pool: free list modified: shmpl (2)
0 views
Skip to first unread message
syzbot
Dec 5, 2019, 6:09:09 PM12/5/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: ce2d2588 Document IP6_SOIIKEY_LEN
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=158c5446e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=fb5d34b42138e606cdb3
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+fb5d34...@syzkaller.appspotmail.com
panic: pool_do_get: shmpl free list modified: page 0xfffffd8062243000; item
addr 0xfffffd8062243e00; offset 0x24=0x100ca
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*268839 71398 0 0 0x4000000 0K syz-executor.1
65752 72476 0 0 0x4000000 1 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d3b4) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_get(ffffffff8263a120,1,ffff800023bb5a58) at pool_do_get+0x472
sys/kern/subr_pool.c:744
pool_get(ffffffff8263a120,1) at pool_get+0xeb sys/kern/subr_pool.c:581
shmget_allocate_segment(ffff800020ac1160,ffff800023bb5be8,169,ffff800023bb5c30)
at
shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
sys_shmget(ffff800020ac1160,ffff800023bb5be8,ffff800023bb5c30) at
sys_shmget+0x13f sys/kern/sysv_shm.c:468
syscall(ffff800023bb5cb0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800023bb5cb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2474dc4eb90, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
pool_do_get: shmpl free list modified: page 0xfffffd8062243000; item addr
0xfffffd8062243e00; offset 0x24=0x100ca
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d3b4) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_get(ffffffff8263a120,1,ffff800023bb5a58) at pool_do_get+0x472
sys/kern/subr_pool.c:744
pool_get(ffffffff8263a120,1) at pool_get+0xeb sys/kern/subr_pool.c:581
shmget_allocate_segment(ffff800020ac1160,ffff800023bb5be8,169,ffff800023bb5c30)
at
shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
sys_shmget(ffff800020ac1160,ffff800023bb5be8,ffff800023bb5c30) at
sys_shmget+0x13f sys/kern/sysv_shm.c:468
syscall(ffff800023bb5cb0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800023bb5cb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2474dc4eb90, count: -8
ddb{0}> show registers
rdi 0xffffffff813ee2e7 db_enter+0x17
rsi 0x36b9 __ALIGN_SIZE+0x26b9
rbp 0xffff800023bb58a0
rbx 0xffff800023bb5950
rdx 0x36ba __ALIGN_SIZE+0x26ba
rcx 0xffff800021b8c000
rax 0xffff800021b8c000
r8 0xffffffff81cd657f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x8c97342d0e3a9c22
r12 0x3000000008
r13 0xffff800023bb58b0
r14 0x100
r15 0x1
rip 0xffffffff813ee2e8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800023bb5890
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=268839 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac0290,0xffffffff82617120
process=0xffff800020aec000 user=0xffff800023bb0000,
vmspace=0xfffffd807f0085c0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
71398 509819 65132 0 2 0 syz-executor.1
*71398 268839 65132 0 7 0x4000000 syz-executor.1
72476 128119 45782 0 2 0 syz-executor.0
72476 65752 45782 0 7 0x4000000 syz-executor.0
89994 172040 0 0 3 0x14200 bored sosplice
65132 123358 1881 0 2 0x482 syz-executor.1
45782 320851 1881 0 2 0x482 syz-executor.0
1881 498994 73496 0 3 0x82 thrsleep syz-fuzzer
1881 372620 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 86811 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 436956 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 195214 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 303069 73496 0 3 0x4000082 kqread syz-fuzzer
1881 2535 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 43419 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 358905 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 117441 73496 0 3 0x4000082 thrsleep syz-fuzzer
73496 24559 18782 0 3 0x10008a pause ksh
18782 508227 80466 0 3 0x92 select sshd
42847 240373 1 0 3 0x100083 ttyin getty
80466 152580 1 0 3 0x80 select sshd
84252 82997 74163 74 3 0x100092 bpf pflogd
74163 402267 1 0 3 0x80 netio pflogd
24673 267324 45654 73 3 0x100090 kqread syslogd
45654 355047 1 0 3 0x100082 netio syslogd
81830 76402 1 77 3 0x100090 poll dhclient
80512 165627 1 0 3 0x80 poll dhclient
5104 28314 0 0 2 0x14200 zerothread
31241 107290 0 0 3 0x14200 aiodoned aiodoned
77470 225797 0 0 3 0x14200 syncer update
58164 26889 0 0 3 0x14200 cleaner cleaner
67427 324336 0 0 3 0x14200 reaper reaper
60635 441304 0 0 3 0x14200 pgdaemon pagedaemon
659 280694 0 0 3 0x14200 bored crynlk
45312 382641 0 0 3 0x14200 bored crypto
64835 178163 0 0 3 0x40014200 acpi0 acpi0
28669 316897 0 0 3 0x40014200 idle1
55458 345732 0 0 2 0x14200 softnet
32957 217014 0 0 3 0x14200 bored systqmp
80665 387496 0 0 3 0x14200 bored systq
89299 113776 0 0 3 0x40014200 bored softclock
12293 441895 0 0 3 0x40014200 idle0
85647 325655 0 0 3 0x14200 bored smr
1 277478 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex shmpl r = 0 (0xffffffff8263a130)
#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 pool_get+0xbf sys/kern/subr_pool.c:578
#4 shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
#5 sys_shmget+0x13f sys/kern/sysv_shm.c:468
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
CPU 1:
exclusive mutex mbufpl r = 0 (0xffffffff8263a8b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 pool_cache_get+0xa3 pl_enter_try sys/kern/subr_pool.c:109 [inline]
#2 pool_cache_get+0xa3 pool_list_enter sys/kern/subr_pool.c:1797 [inline]
#2 pool_cache_get+0xa3 pool_cache_list_alloc sys/kern/subr_pool.c:1814
[inline]
#2 pool_cache_get+0xa3 sys/kern/subr_pool.c:1887
#3 pool_get+0x91 sys/kern/subr_pool.c:572
#4 m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
#5 ip_fragment+0x13a sys/netinet/ip_output.c:682
#6 ip_output+0xfc1 sys/netinet/ip_output.c:501
#7 rip_output+0x252 sys/netinet/raw_ip.c:289
#8 rip_usrreq+0x46a sys/netinet/raw_ip.c:538
#9 sosend+0x645 sys/kern/uipc_socket.c:524
#10 sendit+0x52b sys/kern/uipc_syscalls.c:662
#11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#13 Xsyscall+0x128
Process 71398 (syz-executor.1) thread 0xffff800020ac1160 (268839)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82651ec8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
exclusive mutex shmpl r = 0 (0xffffffff8263a130)
#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 pool_get+0xbf sys/kern/subr_pool.c:578
#4 shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
#5 sys_shmget+0x13f sys/kern/sysv_shm.c:468
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
Process 72476 (syz-executor.0) thread 0xffff800020ac0290 (65752)
exclusive rwlock netlock r = 0 (0xffffffff824c24a8)
#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 sendit+0x52b sys/kern/uipc_syscalls.c:662
#4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#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
devbuf 9494 6469K 6982K 78643K 10731 0
pcb 13 8K 8K 78643K 25 0
rtable 108 3K 4K 78643K 229 0
ifaddr 54 12K 12K 78643K 60 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 1469 0
iov 0 0K 2K 78643K 2 0
mount 1 1K 1K 78643K 1 0
vnodes 1232 77K 77K 78643K 1272 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 4 0
VM map 2 1K 1K 78643K 2 0
sem 10 0K 0K 78643K 14 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 70 0
proc 59 63K 83K 78643K 447 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 12 0
in_multi 29 1K 2K 78643K 41 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 42 185K 185K 78643K 42 0
exec 0 0K 1K 78643K 211 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 117 22K 26K 78643K 1164 0
UVM aobj 2 2K 2K 78643K 4 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 2 0
NDP 8 0K 0K 78643K 13 0
temp 83 3009K 3073K 78643K 6739 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 6 0 0 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 25 0 23 1 0 1 1 0
8 0
rtentry 112 53 0 9 2 0 2 2 0
8 0
unpcb 120 43 0 32 1 0 1 1 0
8 0
syncache 264 4 0 4 1 1 0 1 0
8 0
tcpqe 32 256 0 256 1 0 1 1 0
8 1
tcpcb 544 40 0 36 1 0 1 1 0
8 0
inpcb 280 112 0 104 2 0 2 2 0
8 1
nd6 48 5 0 2 1 0 1 1 0
8 0
ppxss 1128 1 0 0 1 0 1 1 0
8 0
pffrag 232 3 0 2 1 0 1 1 0
482 0
pffrnode 88 3 0 2 1 0 1 1 0
8 0
pffrent 40 106 0 90 1 0 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 20 0 0 1 0 1 1 0
8 0
pfstkey 112 20 0 0 1 0 1 1 0
8 0
pfstate 328 20 0 0 2 0 2 2 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
art_heap4 256 249 0 45 14 0 14 14 0
8 0
art_table 32 250 0 45 2 0 2 2 0
8 0
art_node 16 52 0 11 1 0 1 1 0
8 0
sysvmsgpl 40 4 0 3 1 0 1 1 0
8 0
semupl 112 2 0 2 1 0 1 1 0
8 1
semapl 112 8 0 0 1 0 1 1 0
8 0
shmpl 112 2 0 2 1 0 1 1 0
8 1
pool(0xffffffff8263a120:shmpl): page inconsistency: page
0xfffffd8062243000; 34 on list, 0 missing, 35 items per page
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 1483 0 73 46 0 46 46 0
8 0
ffsino 272 1483 0 73 95 0 95 95 0
8 0
nchpl 144 1771 0 149 61 0 61 61 0
8 0
uvmvnodes 72 1568 0 0 29 0 29 29 0
8 0
vnodes 208 1568 0 0 83 0 83 83 0
8 0
namei 1024 4705 0 4705 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scxspl 192 5224 0 5224 2 1 1 2 0
8 1
plimitpl 152 17 0 9 1 0 1 1 0
8 0
sigapl 432 269 0 253 3 0 3 3 0
8 1
futexpl 56 907 0 907 1 0 1 1 0
8 1
knotepl 112 57 0 38 1 0 1 1 0
8 0
kqueuepl 104 10 0 8 1 0 1 1 0
8 0
pipepl 160 178 0 157 1 0 1 1 0
8 0
fdescpl 488 270 0 253 3 0 3 3 0
8 0
filepl 152 1563 0 1450 5 0 5 5 0
8 0
lockfpl 104 17 0 16 1 0 1 1 0
8 0
lockfspl 48 6 0 5 1 0 1 1 0
8 0
sessionpl 112 18 0 7 1 0 1 1 0
8 0
pgrppl 48 18 0 7 1 0 1 1 0
8 0
ucredpl 96 111 0 102 1 0 1 1 0
8 0
zombiepl 144 253 0 253 1 0 1 1 0
8 1
processpl 896 286 0 253 4 0 4 4 0
8 0
procpl 632 386 0 342 5 0 5 5 0
8 1
sosppl 128 3 0 3 1 0 1 1 0
8 1
sockpl 384 180 0 159 4 0 4 4 0
8 1
mcl64k 65536 1 0 0 1 0 1 1 0
8 0
mcl12k 12288 2 0 0 1 0 1 1 0
8 0
mcl8k 8192 1 0 0 1 0 1 1 0
8 0
mcl4k 4096 5 0 0 1 0 1 1 0
8 0
mcl2k 2048 171 0 0 21 0 21 21 0
8 0
mtagpl 80 4 0 0 1 0 1 1 0
8 0
mbufpl 256 378 0 0 24 0 24 24 0
8 0
bufpl 280 6330 0 1344 357 0 357 357 0
8 0
anonpl 16 48917 0 29820 90 1 89 89 0 125
12
amapchunkpl 152 1405 0 1245 8 0 8 8 0
158 1
amappl16 192 1502 0 454 62 4 58 62 0
8 5
amappl15 184 77 0 72 1 0 1 1 0
8 0
amappl14 176 31 0 30 1 0 1 1 0
8 0
amappl13 168 20 0 17 1 0 1 1 0
8 0
amappl12 160 2 0 1 2 1 1 1 0
8 0
amappl11 152 59 0 44 1 0 1 1 0
8 0
amappl10 144 16 0 12 1 0 1 1 0
8 0
amappl9 136 605 0 601 1 0 1 1 0
8 0
amappl8 128 125 0 101 1 0 1 1 0
8 0
amappl7 120 111 0 98 1 0 1 1 0
8 0
amappl6 112 57 0 50 1 0 1 1 0
8 0
amappl5 104 129 0 115 1 0 1 1 0
8 0
amappl4 96 521 0 488 2 1 1 2 0
8 0
amappl3 88 118 0 111 1 0 1 1 0
8 0
amappl2 80 1298 0 1212 3 1 2 3 0
8 0
amappl1 72 16281 0 15822 25 11 14 20 0
8 4
amappl 80 638 0 590 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 3 0 2 1 0 1 1 0
8 0
uaddrrnd 24 270 0 253 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 270 0 253 1 0 1 1 0
8 0
vmmpekpl 168 6046 0 6013 2 0 2 2 0
8 0
vmmpepl 168 42468 0 40144 137 5 132 132 0 357
30
vmsppl 368 269 0 253 2 0 2 2 0
8 0
pdppl 4096 547 0 506 6 0 6 6 0
8 0
pvpl 32 159731 0 137376 213 0 213 213 0 265
32
pmappl 232 269 0 253 2 0 2 2 0
8 1
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 175 0 3 5 0 5 5 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: ce2d2588 Document IP6_SOIIKEY_LEN
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=158c5446e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=fb5d34b42138e606cdb3
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+fb5d34...@syzkaller.appspotmail.com
panic: pool_do_get: shmpl free list modified: page 0xfffffd8062243000; item
addr 0xfffffd8062243e00; offset 0x24=0x100ca
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*268839 71398 0 0 0x4000000 0K syz-executor.1
65752 72476 0 0 0x4000000 1 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d3b4) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_get(ffffffff8263a120,1,ffff800023bb5a58) at pool_do_get+0x472
sys/kern/subr_pool.c:744
pool_get(ffffffff8263a120,1) at pool_get+0xeb sys/kern/subr_pool.c:581
shmget_allocate_segment(ffff800020ac1160,ffff800023bb5be8,169,ffff800023bb5c30)
at
shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
sys_shmget(ffff800020ac1160,ffff800023bb5be8,ffff800023bb5c30) at
sys_shmget+0x13f sys/kern/sysv_shm.c:468
syscall(ffff800023bb5cb0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800023bb5cb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2474dc4eb90, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
pool_do_get: shmpl free list modified: page 0xfffffd8062243000; item addr
0xfffffd8062243e00; offset 0x24=0x100ca
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8220d3b4) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_get(ffffffff8263a120,1,ffff800023bb5a58) at pool_do_get+0x472
sys/kern/subr_pool.c:744
pool_get(ffffffff8263a120,1) at pool_get+0xeb sys/kern/subr_pool.c:581
shmget_allocate_segment(ffff800020ac1160,ffff800023bb5be8,169,ffff800023bb5c30)
at
shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
sys_shmget(ffff800020ac1160,ffff800023bb5be8,ffff800023bb5c30) at
sys_shmget+0x13f sys/kern/sysv_shm.c:468
syscall(ffff800023bb5cb0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800023bb5cb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2474dc4eb90, count: -8
ddb{0}> show registers
rdi 0xffffffff813ee2e7 db_enter+0x17
rsi 0x36b9 __ALIGN_SIZE+0x26b9
rbp 0xffff800023bb58a0
rbx 0xffff800023bb5950
rdx 0x36ba __ALIGN_SIZE+0x26ba
rcx 0xffff800021b8c000
rax 0xffff800021b8c000
r8 0xffffffff81cd657f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x8c97342d0e3a9c22
r12 0x3000000008
r13 0xffff800023bb58b0
r14 0x100
r15 0x1
rip 0xffffffff813ee2e8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800023bb5890
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=268839 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac0290,0xffffffff82617120
process=0xffff800020aec000 user=0xffff800023bb0000,
vmspace=0xfffffd807f0085c0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
71398 509819 65132 0 2 0 syz-executor.1
*71398 268839 65132 0 7 0x4000000 syz-executor.1
72476 128119 45782 0 2 0 syz-executor.0
72476 65752 45782 0 7 0x4000000 syz-executor.0
89994 172040 0 0 3 0x14200 bored sosplice
65132 123358 1881 0 2 0x482 syz-executor.1
45782 320851 1881 0 2 0x482 syz-executor.0
1881 498994 73496 0 3 0x82 thrsleep syz-fuzzer
1881 372620 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 86811 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 436956 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 195214 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 303069 73496 0 3 0x4000082 kqread syz-fuzzer
1881 2535 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 43419 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 358905 73496 0 3 0x4000082 thrsleep syz-fuzzer
1881 117441 73496 0 3 0x4000082 thrsleep syz-fuzzer
73496 24559 18782 0 3 0x10008a pause ksh
18782 508227 80466 0 3 0x92 select sshd
42847 240373 1 0 3 0x100083 ttyin getty
80466 152580 1 0 3 0x80 select sshd
84252 82997 74163 74 3 0x100092 bpf pflogd
74163 402267 1 0 3 0x80 netio pflogd
24673 267324 45654 73 3 0x100090 kqread syslogd
45654 355047 1 0 3 0x100082 netio syslogd
81830 76402 1 77 3 0x100090 poll dhclient
80512 165627 1 0 3 0x80 poll dhclient
5104 28314 0 0 2 0x14200 zerothread
31241 107290 0 0 3 0x14200 aiodoned aiodoned
77470 225797 0 0 3 0x14200 syncer update
58164 26889 0 0 3 0x14200 cleaner cleaner
67427 324336 0 0 3 0x14200 reaper reaper
60635 441304 0 0 3 0x14200 pgdaemon pagedaemon
659 280694 0 0 3 0x14200 bored crynlk
45312 382641 0 0 3 0x14200 bored crypto
64835 178163 0 0 3 0x40014200 acpi0 acpi0
28669 316897 0 0 3 0x40014200 idle1
55458 345732 0 0 2 0x14200 softnet
32957 217014 0 0 3 0x14200 bored systqmp
80665 387496 0 0 3 0x14200 bored systq
89299 113776 0 0 3 0x40014200 bored softclock
12293 441895 0 0 3 0x40014200 idle0
85647 325655 0 0 3 0x14200 bored smr
1 277478 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex shmpl r = 0 (0xffffffff8263a130)
#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 pool_get+0xbf sys/kern/subr_pool.c:578
#4 shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
#5 sys_shmget+0x13f sys/kern/sysv_shm.c:468
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
CPU 1:
exclusive mutex mbufpl r = 0 (0xffffffff8263a8b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 pool_cache_get+0xa3 pl_enter_try sys/kern/subr_pool.c:109 [inline]
#2 pool_cache_get+0xa3 pool_list_enter sys/kern/subr_pool.c:1797 [inline]
#2 pool_cache_get+0xa3 pool_cache_list_alloc sys/kern/subr_pool.c:1814
[inline]
#2 pool_cache_get+0xa3 sys/kern/subr_pool.c:1887
#3 pool_get+0x91 sys/kern/subr_pool.c:572
#4 m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
#5 ip_fragment+0x13a sys/netinet/ip_output.c:682
#6 ip_output+0xfc1 sys/netinet/ip_output.c:501
#7 rip_output+0x252 sys/netinet/raw_ip.c:289
#8 rip_usrreq+0x46a sys/netinet/raw_ip.c:538
#9 sosend+0x645 sys/kern/uipc_socket.c:524
#10 sendit+0x52b sys/kern/uipc_syscalls.c:662
#11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#13 Xsyscall+0x128
Process 71398 (syz-executor.1) thread 0xffff800020ac1160 (268839)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82651ec8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
exclusive mutex shmpl r = 0 (0xffffffff8263a130)
#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 pool_get+0xbf sys/kern/subr_pool.c:578
#4 shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:405
#5 sys_shmget+0x13f sys/kern/sysv_shm.c:468
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
Process 72476 (syz-executor.0) thread 0xffff800020ac0290 (65752)
exclusive rwlock netlock r = 0 (0xffffffff824c24a8)
#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 sendit+0x52b sys/kern/uipc_syscalls.c:662
#4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#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
devbuf 9494 6469K 6982K 78643K 10731 0
pcb 13 8K 8K 78643K 25 0
rtable 108 3K 4K 78643K 229 0
ifaddr 54 12K 12K 78643K 60 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 1469 0
iov 0 0K 2K 78643K 2 0
mount 1 1K 1K 78643K 1 0
vnodes 1232 77K 77K 78643K 1272 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 4 0
VM map 2 1K 1K 78643K 2 0
sem 10 0K 0K 78643K 14 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 70 0
proc 59 63K 83K 78643K 447 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 12 0
in_multi 29 1K 2K 78643K 41 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 42 185K 185K 78643K 42 0
exec 0 0K 1K 78643K 211 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 117 22K 26K 78643K 1164 0
UVM aobj 2 2K 2K 78643K 4 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 2 0
NDP 8 0K 0K 78643K 13 0
temp 83 3009K 3073K 78643K 6739 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 6 0 0 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 25 0 23 1 0 1 1 0
8 0
rtentry 112 53 0 9 2 0 2 2 0
8 0
unpcb 120 43 0 32 1 0 1 1 0
8 0
syncache 264 4 0 4 1 1 0 1 0
8 0
tcpqe 32 256 0 256 1 0 1 1 0
8 1
tcpcb 544 40 0 36 1 0 1 1 0
8 0
inpcb 280 112 0 104 2 0 2 2 0
8 1
nd6 48 5 0 2 1 0 1 1 0
8 0
ppxss 1128 1 0 0 1 0 1 1 0
8 0
pffrag 232 3 0 2 1 0 1 1 0
482 0
pffrnode 88 3 0 2 1 0 1 1 0
8 0
pffrent 40 106 0 90 1 0 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 20 0 0 1 0 1 1 0
8 0
pfstkey 112 20 0 0 1 0 1 1 0
8 0
pfstate 328 20 0 0 2 0 2 2 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
art_heap4 256 249 0 45 14 0 14 14 0
8 0
art_table 32 250 0 45 2 0 2 2 0
8 0
art_node 16 52 0 11 1 0 1 1 0
8 0
sysvmsgpl 40 4 0 3 1 0 1 1 0
8 0
semupl 112 2 0 2 1 0 1 1 0
8 1
semapl 112 8 0 0 1 0 1 1 0
8 0
shmpl 112 2 0 2 1 0 1 1 0
8 1
pool(0xffffffff8263a120:shmpl): page inconsistency: page
0xfffffd8062243000; 34 on list, 0 missing, 35 items per page
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 1483 0 73 46 0 46 46 0
8 0
ffsino 272 1483 0 73 95 0 95 95 0
8 0
nchpl 144 1771 0 149 61 0 61 61 0
8 0
uvmvnodes 72 1568 0 0 29 0 29 29 0
8 0
vnodes 208 1568 0 0 83 0 83 83 0
8 0
namei 1024 4705 0 4705 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scxspl 192 5224 0 5224 2 1 1 2 0
8 1
plimitpl 152 17 0 9 1 0 1 1 0
8 0
sigapl 432 269 0 253 3 0 3 3 0
8 1
futexpl 56 907 0 907 1 0 1 1 0
8 1
knotepl 112 57 0 38 1 0 1 1 0
8 0
kqueuepl 104 10 0 8 1 0 1 1 0
8 0
pipepl 160 178 0 157 1 0 1 1 0
8 0
fdescpl 488 270 0 253 3 0 3 3 0
8 0
filepl 152 1563 0 1450 5 0 5 5 0
8 0
lockfpl 104 17 0 16 1 0 1 1 0
8 0
lockfspl 48 6 0 5 1 0 1 1 0
8 0
sessionpl 112 18 0 7 1 0 1 1 0
8 0
pgrppl 48 18 0 7 1 0 1 1 0
8 0
ucredpl 96 111 0 102 1 0 1 1 0
8 0
zombiepl 144 253 0 253 1 0 1 1 0
8 1
processpl 896 286 0 253 4 0 4 4 0
8 0
procpl 632 386 0 342 5 0 5 5 0
8 1
sosppl 128 3 0 3 1 0 1 1 0
8 1
sockpl 384 180 0 159 4 0 4 4 0
8 1
mcl64k 65536 1 0 0 1 0 1 1 0
8 0
mcl12k 12288 2 0 0 1 0 1 1 0
8 0
mcl8k 8192 1 0 0 1 0 1 1 0
8 0
mcl4k 4096 5 0 0 1 0 1 1 0
8 0
mcl2k 2048 171 0 0 21 0 21 21 0
8 0
mtagpl 80 4 0 0 1 0 1 1 0
8 0
mbufpl 256 378 0 0 24 0 24 24 0
8 0
bufpl 280 6330 0 1344 357 0 357 357 0
8 0
anonpl 16 48917 0 29820 90 1 89 89 0 125
12
amapchunkpl 152 1405 0 1245 8 0 8 8 0
158 1
amappl16 192 1502 0 454 62 4 58 62 0
8 5
amappl15 184 77 0 72 1 0 1 1 0
8 0
amappl14 176 31 0 30 1 0 1 1 0
8 0
amappl13 168 20 0 17 1 0 1 1 0
8 0
amappl12 160 2 0 1 2 1 1 1 0
8 0
amappl11 152 59 0 44 1 0 1 1 0
8 0
amappl10 144 16 0 12 1 0 1 1 0
8 0
amappl9 136 605 0 601 1 0 1 1 0
8 0
amappl8 128 125 0 101 1 0 1 1 0
8 0
amappl7 120 111 0 98 1 0 1 1 0
8 0
amappl6 112 57 0 50 1 0 1 1 0
8 0
amappl5 104 129 0 115 1 0 1 1 0
8 0
amappl4 96 521 0 488 2 1 1 2 0
8 0
amappl3 88 118 0 111 1 0 1 1 0
8 0
amappl2 80 1298 0 1212 3 1 2 3 0
8 0
amappl1 72 16281 0 15822 25 11 14 20 0
8 4
amappl 80 638 0 590 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 3 0 2 1 0 1 1 0
8 0
uaddrrnd 24 270 0 253 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 270 0 253 1 0 1 1 0
8 0
vmmpekpl 168 6046 0 6013 2 0 2 2 0
8 0
vmmpepl 168 42468 0 40144 137 5 132 132 0 357
30
vmsppl 368 269 0 253 2 0 2 2 0
8 0
pdppl 4096 547 0 506 6 0 6 6 0
8 0
pvpl 32 159731 0 137376 213 0 213 213 0 265
32
pmappl 232 269 0 253 2 0 2 2 0
8 1
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 175 0 3 5 0 5 5 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
Mar 4, 2020, 6:09:09 PM3/4/20
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.
Reply all
Reply to author
Forward
0 new messages