uvm_fault(0xfffffd8069ddecc8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at fifo_read+0x3b: movq 0(%rax),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND 488721 92601 32767 0x10 0 0 syz-executor.6 *323287 92601 32767 0x10 0x4000000 1K syz-executor.6 fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240 VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7 uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110 uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284 uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238 kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyinstr() at _copyinstr+0x58 namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156 vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107 doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126 syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 end trace frame: 0xffff800026b39630, 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: uvm_fault(0xfffffd8069ddecc8, 0x0, 0, 1) -> e ddb{1}> trace fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240 VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7 uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110 uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284 uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238 kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyinstr() at _copyinstr+0x58 namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156 vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107 doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126 syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3ccc0de0d0, count: -15 ddb{1}> show registers rdi 0xffff800026b38a30 rsi 0x1 rbp 0xffff800026b38a20 rbx 0x1 rdx 0 rcx 0xffff8000211f7d38 rax 0 r8 0 r9 0 r10 0x8dd41ae0255ff6c r11 0xc86c5b720924bdaa r12 0xfffffd8074c82a60 r13 0xffff800026b38ac0 r14 0xffff800026b38a30 r15 0xffff800026b38ac0 rip 0xffffffff8267728b fifo_read+0x3b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800026b389c0 ss 0x10 fifo_read+0x3b: movq 0(%rax),%rax ddb{1}> show proc PROC (syz-executor.6) tid=323287 pid=92601 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000211f62a8,0xffff8000211f7000 process=0xffff8000ffff90c8 user=0xffff800026b34000, vmspace=0xfffffd8069ddecc8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73505 56354 13478 32767 2 0x10 syz-executor.2 92601 488721 87503 32767 7 0x10 syz-executor.6 92601 161340 87503 32767 2 0x4000010 syz-executor.6 *92601 323287 87503 32767 7 0x4000010 syz-executor.6 31916 299615 5616 32767 3 0x90 nanoslp syz-executor.4 31916 179557 5616 32767 3 0x4000090 fsleep syz-executor.4 31916 385624 5616 32767 3 0x4000090 fsleep syz-executor.4 52580 259050 11586 32767 3 0x90 nanoslp syz-executor.7 52580 390467 11586 32767 3 0x4000090 kqread syz-executor.7 52580 4013 11586 32767 3 0x4000090 fsleep syz-executor.7 13478 313881 36712 32767 3 0x90 nanoslp syz-executor.2 36712 409934 61493 0 3 0x82 wait syz-executor.2 7615 292657 29303 32767 3 0x90 nanoslp syz-executor.0 29303 204496 61493 0 3 0x82 wait syz-executor.0 11586 198605 8087 32767 3 0x90 nanoslp syz-executor.7 8087 92596 61493 0 3 0x82 wait syz-executor.7 93435 399596 24724 32767 3 0x90 nanoslp syz-executor.5 24724 350101 61493 0 3 0x82 wait syz-executor.5 35200 171170 99842 32767 3 0x10 biowait syz-executor.1 99842 480734 61493 0 3 0x82 wait syz-executor.1 87503 159645 88398 32767 3 0x90 nanoslp syz-executor.6 88398 241470 61493 0 3 0x82 wait syz-executor.6 5616 197843 11512 32767 3 0x90 nanoslp syz-executor.4 11512 295710 61493 0 3 0x82 wait syz-executor.4 60302 81286 73743 32767 3 0x10 biowait syz-executor.3 73743 200015 61493 0 3 0x82 wait syz-executor.3 55217 199156 0 0 3 0x14200 bored sosplice 61493 231540 22938 0 3 0x2000082 kqread syz-fuzzer 61493 178398 22938 0 3 0x6000082 nanoslp syz-fuzzer 61493 90423 22938 0 3 0x6000082 thrsleep syz-fuzzer 61493 385903 22938 0 3 0x6000082 wait syz-fuzzer 61493 66097 22938 0 3 0x6000082 thrsleep syz-fuzzer 61493 275461 22938 0 3 0x6000082 thrsleep syz-fuzzer 61493 82735 22938 0 3 0x6000082 wait syz-fuzzer 61493 51022 22938 0 3 0x6000082 thrsleep syz-fuzzer 61493 143891 22938 0 3 0x6000082 wait syz-fuzzer 61493 9820 22938 0 3 0x6000082 thrsleep syz-fuzzer 61493 253073 22938 0 3 0x6000082 thrsleep syz-fuzzer 61493 151654 22938 0 3 0x6000082 wait syz-fuzzer 61493 193235 22938 0 3 0x6000082 wait syz-fuzzer 61493 86507 22938 0 3 0x6000082 wait syz-fuzzer 61493 459565 22938 0 3 0x6000082 wait syz-fuzzer 61493 180038 22938 0 3 0x6000082 wait syz-fuzzer 22938 294157 10229 0 3 0x10008a sigsusp ksh 10229 463055 75242 0 3 0x9a kqread sshd 47873 119974 1 0 3 0x100083 ttyin getty 75242 336507 1 0 3 0x88 kqread sshd 16111 200147 76078 73 3 0x1100090 kqread syslogd 76078 291345 1 0 3 0x100082 netio syslogd 67335 117791 1 0 3 0x100080 kqread resolvd 50261 193425 89825 77 3 0x100092 kqread dhcpleased 25322 17654 89825 77 3 0x100092 kqread dhcpleased 89825 374235 1 0 3 0x80 kqread dhcpleased 29518 289147 0 0 3 0x14200 bored smr 4743 3631 0 0 2 0x14200 zerothread 65258 458553 0 0 3 0x14200 aiodoned aiodoned 6347 184128 0 0 3 0x14200 syncer update 55107 38925 0 0 3 0x14200 cleaner cleaner 5895 64678 0 0 3 0x14200 reaper reaper 93102 338758 0 0 3 0x14200 pgdaemon pagedaemon 51940 248670 0 0 3 0x14200 bored viomb 55461 26165 0 0 3 0x40014200 acpi0 acpi0 7576 361538 0 0 3 0x40014200 idle1 74648 261631 0 0 3 0x14200 bored softnet3 44443 268980 0 0 3 0x14200 bored softnet2 46541 256521 0 0 3 0x14200 bored softnet1 77158 265520 0 0 3 0x14200 bored softnet0 78930 418008 0 0 3 0x14200 bored systqmp 93129 489105 0 0 3 0x14200 bored systq 67012 497834 0 0 3 0x14200 tmoslp softclockmp 33531 325011 0 0 3 0x40014200 tmoslp softclock 90414 385936 0 0 3 0x40014200 idle0 1 104880 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 92601 (syz-executor.6) thread 0xffff8000211f7d38 (323287) exclusive rrwlock inode r = 0 (0xfffffd8062f00f88) #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 uvn_io+0x317 sys/uvm/uvm_vnode.c:1263 #6 uvn_get+0x1df sys/uvm/uvm_vnode.c:1110 #7 uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284 #8 uvm_fault+0x238 #9 kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 #10 kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 #11 alltraps_kern_meltdown+0x7b #12 _copyinstr+0x58 #13 namei+0x133 sys/kern/vfs_lookup.c:156 #14 vn_open+0x17b sys/kern/vfs_vnops.c:107 #15 doopenat+0x26e sys/kern/vfs_syscalls.c:1126 #16 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #16 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #17 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82d1aa78) #0 witness_lock+0x447 #1 syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] #1 syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 #2 Xsyscall+0x128 Process 35200 (syz-executor.1) thread 0xffff80002121a2c8 (171170) exclusive rrwlock inode r = 0 (0xfffffd805b8393d8) #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 (0xfffffd80639bc3d0) #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 60302 (syz-executor.3) thread 0xffff8000211e52b0 (81286) exclusive rrwlock inode r = 0 (0xfffffd807e8ca1b8) #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 (0xfffffd8062f00708) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 6413K 6421K 78643K 11812 0 pcb 13 20K 24K 78643K 21 0 rtable 236 6K 7K 78643K 7712 0 pf 29 8K 8K 78643K 371 0 ifaddr 44 17K 18K 78643K 738 0 ifgroup 50 2K 2K 78643K 734 0 sysctl 4 1K 3K 78643K 21 0 counters 62 36K 36K 78643K 404 0 ioctlops 0 0K 2K 78643K 458 0 iov 0 0K 32K 78643K 6559 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 12660 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 898 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 25458 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 125K 78643K 56769 0 sigio 0 0K 0K 78643K 926 0 proc 56 78K 103K 78643K 8135 0 subproc 104 6K 6K 78643K 2327 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 3751 0 in_multi 99 7K 7K 78643K 2412 0 ether_multi 1 0K 0K 78643K 53 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 235 1049K 1049K 78643K 235 0 exec 0 0K 1K 78643K 10083 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 487 89K 112K 78643K 555843 0 UVM aobj 131 4K 5K 78643K 145 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1135 0 NDP 11 0K 2K 78643K 540 0 temp 74 5924K 6052K 78643K 147388 0 kqueue 12 18K 29K 78643K 3580 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 3132 0 3129 40 39 1 3 0 8 0 rtentry 112 2106 0 1995 4 0 4 4 0 8 0 unpcb 144 39627 0 39614 364 361 3 11 0 8 2 syncache 312 666 0 666 100 99 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 808 0 808 92 91 1 1 0 8 1 tcpcb 808 22237 0 22207 474 466 8 20 0 8 3 arp 120 373 0 354 1 0 1 1 0 8 0 ipq 40 114 0 112 32 31 1 1 0 8 0 ipqe 40 671 0 667 32 31 1 1 0 8 0 inpcb 368 41942 0 41903 520 510 10 22 0 8 4 nd6 136 638 0 614 8 7 1 2 0 8 0 kcovpl 48 179 0 171 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 8443 0 7980 43 13 30 32 0 8 0 art_table 32 8444 0 7980 5 1 4 5 0 8 0 art_node 16 2105 0 2004 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 2 1 1 1 0 8 0 semapl 112 25456 0 25446 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 84399 0 82882 95 0 95 95 0 8 0 ffsino 272 84399 0 82882 102 0 102 102 0 8 0 nchpl 144 168343 0 166700 63 0 63 63 0 8 0 uvmvnodes 80 7225 0 0 148 0 148 148 0 8 0 vnodes 216 7225 0 0 402 0 402 402 0 8 0 namei 1024 574448 0 574447 20 19 1 2 0 8 0 percpumem 16 215 0 171 1 0 1 1 0 8 0 kstatmem 264 364 0 342 2 0 2 2 0 8 0 scxspl 216 496727 0 496725 201 199 2 8 1 8 1 plimitpl 152 9235 0 9212 68 66 2 2 0 8 1 sigapl 424 56721 0 56667 7 0 7 7 0 8 0 futexpl 64 481870 0 481867 15 14 1 1 0 8 0 knotepl 120 2605 0 0 22 4 18 18 0 8 0 kqueuepl 216 13120 0 13111 227 224 3 8 0 8 2 pipepl 320 13900 0 13872 284 276 8 11 0 8 5 fdescpl 496 56702 0 56669 9 4 5 6 0 8 0 filepl 152 404724 0 404485 538 523 15 21 0 8 5 lockfpl 104 7059 0 7056 4 3 1 2 0 8 0 lockfspl 48 2019 0 2016 1 0 1 1 0 8 0 sessionpl 144 194 0 178 1 0 1 1 0 8 0 pgrppl 48 1032 0 1016 1 0 1 1 0 8 0 ucredpl 104 53568 0 53550 1 0 1 1 0 8 0 zombiepl 144 56669 0 56667 2 1 1 1 0 8 0 processpl 1072 56721 0 56667 5 1 4 5 0 8 0 procpl 680 157541 0 157466 81 73 8 8 0 8 0 sosppl 168 692 0 689 52 51 1 1 0 8 0 sockpl 488 87375 0 87322 1391 1376 15 41 0 8 6 mcl64k 65536 81 0 0 5 2 3 3 0 8 0 mcl16k 16384 53 0 0 5 2 3 3 0 8 0 mcl12k 12288 42 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 89 0 0 4 1 3 4 0 8 0 mcl4k 4096 121 0 0 5 2 3 4 0 8 0 mcl2k2 2112 33 0 0 2 0 2 2 0 8 0 mcl2k 2048 935 0 0 44 24 20 37 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 3579 0 0 131 2 129 131 0 8 0 bufpl 288 100254 0 93028 517 0 517 517 0 8 0 anonpl 24 5185414 0 5173628 296 184 112 133 0 186 9 amapchunkpl 152 1774400 0 1773585 469 430 39 57 0 158 1 amappl16 200 93954 0 93644 363 341 22 42 0 8 0 amappl15 192 10 0 10 2 2 0 1 0 8 0 amappl14 184 707 0 691 2 1 1 2 0 8 0 amappl13 176 36 0 36 11 11 0 1 0 8 0 amappl12 168 59933 0 59893 4 2 2 3 0 8 0 amappl11 160 74 0 63 1 0 1 1 0 8 0 amappl10 152 208 0 196 1 0 1 1 0 8 0 amappl9 144 772 0 771 1 0 1 1 0 8 0 amappl8 136 2660 0 2365 12 1 11 11 0 8 0 amappl7 128 911 0 885 2 0 2 2 0 8 0 amappl6 120 3574 0 3541 2 0 2 2 0 8 0 amappl5 112 1396 0 1387 1 0 1 1 0 8 0 amappl4 104 2938 0 2895 4 2 2 2 0 8 0 amappl3 96 340405 0 340316 48 44 4 4 0 8 0 amappl2 88 60517 0 60431 23 20 3 3 0 8 0 amappl1 80 216793 0 216266 22 9 13 22 0 8 0 amappl 88 551719 0 551481 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 72 144 0 14 3 0 3 3 0 8 0 uaddrrnd 24 56702 0 56669 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 56702 0 56669 1 0 1 1 0 8 0 vmmpekpl 168 429386 0 429321 4 0 4 4 0 8 0 vmmpepl 168 3358350 0 3355787 490 352 138 174 0 357 0 vmsppl 464 56701 0 56669 6 1 5 6 0 8 0 rwobjpl 56 779837 0 770891 168 40 128 128 0 8 0 pdppl 4096 113412 0 113338 2332 2250 82 96 0 8 8 pvpl 32 16087750 0 16069668 911 675 236 343 0 265 54 pmappl 248 56701 0 56669 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 4485 0 3465 30 0 30 30 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bf9ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff80002126b890,ffff80000007bd80) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7ded02e83720, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82bf9ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff80002126b890,ffff80000007bd80) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7ded02e83720, count: -6 ddb{0}> machine ddbcpu 1 Stopped at fifo_read+0x3b: movq 0(%rax),%rax fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240 VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7 uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110 uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284 uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238 kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyinstr() at _copyinstr+0x58 namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156 vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107 doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126 syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 end trace frame: 0xffff800026b39630, count: 0 ddb{1}> trace fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240 VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7 uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110 uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284 uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238 kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyinstr() at _copyinstr+0x58 namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156 vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107 doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126 syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3ccc0de0d0, count: -15