kernel:l : pagege a rap , c o eaultStopped at dovutimens+0x368: movl 0x98(%rax),%r12d
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syzbot
Jul 21, 2026, 8:17:32 AM (7 days ago) Jul 21
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 20200149c668 Use peer_dump_done() in the EXPORT_NONE and E..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1371fc32580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=89e7c8667e88d1557751
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/20311956b548/disk-20200149.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/0727349dd37e/bsd-20200149.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/969217e13842/kernel-20200149.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+89e7c8...@syzkaller.appspotmail.com
uvm_ffualutl(t(0xfffffff400000b1cb988, 0xx9988, 0, 1 ) - >0, 1 > kekernel:l : pagege a rap , c o eaultStopped at dovutimens+0x368: movl 0x98(%rax),%r12d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 80212 72815 0 0 0x4000000 1 syz-executor
409844 72815 0 0 0x4000000 0K syz-executor
dovutimens(ffff800045fe74e8,fffff400647c5a50,ffff80002a24d170) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe74e8,ffff80002a24d2c0,ffff80002a24d210) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a24d2c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a24d2c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9d39f8350, count: 11
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
cpu0: uvm_fault(0xfffff4000b1cb988, 0x98, 0, 1) -> e
*cpu1: uvm_fault(0xfffff4000b1cb988, 0x98, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
dovutimens(ffff800045fe74e8,fffff400647c5a50,ffff80002a24d170) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe74e8,ffff80002a24d2c0,ffff80002a24d210) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a24d2c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a24d2c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9d39f8350, count: -4
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a24d160
rbx 0
rdx 0
rcx 0xffff800045fe74e8
rax 0
r8 0x7f7fffffc000
r9 0
r10 0x7d1dd3b42c15dbd7
r11 0x97779f612dc9ff53
r12 0xffff80002a24d170
r13 0
r14 0xfffff400647c5a50
r15 0xffff800045fe74e8
rip 0xffffffff81988878 dovutimens+0x368
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a24d060
ss 0x10
dovutimens+0x368: movl 0x98(%rax),%r12d
ddb{1}> show proc
PROC (syz-executor) tid=80212 pid=72815 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800045fe62c0,0xffff800045fe6038
process=0xffff800045fe84f0 user=0xffff80002a248000, vmspace=0xfffff4000b1cb988
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
72815 155165 97496 0 2 0 0 syz-executor
*72815 80212 97496 0 7 0 0x4000000 syz-executor
72815 409844 97496 0 7 0 0x4000000 syz-executor
94166 406682 86999 0 2 0 0 syz-executor
94166 207194 86999 0 2 0 0x4000000 syz-executor
13712 488555 96243 0 2 0 0 syz-executor
13712 240494 96243 0 3 0 0x4000080 fsleep syz-executor
13712 294088 96243 0 2 0 0x4000000 syz-executor
90116 486299 69555 0 4 0x2000 0x80000 syz-executor
90116 336209 69555 0 3 0x2000 0x4000000 suspend syz-executor
90116 275427 69555 0 2 0x2000 0x4080000 syz-executor
90116 398944 69555 0 4 0x2000 0x4080000 syz-executor
3604 94514 46943 0 2 0 0 syz-executor
3604 405651 46943 0 3 0 0x4000080 pipewr syz-executor
77429 431710 48989 0 2 0 0 syz-executor
77429 4613 48989 0 2 0 0x4000000 syz-executor
77429 276077 48989 0 3 0 0x4000080 fsleep syz-executor
2545 491719 40184 0 2 0x2 0 syz-executor
48838 136721 0 0 3 0x14000 0x280 nfsidl nfsio
43057 430274 0 0 3 0x14000 0x280 nfsidl nfsio
99325 484763 0 0 3 0x14000 0x280 nfsidl nfsio
70087 188508 0 0 3 0x14000 0x280 nfsidl nfsio
46587 472245 0 0 3 0x14000 0x280 nfsidl nfsio
5824 436717 0 0 3 0x14000 0x280 nfsidl nfsio
17168 311176 0 0 3 0x14000 0x280 nfsidl nfsio
46787 118336 0 0 3 0x14000 0x280 nfsidl nfsio
63526 190342 0 0 3 0x14000 0x280 nfsidl nfsio
22748 362853 0 0 3 0x14000 0x280 nfsidl nfsio
35274 11761 0 0 3 0x14000 0x280 nfsidl nfsio
84557 334813 0 0 3 0x14000 0x280 nfsidl nfsio
77050 180924 0 0 3 0x14000 0x280 nfsidl nfsio
97945 185208 0 0 3 0x14000 0x280 nfsidl nfsio
43980 395104 0 0 3 0x14000 0x280 nfsidl nfsio
42469 258013 0 0 3 0x14000 0x280 nfsidl nfsio
20322 238438 0 0 3 0x14000 0x280 nfsidl nfsio
50807 371080 0 0 3 0x14000 0x280 nfsidl nfsio
40519 372259 0 0 3 0x14000 0x280 nfsidl nfsio
29969 333765 0 0 3 0x14000 0x280 nfsidl nfsio
69555 163553 40184 0 2 0x2 0 syz-executor
96243 349449 40184 0 2 0x2 0xc80 syz-executor
46943 438499 40184 0 2 0x2 0xc80 syz-executor
97496 506471 40184 0 3 0x2 0x80 nanoslp syz-executor
63568 510162 40184 0 3 0x2 0x80 piperd syz-executor
86999 1089 40184 0 3 0x2 0x80 nanoslp syz-executor
48989 233772 40184 0 2 0x2 0xc80 syz-executor
40184 458663 1 0 2 0x2 0 syz-executor
31622 523803 0 0 3 0x14000 0x200 bored smr
47377 17368 0 0 2 0x14000 0x200 zerothread
64672 333665 0 0 3 0x14000 0x200 aiodoned aiodoned
74076 3816 0 0 3 0x14000 0x200 syncer update
80666 207147 0 0 3 0x14000 0x200 cleaner cleaner
40784 477033 0 0 3 0x14000 0x200 reaper reaper
67210 278558 0 0 3 0x14000 0x200 pgdaemon pagedaemon
32363 17341 0 0 3 0x14000 0x200 bored viomb
97052 168334 0 0 3 0x14000 0x40000200 acpi0 acpi0
15109 250802 0 0 3 0x14000 0x40000200 idle1
69875 405468 0 0 3 0x14000 0x200 bored softnet1
64017 260938 0 0 3 0x14000 0x200 bored softnet0
52188 346054 0 0 3 0x14000 0x200 bored systqmp
95016 439395 0 0 3 0x14000 0x200 bored systq
98691 80827 0 0 3 0x14000 0x200 tmoslp softclockmp
62764 478320 0 0 3 0x14000 0x40000200 tmoslp softclock
92447 359963 0 0 3 0x14000 0x40000200 idle0
1 146487 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 72815 (syz-executor) thread 0xffff800045fe74e8 (80212)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83aafe80)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2 Xsyscall+0x128
Process 94166 (syz-executor) thread 0xffff800045fe6028 (207194)
exclusive rrwlock inode r = 0 (0xfffff4006b0bd570)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1759
#8 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293
#9 VOP_SYMLINK+0x119 sys/kern/vfs_vops.c:432
#10 dosymlinkat+0x1e0 sys/kern/vfs_syscalls.c:1761
#11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff4006f0615b8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 dosymlinkat+0xef sys/kern/vfs_syscalls.c:1747
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11065 12272K 12338K 166960K 12397 0
pcb 18 12K 12K 166960K 61 0
rtable 227 7K 7K 166960K 368 0
pf 34 17K 24K 166960K 89 0
ifaddr 40 7K 7K 166960K 49 0
ifgroup 48 2K 2K 166960K 67 0
sysctl 1 1K 9K 166960K 6 0
counters 68 36K 37K 166960K 80 0
ioctlops 0 0K 4K 166960K 1522 0
iov 0 0K 4K 166960K 12 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1362 86K 86K 166960K 1653 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 43 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 15 57K 110K 166960K 342 0
sigio 0 0K 0K 166960K 2 0
proc 12 17K 180K 166960K 593 0
subproc 70 4K 5K 166960K 133 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 35 0
in_multi 88 6K 7K 166960K 105 0
ether_multi 1 0K 0K 166960K 3 0
mrt 1 0K 0K 166960K 12 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 403 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 124 78K 174K 166960K 4773 0
UVM aobj 10 2K 2K 166960K 10 0
pinsyscall 16 32K 99K 166960K 1495 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 4 0
NDP 11 0K 1K 166960K 31 0
temp 42 9119K 9150K 166960K 8100 0
kqueue 1 2K 24K 166960K 63 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 28 0 0 1 0 1 1 0 8 0
rtpcb 120 37 0 37 1 0 1 1 0 8 1
rtentry 176 115 0 12 6 0 6 6 0 8 0
unpcb 144 196 0 196 3 0 3 3 0 8 3
syncache 336 11 0 11 1 0 1 1 0 8 1
tcpcb 736 139 0 138 7 0 7 7 0 8 6
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 396 0 306 8 0 8 8 0 8 0
nd6 152 27 0 3 1 0 1 1 0 8 0
pkpcb 40 35 0 35 1 0 1 1 0 8 1
kcovpl 48 14 0 7 1 0 1 1 0 8 0
ppxss 1192 3 0 3 1 0 1 1 0 8 1
pffrag 232 2 0 1 1 0 1 1 0 482 0
pffrnode 88 2 0 1 1 0 1 1 0 8 0
pffrent 40 4 0 3 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
pfrktable 1344 1 0 1 1 0 1 1 0 8 1
pfanchor 1288 5 0 2 1 0 1 1 0 8 0
pfqueue 320 1 0 1 1 0 1 1 0 8 1
pfstitem 24 40 0 0 1 0 1 1 0 8 0
pfstkey 128 42 0 2 2 0 2 2 0 8 0
pfstate 448 40 0 1 5 0 5 5 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 478 0 44 29 0 29 29 0 8 1
art_table 40 479 0 44 5 0 5 5 0 8 0
art_node 32 115 0 21 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0
semapl 72 41 0 37 1 0 1 1 0 8 0
shmpl 112 7 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1884 0 408 93 0 93 93 0 8 0
ffsino 296 1884 0 408 115 0 115 115 0 8 0
nchpl 144 2323 0 615 64 0 64 64 0 8 0
rtmask 32 1 0 1 1 0 1 1 0 8 1
vnodes 216 2217 0 0 124 0 124 124 0 8 0
namei 1024 7901 0 7899 3 0 3 3 0 8 2
percpumem 16 56 0 6 1 0 1 1 0 8 0
kstatmem 264 33 0 8 3 0 3 3 0 8 1
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 9893 0 9893 11 3 8 8 1 8 8
plimitpl 152 60 0 51 1 0 1 1 0 8 0
sigapl 424 659 0 606 7 0 7 7 0 8 0
knotepl 120 647 0 0 20 0 20 20 0 8 0
kqueuepl 224 74 0 73 1 0 1 1 0 8 0
pipepl 344 157 0 129 3 0 3 3 0 8 0
fdescpl 528 623 0 606 3 0 3 3 0 8 1
filepl 160 3160 0 2919 14 0 14 14 0 8 3
lockfpl 104 233 0 231 1 0 1 1 0 8 0
lockfspl 48 82 0 80 1 0 1 1 0 8 0
sessionpl 144 36 0 34 1 0 1 1 0 8 0
pgrppl 48 51 0 41 1 0 1 1 0 8 0
ucredpl 104 297 0 294 1 0 1 1 0 8 0
zombiepl 144 606 0 606 1 0 1 1 0 8 1
processpl 1232 659 0 606 5 0 5 5 0 8 0
procpl 664 968 0 904 6 0 6 6 0 8 0
sockpl 752 672 0 582 15 5 10 14 0 8 1
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 4 0 0 1 0 1 1 0 8 0
mcl9k128 9344 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 116 0 0 15 0 15 15 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 17 0 0 3 0 3 3 0 8 0
mextrefs 64 17 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 157 0 0 10 0 10 10 0 8 0
bufpl 272 4280 0 105 279 0 279 279 0 8 0
anonpl 32 9431 0 0 76 0 76 76 0 247 0
amapchunkpl 152 14900 0 14559 25 1 24 25 0 158 10
amappl16 200 2356 0 2337 21 11 10 16 0 8 8
amappl15 192 7 0 7 1 1 0 1 0 8 0
amappl14 184 427 0 427 1 0 1 1 0 8 1
amappl13 176 133 0 133 1 0 1 1 0 8 1
amappl12 168 884 0 868 2 0 2 2 0 8 0
amappl11 160 32 0 32 1 1 0 1 0 8 0
amappl10 152 96 0 96 1 0 1 1 0 8 1
amappl9 144 277 0 277 1 1 0 1 0 8 0
amappl8 136 98 0 97 1 0 1 1 0 8 0
amappl7 128 147 0 145 1 0 1 1 0 8 0
amappl6 120 173 0 172 1 0 1 1 0 8 0
amappl5 112 98 0 98 1 0 1 1 0 8 1
amappl4 104 299 0 297 1 0 1 1 0 8 0
amappl3 96 2732 0 2657 4 0 4 4 0 8 1
amappl2 88 544 0 536 2 0 2 2 0 8 0
amappl1 80 11245 0 11162 14 0 14 14 0 8 6
amappl 88 3967 0 3853 4 0 4 4 0 92 1
uvmvnodes 80 102 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma2048 2048 2 0 2 1 0 1 1 0 8 1
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 9 0 0 1 0 1 1 0 8 0
uaddrrnd 24 623 0 606 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 623 0 606 1 0 1 1 0 8 0
vmmpekpl 168 7205 0 7164 3 0 3 3 0 8 1
vmmpepl 168 49093 0 48366 97 0 97 97 0 357 63
vmsppl 488 622 0 606 5 1 4 5 0 8 1
rwobjpl 80 17153 0 16770 27 0 27 27 0 8 6
pdppl 4096 1253 0 1212 93 50 43 81 0 8 2
pvpl 32 16928 0 0 137 0 137 137 0 265 0
pmappl 256 622 0 606 3 0 3 3 0 8 1
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 554 0 53 15 0 15 15 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff839ceff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670
comcnputc(800,74) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,74) at comcnputc+0x250 sys/dev/ic/com.c:1274
cnputc(74) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(74) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834add1b) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff80002a401dd0) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff800045fe6d20,fffff400647c5a50,ffff80002a401f90) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe6d20,ffff80002a4020e0,ffff80002a402030) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
end trace frame: 0xffff80002a4020d0, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff839ceff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670
comcnputc(800,74) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,74) at comcnputc+0x250 sys/dev/ic/com.c:1274
cnputc(74) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(74) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834add1b) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff80002a401dd0) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff800045fe6d20,fffff400647c5a50,ffff80002a401f90) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe6d20,ffff80002a4020e0,ffff80002a402030) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a4020e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a4020e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xaa2c7ce1b0, count: -16
ddb{0}> machine ddbcpu 1
Stopped at dovutimens+0x368: movl 0x98(%rax),%r12d
dovutimens(ffff800045fe74e8,fffff400647c5a50,ffff80002a24d170) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe74e8,ffff80002a24d2c0,ffff80002a24d210) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a24d2c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a24d2c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9d39f8350, count: 11
ddb{1}>
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 20200149c668 Use peer_dump_done() in the EXPORT_NONE and E..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1371fc32580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=89e7c8667e88d1557751
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/20311956b548/disk-20200149.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/0727349dd37e/bsd-20200149.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/969217e13842/kernel-20200149.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+89e7c8...@syzkaller.appspotmail.com
uvm_ffualutl(t(0xfffffff400000b1cb988, 0xx9988, 0, 1 ) - >0, 1 > kekernel:l : pagege a rap , c o eaultStopped at dovutimens+0x368: movl 0x98(%rax),%r12d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 80212 72815 0 0 0x4000000 1 syz-executor
409844 72815 0 0 0x4000000 0K syz-executor
dovutimens(ffff800045fe74e8,fffff400647c5a50,ffff80002a24d170) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe74e8,ffff80002a24d2c0,ffff80002a24d210) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a24d2c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a24d2c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9d39f8350, count: 11
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
cpu0: uvm_fault(0xfffff4000b1cb988, 0x98, 0, 1) -> e
*cpu1: uvm_fault(0xfffff4000b1cb988, 0x98, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
dovutimens(ffff800045fe74e8,fffff400647c5a50,ffff80002a24d170) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe74e8,ffff80002a24d2c0,ffff80002a24d210) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a24d2c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a24d2c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9d39f8350, count: -4
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a24d160
rbx 0
rdx 0
rcx 0xffff800045fe74e8
rax 0
r8 0x7f7fffffc000
r9 0
r10 0x7d1dd3b42c15dbd7
r11 0x97779f612dc9ff53
r12 0xffff80002a24d170
r13 0
r14 0xfffff400647c5a50
r15 0xffff800045fe74e8
rip 0xffffffff81988878 dovutimens+0x368
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a24d060
ss 0x10
dovutimens+0x368: movl 0x98(%rax),%r12d
ddb{1}> show proc
PROC (syz-executor) tid=80212 pid=72815 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800045fe62c0,0xffff800045fe6038
process=0xffff800045fe84f0 user=0xffff80002a248000, vmspace=0xfffff4000b1cb988
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
72815 155165 97496 0 2 0 0 syz-executor
*72815 80212 97496 0 7 0 0x4000000 syz-executor
72815 409844 97496 0 7 0 0x4000000 syz-executor
94166 406682 86999 0 2 0 0 syz-executor
94166 207194 86999 0 2 0 0x4000000 syz-executor
13712 488555 96243 0 2 0 0 syz-executor
13712 240494 96243 0 3 0 0x4000080 fsleep syz-executor
13712 294088 96243 0 2 0 0x4000000 syz-executor
90116 486299 69555 0 4 0x2000 0x80000 syz-executor
90116 336209 69555 0 3 0x2000 0x4000000 suspend syz-executor
90116 275427 69555 0 2 0x2000 0x4080000 syz-executor
90116 398944 69555 0 4 0x2000 0x4080000 syz-executor
3604 94514 46943 0 2 0 0 syz-executor
3604 405651 46943 0 3 0 0x4000080 pipewr syz-executor
77429 431710 48989 0 2 0 0 syz-executor
77429 4613 48989 0 2 0 0x4000000 syz-executor
77429 276077 48989 0 3 0 0x4000080 fsleep syz-executor
2545 491719 40184 0 2 0x2 0 syz-executor
48838 136721 0 0 3 0x14000 0x280 nfsidl nfsio
43057 430274 0 0 3 0x14000 0x280 nfsidl nfsio
99325 484763 0 0 3 0x14000 0x280 nfsidl nfsio
70087 188508 0 0 3 0x14000 0x280 nfsidl nfsio
46587 472245 0 0 3 0x14000 0x280 nfsidl nfsio
5824 436717 0 0 3 0x14000 0x280 nfsidl nfsio
17168 311176 0 0 3 0x14000 0x280 nfsidl nfsio
46787 118336 0 0 3 0x14000 0x280 nfsidl nfsio
63526 190342 0 0 3 0x14000 0x280 nfsidl nfsio
22748 362853 0 0 3 0x14000 0x280 nfsidl nfsio
35274 11761 0 0 3 0x14000 0x280 nfsidl nfsio
84557 334813 0 0 3 0x14000 0x280 nfsidl nfsio
77050 180924 0 0 3 0x14000 0x280 nfsidl nfsio
97945 185208 0 0 3 0x14000 0x280 nfsidl nfsio
43980 395104 0 0 3 0x14000 0x280 nfsidl nfsio
42469 258013 0 0 3 0x14000 0x280 nfsidl nfsio
20322 238438 0 0 3 0x14000 0x280 nfsidl nfsio
50807 371080 0 0 3 0x14000 0x280 nfsidl nfsio
40519 372259 0 0 3 0x14000 0x280 nfsidl nfsio
29969 333765 0 0 3 0x14000 0x280 nfsidl nfsio
69555 163553 40184 0 2 0x2 0 syz-executor
96243 349449 40184 0 2 0x2 0xc80 syz-executor
46943 438499 40184 0 2 0x2 0xc80 syz-executor
97496 506471 40184 0 3 0x2 0x80 nanoslp syz-executor
63568 510162 40184 0 3 0x2 0x80 piperd syz-executor
86999 1089 40184 0 3 0x2 0x80 nanoslp syz-executor
48989 233772 40184 0 2 0x2 0xc80 syz-executor
40184 458663 1 0 2 0x2 0 syz-executor
31622 523803 0 0 3 0x14000 0x200 bored smr
47377 17368 0 0 2 0x14000 0x200 zerothread
64672 333665 0 0 3 0x14000 0x200 aiodoned aiodoned
74076 3816 0 0 3 0x14000 0x200 syncer update
80666 207147 0 0 3 0x14000 0x200 cleaner cleaner
40784 477033 0 0 3 0x14000 0x200 reaper reaper
67210 278558 0 0 3 0x14000 0x200 pgdaemon pagedaemon
32363 17341 0 0 3 0x14000 0x200 bored viomb
97052 168334 0 0 3 0x14000 0x40000200 acpi0 acpi0
15109 250802 0 0 3 0x14000 0x40000200 idle1
69875 405468 0 0 3 0x14000 0x200 bored softnet1
64017 260938 0 0 3 0x14000 0x200 bored softnet0
52188 346054 0 0 3 0x14000 0x200 bored systqmp
95016 439395 0 0 3 0x14000 0x200 bored systq
98691 80827 0 0 3 0x14000 0x200 tmoslp softclockmp
62764 478320 0 0 3 0x14000 0x40000200 tmoslp softclock
92447 359963 0 0 3 0x14000 0x40000200 idle0
1 146487 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 72815 (syz-executor) thread 0xffff800045fe74e8 (80212)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83aafe80)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2 Xsyscall+0x128
Process 94166 (syz-executor) thread 0xffff800045fe6028 (207194)
exclusive rrwlock inode r = 0 (0xfffff4006b0bd570)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1759
#8 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293
#9 VOP_SYMLINK+0x119 sys/kern/vfs_vops.c:432
#10 dosymlinkat+0x1e0 sys/kern/vfs_syscalls.c:1761
#11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff4006f0615b8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 dosymlinkat+0xef sys/kern/vfs_syscalls.c:1747
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11065 12272K 12338K 166960K 12397 0
pcb 18 12K 12K 166960K 61 0
rtable 227 7K 7K 166960K 368 0
pf 34 17K 24K 166960K 89 0
ifaddr 40 7K 7K 166960K 49 0
ifgroup 48 2K 2K 166960K 67 0
sysctl 1 1K 9K 166960K 6 0
counters 68 36K 37K 166960K 80 0
ioctlops 0 0K 4K 166960K 1522 0
iov 0 0K 4K 166960K 12 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1362 86K 86K 166960K 1653 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 43 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 15 57K 110K 166960K 342 0
sigio 0 0K 0K 166960K 2 0
proc 12 17K 180K 166960K 593 0
subproc 70 4K 5K 166960K 133 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 35 0
in_multi 88 6K 7K 166960K 105 0
ether_multi 1 0K 0K 166960K 3 0
mrt 1 0K 0K 166960K 12 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 403 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 124 78K 174K 166960K 4773 0
UVM aobj 10 2K 2K 166960K 10 0
pinsyscall 16 32K 99K 166960K 1495 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 4 0
NDP 11 0K 1K 166960K 31 0
temp 42 9119K 9150K 166960K 8100 0
kqueue 1 2K 24K 166960K 63 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 28 0 0 1 0 1 1 0 8 0
rtpcb 120 37 0 37 1 0 1 1 0 8 1
rtentry 176 115 0 12 6 0 6 6 0 8 0
unpcb 144 196 0 196 3 0 3 3 0 8 3
syncache 336 11 0 11 1 0 1 1 0 8 1
tcpcb 736 139 0 138 7 0 7 7 0 8 6
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 396 0 306 8 0 8 8 0 8 0
nd6 152 27 0 3 1 0 1 1 0 8 0
pkpcb 40 35 0 35 1 0 1 1 0 8 1
kcovpl 48 14 0 7 1 0 1 1 0 8 0
ppxss 1192 3 0 3 1 0 1 1 0 8 1
pffrag 232 2 0 1 1 0 1 1 0 482 0
pffrnode 88 2 0 1 1 0 1 1 0 8 0
pffrent 40 4 0 3 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
pfrktable 1344 1 0 1 1 0 1 1 0 8 1
pfanchor 1288 5 0 2 1 0 1 1 0 8 0
pfqueue 320 1 0 1 1 0 1 1 0 8 1
pfstitem 24 40 0 0 1 0 1 1 0 8 0
pfstkey 128 42 0 2 2 0 2 2 0 8 0
pfstate 448 40 0 1 5 0 5 5 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 478 0 44 29 0 29 29 0 8 1
art_table 40 479 0 44 5 0 5 5 0 8 0
art_node 32 115 0 21 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0
semapl 72 41 0 37 1 0 1 1 0 8 0
shmpl 112 7 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1884 0 408 93 0 93 93 0 8 0
ffsino 296 1884 0 408 115 0 115 115 0 8 0
nchpl 144 2323 0 615 64 0 64 64 0 8 0
rtmask 32 1 0 1 1 0 1 1 0 8 1
vnodes 216 2217 0 0 124 0 124 124 0 8 0
namei 1024 7901 0 7899 3 0 3 3 0 8 2
percpumem 16 56 0 6 1 0 1 1 0 8 0
kstatmem 264 33 0 8 3 0 3 3 0 8 1
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 9893 0 9893 11 3 8 8 1 8 8
plimitpl 152 60 0 51 1 0 1 1 0 8 0
sigapl 424 659 0 606 7 0 7 7 0 8 0
knotepl 120 647 0 0 20 0 20 20 0 8 0
kqueuepl 224 74 0 73 1 0 1 1 0 8 0
pipepl 344 157 0 129 3 0 3 3 0 8 0
fdescpl 528 623 0 606 3 0 3 3 0 8 1
filepl 160 3160 0 2919 14 0 14 14 0 8 3
lockfpl 104 233 0 231 1 0 1 1 0 8 0
lockfspl 48 82 0 80 1 0 1 1 0 8 0
sessionpl 144 36 0 34 1 0 1 1 0 8 0
pgrppl 48 51 0 41 1 0 1 1 0 8 0
ucredpl 104 297 0 294 1 0 1 1 0 8 0
zombiepl 144 606 0 606 1 0 1 1 0 8 1
processpl 1232 659 0 606 5 0 5 5 0 8 0
procpl 664 968 0 904 6 0 6 6 0 8 0
sockpl 752 672 0 582 15 5 10 14 0 8 1
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 4 0 0 1 0 1 1 0 8 0
mcl9k128 9344 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 116 0 0 15 0 15 15 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 17 0 0 3 0 3 3 0 8 0
mextrefs 64 17 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 157 0 0 10 0 10 10 0 8 0
bufpl 272 4280 0 105 279 0 279 279 0 8 0
anonpl 32 9431 0 0 76 0 76 76 0 247 0
amapchunkpl 152 14900 0 14559 25 1 24 25 0 158 10
amappl16 200 2356 0 2337 21 11 10 16 0 8 8
amappl15 192 7 0 7 1 1 0 1 0 8 0
amappl14 184 427 0 427 1 0 1 1 0 8 1
amappl13 176 133 0 133 1 0 1 1 0 8 1
amappl12 168 884 0 868 2 0 2 2 0 8 0
amappl11 160 32 0 32 1 1 0 1 0 8 0
amappl10 152 96 0 96 1 0 1 1 0 8 1
amappl9 144 277 0 277 1 1 0 1 0 8 0
amappl8 136 98 0 97 1 0 1 1 0 8 0
amappl7 128 147 0 145 1 0 1 1 0 8 0
amappl6 120 173 0 172 1 0 1 1 0 8 0
amappl5 112 98 0 98 1 0 1 1 0 8 1
amappl4 104 299 0 297 1 0 1 1 0 8 0
amappl3 96 2732 0 2657 4 0 4 4 0 8 1
amappl2 88 544 0 536 2 0 2 2 0 8 0
amappl1 80 11245 0 11162 14 0 14 14 0 8 6
amappl 88 3967 0 3853 4 0 4 4 0 92 1
uvmvnodes 80 102 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma2048 2048 2 0 2 1 0 1 1 0 8 1
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 9 0 0 1 0 1 1 0 8 0
uaddrrnd 24 623 0 606 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 623 0 606 1 0 1 1 0 8 0
vmmpekpl 168 7205 0 7164 3 0 3 3 0 8 1
vmmpepl 168 49093 0 48366 97 0 97 97 0 357 63
vmsppl 488 622 0 606 5 1 4 5 0 8 1
rwobjpl 80 17153 0 16770 27 0 27 27 0 8 6
pdppl 4096 1253 0 1212 93 50 43 81 0 8 2
pvpl 32 16928 0 0 137 0 137 137 0 265 0
pmappl 256 622 0 606 3 0 3 3 0 8 1
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 554 0 53 15 0 15 15 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff839ceff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670
comcnputc(800,74) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,74) at comcnputc+0x250 sys/dev/ic/com.c:1274
cnputc(74) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(74) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834add1b) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff80002a401dd0) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff800045fe6d20,fffff400647c5a50,ffff80002a401f90) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe6d20,ffff80002a4020e0,ffff80002a402030) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
end trace frame: 0xffff80002a4020d0, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff839ceff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670
comcnputc(800,74) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,74) at comcnputc+0x250 sys/dev/ic/com.c:1274
cnputc(74) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(74) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834add1b) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff80002a401dd0) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff80002a401dd0) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff800045fe6d20,fffff400647c5a50,ffff80002a401f90) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe6d20,ffff80002a4020e0,ffff80002a402030) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a4020e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a4020e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xaa2c7ce1b0, count: -16
ddb{0}> machine ddbcpu 1
Stopped at dovutimens+0x368: movl 0x98(%rax),%r12d
dovutimens(ffff800045fe74e8,fffff400647c5a50,ffff80002a24d170) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff800045fe74e8,ffff80002a24d2c0,ffff80002a24d210) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff80002a24d2c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a24d2c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9d39f8350, count: 11
ddb{1}>
---
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