0 8 0 scxspl 216 145525 0 145525 47 46 1 8 1 8 1 plimitpl 152 2242 0 2219 24 23 1 2 0 8 0 sigapl 424 18725 0 18670 7 0 7 7 0 8 0 futexpl 64 157450 0 157444 9 8 1 1 0 8 0 knotepl 120 1186 0 0 17 0 17 17 0 8 0 kqueuepl 216 5667 0 5658 83 80 3 8 0 8 2 pipepl 320 4396 0 4368 128 125 3 13 0 8 0 fdescpl 496 18707 0 18671 7 2 5 6 0 8 0 filepl 152 151121 0 150820 241 226 15 24 0 8 2 lockfpl 104 2888 0 2885 1 0 1 1 0 8 0 lockfspl 48 836 0 833 1 0 1 1 0 8 0 sessionpl 144 50 0 34 1 0 1 1 0 8 0 pgrppl 48 262 0 246 1 0 1 1 0 8 0 ucredpl 104 48723 0 48705 1 0 1 1 0 8 0 zombiepl 144 18671 0 18670 1 0 1 1 0 8 0 processpl 1072 18725 0 18670 4 0 4 4 0 8 0 procpl 680 51667 0 51587 42 35 7 8 0 8 0 srpgc 96 1 0 1 1 1 0 1 0 8 0 sosppl 168 259 0 258 17 16 1 1 0 8 0 sockpl 488 32368 0 32245 736 720 16 52 0 8 0 mcl64k 65536 54 0 0 5 2 3 3 0 8 0 mcl16k 16384 33 0 0 5 2 3 3 0 8 0 mcl12k 12288 35 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 42 0 0 4 1 3 3 0 8 0 mcl4k 4096 80 0 0 4 0 4 4 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 451 0 0 32 13 19 31 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1896 0 0 59 0 59 59 0 8 0 bufpl 288 29415 0 23089 453 0 453 453 0 8 0 anonpl 24 1795375 0 1783720 189 94 95 99 0 186 1 amapchunkpl 152 574972 0 574062 115 77 38 49 0 158 0 amappl16 200 37056 0 36774 233 211 22 29 0 8 5 amappl15 192 13 0 13 3 3 0 1 0 8 0 amappl14 184 233 0 219 2 1 1 2 0 8 0 amappl13 176 14 0 13 1 0 1 1 0 8 0 amappl12 168 19739 0 19696 2 0 2 2 0 8 0 amappl11 160 64 0 52 1 0 1 1 0 8 0 amappl10 152 71 0 59 1 0 1 1 0 8 0 amappl9 144 541 0 541 32 31 1 1 0 8 1 amappl8 136 1138 0 917 9 1 8 8 0 8 0 amappl7 128 238 0 224 2 0 2 2 0 8 0 amappl6 120 689 0 660 2 0 2 2 0 8 0 amappl5 112 994 0 985 1 0 1 1 0 8 0 amappl4 104 1348 0 1308 3 1 2 3 0 8 0 amappl3 96 113431 0 113333 6 3 3 4 0 8 0 amappl2 88 19828 0 19745 3 1 2 3 0 8 0 amappl1 80 74176 0 73642 22 10 12 22 0 8 0 amappl 88 181213 0 180945 7 0 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 18707 0 18671 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 18707 0 18671 1 0 1 1 0 8 0 vmmpekpl 168 144044 0 143980 4 0 4 4 0 8 0 vmmpepl 168 1088232 0 1085645 335 212 123 130 0 357 5 vmsppl 464 18706 0 18671 7 2 5 6 0 8 0 rwobjpl 56 269746 0 262222 141 31 110 111 0 8 0 pdppl 4096 37422 0 37342 654 572 82 90 0 8 2 pvpl 32 5364360 0 5345850 615 432 183 363 0 265 12 pmappl 248 18706 0 18671 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1914 0 1033 26 0 26 26 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(ffff8000212252b8,0,1) at single_thread_set+0x35a single_thread_wait sys/kern/kern_sig.c:2172 [inline] single_thread_set(ffff8000212252b8,0,1) at single_thread_set+0x35a sys/kern/kern_sig.c:2155 sigexit(ffff8000212252b8,6) at sigexit+0x90 sys/kern/kern_sig.c:1562 postsig(ffff8000212252b8,6,ffff800029825558) at postsig+0x4a9 sys/kern/kern_sig.c:1494 userret(ffff8000212252b8) at userret+0x16e sys/kern/kern_sig.c:1987 syscall(ffff800029825690) at syscall+0x4e7 mi_syscall_return sys/sys/syscall_mi.h:137 [inline] syscall(ffff800029825690) at syscall+0x4e7 sys/arch/amd64/amd64/trap.c:644 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c8d18a31b0, 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(ffffffff82c65d28) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c65d28) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffffffff82d02fb4,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 uvm_pmr_getpages(1,0,0,1,0,1,396d72afd8dd6834,fffffd80690dbc90) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(0,0,fffffd80690dbc90,2) at uvm_pagealloc+0x1a8 sys/uvm/uvm_page.c:910 uvm_fault_lower(ffff80002982b810,ffff80002982b848,ffff80002982b790,0) at uvm_fault_lower+0x1ab uvm_fault(fffffd80678bb938,460380f000,0,2) at uvm_fault+0x238 upageflttrap(ffff80002982b990,460380f968) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002982b990) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end trace frame: 0x0, count: -12