uvm_fault(fffffd8069015d50,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80002a34c740,200000000340) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a34c740) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 end trace frame: 0xffff80002a34c960, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: mtx 0xffffffff8390c838: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e5df1) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8390c838) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8390c838) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007fff208) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fff208) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fff208) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd807cd35430,0,ffff80002a34c378,ffff80002a34c354,0,2,f1089c747b562d92,ffff80002a34c5d0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a34c598,ffff80002a34c5d0,ffff80002a34c400,ffff80002a34c408) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a34c598,ffff80002a34c5d0,ffff80002a34c510) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd8069015d50,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80002a34c740,200000000340) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a34c740) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80002a34c970) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a34c970) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8558c40ef50, count: -16 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a34c0c0 rbx 0xffff8000299eedcf rdx 0 rcx 0xffff8000ffff07d0 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xab00fd1b0959be9 r11 0x84470a868c8c5137 r12 0xffff8000299eebd0 r13 0 r14 0 r15 0x1 rip 0xffffffff823fd865 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a34c0b0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=498697 pid=76076 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=50, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff1c50,0xffff8000ffff0550 process=0xffff80003c022eb0 user=0xffff80002a347000, vmspace=0xfffffd8069015d50 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76076 162202 30769 32767 3 0x10 uobjlk syz-executor 76076 214345 30769 32767 3 0x4000090 fsleep syz-executor *76076 498697 30769 32767 7 0x4000010 syz-executor 76076 199845 30769 32767 3 0x4000090 fsleep syz-executor 62982 481038 80638 0 7 0x2 syz-executor 4766 208996 0 0 3 0x14200 bored sosplice 1125 146437 90253 32767 3 0x90 piperd syz-executor 16138 443328 97796 32767 3 0x90 piperd syz-executor 5983 208647 13190 32767 3 0x90 piperd syz-executor 26746 110820 23514 32767 3 0x90 wait syz-executor 15368 442366 27415 32767 3 0x90 wait syz-executor 30769 297574 74525 32767 3 0x90 nanoslp syz-executor 90253 252639 80638 0 3 0x82 wait syz-executor 97796 31553 80638 0 3 0x82 wait syz-executor 13190 188875 80638 0 3 0x82 wait syz-executor 23514 311039 80638 0 3 0x82 wait syz-executor 27415 76068 80638 0 3 0x82 wait syz-executor 74525 1036 80638 0 3 0x82 wait syz-executor 80638 98579 18684 0 3 0x82 nanoslp syz-executor 18684 195085 45926 0 3 0x10008a sigsusp ksh 45926 344621 22440 0 3 0x98 kqread sshd-session 22440 203641 3306 0 3 0x92 kqread sshd-session 94023 32940 1 0 3 0x100083 ttyin getty 3306 309057 1 0 3 0x88 kqread sshd 93661 325376 92277 73 3 0x1100090 kqread syslogd 92277 70556 1 0 3 0x100082 sbwait syslogd 11747 139730 1 0 3 0x100080 kqread resolvd 39780 378266 3395 77 3 0x100092 kqread dhcpleased 36589 33604 3395 77 3 0x100092 kqread dhcpleased 3395 473161 1 0 3 0x80 kqread dhcpleased 86599 304550 0 0 3 0x14200 bored smr 7881 257600 0 0 3 0x14200 pgzero zerothread 94248 53434 0 0 3 0x14200 aiodoned aiodoned 59311 232265 0 0 3 0x14200 syncer update 34362 177109 0 0 3 0x14200 cleaner cleaner 18515 386587 0 0 3 0x14200 reaper reaper 85932 409287 0 0 3 0x14200 pgdaemon pagedaemon 36386 268938 0 0 3 0x14200 bored viomb 56233 20968 0 0 3 0x40014200 acpi0 acpi0 35665 337666 0 0 3 0x40014200 idle1 15754 112118 0 0 3 0x14200 bored softnet3 78191 234512 0 0 3 0x14200 bored softnet2 5152 91260 0 0 3 0x14200 bored softnet1 51630 445477 0 0 3 0x14200 bored softnet0 74127 189672 0 0 3 0x14200 bored systqmp 27358 71499 0 0 3 0x14200 bored systq 91420 99405 0 0 3 0x14200 tmoslp softclockmp 43391 113278 0 0 3 0x40014200 tmoslp softclock 81331 488142 0 0 3 0x40014200 idle0 1 362777 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex /syzkaller/managers/setuid/kernel/sys/kern/vfs_subr.c:124 r = 0 (0xffffffff8383dec8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 vget+0x44 sys/kern/vfs_subr.c:668 #4 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #5 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #6 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #7 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #8 namei+0x7aa sys/kern/vfs_lookup.c:250 #9 sys_chdir+0x88 change_dir sys/kern/vfs_syscalls.c:839 [inline] #9 sys_chdir+0x88 sys/kern/vfs_syscalls.c:785 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8390c848) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #8 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #9 alltraps_kern_meltdown+0x7b #10 copyout+0x57 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 Process 76076 (syz-executor) thread 0xffff8000ffff07d0 (498697) exclusive rwlock uobjlk r = 0 (0xfffffd807cd56e38) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1297 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #8 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #9 alltraps_kern_meltdown+0x7b #10 copyout+0x57 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xffff80003c462eb0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sys_socketpair+0x2f5 sys/kern/uipc_syscalls.c:-1 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8390c848) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #8 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #9 alltraps_kern_meltdown+0x7b #10 copyout+0x57 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 Process 62982 (syz-executor) thread 0xffff8000ffff0a60 (481038) exclusive rrwlock inode r = 0 (0xfffffd806f0de0d0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 sys_chdir+0x88 change_dir sys/kern/vfs_syscalls.c:839 [inline] #7 sys_chdir+0x88 sys/kern/vfs_syscalls.c:785 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839c4b88) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10179 10949K 10965K 166960K 11262 0 pcb 17 12K 12K 166960K 17 0 rtable 190 5K 6K 166960K 348 0 pf 27 16K 16K 166960K 31 0 ifaddr 34 6K 7K 166960K 44 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 3 1K 1K 166960K 3 0 counters 60 35K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 30 0 iov 0 0K 12K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1580 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 62K 125K 166960K 321 0 sigio 0 0K 0K 166960K 1 0 proc 58 79K 127K 166960K 479 0 subproc 54 3K 4K 166960K 297 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 18 0 in_multi 77 5K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 368 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 207 158K 192K 166960K 3780 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 39 78K 112K 166960K 1320 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 16 0 NDP 9 0K 2K 166960K 27 0 temp 27 8674K 8739K 166960K 4475 0 kqueue 13 20K 26K 166960K 30 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 111 0 23 5 0 5 5 0 8 0 unpcb 144 134 0 117 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 138 0 133 7 0 7 7 0 8 6 arp 128 18 0 4 1 0 1 1 0 8 0 inpcb 384 247 0 238 8 0 8 8 0 8 6 nd6 144 24 0 6 1 0 1 1 0 8 0 kcovpl 48 33 0 27 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 88 29 0 29 29 0 8 4 art_table 32 454 0 88 4 0 4 4 0 8 0 art_node 16 110 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1678 0 143 96 0 96 96 0 8 0 ffsino 288 1678 0 143 110 0 110 110 0 8 0 nchpl 144 1964 0 260 64 0 64 64 0 8 0 uvmvnodes 80 1984 0 0 41 0 41 41 0 8 0 vnodes 216 1984 0 0 111 0 111 111 0 8 0 namei 1024 6140 0 6140 1 0 1 1 0 8 1 percpumem 16 47 0 2 1 0 1 1 0 8 0 kstatmem 264 22 0 4 2 0 2 2 0 8 0 scxspl 216 6553 0 6553 5 2 3 3 1 8 3 plimitpl 152 99 0 77 2 0 2 2 0 8 1 sigapl 424 543 0 494 8 0 8 8 0 8 0 futexpl 64 1155 0 1153 1 0 1 1 0 8 0 knotepl 120 308 0 0 10 0 10 10 0 8 0 kqueuepl 224 36 0 27 1 0 1 1 0 8 0 pipepl 336 183 0 156 3 0 3 3 0 8 0 fdescpl 520 524 0 494 4 0 4 4 0 8 0 filepl 160 2384 0 2196 13 0 13 13 0 8 3 lockfpl 104 19 0 16 1 0 1 1 0 8 0 lockfspl 48 8 0 5 1 0 1 1 0 8 0 sessionpl 144 47 0 33 1 0 1 1 0 8 0 pgrppl 48 81 0 60 1 0 1 1 0 8 0 ucredpl 104 219 0 202 1 0 1 1 0 8 0 zombiepl 144 496 0 494 1 0 1 1 0 8 0 processpl 1192 543 0 494 5 0 5 5 0 8 0 procpl 656 678 0 626 6 0 6 6 0 8 0 sockpl 728 423 0 394 9 0 9 9 0 8 5 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 130 0 0 17 0 17 17 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 180 0 0 12 0 12 12 0 8 0 bufpl 280 2485 0 117 170 0 170 170 0 8 0 anonpl 32 7573 0 0 62 0 62 62 0 246 0 amapchunkpl 152 10925 0 10527 24 0 24 24 0 158 4 amappl16 200 2330 0 2315 17 4 13 15 0 8 10 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1148 0 1119 2 0 2 2 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 252 0 252 1 1 0 1 0 8 0 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 138 0 128 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 128 0 122 1 0 1 1 0 8 0 amappl4 104 286 0 270 1 0 1 1 0 8 0 amappl3 96 1857 0 1764 4 0 4 4 0 8 0 amappl2 88 601 0 542 2 0 2 2 0 8 0 amappl1 80 8524 0 7986 15 1 14 14 0 8 0 amappl 88 3123 0 2981 5 0 5 5 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 524 0 494 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 524 0 494 1 0 1 1 0 8 0 vmmpekpl 168 6508 0 6455 3 0 3 3 0 8 0 vmmpepl 168 40109 0 38355 103 0 103 103 0 357 10 vmsppl 480 523 0 494 7 1 6 6 0 8 0 rwobjpl 72 15600 0 12849 55 0 55 55 0 8 0 pdppl 4096 1056 0 988 108 34 74 98 0 8 6 pvpl 32 14837 0 0 121 1 120 120 0 265 0 pmappl 256 523 0 494 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 400 0 37 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837d7ff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x701286d82f20, count: 10 ddb{0}> trace x86_ipi_db(ffffffff837d7ff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x701286d82f20, count: -5 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e5df1) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8390c838) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8390c838) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007fff208) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fff208) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fff208) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd807cd35430,0,ffff80002a34c378,ffff80002a34c354,0,2,f1089c747b562d92,ffff80002a34c5d0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a34c598,ffff80002a34c5d0,ffff80002a34c400,ffff80002a34c408) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a34c598,ffff80002a34c5d0,ffff80002a34c510) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd8069015d50,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80002a34c740,200000000340) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a34c740) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 end trace frame: 0xffff80002a34c960, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e5df1) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8390c838) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8390c838) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007fff208) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fff208) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fff208) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd807cd35430,0,ffff80002a34c378,ffff80002a34c354,0,2,f1089c747b562d92,ffff80002a34c5d0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002a34c598,ffff80002a34c5d0,ffff80002a34c400,ffff80002a34c408) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002a34c598,ffff80002a34c5d0,ffff80002a34c510) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd8069015d50,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80002a34c740,200000000340) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a34c740) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80002a34c970) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a34c970) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8558c40ef50, count: -16