panic: pool_cache_itemW_AmRaNgIiNcG:_ cShPeLck : NmOTb uLfpOlW EcREpDu OfNr eeS YlSiCsAtLL mo13d7i f-i7ed84: 0i0t eEm
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syzbot
Oct 19, 2019, 2:00:08 PM10/19/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: b1a12106 Don't check that the ipv6 source address of a nei..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1240d9e8e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=a487e8dbdf5740f25dc0
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+a487e8...@syzkaller.appspotmail.com
panic: pool_cache_itemW_AmRaNgIiNcG:_ cShPeLck : NmOTb uLfpOlW EcREpDu
OfNr eeS YlSiCsAtLL mo13d7i f-i7ed84: 0i0t eEm XaITd d0r a0
x
ffStopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*172326 4977 0 0x2 0 0 syz-executor.0
4177 63874 0 0x12 0 1 sshd
savectx(6,0,7f7ffffec900,89,95efdcd41c0,7f7ffffecdc0) at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffecdb0, count: 14
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
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr
0xfffffd8061bcd900+24 0x3ba3b29c3c710907!=0xc45c4f1c5bac0d07
ddb{0}> trace
savectx(6,0,7f7ffffec900,89,95efdcd41c0,7f7ffffecdc0) at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffecdb0, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800024c0bc50
rbx 0
rdx 0xffff800020a5ec60
rcx 0
rax 0x38
r8 0xffffffff814de02f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xcd913f2a7dd61b86
r12 0
r13 0
r14 0xffff800020a5ec60
r15 0
rip 0xffffffff81a263f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff800024c0bbd0
ss 0x10
savectx+0xb1: movl $0,%gs:0x530
ddb{0}> show proc
PROC (syz-executor.0) pid=172326 stat=onproc
flags process=2<EXEC> proc=0
pri=80, usrpri=80, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab09f8,0xffff800020a5fb40
process=0xffff800020adca80 user=0xffff800024c06000,
vmspace=0xfffffd807f00a8a0
estcpu=36, cpticks=2, pctcpu=0.12
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
39983 478261 6647 0 2 0 syz-executor.1
39983 286912 6647 0 3 0x4000080 fifor syz-executor.1
39983 2479 6647 0 3 0x4000080 fsleep syz-executor.1
* 4977 172326 50591 0 7 0x2 syz-executor.0
6647 465244 50591 0 3 0x82 nanosleep syz-executor.1
11068 475164 1 0 3 0x100083 ttyin getty
82844 348444 0 0 3 0x14200 acct acct
35893 8034 0 0 3 0x14200 bored sosplice
50591 7713 98408 0 3 0x82 thrsleep syz-fuzzer
50591 335889 98408 0 3 0x4000082 nanosleep syz-fuzzer
50591 449229 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 475661 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 285292 98408 0 3 0x4000082 nanosleep syz-fuzzer
50591 309482 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 210044 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 491269 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 61096 98408 0 3 0x4000082 kqread syz-fuzzer
50591 311148 98408 0 3 0x4000082 thrsleep syz-fuzzer
98408 416717 63874 0 3 0x10008a pause ksh
63874 4177 56676 0 7 0x12 sshd
56676 310616 1 0 3 0x80 select sshd
81716 241851 70159 74 3 0x100092 bpf pflogd
70159 305110 1 0 3 0x80 netio pflogd
9814 363578 82609 73 3 0x100090 kqread syslogd
82609 52189 1 0 3 0x100082 netio syslogd
47901 162445 1 77 3 0x100090 poll dhclient
49661 116401 1 0 3 0x80 poll dhclient
69530 427942 0 0 2 0x14200 zerothread
85372 107830 0 0 3 0x14200 aiodoned aiodoned
9950 475950 0 0 3 0x14200 syncer update
45749 24957 0 0 3 0x14200 cleaner cleaner
55050 519437 0 0 3 0x14200 reaper reaper
90521 503268 0 0 3 0x14200 pgdaemon pagedaemon
25681 425783 0 0 3 0x14200 bored crynlk
82576 405119 0 0 3 0x14200 bored crypto
34968 373423 0 0 3 0x40014200 acpi0 acpi0
29190 139372 0 0 3 0x40014200 idle1
52206 488189 0 0 3 0x14200 bored softnet
94193 90311 0 0 3 0x14200 bored systqmp
96778 454044 0 0 3 0x14200 bored systq
12940 450546 0 0 3 0x40014200 bored softclock
58935 436865 0 0 3 0x40014200 idle0
51119 409427 0 0 3 0x14200 bored smr
1 299615 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &map->mtx r = 0 (0xffffffff82621620)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 vm_map_lock_ln+0x60 sys/uvm/uvm_map.c:5348
#4 malloc+0x764 sys/kern/kern_malloc.c:310
#5 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#6 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#6 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
exclusive mutex
/syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0
(0xffffffff825049d0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 malloc+0x23b sys/kern/kern_malloc.c:209
#4 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#5 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#5 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
Process 4977 (syz-executor.0) thread 0xffff800020a5ec60 (172326)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82622388)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x348 mi_syscall sys/sys/syscall_mi.h:65 [inline]
#1 syscall+0x348 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
exclusive mutex &map->mtx r = 0 (0xffffffff82621620)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 vm_map_lock_ln+0x60 sys/uvm/uvm_map.c:5348
#4 malloc+0x764 sys/kern/kern_malloc.c:310
#5 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#6 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#6 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
exclusive mutex
/syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0
(0xffffffff825049d0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 malloc+0x23b sys/kern/kern_malloc.c:209
#4 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#5 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#5 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
Process 63874 (sshd) thread 0xffff800020ac1b38 (4177)
exclusive rwlock netlock r = 0 (0xffffffff824fc348)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x51b sys/kern/uipc_socket.c:512
#3 dofilewritev+0x1b7 sys/kern/sys_generic.c:364
#4 sys_write+0x83 sys/kern/sys_generic.c:284
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9660 7332K 7851K 78643K 28516 0 0
pcb 13 12K 14K 78643K 1673 0 0
rtable 143 15K 17K 78643K 5212 0 0
ifaddr 107 27K 29K 78643K 1412 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 2497 0 0
iov 0 0K 28K 78643K 1551 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1233 77K 78K 78643K 8212 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 9K 78643K 111 0 0
VM map 72 36K 36K 78643K 112 0 0
sem 12 0K 0K 78643K 1842 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 5 13K 25K 78643K 8179 0 0
sigio 0 0K 0K 78643K 116 0 0
proc 62 63K 95K 78643K 2927 0 0
subproc 32 2K 2K 78643K 739 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 1K 78643K 1127 0 0
in_multi 36 2K 3K 78643K 901 0 0
ether_multi 1 0K 0K 78643K 106 0 0
mrt 1 0K 0K 78643K 41 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 204 901K 901K 78643K 204 0 0
exec 0 0K 1K 78643K 1581 0 0
pfkey data 0 0K 4K 78643K 5 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 218 625K 626K 78643K 29555 0 0
UVM aobj 130 5K 5K 78643K 144 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 1707 0 0
NDP 25 0K 1K 78643K 448 0 0
temp 267 3564K 4201K 78643K 240184 0 0
kqueue 0 0K 0K 78643K 66 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 193 0 183 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 906 0 904 1 0 1 1 0
8 0
rtentry 112 897 0 846 2 0 2 2 0
8 0
unpcb 120 4353 0 4338 8 7 1 2 0
8 0
syncache 264 37 0 37 15 15 0 1 0
8 0
sackhl 24 3 0 3 3 3 0 1 0
8 0
tcpqe 32 151 0 151 6 6 0 1 0
8 0
tcpcb 544 3426 0 3422 20 19 1 12 0
8 0
inpcb 280 11169 0 11158 63 61 2 13 0
8 1
rttmr 72 12 0 11 2 1 1 1 0
8 0
ip6q 72 1 0 1 1 1 0 1 0
8 0
nd6 48 109 0 106 5 4 1 1 0
8 0
pkpcb 40 94 0 94 18 17 1 1 0
8 1
swfcl 56 4 0 0 1 0 1 1 0
8 0
ppxss 1128 193 0 193 19 18 1 1 0
8 1
pffrag 232 192 0 191 21 20 1 1 0
482 0
pffrnode 88 192 0 191 21 20 1 1 0
8 0
pffrent 40 6107 0 6085 20 19 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
pfstitem 24 608 0 561 1 0 1 1 0
8 0
pfstkey 112 608 0 561 4 1 3 3 0
8 0
pfstate 328 608 0 560 15 9 6 9 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 27 0 26 15 14 1 4 0
8 0
art_heap4 256 3558 0 3276 49 30 19 19 0
8 0
art_table 32 3585 0 3302 7 4 3 3 0
8 0
art_node 16 888 0 841 1 0 1 1 0
8 0
sysvmsgpl 40 6 0 4 1 0 1 1 0
8 0
semapl 112 1840 0 1830 1 0 1 1 0
8 0
shmpl 112 142 0 14 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 14537 0 13098 47 0 47 47 0
8 0
ffsino 272 14537 0 13098 97 0 97 97 0
8 0
nchpl 144 31379 0 30954 61 41 20 61 0
8 0
uvmvnodes 72 6281 0 0 115 0 115 115 0
8 0
vnodes 208 6281 0 0 331 0 331 331 0
8 0
namei 1024 110577 0 110577 6 5 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
vcpupl 1984 72 0 2 9 0 9 9 0
8 0
vmpool 552 110 0 40 7 2 5 5 0
8 0
scsiplug 64 11 0 11 8 8 0 1 0
8 0
scxspl 192 89945 0 89945 54 51 3 7 0
8 3
plimitpl 152 701 0 693 1 0 1 1 0
8 0
sigapl 432 8259 0 8244 3 1 2 3 0
8 0
futexpl 56 183717 0 183716 3 2 1 1 0
8 0
knotepl 112 2308 0 2287 13 12 1 3 0
8 0
kqueuepl 104 2423 0 2420 4 3 1 4 0
8 0
pipepl 112 5626 0 5607 17 16 1 2 0
8 0
fdescpl 488 8260 0 8244 3 0 3 3 0
8 0
filepl 152 78253 0 78146 77 72 5 14 0
8 0
lockfpl 104 2768 0 2767 1 0 1 1 0
8 0
lockfspl 48 928 0 927 1 0 1 1 0
8 0
sessionpl 112 62 0 51 1 0 1 1 0
8 0
pgrppl 48 162 0 151 1 0 1 1 0
8 0
ucredpl 96 8777 0 8768 1 0 1 1 0
8 0
zombiepl 144 8248 0 8248 4 3 1 1 0
8 1
processpl 896 8281 0 8248 4 0 4 4 0
8 0
procpl 632 26494 0 26450 8 3 5 5 0
8 1
srpgc 64 68 0 68 23 23 0 1 0
8 0
sosppl 128 168 0 168 28 28 0 1 0
8 0
sockpl 384 16678 0 16654 98 94 4 23 0
8 1
mcl64k 65536 669 0 0 71 37 34 34 0
8 0
mcl16k 16384 36 0 0 5 3 2 3 0
8 0
mcl12k 12288 17 0 0 2 0 2 2 0
8 0
mcl9k 9216 25 0 0 2 0 2 2 0
8 0
mcl8k 8192 33 0 0 4 1 3 3 0
8 0
mcl4k 4096 26 0 0 4 1 3 3 0
8 0
mcl2k2 2112 8 0 0 1 0 1 1 0
8 0
mcl2k 2048 245 0 0 24 10 14 24 0
8 0
mtagpl 80 108 0 0 1 0 1 1 0
8 0
mbufpl 256 1230 0 0 49 0 49 49 0
8 0
bufpl 256 30799 0 23751 441 0 441 441 0
8 0
anonpl 16 1028544 0 1005405 300 200 100 115 0
124 6
amapchunkpl 152 58539 0 58391 103 93 10 20 0
158 2
amappl16 192 49145 0 47778 295 226 69 83 0
8 0
amappl15 184 188 0 187 1 0 1 1 0
8 0
amappl14 176 2773 0 2770 1 0 1 1 0
8 0
amappl13 168 805 0 804 6 5 1 1 0
8 0
amappl12 160 458 0 457 2 1 1 1 0
8 0
amappl11 152 179 0 163 1 0 1 1 0
8 0
amappl10 144 2114 0 2109 1 0 1 1 0
8 0
amappl9 136 2057 0 2050 1 0 1 1 0
8 0
amappl8 128 1590 0 1552 2 0 2 2 0
8 0
amappl7 120 2297 0 2287 1 0 1 1 0
8 0
amappl6 112 135 0 120 1 0 1 1 0
8 0
amappl5 104 914 0 900 1 0 1 1 0
8 0
amappl4 96 7958 0 7921 1 0 1 1 0
8 0
amappl3 88 3277 0 3264 1 0 1 1 0
8 0
amappl2 80 63205 0 63125 3 1 2 3 0
8 0
amappl1 72 195472 0 195026 25 15 10 20 0
8 0
amappl 80 27561 0 27483 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 17 0 17 1 1 0 1 0
8 0
aobjpl 64 143 0 14 3 0 3 3 0
8 0
uaddrrnd 24 8370 0 8244 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 8370 0 8244 1 0 1 1 0
8 0
vmmpekpl 168 66730 0 66684 5 2 3 3 0
8 0
vmmpepl 168 1062554 0 1059796 479 326 153 160 0 357
28
vmsppl 368 8259 0 8244 2 0 2 2 0
8 0
pdppl 4096 16747 0 16638 17 3 14 14 0
8 0
pvpl 32 2642351 0 2619835 511 305 206 218 0 265
19
pmappl 232 8369 0 8284 7 1 6 6 0
8 1
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 811 0 126 20 0 20 20 0
8 0
---
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: b1a12106 Don't check that the ipv6 source address of a nei..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1240d9e8e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=a487e8dbdf5740f25dc0
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+a487e8...@syzkaller.appspotmail.com
panic: pool_cache_itemW_AmRaNgIiNcG:_ cShPeLck : NmOTb uLfpOlW EcREpDu
OfNr eeS YlSiCsAtLL mo13d7i f-i7ed84: 0i0t eEm XaITd d0r a0
x
ffStopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*172326 4977 0 0x2 0 0 syz-executor.0
4177 63874 0 0x12 0 1 sshd
savectx(6,0,7f7ffffec900,89,95efdcd41c0,7f7ffffecdc0) at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffecdb0, count: 14
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
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr
0xfffffd8061bcd900+24 0x3ba3b29c3c710907!=0xc45c4f1c5bac0d07
ddb{0}> trace
savectx(6,0,7f7ffffec900,89,95efdcd41c0,7f7ffffecdc0) at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffecdb0, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800024c0bc50
rbx 0
rdx 0xffff800020a5ec60
rcx 0
rax 0x38
r8 0xffffffff814de02f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xcd913f2a7dd61b86
r12 0
r13 0
r14 0xffff800020a5ec60
r15 0
rip 0xffffffff81a263f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff800024c0bbd0
ss 0x10
savectx+0xb1: movl $0,%gs:0x530
ddb{0}> show proc
PROC (syz-executor.0) pid=172326 stat=onproc
flags process=2<EXEC> proc=0
pri=80, usrpri=80, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab09f8,0xffff800020a5fb40
process=0xffff800020adca80 user=0xffff800024c06000,
vmspace=0xfffffd807f00a8a0
estcpu=36, cpticks=2, pctcpu=0.12
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
39983 478261 6647 0 2 0 syz-executor.1
39983 286912 6647 0 3 0x4000080 fifor syz-executor.1
39983 2479 6647 0 3 0x4000080 fsleep syz-executor.1
* 4977 172326 50591 0 7 0x2 syz-executor.0
6647 465244 50591 0 3 0x82 nanosleep syz-executor.1
11068 475164 1 0 3 0x100083 ttyin getty
82844 348444 0 0 3 0x14200 acct acct
35893 8034 0 0 3 0x14200 bored sosplice
50591 7713 98408 0 3 0x82 thrsleep syz-fuzzer
50591 335889 98408 0 3 0x4000082 nanosleep syz-fuzzer
50591 449229 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 475661 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 285292 98408 0 3 0x4000082 nanosleep syz-fuzzer
50591 309482 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 210044 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 491269 98408 0 3 0x4000082 thrsleep syz-fuzzer
50591 61096 98408 0 3 0x4000082 kqread syz-fuzzer
50591 311148 98408 0 3 0x4000082 thrsleep syz-fuzzer
98408 416717 63874 0 3 0x10008a pause ksh
63874 4177 56676 0 7 0x12 sshd
56676 310616 1 0 3 0x80 select sshd
81716 241851 70159 74 3 0x100092 bpf pflogd
70159 305110 1 0 3 0x80 netio pflogd
9814 363578 82609 73 3 0x100090 kqread syslogd
82609 52189 1 0 3 0x100082 netio syslogd
47901 162445 1 77 3 0x100090 poll dhclient
49661 116401 1 0 3 0x80 poll dhclient
69530 427942 0 0 2 0x14200 zerothread
85372 107830 0 0 3 0x14200 aiodoned aiodoned
9950 475950 0 0 3 0x14200 syncer update
45749 24957 0 0 3 0x14200 cleaner cleaner
55050 519437 0 0 3 0x14200 reaper reaper
90521 503268 0 0 3 0x14200 pgdaemon pagedaemon
25681 425783 0 0 3 0x14200 bored crynlk
82576 405119 0 0 3 0x14200 bored crypto
34968 373423 0 0 3 0x40014200 acpi0 acpi0
29190 139372 0 0 3 0x40014200 idle1
52206 488189 0 0 3 0x14200 bored softnet
94193 90311 0 0 3 0x14200 bored systqmp
96778 454044 0 0 3 0x14200 bored systq
12940 450546 0 0 3 0x40014200 bored softclock
58935 436865 0 0 3 0x40014200 idle0
51119 409427 0 0 3 0x14200 bored smr
1 299615 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &map->mtx r = 0 (0xffffffff82621620)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 vm_map_lock_ln+0x60 sys/uvm/uvm_map.c:5348
#4 malloc+0x764 sys/kern/kern_malloc.c:310
#5 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#6 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#6 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
exclusive mutex
/syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0
(0xffffffff825049d0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 malloc+0x23b sys/kern/kern_malloc.c:209
#4 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#5 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#5 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
Process 4977 (syz-executor.0) thread 0xffff800020a5ec60 (172326)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82622388)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x348 mi_syscall sys/sys/syscall_mi.h:65 [inline]
#1 syscall+0x348 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
exclusive mutex &map->mtx r = 0 (0xffffffff82621620)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 vm_map_lock_ln+0x60 sys/uvm/uvm_map.c:5348
#4 malloc+0x764 sys/kern/kern_malloc.c:310
#5 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#6 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#6 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
exclusive mutex
/syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0
(0xffffffff825049d0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 malloc+0x23b sys/kern/kern_malloc.c:209
#4 ktrsyscall+0x192 sys/kern/kern_ktrace.c:174
#5 syscall+0x35b mi_syscall sys/sys/syscall_mi.h:66 [inline]
#5 syscall+0x35b sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
Process 63874 (sshd) thread 0xffff800020ac1b38 (4177)
exclusive rwlock netlock r = 0 (0xffffffff824fc348)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x51b sys/kern/uipc_socket.c:512
#3 dofilewritev+0x1b7 sys/kern/sys_generic.c:364
#4 sys_write+0x83 sys/kern/sys_generic.c:284
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9660 7332K 7851K 78643K 28516 0 0
pcb 13 12K 14K 78643K 1673 0 0
rtable 143 15K 17K 78643K 5212 0 0
ifaddr 107 27K 29K 78643K 1412 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 2497 0 0
iov 0 0K 28K 78643K 1551 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1233 77K 78K 78643K 8212 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 9K 78643K 111 0 0
VM map 72 36K 36K 78643K 112 0 0
sem 12 0K 0K 78643K 1842 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 5 13K 25K 78643K 8179 0 0
sigio 0 0K 0K 78643K 116 0 0
proc 62 63K 95K 78643K 2927 0 0
subproc 32 2K 2K 78643K 739 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 1K 78643K 1127 0 0
in_multi 36 2K 3K 78643K 901 0 0
ether_multi 1 0K 0K 78643K 106 0 0
mrt 1 0K 0K 78643K 41 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 204 901K 901K 78643K 204 0 0
exec 0 0K 1K 78643K 1581 0 0
pfkey data 0 0K 4K 78643K 5 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 218 625K 626K 78643K 29555 0 0
UVM aobj 130 5K 5K 78643K 144 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 1707 0 0
NDP 25 0K 1K 78643K 448 0 0
temp 267 3564K 4201K 78643K 240184 0 0
kqueue 0 0K 0K 78643K 66 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 193 0 183 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 906 0 904 1 0 1 1 0
8 0
rtentry 112 897 0 846 2 0 2 2 0
8 0
unpcb 120 4353 0 4338 8 7 1 2 0
8 0
syncache 264 37 0 37 15 15 0 1 0
8 0
sackhl 24 3 0 3 3 3 0 1 0
8 0
tcpqe 32 151 0 151 6 6 0 1 0
8 0
tcpcb 544 3426 0 3422 20 19 1 12 0
8 0
inpcb 280 11169 0 11158 63 61 2 13 0
8 1
rttmr 72 12 0 11 2 1 1 1 0
8 0
ip6q 72 1 0 1 1 1 0 1 0
8 0
nd6 48 109 0 106 5 4 1 1 0
8 0
pkpcb 40 94 0 94 18 17 1 1 0
8 1
swfcl 56 4 0 0 1 0 1 1 0
8 0
ppxss 1128 193 0 193 19 18 1 1 0
8 1
pffrag 232 192 0 191 21 20 1 1 0
482 0
pffrnode 88 192 0 191 21 20 1 1 0
8 0
pffrent 40 6107 0 6085 20 19 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
pfstitem 24 608 0 561 1 0 1 1 0
8 0
pfstkey 112 608 0 561 4 1 3 3 0
8 0
pfstate 328 608 0 560 15 9 6 9 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 27 0 26 15 14 1 4 0
8 0
art_heap4 256 3558 0 3276 49 30 19 19 0
8 0
art_table 32 3585 0 3302 7 4 3 3 0
8 0
art_node 16 888 0 841 1 0 1 1 0
8 0
sysvmsgpl 40 6 0 4 1 0 1 1 0
8 0
semapl 112 1840 0 1830 1 0 1 1 0
8 0
shmpl 112 142 0 14 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 14537 0 13098 47 0 47 47 0
8 0
ffsino 272 14537 0 13098 97 0 97 97 0
8 0
nchpl 144 31379 0 30954 61 41 20 61 0
8 0
uvmvnodes 72 6281 0 0 115 0 115 115 0
8 0
vnodes 208 6281 0 0 331 0 331 331 0
8 0
namei 1024 110577 0 110577 6 5 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
vcpupl 1984 72 0 2 9 0 9 9 0
8 0
vmpool 552 110 0 40 7 2 5 5 0
8 0
scsiplug 64 11 0 11 8 8 0 1 0
8 0
scxspl 192 89945 0 89945 54 51 3 7 0
8 3
plimitpl 152 701 0 693 1 0 1 1 0
8 0
sigapl 432 8259 0 8244 3 1 2 3 0
8 0
futexpl 56 183717 0 183716 3 2 1 1 0
8 0
knotepl 112 2308 0 2287 13 12 1 3 0
8 0
kqueuepl 104 2423 0 2420 4 3 1 4 0
8 0
pipepl 112 5626 0 5607 17 16 1 2 0
8 0
fdescpl 488 8260 0 8244 3 0 3 3 0
8 0
filepl 152 78253 0 78146 77 72 5 14 0
8 0
lockfpl 104 2768 0 2767 1 0 1 1 0
8 0
lockfspl 48 928 0 927 1 0 1 1 0
8 0
sessionpl 112 62 0 51 1 0 1 1 0
8 0
pgrppl 48 162 0 151 1 0 1 1 0
8 0
ucredpl 96 8777 0 8768 1 0 1 1 0
8 0
zombiepl 144 8248 0 8248 4 3 1 1 0
8 1
processpl 896 8281 0 8248 4 0 4 4 0
8 0
procpl 632 26494 0 26450 8 3 5 5 0
8 1
srpgc 64 68 0 68 23 23 0 1 0
8 0
sosppl 128 168 0 168 28 28 0 1 0
8 0
sockpl 384 16678 0 16654 98 94 4 23 0
8 1
mcl64k 65536 669 0 0 71 37 34 34 0
8 0
mcl16k 16384 36 0 0 5 3 2 3 0
8 0
mcl12k 12288 17 0 0 2 0 2 2 0
8 0
mcl9k 9216 25 0 0 2 0 2 2 0
8 0
mcl8k 8192 33 0 0 4 1 3 3 0
8 0
mcl4k 4096 26 0 0 4 1 3 3 0
8 0
mcl2k2 2112 8 0 0 1 0 1 1 0
8 0
mcl2k 2048 245 0 0 24 10 14 24 0
8 0
mtagpl 80 108 0 0 1 0 1 1 0
8 0
mbufpl 256 1230 0 0 49 0 49 49 0
8 0
bufpl 256 30799 0 23751 441 0 441 441 0
8 0
anonpl 16 1028544 0 1005405 300 200 100 115 0
124 6
amapchunkpl 152 58539 0 58391 103 93 10 20 0
158 2
amappl16 192 49145 0 47778 295 226 69 83 0
8 0
amappl15 184 188 0 187 1 0 1 1 0
8 0
amappl14 176 2773 0 2770 1 0 1 1 0
8 0
amappl13 168 805 0 804 6 5 1 1 0
8 0
amappl12 160 458 0 457 2 1 1 1 0
8 0
amappl11 152 179 0 163 1 0 1 1 0
8 0
amappl10 144 2114 0 2109 1 0 1 1 0
8 0
amappl9 136 2057 0 2050 1 0 1 1 0
8 0
amappl8 128 1590 0 1552 2 0 2 2 0
8 0
amappl7 120 2297 0 2287 1 0 1 1 0
8 0
amappl6 112 135 0 120 1 0 1 1 0
8 0
amappl5 104 914 0 900 1 0 1 1 0
8 0
amappl4 96 7958 0 7921 1 0 1 1 0
8 0
amappl3 88 3277 0 3264 1 0 1 1 0
8 0
amappl2 80 63205 0 63125 3 1 2 3 0
8 0
amappl1 72 195472 0 195026 25 15 10 20 0
8 0
amappl 80 27561 0 27483 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 17 0 17 1 1 0 1 0
8 0
aobjpl 64 143 0 14 3 0 3 3 0
8 0
uaddrrnd 24 8370 0 8244 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 8370 0 8244 1 0 1 1 0
8 0
vmmpekpl 168 66730 0 66684 5 2 3 3 0
8 0
vmmpepl 168 1062554 0 1059796 479 326 153 160 0 357
28
vmsppl 368 8259 0 8244 2 0 2 2 0
8 0
pdppl 4096 16747 0 16638 17 3 14 14 0
8 0
pvpl 32 2642351 0 2619835 511 305 206 218 0 265
19
pmappl 232 8369 0 8284 7 1 6 6 0
8 1
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 811 0 126 20 0 20 20 0
8 0
---
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.
Greg Steuck
Oct 19, 2019, 5:08:01 PM10/19/19
to syzbot, syzkaller-o...@googlegroups.com
#syz dup panic: pool_cache_item_magic_check: mbufpl cpu free list
modified: item addr ADDR+16 0x0!=ADDR (2)
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modified: item addr ADDR+16 0x0!=ADDR (2)
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Anton Lindqvist
Oct 22, 2019, 6:45:19 AM10/22/19
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr ADDR+16 0x0!=ADDR (2)
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