panic: free: size too small 10 <= 4096 / 2 (ADDR) type devbuf
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syzbot
Jun 11, 2020, 12:51:14 AM6/11/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 470a8ce0 Add a "framework" for digital audio interfaces.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10e437fe100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=eea393955f601ecb3e62
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+eea393...@syzkaller.appspotmail.com
panic: free: size too small 10 <= 4096 / 2 (0xffff800000aa2000) type devbuf
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
213047 84897 0 0 0 1 syz-executor.1
*511344 84897 0 0 0x4000000 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824204f4) at panic+0x15c sys/kern/subr_prf.c:207
free(ffff800000aa2000,2,a) at free+0x54c
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
wskbd_displayioctl(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
wskbd_do_ioctl_sc(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
VOP_IOCTL(fffffd806e291008,80045710,ffff800021fdce30,2,fffffd807f7bf7e0,ffff800020e02780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8064e25ac0,80045710,ffff800021fdce30,ffff800020e02780) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800020e02780,ffff800021fdcf48,ffff800021fdcf90) at sys_ioctl+0x4a5
syscall(ffff800021fdd010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021fdd010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfd33c701a80, count: 3
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
free: size too small 10 <= 4096 / 2 (0xffff800000aa2000) type devbuf
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824204f4) at panic+0x15c sys/kern/subr_prf.c:207
free(ffff800000aa2000,2,a) at free+0x54c
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
wskbd_displayioctl(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
wskbd_do_ioctl_sc(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
VOP_IOCTL(fffffd806e291008,80045710,ffff800021fdce30,2,fffffd807f7bf7e0,ffff800020e02780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8064e25ac0,80045710,ffff800021fdce30,ffff800020e02780) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800020e02780,ffff800021fdcf48,ffff800021fdcf90) at sys_ioctl+0x4a5
syscall(ffff800021fdd010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021fdd010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfd33c701a80, count: -12
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800021fdc8b0
rbx 0xffff800021fdc960
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff82207b4f kprintf+0x16f
r9 0x1
r10 0x2
r11 0x7ad5501031ae8096
r12 0x3000000008
r13 0xffff800021fdc8c0
r14 0x100
r15 0x1
rip 0xffffffff813fb6a8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021fdc8a0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=511344 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020e03890,0xffff800020e022b0
process=0xffff800020e183f8 user=0xffff800021fd8000, vmspace=0xfffffd8064ad12f0
estcpu=36, cpticks=2, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84897 213047 22675 0 7 0 syz-executor.1
84897 11135 22675 0 2 0x4000000 syz-executor.1
*84897 511344 22675 0 7 0x4000000 syz-executor.1
84897 13458 22675 0 2 0x4000000 syz-executor.1
32640 302595 13965 0 3 0x80 nanosleep syz-executor.0
32640 253648 13965 0 3 0x4000080 lockf syz-executor.0
32640 401367 13965 0 3 0x4000080 lockf syz-executor.0
32640 72294 13965 0 3 0x4000080 fsleep syz-executor.0
11332 113595 0 0 3 0x14280 nfsidl nfsio
58861 250743 0 0 3 0x14280 nfsidl nfsio
84308 157192 0 0 3 0x14280 nfsidl nfsio
99960 78835 0 0 3 0x14280 nfsidl nfsio
99443 124923 0 0 3 0x14280 nfsidl nfsio
33819 425852 0 0 3 0x14280 nfsidl nfsio
30540 343473 0 0 3 0x14280 nfsidl nfsio
3911 245545 0 0 3 0x14280 nfsidl nfsio
38801 501519 0 0 3 0x14280 nfsidl nfsio
77755 508032 0 0 3 0x14280 nfsidl nfsio
81023 270877 0 0 3 0x14280 nfsidl nfsio
6320 177636 0 0 3 0x14280 nfsidl nfsio
12728 393499 0 0 3 0x14280 nfsidl nfsio
46622 269223 0 0 3 0x14280 nfsidl nfsio
57565 508522 0 0 3 0x14280 nfsidl nfsio
7363 352288 0 0 3 0x14280 nfsidl nfsio
98600 278531 0 0 3 0x14280 nfsidl nfsio
34311 465835 0 0 3 0x14280 nfsidl nfsio
95866 384840 0 0 3 0x14280 nfsidl nfsio
38900 8247 0 0 3 0x14280 nfsidl nfsio
22675 282698 15828 0 3 0x82 nanosleep syz-executor.1
74385 61649 0 0 3 0x14200 acct acct
73632 304775 0 0 3 0x14200 bored sosplice
13965 315637 15828 0 3 0x82 nanosleep syz-executor.0
15828 234922 69328 0 3 0x82 kqread syz-fuzzer
15828 260258 69328 0 3 0x4000082 nanosleep syz-fuzzer
15828 137654 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 155558 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 148656 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 219423 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 33993 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 505709 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 64660 69328 0 3 0x4000082 nanosleep syz-fuzzer
15828 288088 69328 0 3 0x4000082 thrsleep syz-fuzzer
69328 516349 94322 0 3 0x10008a pause ksh
94322 365597 85368 0 3 0x92 select sshd
6172 352687 1 0 3 0x100083 ttyin getty
85368 373792 1 0 3 0x80 select sshd
17579 185387 86384 74 3 0x100092 bpf pflogd
86384 19990 1 0 3 0x80 netio pflogd
29879 360895 95439 73 3 0x100090 kqread syslogd
95439 44544 1 0 3 0x100082 netio syslogd
5083 155249 1 77 3 0x100090 poll dhclient
58488 73636 1 0 3 0x80 poll dhclient
4235 469001 0 0 3 0x14200 bored smr
26383 187595 0 0 3 0x14200 pgzero zerothread
82835 63788 0 0 3 0x14200 aiodoned aiodoned
69254 249746 0 0 3 0x14200 syncer update
78872 357705 0 0 3 0x14200 cleaner cleaner
98706 289910 0 0 3 0x14200 reaper reaper
87028 32437 0 0 3 0x14200 pgdaemon pagedaemon
95688 456426 0 0 3 0x14200 bored crynlk
85980 106819 0 0 3 0x14200 bored crypto
87261 404439 0 0 3 0x40014200 acpi0 acpi0
50527 236407 0 0 3 0x40014200 idle1
4573 21100 0 0 3 0x14200 bored softnet
99091 438162 0 0 3 0x14200 bored systqmp
93433 448820 0 0 3 0x14200 bored systq
71868 96291 0 0 3 0x40014200 bored softclock
37344 456394 0 0 3 0x40014200 idle0
1 517912 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0 (0xffffffff826f5f70)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 free+0x70 sys/kern/kern_malloc.c:394
#4 wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
#4 wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
#5 wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
#6 wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
#7 wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
#7 wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
#8 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
#9 vn_ioctl+0xba sys/kern/vfs_vnops.c:531
#10 sys_ioctl+0x4a5
#11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#12 Xsyscall+0x128
Process 84897 (syz-executor.1) thread 0xffff800020e03890 (11135)
exclusive rwlock fdlock r = 0 (0xfffffd807583aa18)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 dopipe+0x25d sys/kern/sys_pipe.c:184
#2 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#2 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#3 Xsyscall+0x128
Process 84897 (syz-executor.1) thread 0xffff800020e02780 (511344)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b0160)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 vn_ioctl+0x40 sys/kern/vfs_vnops.c:514
#2 sys_ioctl+0x4a5
#3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#4 Xsyscall+0x128
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0 (0xffffffff826f5f70)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 free+0x70 sys/kern/kern_malloc.c:394
#4 wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
#4 wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
#5 wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
#6 wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
#7 wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
#7 wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
#8 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
#9 vn_ioctl+0xba sys/kern/vfs_vnops.c:531
#10 sys_ioctl+0x4a5
#11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#12 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9522 6430K 6876K 78643K 11643 0
pcb 13 8K 8K 78643K 135 0
rtable 125 9K 10K 78643K 534 0
ifaddr 100 21K 21K 78643K 217 0
sysctl 2 0K 0K 78643K 2 0
counters 43 33K 34K 78643K 79 0
ioctlops 0 0K 4K 78643K 1582 0
iov 0 0K 16K 78643K 76 0
mount 1 1K 1K 78643K 1 0
vnodes 1217 76K 77K 78643K 1573 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 15 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 175 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 732 0
sigio 0 0K 0K 78643K 3 0
proc 63 63K 95K 78643K 546 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 25 0
in_multi 85 4K 4K 78643K 142 0
ether_multi 1 0K 0K 78643K 14 0
mrt 0 0K 0K 78643K 20 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 256 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 151 122K 122K 78643K 3446 0
UVM aobj 48 2K 2K 78643K 48 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 101 0
NDP 12 0K 0K 78643K 38 0
temp 125 3856K 3936K 78643K 22063 0
kqueue 3 4K 18K 78643K 56 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 12 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 62 0 60 1 0 1 1 0 8 0
rtentry 112 84 0 43 2 0 2 2 0 8 0
unpcb 120 333 0 323 1 0 1 1 0 8 0
syncache 264 12 0 12 3 3 0 1 0 8 0
tcpqe 32 153 0 153 3 3 0 1 0 8 0
tcpcb 544 1371 0 1367 4 3 1 2 0 8 0
inpcb 280 1816 0 1807 4 2 2 2 0 8 1
rttmr 72 7 0 7 2 2 0 1 0 8 0
nd6 48 13 0 8 1 0 1 1 0 8 0
pkpcb 40 3 0 3 2 2 0 1 0 8 0
ppxss 1128 2 0 2 2 2 0 1 0 8 0
pffrag 232 7 0 3 2 1 1 1 0 482 0
pffrnode 88 6 0 3 2 1 1 1 0 8 0
pffrent 40 61 0 57 3 2 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 30 0 20 2 1 1 2 0 8 0
pftag 88 2 0 2 1 1 0 1 0 8 0
pfstitem 24 78 0 28 1 0 1 1 0 8 0
pfstkey 112 78 0 28 2 0 2 2 0 8 0
pfstate 328 78 0 28 5 0 5 5 0 8 0
pfrule 1360 37 0 24 3 1 2 2 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 391 0 194 14 1 13 13 0 8 0
art_table 32 393 0 194 2 0 2 2 0 8 0
art_node 16 81 0 45 1 0 1 1 0 8 0
sysvmsgpl 40 19 0 14 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 169 0 159 1 0 1 1 0 8 0
shmpl 112 46 0 0 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2373 0 970 89 0 89 89 0 8 0
ffsino 272 2373 0 970 95 1 94 95 0 8 0
nchpl 144 3537 0 1953 60 0 60 60 0 8 0
uvmvnodes 72 2667 0 0 49 0 49 49 0 8 0
vnodes 208 2667 0 0 141 0 141 141 0 8 0
namei 1024 9827 0 9827 3 2 1 1 0 8 1
percpumem 16 50 0 18 1 0 1 1 0 8 0
vcpupl 1984 9 0 0 2 0 2 2 0 8 0
vmpool 560 13 0 4 1 0 1 1 0 8 0
pfiaddrpl 120 12 0 6 1 0 1 1 0 8 0
scxspl 192 10967 0 10967 12 11 1 7 0 8 1
plimitpl 152 58 0 50 1 0 1 1 0 8 0
sigapl 424 966 0 912 7 0 7 7 0 8 0
futexpl 56 11184 0 11183 2 1 1 1 0 8 0
knotepl 112 156 0 137 2 1 1 2 0 8 0
kqueuepl 144 124 0 122 1 0 1 1 0 8 0
pipelkpl 48 222 0 208 1 0 1 1 0 8 0
pipepl 120 444 0 417 2 1 1 2 0 8 0
fdescpl 496 929 0 912 3 0 3 3 0 8 0
filepl 152 6002 0 5890 8 3 5 6 0 8 0
lockfpl 104 206 0 202 1 0 1 1 0 8 0
lockfspl 48 73 0 71 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 23 0 12 1 0 1 1 0 8 0
ucredpl 96 527 0 518 1 0 1 1 0 8 0
zombiepl 144 924 0 924 2 1 1 1 0 8 1
processpl 984 966 0 912 7 0 7 7 0 8 0
procpl 624 2597 0 2528 7 1 6 6 0 8 0
srpgc 64 2 0 2 1 1 0 1 0 8 0
sosppl 128 14 0 14 2 2 0 1 0 8 0
sockpl 400 2221 0 2202 10 7 3 4 0 8 1
mcl64k 65536 12 0 0 2 0 2 2 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 11 0 0 2 0 2 2 0 8 0
mcl9k 9216 5 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 14 0 0 2 0 2 2 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 165 0 0 20 0 20 20 0 8 0
mtagpl 80 35 0 0 1 0 1 1 0 8 0
mbufpl 256 549 0 0 34 0 34 34 0 8 0
bufpl 280 4940 0 137 344 0 344 344 0 8 0
anonpl 16 99601 0 83906 85 21 64 75 0 124 0
amapchunkpl 152 6046 0 5810 27 17 10 19 0 158 0
amappl16 192 4313 0 3464 56 13 43 54 0 8 0
amappl15 184 4 0 2 1 0 1 1 0 8 0
amappl14 176 80 0 76 1 0 1 1 0 8 0
amappl13 168 36 0 33 1 0 1 1 0 8 0
amappl12 160 74 0 70 1 0 1 1 0 8 0
amappl11 152 412 0 395 1 0 1 1 0 8 0
amappl10 144 296 0 289 1 0 1 1 0 8 0
amappl9 136 384 0 383 1 0 1 1 0 8 0
amappl8 128 391 0 354 3 1 2 2 0 8 0
amappl7 120 404 0 388 1 0 1 1 0 8 0
amappl6 112 375 0 371 1 0 1 1 0 8 0
amappl5 104 832 0 815 1 0 1 1 0 8 0
amappl4 96 507 0 475 1 0 1 1 0 8 0
amappl3 88 125 0 120 1 0 1 1 0 8 0
amappl2 80 6495 0 6414 2 0 2 2 0 8 0
amappl1 72 29949 0 29493 23 13 10 18 0 8 0
amappl 80 2864 0 2809 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 47 0 0 1 0 1 1 0 8 0
uaddrrnd 24 942 0 916 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 942 0 916 1 0 1 1 0 8 0
vmmpekpl 168 11276 0 11235 3 0 3 3 0 8 0
vmmpepl 168 119662 0 117524 128 34 94 119 0 357 0
vmsppl 368 941 0 916 3 0 3 3 0 8 0
pdppl 4096 1891 0 1841 7 0 7 7 0 8 0
pvpl 32 298185 0 278598 212 53 159 181 0 265 0
pmappl 232 941 0 916 3 1 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 302 0 18 9 0 9 9 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824204f4) at panic+0x15c sys/kern/subr_prf.c:207
free(ffff800000aa2000,2,a) at free+0x54c
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
wskbd_displayioctl(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
wskbd_do_ioctl_sc(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
VOP_IOCTL(fffffd806e291008,80045710,ffff800021fdce30,2,fffffd807f7bf7e0,ffff800020e02780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8064e25ac0,80045710,ffff800021fdce30,ffff800020e02780) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800020e02780,ffff800021fdcf48,ffff800021fdcf90) at sys_ioctl+0x4a5
syscall(ffff800021fdd010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021fdd010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfd33c701a80, count: -12
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffdf580, count: 12
ddb{1}> trace
x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffdf580, count: -3
---
This bug 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 bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 470a8ce0 Add a "framework" for digital audio interfaces.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10e437fe100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=eea393955f601ecb3e62
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+eea393...@syzkaller.appspotmail.com
panic: free: size too small 10 <= 4096 / 2 (0xffff800000aa2000) type devbuf
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
213047 84897 0 0 0 1 syz-executor.1
*511344 84897 0 0 0x4000000 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824204f4) at panic+0x15c sys/kern/subr_prf.c:207
free(ffff800000aa2000,2,a) at free+0x54c
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
wskbd_displayioctl(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
wskbd_do_ioctl_sc(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
VOP_IOCTL(fffffd806e291008,80045710,ffff800021fdce30,2,fffffd807f7bf7e0,ffff800020e02780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8064e25ac0,80045710,ffff800021fdce30,ffff800020e02780) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800020e02780,ffff800021fdcf48,ffff800021fdcf90) at sys_ioctl+0x4a5
syscall(ffff800021fdd010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021fdd010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfd33c701a80, count: 3
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
free: size too small 10 <= 4096 / 2 (0xffff800000aa2000) type devbuf
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824204f4) at panic+0x15c sys/kern/subr_prf.c:207
free(ffff800000aa2000,2,a) at free+0x54c
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
wskbd_displayioctl(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
wskbd_do_ioctl_sc(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
VOP_IOCTL(fffffd806e291008,80045710,ffff800021fdce30,2,fffffd807f7bf7e0,ffff800020e02780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8064e25ac0,80045710,ffff800021fdce30,ffff800020e02780) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800020e02780,ffff800021fdcf48,ffff800021fdcf90) at sys_ioctl+0x4a5
syscall(ffff800021fdd010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021fdd010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfd33c701a80, count: -12
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800021fdc8b0
rbx 0xffff800021fdc960
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff82207b4f kprintf+0x16f
r9 0x1
r10 0x2
r11 0x7ad5501031ae8096
r12 0x3000000008
r13 0xffff800021fdc8c0
r14 0x100
r15 0x1
rip 0xffffffff813fb6a8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021fdc8a0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=511344 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020e03890,0xffff800020e022b0
process=0xffff800020e183f8 user=0xffff800021fd8000, vmspace=0xfffffd8064ad12f0
estcpu=36, cpticks=2, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84897 213047 22675 0 7 0 syz-executor.1
84897 11135 22675 0 2 0x4000000 syz-executor.1
*84897 511344 22675 0 7 0x4000000 syz-executor.1
84897 13458 22675 0 2 0x4000000 syz-executor.1
32640 302595 13965 0 3 0x80 nanosleep syz-executor.0
32640 253648 13965 0 3 0x4000080 lockf syz-executor.0
32640 401367 13965 0 3 0x4000080 lockf syz-executor.0
32640 72294 13965 0 3 0x4000080 fsleep syz-executor.0
11332 113595 0 0 3 0x14280 nfsidl nfsio
58861 250743 0 0 3 0x14280 nfsidl nfsio
84308 157192 0 0 3 0x14280 nfsidl nfsio
99960 78835 0 0 3 0x14280 nfsidl nfsio
99443 124923 0 0 3 0x14280 nfsidl nfsio
33819 425852 0 0 3 0x14280 nfsidl nfsio
30540 343473 0 0 3 0x14280 nfsidl nfsio
3911 245545 0 0 3 0x14280 nfsidl nfsio
38801 501519 0 0 3 0x14280 nfsidl nfsio
77755 508032 0 0 3 0x14280 nfsidl nfsio
81023 270877 0 0 3 0x14280 nfsidl nfsio
6320 177636 0 0 3 0x14280 nfsidl nfsio
12728 393499 0 0 3 0x14280 nfsidl nfsio
46622 269223 0 0 3 0x14280 nfsidl nfsio
57565 508522 0 0 3 0x14280 nfsidl nfsio
7363 352288 0 0 3 0x14280 nfsidl nfsio
98600 278531 0 0 3 0x14280 nfsidl nfsio
34311 465835 0 0 3 0x14280 nfsidl nfsio
95866 384840 0 0 3 0x14280 nfsidl nfsio
38900 8247 0 0 3 0x14280 nfsidl nfsio
22675 282698 15828 0 3 0x82 nanosleep syz-executor.1
74385 61649 0 0 3 0x14200 acct acct
73632 304775 0 0 3 0x14200 bored sosplice
13965 315637 15828 0 3 0x82 nanosleep syz-executor.0
15828 234922 69328 0 3 0x82 kqread syz-fuzzer
15828 260258 69328 0 3 0x4000082 nanosleep syz-fuzzer
15828 137654 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 155558 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 148656 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 219423 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 33993 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 505709 69328 0 3 0x4000082 thrsleep syz-fuzzer
15828 64660 69328 0 3 0x4000082 nanosleep syz-fuzzer
15828 288088 69328 0 3 0x4000082 thrsleep syz-fuzzer
69328 516349 94322 0 3 0x10008a pause ksh
94322 365597 85368 0 3 0x92 select sshd
6172 352687 1 0 3 0x100083 ttyin getty
85368 373792 1 0 3 0x80 select sshd
17579 185387 86384 74 3 0x100092 bpf pflogd
86384 19990 1 0 3 0x80 netio pflogd
29879 360895 95439 73 3 0x100090 kqread syslogd
95439 44544 1 0 3 0x100082 netio syslogd
5083 155249 1 77 3 0x100090 poll dhclient
58488 73636 1 0 3 0x80 poll dhclient
4235 469001 0 0 3 0x14200 bored smr
26383 187595 0 0 3 0x14200 pgzero zerothread
82835 63788 0 0 3 0x14200 aiodoned aiodoned
69254 249746 0 0 3 0x14200 syncer update
78872 357705 0 0 3 0x14200 cleaner cleaner
98706 289910 0 0 3 0x14200 reaper reaper
87028 32437 0 0 3 0x14200 pgdaemon pagedaemon
95688 456426 0 0 3 0x14200 bored crynlk
85980 106819 0 0 3 0x14200 bored crypto
87261 404439 0 0 3 0x40014200 acpi0 acpi0
50527 236407 0 0 3 0x40014200 idle1
4573 21100 0 0 3 0x14200 bored softnet
99091 438162 0 0 3 0x14200 bored systqmp
93433 448820 0 0 3 0x14200 bored systq
71868 96291 0 0 3 0x40014200 bored softclock
37344 456394 0 0 3 0x40014200 idle0
1 517912 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0 (0xffffffff826f5f70)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 free+0x70 sys/kern/kern_malloc.c:394
#4 wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
#4 wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
#5 wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
#6 wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
#7 wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
#7 wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
#8 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
#9 vn_ioctl+0xba sys/kern/vfs_vnops.c:531
#10 sys_ioctl+0x4a5
#11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#12 Xsyscall+0x128
Process 84897 (syz-executor.1) thread 0xffff800020e03890 (11135)
exclusive rwlock fdlock r = 0 (0xfffffd807583aa18)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 dopipe+0x25d sys/kern/sys_pipe.c:184
#2 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#2 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#3 Xsyscall+0x128
Process 84897 (syz-executor.1) thread 0xffff800020e02780 (511344)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b0160)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 vn_ioctl+0x40 sys/kern/vfs_vnops.c:514
#2 sys_ioctl+0x4a5
#3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#4 Xsyscall+0x128
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0 (0xffffffff826f5f70)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 free+0x70 sys/kern/kern_malloc.c:394
#4 wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
#4 wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
#5 wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
#6 wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
#7 wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
#7 wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
#8 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
#9 vn_ioctl+0xba sys/kern/vfs_vnops.c:531
#10 sys_ioctl+0x4a5
#11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#12 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9522 6430K 6876K 78643K 11643 0
pcb 13 8K 8K 78643K 135 0
rtable 125 9K 10K 78643K 534 0
ifaddr 100 21K 21K 78643K 217 0
sysctl 2 0K 0K 78643K 2 0
counters 43 33K 34K 78643K 79 0
ioctlops 0 0K 4K 78643K 1582 0
iov 0 0K 16K 78643K 76 0
mount 1 1K 1K 78643K 1 0
vnodes 1217 76K 77K 78643K 1573 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 15 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 175 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 732 0
sigio 0 0K 0K 78643K 3 0
proc 63 63K 95K 78643K 546 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 25 0
in_multi 85 4K 4K 78643K 142 0
ether_multi 1 0K 0K 78643K 14 0
mrt 0 0K 0K 78643K 20 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 256 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 151 122K 122K 78643K 3446 0
UVM aobj 48 2K 2K 78643K 48 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 101 0
NDP 12 0K 0K 78643K 38 0
temp 125 3856K 3936K 78643K 22063 0
kqueue 3 4K 18K 78643K 56 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 12 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 62 0 60 1 0 1 1 0 8 0
rtentry 112 84 0 43 2 0 2 2 0 8 0
unpcb 120 333 0 323 1 0 1 1 0 8 0
syncache 264 12 0 12 3 3 0 1 0 8 0
tcpqe 32 153 0 153 3 3 0 1 0 8 0
tcpcb 544 1371 0 1367 4 3 1 2 0 8 0
inpcb 280 1816 0 1807 4 2 2 2 0 8 1
rttmr 72 7 0 7 2 2 0 1 0 8 0
nd6 48 13 0 8 1 0 1 1 0 8 0
pkpcb 40 3 0 3 2 2 0 1 0 8 0
ppxss 1128 2 0 2 2 2 0 1 0 8 0
pffrag 232 7 0 3 2 1 1 1 0 482 0
pffrnode 88 6 0 3 2 1 1 1 0 8 0
pffrent 40 61 0 57 3 2 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 30 0 20 2 1 1 2 0 8 0
pftag 88 2 0 2 1 1 0 1 0 8 0
pfstitem 24 78 0 28 1 0 1 1 0 8 0
pfstkey 112 78 0 28 2 0 2 2 0 8 0
pfstate 328 78 0 28 5 0 5 5 0 8 0
pfrule 1360 37 0 24 3 1 2 2 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 391 0 194 14 1 13 13 0 8 0
art_table 32 393 0 194 2 0 2 2 0 8 0
art_node 16 81 0 45 1 0 1 1 0 8 0
sysvmsgpl 40 19 0 14 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 169 0 159 1 0 1 1 0 8 0
shmpl 112 46 0 0 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2373 0 970 89 0 89 89 0 8 0
ffsino 272 2373 0 970 95 1 94 95 0 8 0
nchpl 144 3537 0 1953 60 0 60 60 0 8 0
uvmvnodes 72 2667 0 0 49 0 49 49 0 8 0
vnodes 208 2667 0 0 141 0 141 141 0 8 0
namei 1024 9827 0 9827 3 2 1 1 0 8 1
percpumem 16 50 0 18 1 0 1 1 0 8 0
vcpupl 1984 9 0 0 2 0 2 2 0 8 0
vmpool 560 13 0 4 1 0 1 1 0 8 0
pfiaddrpl 120 12 0 6 1 0 1 1 0 8 0
scxspl 192 10967 0 10967 12 11 1 7 0 8 1
plimitpl 152 58 0 50 1 0 1 1 0 8 0
sigapl 424 966 0 912 7 0 7 7 0 8 0
futexpl 56 11184 0 11183 2 1 1 1 0 8 0
knotepl 112 156 0 137 2 1 1 2 0 8 0
kqueuepl 144 124 0 122 1 0 1 1 0 8 0
pipelkpl 48 222 0 208 1 0 1 1 0 8 0
pipepl 120 444 0 417 2 1 1 2 0 8 0
fdescpl 496 929 0 912 3 0 3 3 0 8 0
filepl 152 6002 0 5890 8 3 5 6 0 8 0
lockfpl 104 206 0 202 1 0 1 1 0 8 0
lockfspl 48 73 0 71 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 23 0 12 1 0 1 1 0 8 0
ucredpl 96 527 0 518 1 0 1 1 0 8 0
zombiepl 144 924 0 924 2 1 1 1 0 8 1
processpl 984 966 0 912 7 0 7 7 0 8 0
procpl 624 2597 0 2528 7 1 6 6 0 8 0
srpgc 64 2 0 2 1 1 0 1 0 8 0
sosppl 128 14 0 14 2 2 0 1 0 8 0
sockpl 400 2221 0 2202 10 7 3 4 0 8 1
mcl64k 65536 12 0 0 2 0 2 2 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 11 0 0 2 0 2 2 0 8 0
mcl9k 9216 5 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 14 0 0 2 0 2 2 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 165 0 0 20 0 20 20 0 8 0
mtagpl 80 35 0 0 1 0 1 1 0 8 0
mbufpl 256 549 0 0 34 0 34 34 0 8 0
bufpl 280 4940 0 137 344 0 344 344 0 8 0
anonpl 16 99601 0 83906 85 21 64 75 0 124 0
amapchunkpl 152 6046 0 5810 27 17 10 19 0 158 0
amappl16 192 4313 0 3464 56 13 43 54 0 8 0
amappl15 184 4 0 2 1 0 1 1 0 8 0
amappl14 176 80 0 76 1 0 1 1 0 8 0
amappl13 168 36 0 33 1 0 1 1 0 8 0
amappl12 160 74 0 70 1 0 1 1 0 8 0
amappl11 152 412 0 395 1 0 1 1 0 8 0
amappl10 144 296 0 289 1 0 1 1 0 8 0
amappl9 136 384 0 383 1 0 1 1 0 8 0
amappl8 128 391 0 354 3 1 2 2 0 8 0
amappl7 120 404 0 388 1 0 1 1 0 8 0
amappl6 112 375 0 371 1 0 1 1 0 8 0
amappl5 104 832 0 815 1 0 1 1 0 8 0
amappl4 96 507 0 475 1 0 1 1 0 8 0
amappl3 88 125 0 120 1 0 1 1 0 8 0
amappl2 80 6495 0 6414 2 0 2 2 0 8 0
amappl1 72 29949 0 29493 23 13 10 18 0 8 0
amappl 80 2864 0 2809 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 47 0 0 1 0 1 1 0 8 0
uaddrrnd 24 942 0 916 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 942 0 916 1 0 1 1 0 8 0
vmmpekpl 168 11276 0 11235 3 0 3 3 0 8 0
vmmpepl 168 119662 0 117524 128 34 94 119 0 357 0
vmsppl 368 941 0 916 3 0 3 3 0 8 0
pdppl 4096 1891 0 1841 7 0 7 7 0 8 0
pvpl 32 298185 0 278598 212 53 159 181 0 265 0
pmappl 232 941 0 916 3 1 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 302 0 18 9 0 9 9 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824204f4) at panic+0x15c sys/kern/subr_prf.c:207
free(ffff800000aa2000,2,a) at free+0x54c
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 wskbd_init_keymap sys/dev/wscons/wskbdutil.c:385 [inline]
wskbd_load_keymap(ffff80000007ec70,200,ffff800000657528,ffff800000657524) at wskbd_load_keymap+0x3e2 sys/dev/wscons/wskbdutil.c:440
wskbd_displayioctl(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_displayioctl+0xacb sys/dev/wscons/wskbd.c:1150
wskbd_do_ioctl_sc(ffff800000657400,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbd_do_ioctl_sc+0x17c sys/dev/wscons/wskbd.c:986
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c wskbd_do_ioctl sys/dev/wscons/wskbd.c:940 [inline]
wskbdioctl(4300,80045710,ffff800021fdce30,2,ffff800020e02780) at wskbdioctl+0x7c sys/dev/wscons/wskbd.c:928
VOP_IOCTL(fffffd806e291008,80045710,ffff800021fdce30,2,fffffd807f7bf7e0,ffff800020e02780) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8064e25ac0,80045710,ffff800021fdce30,ffff800020e02780) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800020e02780,ffff800021fdcf48,ffff800021fdcf90) at sys_ioctl+0x4a5
syscall(ffff800021fdd010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021fdd010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfd33c701a80, count: -12
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffdf580, count: 12
ddb{1}> trace
x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffdf580, count: -3
---
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syzbot
Sep 14, 2020, 3:55:11 AM9/14/20
to syzkaller-o...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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