assert "next != NULL && next->start <= entry->end" failed in uvm_fault.c (3)
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syzbot
Feb 24, 2022, 12:22:21 AM2/24/22
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 63886b09705b free(3) wants stdlib.h
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1264f112700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=be89fe83d6c004fcb412
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+be89fe...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
157195 52965 32767 0x10 0x4000000 0 syz-executor.1
*285808 52965 32767 0x10 0x4000000 1K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: 7
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: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: -8
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211f6040
rbx 0xffff800020ce9bff
rdx 0
rcx 0
rax 0xffff8000fffee548
r8 0x101010101010101
r9 0x8080808080808080
r10 0xa16c4a253eb5935
r11 0xf80f40c7ecf72d02
r12 0xffff800020ce9a00
r13 0
r14 0
r15 0x1
rip 0xffffffff81d872c8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211f6030
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=285808 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=32, usrpri=84, nice=20
forw=0xffffffffffffffff, list=0xffff8000fffef268,0xffff8000fffefa58
process=0xffff800027b0c020 user=0xffff8000211f1000, vmspace=0xfffffd8069f05a20
estcpu=34, cpticks=2, pctcpu=0.0
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
88854 71804 56322 32767 2 0x10 syz-executor.5
88854 95736 56322 32767 2 0x4000010 syz-executor.5
54224 217383 13600 32767 2 0x10 syz-executor.6
54224 23256 13600 32767 2 0x4000010 syz-executor.6
21700 425437 19265 32767 2 0x10 syz-executor.2
21700 443678 19265 32767 2 0x4000010 syz-executor.2
7088 135525 85079 32767 2 0x10 syz-executor.3
7088 164419 85079 32767 2 0x4000010 syz-executor.3
52965 426477 906 32767 2 0x10 syz-executor.1
52965 157195 906 32767 7 0x4000010 syz-executor.1
*52965 285808 906 32767 7 0x4000010 syz-executor.1
52965 506482 906 32767 2 0x4000010 syz-executor.1
57917 419103 56055 32767 2 0x10 syz-executor.7
57917 90916 56055 32767 2 0x4000010 syz-executor.7
63724 109898 61582 32767 2 0x10 syz-executor.4
63724 143737 61582 32767 2 0x4000010 syz-executor.4
90875 244557 31222 32767 2 0x10 syz-executor.0
90875 174170 31222 32767 2 0x4000010 syz-executor.0
19265 173315 99460 32767 3 0x90 nanoslp syz-executor.2
99460 233679 22743 0 3 0x82 wait syz-executor.2
13600 479261 99477 32767 3 0x90 nanoslp syz-executor.6
99477 393746 22743 0 3 0x82 wait syz-executor.6
906 291346 26266 32767 3 0x90 nanoslp syz-executor.1
26266 460759 22743 0 3 0x82 wait syz-executor.1
85079 343909 32420 32767 3 0x90 nanoslp syz-executor.3
32420 423208 22743 0 3 0x82 wait syz-executor.3
61582 349425 16486 32767 3 0x90 nanoslp syz-executor.4
16486 339302 22743 0 3 0x82 wait syz-executor.4
31222 345305 77139 32767 3 0x90 nanoslp syz-executor.0
77139 455077 22743 0 3 0x82 wait syz-executor.0
17096 190422 0 0 3 0x14200 bored sosplice
56322 384406 52720 32767 3 0x90 nanoslp syz-executor.5
56055 107856 61046 32767 3 0x90 nanoslp syz-executor.7
61046 119427 22743 0 3 0x82 wait syz-executor.7
52720 147571 22743 0 3 0x82 wait syz-executor.5
22743 183742 75629 0 3 0x82 kqread syz-fuzzer
22743 263888 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 523128 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 322264 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 106289 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 276966 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 514200 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 299052 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 112316 75629 0 3 0x4000082 thrsleep syz-fuzzer
75629 289244 50674 0 3 0x10008a sigsusp ksh
50674 454393 88941 0 3 0x9a kqread sshd
27602 291441 1 0 3 0x100083 ttyin getty
88941 165780 1 0 3 0x88 kqread sshd
36822 31285 6454 73 3 0x1100090 kqread syslogd
6454 60399 1 0 3 0x100082 netio syslogd
25025 28149 1 0 3 0x100080 kqread resolvd
88331 372858 8583 77 3 0x100092 kqread dhcpleased
9343 162751 8583 77 3 0x100092 kqread dhcpleased
8583 231954 1 0 3 0x80 kqread dhcpleased
86019 63715 0 0 3 0x14200 bored smr
13373 263344 0 0 2 0x14200 zerothread
62427 192398 0 0 3 0x14200 aiodoned aiodoned
56182 267892 0 0 3 0x14200 syncer update
28915 96952 0 0 3 0x14200 cleaner cleaner
54828 463202 0 0 3 0x14200 reaper reaper
31022 50746 0 0 3 0x14200 pgdaemon pagedaemon
80826 353503 0 0 3 0x14200 bored viomb
58400 338354 0 0 3 0x40014200 acpi0 acpi0
34499 515770 0 0 3 0x40014200 idle1
4812 459631 0 0 3 0x14200 bored softnet
76335 161701 0 0 3 0x14200 bored systqmp
89057 472700 0 0 3 0x14200 bored systq
12674 513730 0 0 3 0x40014200 bored softclock
50583 240844 0 0 3 0x40014200 idle0
1 99629 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 52965 (syz-executor.1) thread 0xffff8000fffef268 (157195)
exclusive rwlock futex r = 0 (0xffffffff8299aec0)
#0 witness_lock+0x44d
#1 sys_futex+0x5c sys/kern/sys_futex.c:108
#2 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#2 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#3 Xsyscall+0x128
Process 52965 (syz-executor.1) thread 0xffff8000fffee548 (285808)
exclusive rwlock amaplk r = 0 (0xfffffd8066cb4ef0)
#0 witness_lock+0x44d
#1 uvm_map_lock_entry+0x36 sys/uvm/uvm_map.c:508
#2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1655
#3 uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
#4 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
shared rwlock vmmaplk r = 0 (0xfffffd8069f05a38)
#0 witness_lock+0x44d
#1 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1600
#2 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b73a20)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416
#3 sleep_finish+0x198 sys/kern/kern_synch.c:437
#4 rw_enter+0x35a sys/kern/kern_rwlock.c:286
#5 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458
#6 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1752
#7 uvm_fault_check+0x603 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline]
#7 uvm_fault_check+0x603 sys/uvm/uvm_fault.c:712
#8 uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#9 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580
#10 sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240
#11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#12 Xsyscall+0x128
exclusive rwlock sysctllk r = 0 (0xffffffff828f0910)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10198 6410K 6419K 78643K 11322 0
pcb 13 12K 14K 78643K 17 0
rtable 272 7K 8K 78643K 1598 0
ifaddr 81 17K 17K 78643K 160 0
sysctl 3 1K 1K 78643K 3 0
counters 56 35K 35K 78643K 78 0
ioctlops 0 0K 2K 78643K 93 0
iov 0 0K 28K 78643K 1405 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1271 79K 79K 78643K 2679 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 13K 78643K 118 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 3641 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 26 97K 125K 78643K 11385 0
sigio 0 0K 0K 78643K 47 0
proc 56 74K 123K 78643K 1367 0
subproc 104 6K 6K 78643K 247 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 981 0
in_multi 99 6K 7K 78643K 362 0
ether_multi 1 0K 0K 78643K 37 0
mrt 2 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 205 917K 917K 78643K 205 0
exec 0 0K 2K 78643K 1925 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 7 26K 26K 78643K 7 0
UVM amap 458 97K 112K 78643K 148341 0
UVM aobj 131 8K 8K 78643K 134 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 250 0
NDP 11 0K 2K 78643K 60 0
temp 125 4703K 4767K 78643K 30489 0
kqueue 12 18K 34K 78643K 3107 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 1048 0 1045 13 12 1 5 0 8 0
rtentry 112 260 0 133 4 0 4 4 0 8 0
unpcb 136 7280 0 7267 64 61 3 6 0 8 2
syncache 296 116 0 116 22 22 0 1 0 8 0
tcpqe 32 125 0 125 14 14 0 1 0 8 0
tcpcb 736 4815 0 4806 148 138 10 19 0 8 8
arp 120 42 0 23 1 0 1 1 0 8 0
ipq 40 9 0 8 5 4 1 1 0 8 0
ipqe 40 71 0 70 5 4 1 1 0 8 0
inpcb 304 26374 0 26356 212 203 9 21 0 8 7
rttmr 72 11 0 8 1 0 1 1 0 8 0
ip6q 72 32 0 31 5 4 1 1 0 8 0
ip6af 40 65 0 64 5 4 1 1 0 8 0
nd6 48 80 0 43 1 0 1 1 0 8 0
kcovpl 48 19 0 11 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1257 0 577 47 4 43 43 0 8 0
art_table 32 1258 0 577 6 0 6 6 0 8 0
art_node 16 259 0 142 1 0 1 1 0 8 0
semapl 112 3639 0 3629 1 0 1 1 0 8 0
shmpl 112 131 0 3 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 15478 0 14026 92 0 92 92 0 8 0
ffsino 272 15478 0 14026 98 0 98 98 0 8 0
nchpl 144 31583 0 29958 62 0 62 62 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 96534 0 96534 5 4 1 2 0 8 1
percpumem 16 51 0 11 1 0 1 1 0 8 0
scxspl 216 113161 0 113161 43 42 1 8 0 8 1
plimitpl 152 2506 0 2484 6 5 1 2 0 8 0
sigapl 424 11637 0 11585 7 1 6 7 0 8 0
futexpl 64 109360 0 109359 8 7 1 1 0 8 0
knotepl 120 750 0 0 12 1 11 11 0 8 0
kqueuepl 216 12826 0 12818 86 81 5 9 0 8 4
pipepl 336 2495 0 2467 73 67 6 14 0 8 3
fdescpl 496 11622 0 11585 7 2 5 6 0 8 0
filepl 152 91364 0 91131 143 128 15 23 0 8 5
lockfpl 104 1717 0 1715 4 3 1 2 0 8 0
lockfspl 48 435 0 433 1 0 1 1 0 8 0
sessionpl 144 34 0 18 1 0 1 1 0 8 0
pgrppl 48 61 0 45 1 0 1 1 0 8 0
ucredpl 96 9391 0 9373 1 0 1 1 0 8 0
zombiepl 144 11585 0 11585 1 0 1 1 0 8 1
processpl 1064 11637 0 11585 5 1 4 4 0 8 0
procpl 672 34033 0 33963 28 21 7 8 0 8 1
sosppl 168 850 0 848 18 17 1 1 0 8 0
sockpl 480 35078 0 35050 629 616 13 36 0 8 8
mcl64k 65536 42 0 0 3 0 3 3 0 8 0
mcl16k 16384 33 0 0 5 2 3 3 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 28 0 0 2 0 2 2 0 8 0
mcl8k 8192 25 0 0 4 1 3 3 0 8 0
mcl4k 4096 33 0 0 4 1 3 3 0 8 0
mcl2k2 2112 11 0 0 1 0 1 1 0 8 0
mcl2k 2048 259 0 0 19 2 17 19 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 13787 0 0 859 0 859 859 0 8 0
bufpl 288 22392 0 16058 453 0 453 453 0 8 0
anonpl 24 3434805 0 3419568 309 196 113 126 0 186 3
amapchunkpl 152 370324 0 369396 155 118 37 49 0 158 1
amappl16 200 37655 0 37244 245 215 30 35 0 8 8
amappl15 192 412 0 404 1 0 1 1 0 8 0
amappl14 184 43 0 42 1 0 1 1 0 8 0
amappl13 176 530 0 529 1 0 1 1 0 8 0
amappl12 168 29 0 26 2 1 1 1 0 8 0
amappl11 160 1178 0 1167 1 0 1 1 0 8 0
amappl10 152 2909 0 2899 1 0 1 1 0 8 0
amappl9 144 4961 0 4952 1 0 1 1 0 8 0
amappl8 136 3171 0 3038 5 0 5 5 0 8 0
amappl7 128 2144 0 2128 1 0 1 1 0 8 0
amappl6 120 4712 0 4680 2 1 1 2 0 8 0
amappl5 112 13224 0 13191 1 0 1 1 0 8 0
amappl4 104 3570 0 3539 2 0 2 2 0 8 0
amappl3 96 1316 0 1305 1 0 1 1 0 8 0
amappl2 88 2300 0 2254 3 1 2 3 0 8 0
amappl1 80 209656 0 209007 30 16 14 18 0 8 0
amappl 88 147179 0 146869 16 8 8 9 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 133 0 3 3 0 3 3 0 8 0
uaddrrnd 24 11622 0 11585 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 11622 0 11585 1 0 1 1 0 8 0
vmmpekpl 168 95396 0 95335 4 0 4 4 0 8 0
vmmpepl 168 1066475 0 1063567 285 153 132 146 0 357 5
vmsppl 368 11621 0 11585 4 0 4 4 0 8 0
rwobjpl 56 267485 0 259972 131 21 110 110 0 8 0
pdppl 4096 23251 0 23170 301 220 81 95 0 8 0
pvpl 32 5780267 0 5759396 565 366 199 260 0 265 9
pmappl 248 11621 0 11585 4 1 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 2122 0 441 49 0 49 49 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 sys/kern/kern_lock.c:147
sleep_setup(ffff8000211f0350,ffff8000fffef268,120,ffffffff8257105b,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374
rwsleep(ffff8000fffef268,ffffffff8299aeb0,120,ffffffff8257105b,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315
futex_wait(648eb5b89c0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260
sys_futex(ffff8000fffef268,ffff8000211f04e0,ffff8000211f0540) at sys_futex+0xf8 sys/kern/sys_futex.c:111
syscall(ffff8000211f05b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f05b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x64939b42d90, count: 2
ddb{0}> trace
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 sys/kern/kern_lock.c:147
sleep_setup(ffff8000211f0350,ffff8000fffef268,120,ffffffff8257105b,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374
rwsleep(ffff8000fffef268,ffffffff8299aeb0,120,ffffffff8257105b,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315
futex_wait(648eb5b89c0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260
sys_futex(ffff8000fffef268,ffff8000211f04e0,ffff8000211f0540) at sys_futex+0xf8 sys/kern/sys_futex.c:111
syscall(ffff8000211f05b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f05b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x64939b42d90, count: -13
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: 7
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: -8
---
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.
syzbot found the following issue on:
HEAD commit: 63886b09705b free(3) wants stdlib.h
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1264f112700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=be89fe83d6c004fcb412
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+be89fe...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
157195 52965 32767 0x10 0x4000000 0 syz-executor.1
*285808 52965 32767 0x10 0x4000000 1K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: 7
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: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: -8
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211f6040
rbx 0xffff800020ce9bff
rdx 0
rcx 0
rax 0xffff8000fffee548
r8 0x101010101010101
r9 0x8080808080808080
r10 0xa16c4a253eb5935
r11 0xf80f40c7ecf72d02
r12 0xffff800020ce9a00
r13 0
r14 0
r15 0x1
rip 0xffffffff81d872c8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211f6030
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=285808 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=32, usrpri=84, nice=20
forw=0xffffffffffffffff, list=0xffff8000fffef268,0xffff8000fffefa58
process=0xffff800027b0c020 user=0xffff8000211f1000, vmspace=0xfffffd8069f05a20
estcpu=34, cpticks=2, pctcpu=0.0
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
88854 71804 56322 32767 2 0x10 syz-executor.5
88854 95736 56322 32767 2 0x4000010 syz-executor.5
54224 217383 13600 32767 2 0x10 syz-executor.6
54224 23256 13600 32767 2 0x4000010 syz-executor.6
21700 425437 19265 32767 2 0x10 syz-executor.2
21700 443678 19265 32767 2 0x4000010 syz-executor.2
7088 135525 85079 32767 2 0x10 syz-executor.3
7088 164419 85079 32767 2 0x4000010 syz-executor.3
52965 426477 906 32767 2 0x10 syz-executor.1
52965 157195 906 32767 7 0x4000010 syz-executor.1
*52965 285808 906 32767 7 0x4000010 syz-executor.1
52965 506482 906 32767 2 0x4000010 syz-executor.1
57917 419103 56055 32767 2 0x10 syz-executor.7
57917 90916 56055 32767 2 0x4000010 syz-executor.7
63724 109898 61582 32767 2 0x10 syz-executor.4
63724 143737 61582 32767 2 0x4000010 syz-executor.4
90875 244557 31222 32767 2 0x10 syz-executor.0
90875 174170 31222 32767 2 0x4000010 syz-executor.0
19265 173315 99460 32767 3 0x90 nanoslp syz-executor.2
99460 233679 22743 0 3 0x82 wait syz-executor.2
13600 479261 99477 32767 3 0x90 nanoslp syz-executor.6
99477 393746 22743 0 3 0x82 wait syz-executor.6
906 291346 26266 32767 3 0x90 nanoslp syz-executor.1
26266 460759 22743 0 3 0x82 wait syz-executor.1
85079 343909 32420 32767 3 0x90 nanoslp syz-executor.3
32420 423208 22743 0 3 0x82 wait syz-executor.3
61582 349425 16486 32767 3 0x90 nanoslp syz-executor.4
16486 339302 22743 0 3 0x82 wait syz-executor.4
31222 345305 77139 32767 3 0x90 nanoslp syz-executor.0
77139 455077 22743 0 3 0x82 wait syz-executor.0
17096 190422 0 0 3 0x14200 bored sosplice
56322 384406 52720 32767 3 0x90 nanoslp syz-executor.5
56055 107856 61046 32767 3 0x90 nanoslp syz-executor.7
61046 119427 22743 0 3 0x82 wait syz-executor.7
52720 147571 22743 0 3 0x82 wait syz-executor.5
22743 183742 75629 0 3 0x82 kqread syz-fuzzer
22743 263888 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 523128 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 322264 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 106289 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 276966 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 514200 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 299052 75629 0 3 0x4000082 thrsleep syz-fuzzer
22743 112316 75629 0 3 0x4000082 thrsleep syz-fuzzer
75629 289244 50674 0 3 0x10008a sigsusp ksh
50674 454393 88941 0 3 0x9a kqread sshd
27602 291441 1 0 3 0x100083 ttyin getty
88941 165780 1 0 3 0x88 kqread sshd
36822 31285 6454 73 3 0x1100090 kqread syslogd
6454 60399 1 0 3 0x100082 netio syslogd
25025 28149 1 0 3 0x100080 kqread resolvd
88331 372858 8583 77 3 0x100092 kqread dhcpleased
9343 162751 8583 77 3 0x100092 kqread dhcpleased
8583 231954 1 0 3 0x80 kqread dhcpleased
86019 63715 0 0 3 0x14200 bored smr
13373 263344 0 0 2 0x14200 zerothread
62427 192398 0 0 3 0x14200 aiodoned aiodoned
56182 267892 0 0 3 0x14200 syncer update
28915 96952 0 0 3 0x14200 cleaner cleaner
54828 463202 0 0 3 0x14200 reaper reaper
31022 50746 0 0 3 0x14200 pgdaemon pagedaemon
80826 353503 0 0 3 0x14200 bored viomb
58400 338354 0 0 3 0x40014200 acpi0 acpi0
34499 515770 0 0 3 0x40014200 idle1
4812 459631 0 0 3 0x14200 bored softnet
76335 161701 0 0 3 0x14200 bored systqmp
89057 472700 0 0 3 0x14200 bored systq
12674 513730 0 0 3 0x40014200 bored softclock
50583 240844 0 0 3 0x40014200 idle0
1 99629 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 52965 (syz-executor.1) thread 0xffff8000fffef268 (157195)
exclusive rwlock futex r = 0 (0xffffffff8299aec0)
#0 witness_lock+0x44d
#1 sys_futex+0x5c sys/kern/sys_futex.c:108
#2 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#2 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#3 Xsyscall+0x128
Process 52965 (syz-executor.1) thread 0xffff8000fffee548 (285808)
exclusive rwlock amaplk r = 0 (0xfffffd8066cb4ef0)
#0 witness_lock+0x44d
#1 uvm_map_lock_entry+0x36 sys/uvm/uvm_map.c:508
#2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1655
#3 uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
#4 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
shared rwlock vmmaplk r = 0 (0xfffffd8069f05a38)
#0 witness_lock+0x44d
#1 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1600
#2 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b73a20)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416
#3 sleep_finish+0x198 sys/kern/kern_synch.c:437
#4 rw_enter+0x35a sys/kern/kern_rwlock.c:286
#5 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458
#6 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1752
#7 uvm_fault_check+0x603 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline]
#7 uvm_fault_check+0x603 sys/uvm/uvm_fault.c:712
#8 uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#9 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580
#10 sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240
#11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#12 Xsyscall+0x128
exclusive rwlock sysctllk r = 0 (0xffffffff828f0910)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10198 6410K 6419K 78643K 11322 0
pcb 13 12K 14K 78643K 17 0
rtable 272 7K 8K 78643K 1598 0
ifaddr 81 17K 17K 78643K 160 0
sysctl 3 1K 1K 78643K 3 0
counters 56 35K 35K 78643K 78 0
ioctlops 0 0K 2K 78643K 93 0
iov 0 0K 28K 78643K 1405 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1271 79K 79K 78643K 2679 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 13K 78643K 118 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 3641 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 26 97K 125K 78643K 11385 0
sigio 0 0K 0K 78643K 47 0
proc 56 74K 123K 78643K 1367 0
subproc 104 6K 6K 78643K 247 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 981 0
in_multi 99 6K 7K 78643K 362 0
ether_multi 1 0K 0K 78643K 37 0
mrt 2 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 205 917K 917K 78643K 205 0
exec 0 0K 2K 78643K 1925 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 7 26K 26K 78643K 7 0
UVM amap 458 97K 112K 78643K 148341 0
UVM aobj 131 8K 8K 78643K 134 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 250 0
NDP 11 0K 2K 78643K 60 0
temp 125 4703K 4767K 78643K 30489 0
kqueue 12 18K 34K 78643K 3107 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 1048 0 1045 13 12 1 5 0 8 0
rtentry 112 260 0 133 4 0 4 4 0 8 0
unpcb 136 7280 0 7267 64 61 3 6 0 8 2
syncache 296 116 0 116 22 22 0 1 0 8 0
tcpqe 32 125 0 125 14 14 0 1 0 8 0
tcpcb 736 4815 0 4806 148 138 10 19 0 8 8
arp 120 42 0 23 1 0 1 1 0 8 0
ipq 40 9 0 8 5 4 1 1 0 8 0
ipqe 40 71 0 70 5 4 1 1 0 8 0
inpcb 304 26374 0 26356 212 203 9 21 0 8 7
rttmr 72 11 0 8 1 0 1 1 0 8 0
ip6q 72 32 0 31 5 4 1 1 0 8 0
ip6af 40 65 0 64 5 4 1 1 0 8 0
nd6 48 80 0 43 1 0 1 1 0 8 0
kcovpl 48 19 0 11 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1257 0 577 47 4 43 43 0 8 0
art_table 32 1258 0 577 6 0 6 6 0 8 0
art_node 16 259 0 142 1 0 1 1 0 8 0
semapl 112 3639 0 3629 1 0 1 1 0 8 0
shmpl 112 131 0 3 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 15478 0 14026 92 0 92 92 0 8 0
ffsino 272 15478 0 14026 98 0 98 98 0 8 0
nchpl 144 31583 0 29958 62 0 62 62 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 96534 0 96534 5 4 1 2 0 8 1
percpumem 16 51 0 11 1 0 1 1 0 8 0
scxspl 216 113161 0 113161 43 42 1 8 0 8 1
plimitpl 152 2506 0 2484 6 5 1 2 0 8 0
sigapl 424 11637 0 11585 7 1 6 7 0 8 0
futexpl 64 109360 0 109359 8 7 1 1 0 8 0
knotepl 120 750 0 0 12 1 11 11 0 8 0
kqueuepl 216 12826 0 12818 86 81 5 9 0 8 4
pipepl 336 2495 0 2467 73 67 6 14 0 8 3
fdescpl 496 11622 0 11585 7 2 5 6 0 8 0
filepl 152 91364 0 91131 143 128 15 23 0 8 5
lockfpl 104 1717 0 1715 4 3 1 2 0 8 0
lockfspl 48 435 0 433 1 0 1 1 0 8 0
sessionpl 144 34 0 18 1 0 1 1 0 8 0
pgrppl 48 61 0 45 1 0 1 1 0 8 0
ucredpl 96 9391 0 9373 1 0 1 1 0 8 0
zombiepl 144 11585 0 11585 1 0 1 1 0 8 1
processpl 1064 11637 0 11585 5 1 4 4 0 8 0
procpl 672 34033 0 33963 28 21 7 8 0 8 1
sosppl 168 850 0 848 18 17 1 1 0 8 0
sockpl 480 35078 0 35050 629 616 13 36 0 8 8
mcl64k 65536 42 0 0 3 0 3 3 0 8 0
mcl16k 16384 33 0 0 5 2 3 3 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 28 0 0 2 0 2 2 0 8 0
mcl8k 8192 25 0 0 4 1 3 3 0 8 0
mcl4k 4096 33 0 0 4 1 3 3 0 8 0
mcl2k2 2112 11 0 0 1 0 1 1 0 8 0
mcl2k 2048 259 0 0 19 2 17 19 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 13787 0 0 859 0 859 859 0 8 0
bufpl 288 22392 0 16058 453 0 453 453 0 8 0
anonpl 24 3434805 0 3419568 309 196 113 126 0 186 3
amapchunkpl 152 370324 0 369396 155 118 37 49 0 158 1
amappl16 200 37655 0 37244 245 215 30 35 0 8 8
amappl15 192 412 0 404 1 0 1 1 0 8 0
amappl14 184 43 0 42 1 0 1 1 0 8 0
amappl13 176 530 0 529 1 0 1 1 0 8 0
amappl12 168 29 0 26 2 1 1 1 0 8 0
amappl11 160 1178 0 1167 1 0 1 1 0 8 0
amappl10 152 2909 0 2899 1 0 1 1 0 8 0
amappl9 144 4961 0 4952 1 0 1 1 0 8 0
amappl8 136 3171 0 3038 5 0 5 5 0 8 0
amappl7 128 2144 0 2128 1 0 1 1 0 8 0
amappl6 120 4712 0 4680 2 1 1 2 0 8 0
amappl5 112 13224 0 13191 1 0 1 1 0 8 0
amappl4 104 3570 0 3539 2 0 2 2 0 8 0
amappl3 96 1316 0 1305 1 0 1 1 0 8 0
amappl2 88 2300 0 2254 3 1 2 3 0 8 0
amappl1 80 209656 0 209007 30 16 14 18 0 8 0
amappl 88 147179 0 146869 16 8 8 9 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 133 0 3 3 0 3 3 0 8 0
uaddrrnd 24 11622 0 11585 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 11622 0 11585 1 0 1 1 0 8 0
vmmpekpl 168 95396 0 95335 4 0 4 4 0 8 0
vmmpepl 168 1066475 0 1063567 285 153 132 146 0 357 5
vmsppl 368 11621 0 11585 4 0 4 4 0 8 0
rwobjpl 56 267485 0 259972 131 21 110 110 0 8 0
pdppl 4096 23251 0 23170 301 220 81 95 0 8 0
pvpl 32 5780267 0 5759396 565 366 199 260 0 265 9
pmappl 248 11621 0 11585 4 1 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 2122 0 441 49 0 49 49 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 sys/kern/kern_lock.c:147
sleep_setup(ffff8000211f0350,ffff8000fffef268,120,ffffffff8257105b,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374
rwsleep(ffff8000fffef268,ffffffff8299aeb0,120,ffffffff8257105b,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315
futex_wait(648eb5b89c0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260
sys_futex(ffff8000fffef268,ffff8000211f04e0,ffff8000211f0540) at sys_futex+0xf8 sys/kern/sys_futex.c:111
syscall(ffff8000211f05b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f05b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x64939b42d90, count: 2
ddb{0}> trace
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x129 sys/kern/kern_lock.c:147
sleep_setup(ffff8000211f0350,ffff8000fffef268,120,ffffffff8257105b,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374
rwsleep(ffff8000fffef268,ffffffff8299aeb0,120,ffffffff8257105b,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315
futex_wait(648eb5b89c0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260
sys_futex(ffff8000fffef268,ffff8000211f04e0,ffff8000211f0540) at sys_futex+0xf8 sys/kern/sys_futex.c:111
syscall(ffff8000211f05b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f05b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x64939b42d90, count: -13
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: 7
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x648ae759be0, count: -8
---
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.
syzbot
Feb 24, 2022, 1:15:20 AM2/24/22
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 63886b09705b free(3) wants stdlib.h
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1389c01e700000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+be89fe...@syzkaller.appspotmail.com
login: panic: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
* 62104 1029 0 0 0x4000000 1K syz-executor.6
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
rbx 0xffff800020ce9bff
rdx 0x3fd
rcx 0
rax 0x9f
r8 0x101010101010101
r9 0x8080808080808080
r10 0x215985550a8be1dc
r11 0xea736bc00f16cc6
ss 0x10
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=84, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff67f0,0xffff8000ffff6aa0
process=0xffff80002122b620 user=0xffff800021354000, vmspace=0xfffffd80721b4180
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
76226 369059 14994 0 7 0 syz-executor.5
76226 198023 14994 0 2 0x4000000 syz-executor.5
76226 496196 14994 0 2 0x4000000 syz-executor.5
52393 209813 57019 0 2 0 syz-executor.0
52393 62156 57019 0 3 0x4000080 fsleep syz-executor.0
52393 498288 57019 0 3 0x4000080 fsleep syz-executor.0
1029 27075 3195 0 2 0 syz-executor.6
1029 48091 3195 0 3 0x4000080 fsleep syz-executor.6
* 1029 62104 3195 0 7 0x4000000 syz-executor.6
4723 64655 65388 0 2 0 syz-executor.4
4723 243123 65388 0 3 0x4000080 fsleep syz-executor.4
4723 6316 65388 0 3 0x4000080 fsleep syz-executor.4
14994 373471 38553 0 3 0x82 nanoslp syz-executor.5
16234 377052 38553 0 2 0x2 syz-executor.2
65388 435822 38553 0 3 0x82 nanoslp syz-executor.4
3195 348549 38553 0 3 0x82 nanoslp syz-executor.6
27331 221622 38553 0 3 0x2 biowait syz-executor.3
91344 489935 38553 0 3 0x82 nanoslp syz-executor.7
83868 259122 38553 0 3 0x82 nanoslp syz-executor.1
57019 377366 38553 0 3 0x82 nanoslp syz-executor.0
38553 40320 86470 0 3 0x82 kqread syz-execprog
38553 151729 86470 0 3 0x4000082 nanoslp syz-execprog
38553 189618 86470 0 3 0x4000082 thrsleep syz-execprog
38553 25731 86470 0 3 0x4000082 thrsleep syz-execprog
38553 50697 86470 0 3 0x4000082 nanoslp syz-execprog
38553 312855 86470 0 3 0x4000082 thrsleep syz-execprog
38553 80044 86470 0 3 0x4000082 thrsleep syz-execprog
38553 86188 86470 0 3 0x4000082 thrsleep syz-execprog
38553 194840 86470 0 3 0x4000082 thrsleep syz-execprog
86470 166398 7858 0 3 0x10008a sigsusp ksh
7858 156878 94853 0 3 0x9a kqread sshd
67442 445098 1 0 3 0x100083 ttyin getty
94853 318325 1 0 3 0x88 kqread sshd
47504 45359 82132 73 3 0x1100090 kqread syslogd
82132 162892 1 0 3 0x100082 netio syslogd
69430 421735 1 0 3 0x100080 kqread resolvd
86907 106477 76763 77 3 0x100092 kqread dhcpleased
6697 327797 76763 77 3 0x100092 kqread dhcpleased
76763 450020 1 0 3 0x80 kqread dhcpleased
47281 218234 0 0 3 0x14200 bored smr
7802 408351 0 0 2 0x14200 zerothread
36801 14140 0 0 3 0x14200 aiodoned aiodoned
18190 261786 0 0 3 0x14200 syncer update
46120 318061 0 0 3 0x14200 cleaner cleaner
87775 149238 0 0 3 0x14200 reaper reaper
16618 211885 0 0 3 0x14200 pgdaemon pagedaemon
42859 384338 0 0 3 0x14200 bored viomb
49299 488667 0 0 3 0x40014200 acpi0 acpi0
92578 116041 0 0 3 0x40014200 idle1
55404 259317 0 0 3 0x14200 bored softnet
44296 109798 0 0 3 0x14200 bored systqmp
44801 324741 0 0 3 0x14200 bored systq
75526 214827 0 0 3 0x40014200 bored softclock
41655 98676 0 0 3 0x40014200 idle0
1 259523 0 0 3 0x82 wait init
exclusive rwlock amaplk r = 0 (0xfffffd80735cec20)
Process 27331 (syz-executor.3) thread 0xffff8000211e8000 (221622)
exclusive rrwlock inode r = 0 (0xfffffd80717a75f8)
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c508f80)
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
pcb 13 8K 8K 78643K 13 0
rtable 238 6K 7K 78643K 348 0
ifaddr 81 16K 16K 78643K 82 0
counters 56 35K 35K 78643K 56 0
ioctlops 0 0K 2K 78643K 33 0
proc 55 74K 111K 78643K 450 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 2K 78643K 608 0
UVM aobj 131 4K 4K 78643K 131 0
temp 52 4687K 4751K 78643K 21335 0
kqueue 12 18K 18K 78643K 25 0
rtentry 112 111 0 1 4 0 4 4 0 8 0
unpcb 136 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 2 0 1 0 8 0
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 18 0 0 1 0 1 1 0 8 0
inpcb 304 57 0 51 1 0 1 1 0 8 0
nd6 48 24 0 0 1 0 1 1 0 8 0
art_table 32 454 0 0 4 0 4 4 0 8 0
art_node 16 110 0 10 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
ffsino 272 10129 0 8700 96 0 96 96 0 8 0
nchpl 144 19028 0 17369 62 0 62 62 0 8 0
percpumem 16 40 0 0 1 0 1 1 0 8 0
scxspl 216 57436 0 57435 21 20 1 8 0 8 0
plimitpl 152 23 0 9 1 0 1 1 0 8 0
sigapl 424 9068 0 9027 6 1 5 6 0 8 0
futexpl 64 44661 0 44656 1 0 1 1 0 8 0
knotepl 120 102 0 0 4 0 4 4 0 8 0
kqueuepl 216 21 0 13 1 0 1 1 0 8 0
pipepl 336 127 0 99 4 1 3 3 0 8 0
fdescpl 496 9054 0 9028 6 2 4 5 0 8 0
filepl 152 10048 0 9920 6 0 6 6 0 8 1
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 25 0 9 1 0 1 1 0 8 0
pgrppl 48 25 0 9 1 0 1 1 0 8 0
ucredpl 96 64 0 54 1 0 1 1 0 8 0
zombiepl 144 9028 0 9027 2 1 1 1 0 8 0
processpl 1064 9068 0 9027 5 2 3 4 0 8 0
procpl 672 25883 0 25826 6 0 6 6 0 8 1
sockpl 480 123 0 101 4 1 3 4 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 63 0 0 8 0 8 8 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 304 0 0 18 0 18 18 0 8 0
bufpl 288 12201 0 5866 453 0 453 453 0 8 0
anonpl 24 2550349 0 2544154 56 12 44 46 0 186 1
amapchunkpl 152 280243 0 279741 29 4 25 25 0 158 2
amappl16 200 20027 0 19914 7 0 7 7 0 8 0
amappl15 192 2233 0 2225 1 0 1 1 0 8 0
amappl14 184 15 0 9 1 0 1 1 0 8 0
amappl13 176 103 0 99 2 1 1 1 0 8 0
amappl12 168 2168 0 2165 2 1 1 1 0 8 0
amappl11 160 2229 0 2216 1 0 1 1 0 8 0
amappl10 152 37 0 34 2 1 1 1 0 8 0
amappl9 144 434 0 432 1 0 1 1 0 8 0
amappl8 136 2756 0 2716 2 0 2 2 0 8 0
amappl7 128 2324 0 2311 1 0 1 1 0 8 0
amappl6 120 207 0 189 2 1 1 2 0 8 0
amappl5 112 5628 0 5615 1 0 1 1 0 8 0
amappl4 104 4573 0 4549 2 0 2 2 0 8 0
amappl3 96 2301 0 2287 1 0 1 1 0 8 0
amappl2 88 2646 0 2601 3 1 2 3 0 8 0
amappl1 80 174065 0 173531 19 5 14 18 0 8 0
amappl 88 116301 0 116117 6 0 6 6 0 92 0
uaddrrnd 24 9054 0 9028 1 0 1 1 0 8 0
vmmpekpl 168 66134 0 66108 2 0 2 2 0 8 0
vmmpepl 168 738235 0 736537 94 7 87 87 0 357 8
vmsppl 368 9053 0 9028 4 1 3 4 0 8 0
rwobjpl 56 213522 0 206525 102 2 100 101 0 8 0
pdppl 4096 18115 0 18056 97 32 65 75 0 8 6
pvpl 32 3931231 0 3921374 245 100 145 243 0 265 57
pmappl 248 9053 0 9028 4 2 2 3 0 8 0
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xsyscall() at Xsyscall+0x111
end of kernel
end trace frame: 0x7f7fffff53e0, count: 8
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xsyscall() at Xsyscall+0x111
end of kernel
end trace frame: 0x7f7fffff53e0, count: -7
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
HEAD commit: 63886b09705b free(3) wants stdlib.h
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=be89fe83d6c004fcb412
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=105202b2700000
dashboard link: https://syzkaller.appspot.com/bug?extid=be89fe83d6c004fcb412
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+be89fe...@syzkaller.appspotmail.com
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
369059 76226 0 0 0 0 syz-executor.5
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 62104 1029 0 0 0x4000000 1K syz-executor.6
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd61f8088510, count: 7
end of kernel
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: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
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: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd61f8088510, count: -8
end of kernel
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800021358fa0
rdi 0
rsi 0x1
rbx 0xffff800020ce9bff
rdx 0x3fd
rcx 0
rax 0x9f
r8 0x101010101010101
r9 0x8080808080808080
r10 0x215985550a8be1dc
r11 0xea736bc00f16cc6
r12 0xffff800020ce9a00
r13 0
r14 0
r15 0x1
rip 0xffffffff81d872c8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021358f90
r13 0
r14 0
r15 0x1
rip 0xffffffff81d872c8 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.6) pid=62104 stat=onproc
ddb{1}> show proc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=84, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff67f0,0xffff8000ffff6aa0
process=0xffff80002122b620 user=0xffff800021354000, vmspace=0xfffffd80721b4180
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
43218 419594 83868 0 2 0 syz-executor.1
PID TID PPID UID S FLAGS WAIT COMMAND
76226 369059 14994 0 7 0 syz-executor.5
76226 198023 14994 0 2 0x4000000 syz-executor.5
76226 496196 14994 0 2 0x4000000 syz-executor.5
52393 209813 57019 0 2 0 syz-executor.0
52393 62156 57019 0 3 0x4000080 fsleep syz-executor.0
52393 498288 57019 0 3 0x4000080 fsleep syz-executor.0
1029 27075 3195 0 2 0 syz-executor.6
1029 48091 3195 0 3 0x4000080 fsleep syz-executor.6
* 1029 62104 3195 0 7 0x4000000 syz-executor.6
4723 64655 65388 0 2 0 syz-executor.4
4723 243123 65388 0 3 0x4000080 fsleep syz-executor.4
4723 6316 65388 0 3 0x4000080 fsleep syz-executor.4
14994 373471 38553 0 3 0x82 nanoslp syz-executor.5
16234 377052 38553 0 2 0x2 syz-executor.2
65388 435822 38553 0 3 0x82 nanoslp syz-executor.4
3195 348549 38553 0 3 0x82 nanoslp syz-executor.6
27331 221622 38553 0 3 0x2 biowait syz-executor.3
91344 489935 38553 0 3 0x82 nanoslp syz-executor.7
83868 259122 38553 0 3 0x82 nanoslp syz-executor.1
57019 377366 38553 0 3 0x82 nanoslp syz-executor.0
38553 40320 86470 0 3 0x82 kqread syz-execprog
38553 151729 86470 0 3 0x4000082 nanoslp syz-execprog
38553 189618 86470 0 3 0x4000082 thrsleep syz-execprog
38553 25731 86470 0 3 0x4000082 thrsleep syz-execprog
38553 50697 86470 0 3 0x4000082 nanoslp syz-execprog
38553 312855 86470 0 3 0x4000082 thrsleep syz-execprog
38553 80044 86470 0 3 0x4000082 thrsleep syz-execprog
38553 86188 86470 0 3 0x4000082 thrsleep syz-execprog
38553 194840 86470 0 3 0x4000082 thrsleep syz-execprog
86470 166398 7858 0 3 0x10008a sigsusp ksh
7858 156878 94853 0 3 0x9a kqread sshd
67442 445098 1 0 3 0x100083 ttyin getty
94853 318325 1 0 3 0x88 kqread sshd
47504 45359 82132 73 3 0x1100090 kqread syslogd
82132 162892 1 0 3 0x100082 netio syslogd
69430 421735 1 0 3 0x100080 kqread resolvd
86907 106477 76763 77 3 0x100092 kqread dhcpleased
6697 327797 76763 77 3 0x100092 kqread dhcpleased
76763 450020 1 0 3 0x80 kqread dhcpleased
47281 218234 0 0 3 0x14200 bored smr
7802 408351 0 0 2 0x14200 zerothread
36801 14140 0 0 3 0x14200 aiodoned aiodoned
18190 261786 0 0 3 0x14200 syncer update
46120 318061 0 0 3 0x14200 cleaner cleaner
87775 149238 0 0 3 0x14200 reaper reaper
16618 211885 0 0 3 0x14200 pgdaemon pagedaemon
42859 384338 0 0 3 0x14200 bored viomb
49299 488667 0 0 3 0x40014200 acpi0 acpi0
92578 116041 0 0 3 0x40014200 idle1
55404 259317 0 0 3 0x14200 bored softnet
44296 109798 0 0 3 0x14200 bored systqmp
44801 324741 0 0 3 0x14200 bored systq
75526 214827 0 0 3 0x40014200 bored softclock
41655 98676 0 0 3 0x40014200 idle0
1 259523 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 1029 (syz-executor.6) thread 0xffff8000ffff7510 (62104)
ddb{1}> show all locks
exclusive rwlock amaplk r = 0 (0xfffffd80735cec20)
#0 witness_lock+0x44d
#1 uvm_map_lock_entry+0x36 sys/uvm/uvm_map.c:508
#2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1655
#3 uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
#4 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
shared rwlock vmmaplk r = 0 (0xfffffd80721b4198)
#1 uvm_map_lock_entry+0x36 sys/uvm/uvm_map.c:508
#2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1655
#3 uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
#4 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80717a75f8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c508f80)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10167 6406K 6419K 78643K 11257 0
Type InUse MemUse HighUse Limit Requests Type Lim
pcb 13 8K 8K 78643K 13 0
rtable 238 6K 7K 78643K 348 0
ifaddr 81 16K 16K 78643K 82 0
counters 56 35K 35K 78643K 56 0
ioctlops 0 0K 2K 78643K 33 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1166 73K 73K 78643K 1179 0
log 0 0K 0K 78643K 5 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 25K 78643K 8656 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 15 53K 85K 78643K 8789 0
ACPI 1697 195K 286K 78643K 12548 0
proc 55 74K 111K 78643K 450 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 99 6K 6K 78643K 99 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 25 122K 122K 78643K 25 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 2K 78643K 608 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 7 26K 26K 78643K 7 0
UVM amap 235 74K 75K 78643K 124830 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 131 4K 4K 78643K 131 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 11 0K 2K 78643K 27 0
crypto data 1 1K 1K 78643K 1 0
temp 52 4687K 4751K 78643K 21335 0
kqueue 12 18K 18K 78643K 25 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 33 0 30 1 0 1 1 0 8 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
rtentry 112 111 0 1 4 0 4 4 0 8 0
unpcb 136 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 2 0 1 0 8 0
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 18 0 0 1 0 1 1 0 8 0
inpcb 304 57 0 51 1 0 1 1 0 8 0
nd6 48 24 0 0 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 0 29 0 29 29 0 8 0
art_table 32 454 0 0 4 0 4 4 0 8 0
art_node 16 110 0 10 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 10129 0 8700 90 0 90 90 0 8 0
ffsino 272 10129 0 8700 96 0 96 96 0 8 0
nchpl 144 19028 0 17369 62 0 62 62 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 40306 0 40305 3 2 1 2 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
percpumem 16 40 0 0 1 0 1 1 0 8 0
scxspl 216 57436 0 57435 21 20 1 8 0 8 0
plimitpl 152 23 0 9 1 0 1 1 0 8 0
sigapl 424 9068 0 9027 6 1 5 6 0 8 0
futexpl 64 44661 0 44656 1 0 1 1 0 8 0
knotepl 120 102 0 0 4 0 4 4 0 8 0
kqueuepl 216 21 0 13 1 0 1 1 0 8 0
pipepl 336 127 0 99 4 1 3 3 0 8 0
fdescpl 496 9054 0 9028 6 2 4 5 0 8 0
filepl 152 10048 0 9920 6 0 6 6 0 8 1
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 25 0 9 1 0 1 1 0 8 0
pgrppl 48 25 0 9 1 0 1 1 0 8 0
ucredpl 96 64 0 54 1 0 1 1 0 8 0
zombiepl 144 9028 0 9027 2 1 1 1 0 8 0
processpl 1064 9068 0 9027 5 2 3 4 0 8 0
procpl 672 25883 0 25826 6 0 6 6 0 8 1
sockpl 480 123 0 101 4 1 3 4 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 63 0 0 8 0 8 8 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 304 0 0 18 0 18 18 0 8 0
bufpl 288 12201 0 5866 453 0 453 453 0 8 0
anonpl 24 2550349 0 2544154 56 12 44 46 0 186 1
amapchunkpl 152 280243 0 279741 29 4 25 25 0 158 2
amappl16 200 20027 0 19914 7 0 7 7 0 8 0
amappl15 192 2233 0 2225 1 0 1 1 0 8 0
amappl14 184 15 0 9 1 0 1 1 0 8 0
amappl13 176 103 0 99 2 1 1 1 0 8 0
amappl12 168 2168 0 2165 2 1 1 1 0 8 0
amappl11 160 2229 0 2216 1 0 1 1 0 8 0
amappl10 152 37 0 34 2 1 1 1 0 8 0
amappl9 144 434 0 432 1 0 1 1 0 8 0
amappl8 136 2756 0 2716 2 0 2 2 0 8 0
amappl7 128 2324 0 2311 1 0 1 1 0 8 0
amappl6 120 207 0 189 2 1 1 2 0 8 0
amappl5 112 5628 0 5615 1 0 1 1 0 8 0
amappl4 104 4573 0 4549 2 0 2 2 0 8 0
amappl3 96 2301 0 2287 1 0 1 1 0 8 0
amappl2 88 2646 0 2601 3 1 2 3 0 8 0
amappl1 80 174065 0 173531 19 5 14 18 0 8 0
amappl 88 116301 0 116117 6 0 6 6 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 72 130 0 0 3 0 3 3 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
uaddrrnd 24 9054 0 9028 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 9054 0 9028 1 0 1 1 0 8 0
vmmpekpl 168 66134 0 66108 2 0 2 2 0 8 0
vmmpepl 168 738235 0 736537 94 7 87 87 0 357 8
vmsppl 368 9053 0 9028 4 1 3 4 0 8 0
rwobjpl 56 213522 0 206525 102 2 100 101 0 8 0
pdppl 4096 18115 0 18056 97 32 65 75 0 8 6
pvpl 32 3931231 0 3921374 245 100 145 243 0 265 57
pmappl 248 9053 0 9028 4 2 2 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 812 0 38 23 0 23 23 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff8000213418a0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xsyscall() at Xsyscall+0x111
end of kernel
end trace frame: 0x7f7fffff53e0, count: 8
ddb{0}> trace
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff8000213418a0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
x86_ipi_db(ffffffff82900ff0) at x86_ipi_db+0x1a 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+0x23
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xsyscall() at Xsyscall+0x111
end of kernel
end trace frame: 0x7f7fffff53e0, count: -7
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd61f8088510, count: 7
end of kernel
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire_locked(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_fault_unwire(fffffd80721b4180,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601
sys_sysctl(ffff8000ffff7510,ffff800021359218,ffff800021359270) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254
syscall(ffff8000213592e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000213592e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd61f8088510, count: -8
end of kernel
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