https://github.com/torvalds/linux
Revision 6b7e633fe9c24682df550e5311f47fb524701586 authored by Steven Rostedt (VMware) on 23 December 2017, 01:38:57 UTC, committed by Steven Rostedt (VMware) on 27 December 2017, 19:20:59 UTC
The ring_buffer_read_page() takes care of zeroing out any extra data in the page that it returns. There's no need to zero it out again from the consumer. It was removed from one consumer of this function, but read_buffers_splice_read() did not remove it, and worse, it contained a nasty bug because of it. Cc: stable@vger.kernel.org Fixes: 2711ca237a084 ("ring-buffer: Move zeroing out excess in page to ring buffer code") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
1 parent 45d8b80
Tip revision: 6b7e633fe9c24682df550e5311f47fb524701586 authored by Steven Rostedt (VMware) on 23 December 2017, 01:38:57 UTC
tracing: Remove extra zeroing out of the ring buffer page
tracing: Remove extra zeroing out of the ring buffer page
Tip revision: 6b7e633
File | Mode | Size |
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ABI | ||
EDID | ||
PCI | ||
RCU | ||
accounting | ||
acpi | ||
admin-guide | ||
aoe | ||
arm | ||
arm64 | ||
auxdisplay | ||
backlight | ||
blackfin | ||
block | ||
blockdev | ||
bpf | ||
bus-devices | ||
cdrom | ||
cgroup-v1 | ||
cma | ||
connector | ||
console | ||
core-api | ||
cpu-freq | ||
cpuidle | ||
cris | ||
crypto | ||
dev-tools | ||
device-mapper | ||
devicetree | ||
doc-guide | ||
driver-api | ||
driver-model | ||
early-userspace | ||
extcon | ||
fault-injection | ||
fb | ||
features | ||
filesystems | ||
firmware_class | ||
fmc | ||
fpga | ||
frv | ||
gpio | ||
gpu | ||
hid | ||
hwmon | ||
i2c | ||
ia64 | ||
ide | ||
iio | ||
infiniband | ||
input | ||
ioctl | ||
isdn | ||
kbuild | ||
kdump | ||
kernel-hacking | ||
laptops | ||
leds | ||
lightnvm | ||
livepatch | ||
locking | ||
m68k | ||
md | ||
media | ||
memory-devices | ||
metag | ||
mic | ||
mips | ||
misc-devices | ||
mmc | ||
mn10300 | ||
mtd | ||
namespaces | ||
netlabel | ||
networking | ||
nfc | ||
nios2 | ||
nvdimm | ||
nvmem | ||
openrisc | ||
parisc | ||
pcmcia | ||
perf | ||
phy | ||
platform | ||
power | ||
powerpc | ||
pps | ||
process | ||
pti | ||
ptp | ||
rapidio | ||
s390 | ||
scheduler | ||
scsi | ||
security | ||
serial | ||
sh | ||
sound | ||
sparc | ||
sphinx | ||
sphinx-static | ||
spi | ||
sysctl | ||
target | ||
thermal | ||
timers | ||
trace | ||
translations | ||
usb | ||
userspace-api | ||
virtual | ||
vm | ||
w1 | ||
watchdog | ||
wimax | ||
x86 | ||
xtensa | ||
.gitignore | -rw-r--r-- | 13 bytes |
00-INDEX | -rw-r--r-- | 14.9 KB |
Changes | l--------- | 19 bytes |
CodingStyle | -rw-r--r-- | 48 bytes |
DMA-API-HOWTO.txt | -rw-r--r-- | 34.1 KB |
DMA-API.txt | -rw-r--r-- | 27.6 KB |
DMA-ISA-LPC.txt | -rw-r--r-- | 5.1 KB |
DMA-attributes.txt | -rw-r--r-- | 6.9 KB |
IPMI.txt | -rw-r--r-- | 29.7 KB |
IRQ-affinity.txt | -rw-r--r-- | 2.5 KB |
IRQ-domain.txt | -rw-r--r-- | 12.9 KB |
IRQ.txt | -rw-r--r-- | 994 bytes |
Intel-IOMMU.txt | -rw-r--r-- | 3.9 KB |
Makefile | -rw-r--r-- | 4.5 KB |
SAK.txt | -rw-r--r-- | 3.0 KB |
SM501.txt | -rw-r--r-- | 2.8 KB |
SubmittingPatches | -rw-r--r-- | 54 bytes |
atomic_bitops.txt | -rw-r--r-- | 1.3 KB |
atomic_t.txt | -rw-r--r-- | 5.5 KB |
bcache.txt | -rw-r--r-- | 23.7 KB |
bt8xxgpio.txt | -rw-r--r-- | 4.0 KB |
btmrvl.txt | -rw-r--r-- | 2.7 KB |
bus-virt-phys-mapping.txt | -rw-r--r-- | 8.0 KB |
cachetlb.txt | -rw-r--r-- | 17.2 KB |
cgroup-v2.txt | -rw-r--r-- | 70.4 KB |
circular-buffers.txt | -rw-r--r-- | 8.2 KB |
clearing-warn-once.txt | -rw-r--r-- | 224 bytes |
clk.txt | -rw-r--r-- | 11.6 KB |
conf.py | -rw-r--r-- | 19.1 KB |
cpu-load.txt | -rw-r--r-- | 3.0 KB |
cputopology.txt | -rw-r--r-- | 5.6 KB |
crc32.txt | -rw-r--r-- | 8.6 KB |
dcdbas.txt | -rw-r--r-- | 3.9 KB |
debugging-modules.txt | -rw-r--r-- | 954 bytes |
debugging-via-ohci1394.txt | -rw-r--r-- | 7.5 KB |
dell_rbu.txt | -rw-r--r-- | 5.1 KB |
digsig.txt | -rw-r--r-- | 3.0 KB |
docutils.conf | -rw-r--r-- | 158 bytes |
dontdiff | -rw-r--r-- | 2.5 KB |
efi-stub.txt | -rw-r--r-- | 3.3 KB |
eisa.txt | -rw-r--r-- | 7.6 KB |
errseq.rst | -rw-r--r-- | 6.2 KB |
flexible-arrays.txt | -rw-r--r-- | 5.6 KB |
futex-requeue-pi.txt | -rw-r--r-- | 5.1 KB |
gcc-plugins.txt | -rw-r--r-- | 2.9 KB |
highuid.txt | -rw-r--r-- | 2.6 KB |
hw_random.txt | -rw-r--r-- | 3.8 KB |
hwspinlock.txt | -rw-r--r-- | 12.5 KB |
index.rst | -rw-r--r-- | 2.7 KB |
intel_txt.txt | -rw-r--r-- | 10.3 KB |
io-mapping.txt | -rw-r--r-- | 3.3 KB |
io_ordering.txt | -rw-r--r-- | 2.0 KB |
iostats.txt | -rw-r--r-- | 8.1 KB |
irqflags-tracing.txt | -rw-r--r-- | 2.3 KB |
isa.txt | -rw-r--r-- | 5.1 KB |
isapnp.txt | -rw-r--r-- | 492 bytes |
kernel-doc-nano-HOWTO.txt | -rw-r--r-- | 10.3 KB |
kernel-per-CPU-kthreads.txt | -rw-r--r-- | 13.3 KB |
kobject.txt | -rw-r--r-- | 18.3 KB |
kprobes.txt | -rw-r--r-- | 29.4 KB |
kref.txt | -rw-r--r-- | 8.9 KB |
ldm.txt | -rw-r--r-- | 4.6 KB |
lockup-watchdogs.txt | -rw-r--r-- | 4.1 KB |
logo.gif | -rw-r--r-- | 16.0 KB |
logo.txt | -rw-r--r-- | 563 bytes |
lsm.txt | -rw-r--r-- | 10.5 KB |
lzo.txt | -rw-r--r-- | 7.9 KB |
mailbox.txt | -rw-r--r-- | 4.4 KB |
memory-barriers.txt | -rw-r--r-- | 112.9 KB |
memory-hotplug.txt | -rw-r--r-- | 18.6 KB |
men-chameleon-bus.txt | -rw-r--r-- | 5.7 KB |
nommu-mmap.txt | -rw-r--r-- | 12.4 KB |
ntb.txt | -rw-r--r-- | 10.8 KB |
numastat.txt | -rw-r--r-- | 1.0 KB |
padata.txt | -rw-r--r-- | 7.4 KB |
parport-lowlevel.txt | -rw-r--r-- | 37.1 KB |
percpu-rw-semaphore.txt | -rw-r--r-- | 1.1 KB |
phy.txt | -rw-r--r-- | 7.8 KB |
pi-futex.txt | -rw-r--r-- | 5.7 KB |
pnp.txt | -rw-r--r-- | 7.0 KB |
preempt-locking.txt | -rw-r--r-- | 5.6 KB |
printk-formats.txt | -rw-r--r-- | 13.4 KB |
pwm.txt | -rw-r--r-- | 6.2 KB |
rbtree.txt | -rw-r--r-- | 14.8 KB |
remoteproc.txt | -rw-r--r-- | 12.6 KB |
rfkill.txt | -rw-r--r-- | 5.0 KB |
robust-futex-ABI.txt | -rw-r--r-- | 8.7 KB |
robust-futexes.txt | -rw-r--r-- | 9.5 KB |
rpmsg.txt | -rw-r--r-- | 13.1 KB |
rtc.txt | -rw-r--r-- | 10.6 KB |
sgi-ioc4.txt | -rw-r--r-- | 2.1 KB |
siphash.txt | -rw-r--r-- | 6.3 KB |
smsc_ece1099.txt | -rw-r--r-- | 2.5 KB |
static-keys.txt | -rw-r--r-- | 13.0 KB |
svga.txt | -rw-r--r-- | 11.8 KB |
switchtec.txt | -rw-r--r-- | 3.6 KB |
sync_file.txt | -rw-r--r-- | 3.1 KB |
tee.txt | -rw-r--r-- | 5.2 KB |
this_cpu_ops.txt | -rw-r--r-- | 11.2 KB |
unaligned-memory-access.txt | -rw-r--r-- | 10.4 KB |
vfio-mediated-device.txt | -rw-r--r-- | 14.3 KB |
vfio.txt | -rw-r--r-- | 21.3 KB |
video-output.txt | -rw-r--r-- | 1.1 KB |
xillybus.txt | -rw-r--r-- | 17.6 KB |
xz.txt | -rw-r--r-- | 5.5 KB |
zorro.txt | -rw-r--r-- | 2.9 KB |
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