uvm_fault: amap_copy
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syzbot
Jul 30, 2026, 7:47:41 PMJul 30
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: a3419d81e108 more zip codes for Frisco TX and Mechanicsbur..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12efb5b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=adecac455f374480ff9a
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f566ad97bf3a/disk-a3419d81.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/3c586ee2f95e/bsd-a3419d81.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a224ba79cead/kernel-a3419d81.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+adecac...@syzkaller.appspotmail.com
uvm_fault(0xfffff28073086020, 0x7fff0000800f, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at amap_copy+0x570: movl 0x10(%r14),%ebx
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*234477 72691 32767 0x10 0 1 syz-executor
353434 38573 32767 0x10 0 0 syz-executor
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: 9
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(0xfffff28073086020, 0x7fff0000800f, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: -6
ddb{1}> show registers
rdi 0x11
rsi 0x22
rbp 0xffff80002a30c2e0
rbx 0x22
rdx 0
rcx 0x1
rax 0xffff800001593f20
r8 0x98
r9 0x30698e73001
r10 0x9dc9a8dc9019666d
r11 0x46c12baa4637a612
r12 0x22
r13 0x1
r14 0x7fff00007fff
r15 0x10
rip 0xffffffff8270a180 amap_copy+0x570
cs 0x8
rflags 0x10206 __ALIGN_SIZE+0xf206
rsp 0xffff80002a30c230
ss 0
amap_copy+0x570: movl 0x10(%r14),%ebx
ddb{1}> show proc
PROC (syz-executor) tid=234477 pid=72691 tcnt=1 stat=onproc
flags process=10<SUGID> proc=0
runpri=50, usrpri=50, slppri=16, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003a7dcd20,0xffff80003a7dda28
process=0xffff800045fe9358 user=0xffff80002a307000, vmspace=0xfffff28073086020
estcpu=9, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
*72691 234477 70883 32767 7 0x10 0 syz-executor
38573 353434 12471 32767 7 0x10 0 syz-executor
38573 81488 12471 32767 2 0x10 0x4000000 syz-executor
43673 248223 7038 32767 2 0x10 0 syz-executor
43673 273158 7038 32767 3 0x10 0x4000080 fsleep syz-executor
43673 141925 7038 32767 3 0x10 0x4000080 fsleep syz-executor
43673 136074 7038 32767 3 0x10 0x4000080 fsleep syz-executor
23846 295326 31171 32767 2 0x10 0 syz-executor
23846 428369 31171 32767 3 0x10 0x4000080 fsleep syz-executor
23846 195481 31171 32767 3 0x10 0x4000080 fsleep syz-executor
23846 497840 31171 32767 3 0x10 0x4000080 fsleep syz-executor
99270 115940 6883 0 2 0x2 0 syz-executor
70883 64563 14235 32767 3 0x10 0x80 nanoslp syz-executor
65524 466340 532 32767 2 0x10 0 syz-executor
20597 259575 15114 32767 3 0x10 0x80 nanoslp syz-executor
31171 362701 17948 32767 3 0x10 0x80 nanoslp syz-executor
7038 78450 12345 32767 3 0x10 0x80 nanoslp syz-executor
12471 137476 68824 32767 3 0x10 0x80 nanoslp syz-executor
16114 412185 30052 32767 2 0x10 0 syz-executor
15114 413434 6883 0 3 0x2 0x80 wait syz-executor
14235 198861 6883 0 3 0x2 0x80 wait syz-executor
532 58548 6883 0 3 0x2 0x80 wait syz-executor
17948 314037 6883 0 3 0x2 0x80 wait syz-executor
12345 483699 6883 0 3 0x2 0x80 wait syz-executor
30052 42868 6883 0 3 0x2 0x80 wait syz-executor
68824 497419 6883 0 3 0x2 0x80 wait syz-executor
6883 176187 7112 0 3 0x2 0x80 kqread syz-executor
7112 307468 5598 0 3 0x100002 0x88 sigsusp ksh
5598 116840 83402 0 3 0x10 0x88 kqread sshd-session
83402 451979 99555 0 3 0x12 0x80 kqread sshd-session
79744 229092 1 0 3 0x100003 0x80 ttyin getty
99555 477999 1 0 3 0 0x88 kqread sshd
50386 143345 70968 73 3 0x1100010 0x80 kqread syslogd
70968 309401 1 0 3 0x100002 0x80 sbwait syslogd
87188 325236 1 0 3 0x100000 0x80 kqread resolvd
38749 434797 7134 77 3 0x100012 0x80 kqread dhcpleased
67487 338192 7134 77 3 0x100012 0x80 kqread dhcpleased
7134 156978 1 0 3 0 0x80 kqread dhcpleased
5072 196315 0 0 3 0x14000 0x200 bored smr
95032 360565 0 0 3 0x14000 0x200 pgzero zerothread
41456 224767 0 0 3 0x14000 0x200 aiodoned aiodoned
39330 423921 0 0 3 0x14000 0x200 syncer update
81520 210387 0 0 3 0x14000 0x200 cleaner cleaner
17455 285236 0 0 3 0x14000 0x200 reaper reaper
16418 505306 0 0 3 0x14000 0x200 pgdaemon pagedaemon
54173 50032 0 0 3 0x14000 0x200 bored viomb
10628 469372 0 0 3 0x14000 0x40000200 acpi0 acpi0
47664 118193 0 0 3 0x14000 0x40000200 idle1
35396 6162 0 0 3 0x14000 0x200 bored softnet1
82271 85450 0 0 3 0x14000 0x200 bored softnet0
50737 77855 0 0 3 0x14000 0x200 bored systqmp
22293 305774 0 0 3 0x14000 0x200 bored systq
85289 170910 0 0 3 0x14000 0x200 tmoslp softclockmp
49494 177818 0 0 3 0x14000 0x40000200 tmoslp softclock
5134 79688 0 0 3 0x14000 0x40000200 idle0
1 346078 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 72691 (syz-executor) thread 0xffff80003a7dca88 (234477)
exclusive rwlock amaplk r = 0 (0xfffff2806e20d180)
#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 amap_copy+0x28b sys/uvm/uvm_amap.c:606
#3 uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
exclusive rwlock vmmaplk r = 0 (0xfffff28073086120)
#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_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 65524 (syz-executor) thread 0xffff800045fe7778 (466340)
exclusive rrwlock inode r = 0 (0xfffff28065d23690)
#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_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff2806d803e98)
#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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048
#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
Process 16114 (syz-executor) thread 0xffff800045fee2b0 (412185)
exclusive rrwlock inode r = 0 (0xfffff28065d23440)
#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 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff2806d4c59f0)
#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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#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 11046 12016K 12034K 166960K 12140 0
pcb 17 12K 12K 166960K 17 0
rtable 215 6K 7K 166960K 347 0
pf 29 16K 16K 166960K 31 0
ifaddr 38 6K 7K 166960K 44 0
ifgroup 46 2K 2K 166960K 50 0
sysctl 4 1K 9K 166960K 8 0
counters 68 36K 37K 166960K 70 0
ioctlops 0 0K 2K 166960K 33 0
iov 0 0K 4K 166960K 6 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1287 81K 81K 166960K 1393 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 6 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 22 78K 121K 166960K 217 0
sigio 0 0K 0K 166960K 1 0
proc 58 99K 131K 166960K 505 0
subproc 63 3K 4K 166960K 108 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 10 0
in_multi 88 6K 7K 166960K 103 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 4 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 55 254K 254K 166960K 55 0
exec 0 0K 1K 166960K 376 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 223 151K 169K 166960K 3548 0
UVM aobj 6 2K 2K 166960K 6 0
pinsyscall 43 86K 110K 166960K 1289 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 10 0K 2K 166960K 27 0
temp 32 9118K 9122K 166960K 3900 0
kqueue 15 24K 24K 166960K 38 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 35 0 32 1 0 1 1 0 8 0
rtentry 176 111 0 12 5 0 5 5 0 8 0
unpcb 144 60 0 45 1 0 1 1 0 8 0
syncache 336 5 0 5 1 0 1 1 0 8 1
tcpcb 736 30 0 26 2 0 2 2 0 8 1
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 110 0 103 2 0 2 2 0 8 1
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 12 0 5 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 452 0 44 29 0 29 29 0 8 0
art_table 40 453 0 44 5 0 5 5 0 8 0
art_node 32 111 0 21 1 0 1 1 0 8 0
semupl 112 3 0 3 1 0 1 1 0 8 1
semapl 72 4 0 0 1 0 1 1 0 8 0
shmpl 112 3 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1639 0 171 92 0 92 92 0 8 0
ffsino 296 1639 0 171 114 0 114 114 0 8 0
nchpl 144 1914 0 218 64 0 64 64 0 8 0
vnodes 216 1756 0 0 98 0 98 98 0 8 0
namei 1024 5723 0 5722 2 0 2 2 0 8 1
percpumem 16 51 0 1 1 0 1 1 0 8 0
kstatmem 264 25 0 2 2 0 2 2 0 8 0
scxspl 216 6857 0 6857 9 1 8 8 1 8 8
plimitpl 152 49 0 26 2 0 2 2 0 8 1
sigapl 424 498 0 448 7 0 7 7 0 8 0
knotepl 120 128 0 0 4 0 4 4 0 8 0
kqueuepl 224 39 0 28 1 0 1 1 0 8 0
pipepl 344 140 0 112 3 0 3 3 0 8 0
fdescpl 528 482 0 448 3 0 3 3 0 8 0
filepl 160 1744 0 1548 10 0 10 10 0 8 0
lockfpl 104 41 0 39 1 0 1 1 0 8 0
lockfspl 48 12 0 10 1 0 1 1 0 8 0
sessionpl 144 29 0 14 1 0 1 1 0 8 0
pgrppl 48 43 0 20 1 0 1 1 0 8 0
ucredpl 104 158 0 140 1 0 1 1 0 8 0
zombiepl 144 449 0 448 1 0 1 1 0 8 0
processpl 1232 498 0 448 5 0 5 5 0 8 0
procpl 664 587 0 530 6 0 6 6 0 8 0
sockpl 752 205 0 180 5 0 5 5 0 8 2
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 132 0 0 17 0 17 17 0 8 0
mcl2k 2048 30 0 0 4 0 4 4 0 8 0
mextrefs 64 26 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 212 0 0 14 0 14 14 0 8 0
bufpl 272 2312 0 102 148 0 148 148 0 8 0
anonpl 32 9427 0 0 76 0 76 76 0 247 0
amapchunkpl 152 10183 0 9704 29 0 29 29 0 158 6
amappl16 200 1920 0 1904 14 4 10 14 0 8 8
amappl15 192 6 0 6 1 1 0 1 0 8 0
amappl14 184 398 0 397 1 0 1 1 0 8 0
amappl13 176 113 0 102 1 0 1 1 0 8 0
amappl12 168 710 0 679 2 0 2 2 0 8 0
amappl11 160 8 0 8 1 1 0 1 0 8 0
amappl10 152 59 0 48 1 0 1 1 0 8 0
amappl9 144 275 0 275 1 1 0 1 0 8 0
amappl8 136 90 0 89 1 0 1 1 0 8 0
amappl7 128 138 0 127 1 0 1 1 0 8 0
amappl6 120 149 0 148 1 0 1 1 0 8 0
amappl5 112 88 0 81 1 0 1 1 0 8 0
amappl4 104 250 0 236 1 0 1 1 0 8 0
amappl3 96 1762 0 1649 5 1 4 4 0 8 0
amappl2 88 504 0 450 2 0 2 2 0 8 0
amappl1 80 10419 0 9851 14 0 14 14 0 8 0
amappl 88 2866 0 2705 5 0 5 5 0 92 0
uvmvnodes 80 96 0 0 2 0 2 2 0 8 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 5 0 0 1 0 1 1 0 8 0
uaddrrnd 24 482 0 448 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 482 0 448 1 0 1 1 0 8 0
vmmpekpl 168 5804 0 5761 2 0 2 2 0 8 0
vmmpepl 168 39753 0 37870 102 0 102 102 0 357 14
vmsppl 488 481 0 448 7 1 6 6 0 8 0
rwobjpl 80 14687 0 13766 25 0 25 25 0 8 2
pdppl 4096 971 0 896 105 24 81 95 0 8 6
pvpl 32 15333 0 0 124 0 124 124 0 265 0
pmappl 256 481 0 448 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 428 0 27 12 0 12 12 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83978ff0) 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
end of kernel
end trace frame: 0x758925f83b00, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff83978ff0) 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
end of kernel
end trace frame: 0x758925f83b00, count: -3
ddb{0}> machine ddbcpu 1
Stopped at amap_copy+0x570: movl 0x10(%r14),%ebx
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: 9
ddb{1}> trace
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: -6
---
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.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#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: a3419d81e108 more zip codes for Frisco TX and Mechanicsbur..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12efb5b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=adecac455f374480ff9a
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f566ad97bf3a/disk-a3419d81.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/3c586ee2f95e/bsd-a3419d81.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a224ba79cead/kernel-a3419d81.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+adecac...@syzkaller.appspotmail.com
uvm_fault(0xfffff28073086020, 0x7fff0000800f, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at amap_copy+0x570: movl 0x10(%r14),%ebx
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*234477 72691 32767 0x10 0 1 syz-executor
353434 38573 32767 0x10 0 0 syz-executor
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: 9
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(0xfffff28073086020, 0x7fff0000800f, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: -6
ddb{1}> show registers
rdi 0x11
rsi 0x22
rbp 0xffff80002a30c2e0
rbx 0x22
rdx 0
rcx 0x1
rax 0xffff800001593f20
r8 0x98
r9 0x30698e73001
r10 0x9dc9a8dc9019666d
r11 0x46c12baa4637a612
r12 0x22
r13 0x1
r14 0x7fff00007fff
r15 0x10
rip 0xffffffff8270a180 amap_copy+0x570
cs 0x8
rflags 0x10206 __ALIGN_SIZE+0xf206
rsp 0xffff80002a30c230
ss 0
amap_copy+0x570: movl 0x10(%r14),%ebx
ddb{1}> show proc
PROC (syz-executor) tid=234477 pid=72691 tcnt=1 stat=onproc
flags process=10<SUGID> proc=0
runpri=50, usrpri=50, slppri=16, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003a7dcd20,0xffff80003a7dda28
process=0xffff800045fe9358 user=0xffff80002a307000, vmspace=0xfffff28073086020
estcpu=9, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
*72691 234477 70883 32767 7 0x10 0 syz-executor
38573 353434 12471 32767 7 0x10 0 syz-executor
38573 81488 12471 32767 2 0x10 0x4000000 syz-executor
43673 248223 7038 32767 2 0x10 0 syz-executor
43673 273158 7038 32767 3 0x10 0x4000080 fsleep syz-executor
43673 141925 7038 32767 3 0x10 0x4000080 fsleep syz-executor
43673 136074 7038 32767 3 0x10 0x4000080 fsleep syz-executor
23846 295326 31171 32767 2 0x10 0 syz-executor
23846 428369 31171 32767 3 0x10 0x4000080 fsleep syz-executor
23846 195481 31171 32767 3 0x10 0x4000080 fsleep syz-executor
23846 497840 31171 32767 3 0x10 0x4000080 fsleep syz-executor
99270 115940 6883 0 2 0x2 0 syz-executor
70883 64563 14235 32767 3 0x10 0x80 nanoslp syz-executor
65524 466340 532 32767 2 0x10 0 syz-executor
20597 259575 15114 32767 3 0x10 0x80 nanoslp syz-executor
31171 362701 17948 32767 3 0x10 0x80 nanoslp syz-executor
7038 78450 12345 32767 3 0x10 0x80 nanoslp syz-executor
12471 137476 68824 32767 3 0x10 0x80 nanoslp syz-executor
16114 412185 30052 32767 2 0x10 0 syz-executor
15114 413434 6883 0 3 0x2 0x80 wait syz-executor
14235 198861 6883 0 3 0x2 0x80 wait syz-executor
532 58548 6883 0 3 0x2 0x80 wait syz-executor
17948 314037 6883 0 3 0x2 0x80 wait syz-executor
12345 483699 6883 0 3 0x2 0x80 wait syz-executor
30052 42868 6883 0 3 0x2 0x80 wait syz-executor
68824 497419 6883 0 3 0x2 0x80 wait syz-executor
6883 176187 7112 0 3 0x2 0x80 kqread syz-executor
7112 307468 5598 0 3 0x100002 0x88 sigsusp ksh
5598 116840 83402 0 3 0x10 0x88 kqread sshd-session
83402 451979 99555 0 3 0x12 0x80 kqread sshd-session
79744 229092 1 0 3 0x100003 0x80 ttyin getty
99555 477999 1 0 3 0 0x88 kqread sshd
50386 143345 70968 73 3 0x1100010 0x80 kqread syslogd
70968 309401 1 0 3 0x100002 0x80 sbwait syslogd
87188 325236 1 0 3 0x100000 0x80 kqread resolvd
38749 434797 7134 77 3 0x100012 0x80 kqread dhcpleased
67487 338192 7134 77 3 0x100012 0x80 kqread dhcpleased
7134 156978 1 0 3 0 0x80 kqread dhcpleased
5072 196315 0 0 3 0x14000 0x200 bored smr
95032 360565 0 0 3 0x14000 0x200 pgzero zerothread
41456 224767 0 0 3 0x14000 0x200 aiodoned aiodoned
39330 423921 0 0 3 0x14000 0x200 syncer update
81520 210387 0 0 3 0x14000 0x200 cleaner cleaner
17455 285236 0 0 3 0x14000 0x200 reaper reaper
16418 505306 0 0 3 0x14000 0x200 pgdaemon pagedaemon
54173 50032 0 0 3 0x14000 0x200 bored viomb
10628 469372 0 0 3 0x14000 0x40000200 acpi0 acpi0
47664 118193 0 0 3 0x14000 0x40000200 idle1
35396 6162 0 0 3 0x14000 0x200 bored softnet1
82271 85450 0 0 3 0x14000 0x200 bored softnet0
50737 77855 0 0 3 0x14000 0x200 bored systqmp
22293 305774 0 0 3 0x14000 0x200 bored systq
85289 170910 0 0 3 0x14000 0x200 tmoslp softclockmp
49494 177818 0 0 3 0x14000 0x40000200 tmoslp softclock
5134 79688 0 0 3 0x14000 0x40000200 idle0
1 346078 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 72691 (syz-executor) thread 0xffff80003a7dca88 (234477)
exclusive rwlock amaplk r = 0 (0xfffff2806e20d180)
#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 amap_copy+0x28b sys/uvm/uvm_amap.c:606
#3 uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
exclusive rwlock vmmaplk r = 0 (0xfffff28073086120)
#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_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 65524 (syz-executor) thread 0xffff800045fe7778 (466340)
exclusive rrwlock inode r = 0 (0xfffff28065d23690)
#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_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff2806d803e98)
#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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048
#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
Process 16114 (syz-executor) thread 0xffff800045fee2b0 (412185)
exclusive rrwlock inode r = 0 (0xfffff28065d23440)
#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 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff2806d4c59f0)
#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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#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 11046 12016K 12034K 166960K 12140 0
pcb 17 12K 12K 166960K 17 0
rtable 215 6K 7K 166960K 347 0
pf 29 16K 16K 166960K 31 0
ifaddr 38 6K 7K 166960K 44 0
ifgroup 46 2K 2K 166960K 50 0
sysctl 4 1K 9K 166960K 8 0
counters 68 36K 37K 166960K 70 0
ioctlops 0 0K 2K 166960K 33 0
iov 0 0K 4K 166960K 6 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1287 81K 81K 166960K 1393 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 6 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 22 78K 121K 166960K 217 0
sigio 0 0K 0K 166960K 1 0
proc 58 99K 131K 166960K 505 0
subproc 63 3K 4K 166960K 108 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 10 0
in_multi 88 6K 7K 166960K 103 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 4 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 55 254K 254K 166960K 55 0
exec 0 0K 1K 166960K 376 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 223 151K 169K 166960K 3548 0
UVM aobj 6 2K 2K 166960K 6 0
pinsyscall 43 86K 110K 166960K 1289 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 10 0K 2K 166960K 27 0
temp 32 9118K 9122K 166960K 3900 0
kqueue 15 24K 24K 166960K 38 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 35 0 32 1 0 1 1 0 8 0
rtentry 176 111 0 12 5 0 5 5 0 8 0
unpcb 144 60 0 45 1 0 1 1 0 8 0
syncache 336 5 0 5 1 0 1 1 0 8 1
tcpcb 736 30 0 26 2 0 2 2 0 8 1
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 110 0 103 2 0 2 2 0 8 1
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 12 0 5 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 452 0 44 29 0 29 29 0 8 0
art_table 40 453 0 44 5 0 5 5 0 8 0
art_node 32 111 0 21 1 0 1 1 0 8 0
semupl 112 3 0 3 1 0 1 1 0 8 1
semapl 72 4 0 0 1 0 1 1 0 8 0
shmpl 112 3 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1639 0 171 92 0 92 92 0 8 0
ffsino 296 1639 0 171 114 0 114 114 0 8 0
nchpl 144 1914 0 218 64 0 64 64 0 8 0
vnodes 216 1756 0 0 98 0 98 98 0 8 0
namei 1024 5723 0 5722 2 0 2 2 0 8 1
percpumem 16 51 0 1 1 0 1 1 0 8 0
kstatmem 264 25 0 2 2 0 2 2 0 8 0
scxspl 216 6857 0 6857 9 1 8 8 1 8 8
plimitpl 152 49 0 26 2 0 2 2 0 8 1
sigapl 424 498 0 448 7 0 7 7 0 8 0
knotepl 120 128 0 0 4 0 4 4 0 8 0
kqueuepl 224 39 0 28 1 0 1 1 0 8 0
pipepl 344 140 0 112 3 0 3 3 0 8 0
fdescpl 528 482 0 448 3 0 3 3 0 8 0
filepl 160 1744 0 1548 10 0 10 10 0 8 0
lockfpl 104 41 0 39 1 0 1 1 0 8 0
lockfspl 48 12 0 10 1 0 1 1 0 8 0
sessionpl 144 29 0 14 1 0 1 1 0 8 0
pgrppl 48 43 0 20 1 0 1 1 0 8 0
ucredpl 104 158 0 140 1 0 1 1 0 8 0
zombiepl 144 449 0 448 1 0 1 1 0 8 0
processpl 1232 498 0 448 5 0 5 5 0 8 0
procpl 664 587 0 530 6 0 6 6 0 8 0
sockpl 752 205 0 180 5 0 5 5 0 8 2
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 132 0 0 17 0 17 17 0 8 0
mcl2k 2048 30 0 0 4 0 4 4 0 8 0
mextrefs 64 26 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 212 0 0 14 0 14 14 0 8 0
bufpl 272 2312 0 102 148 0 148 148 0 8 0
anonpl 32 9427 0 0 76 0 76 76 0 247 0
amapchunkpl 152 10183 0 9704 29 0 29 29 0 158 6
amappl16 200 1920 0 1904 14 4 10 14 0 8 8
amappl15 192 6 0 6 1 1 0 1 0 8 0
amappl14 184 398 0 397 1 0 1 1 0 8 0
amappl13 176 113 0 102 1 0 1 1 0 8 0
amappl12 168 710 0 679 2 0 2 2 0 8 0
amappl11 160 8 0 8 1 1 0 1 0 8 0
amappl10 152 59 0 48 1 0 1 1 0 8 0
amappl9 144 275 0 275 1 1 0 1 0 8 0
amappl8 136 90 0 89 1 0 1 1 0 8 0
amappl7 128 138 0 127 1 0 1 1 0 8 0
amappl6 120 149 0 148 1 0 1 1 0 8 0
amappl5 112 88 0 81 1 0 1 1 0 8 0
amappl4 104 250 0 236 1 0 1 1 0 8 0
amappl3 96 1762 0 1649 5 1 4 4 0 8 0
amappl2 88 504 0 450 2 0 2 2 0 8 0
amappl1 80 10419 0 9851 14 0 14 14 0 8 0
amappl 88 2866 0 2705 5 0 5 5 0 92 0
uvmvnodes 80 96 0 0 2 0 2 2 0 8 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 5 0 0 1 0 1 1 0 8 0
uaddrrnd 24 482 0 448 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 482 0 448 1 0 1 1 0 8 0
vmmpekpl 168 5804 0 5761 2 0 2 2 0 8 0
vmmpepl 168 39753 0 37870 102 0 102 102 0 357 14
vmsppl 488 481 0 448 7 1 6 6 0 8 0
rwobjpl 80 14687 0 13766 25 0 25 25 0 8 2
pdppl 4096 971 0 896 105 24 81 95 0 8 6
pvpl 32 15333 0 0 124 0 124 124 0 265 0
pmappl 256 481 0 448 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 428 0 27 12 0 12 12 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83978ff0) 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
end of kernel
end trace frame: 0x758925f83b00, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff83978ff0) 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
end of kernel
end trace frame: 0x758925f83b00, count: -3
ddb{0}> machine ddbcpu 1
Stopped at amap_copy+0x570: movl 0x10(%r14),%ebx
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: 9
ddb{1}> trace
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_copy(fffff28073086020,fffff2806d520560,2,1,30698e73000,30698e73001) at amap_copy+0x570 sys/uvm/uvm_amap.c:637
uvm_fault_check(ffff80002a30c490,ffff80002a30c4c8,ffff80002a30c500,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747
uvm_fault(fffff28073086020,30698e73000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a30c630,30698e73560) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a30c630) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x785b0a3f6980, count: -6
---
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