linux/include
Andrew Vagin 99593eb7ca tracing: Fix fields of struct trace_iterator that are zeroed by mistake
commit ed5467da0e upstream.

tracing_read_pipe zeros all fields bellow "seq". The declaration contains
a comment about that, but it doesn't help.

The first field is "snapshot", it's true when current open file is
snapshot. Looks obvious, that it should not be zeroed.

The second field is "started". It was converted from cpumask_t to
cpumask_var_t (v2.6.28-4983-g4462344), in other words it was
converted from cpumask to pointer on cpumask.

Currently the reference on "started" memory is lost after the first read
from tracing_read_pipe and a proper object will never be freed.

The "started" is never dereferenced for trace_pipe, because trace_pipe
can't have the TRACE_FILE_ANNOTATE options.

Link: http://lkml.kernel.org/r/1375463803-3085183-1-git-send-email-avagin@openvz.org

Signed-off-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-14 22:57:08 -07:00
..
acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-05-05 10:06:06 -07:00
asm-generic mm: allow arch code to control the user page table ceiling 2013-05-07 19:51:55 -07:00
crypto crypto: user - Fix lookup of algorithms with IV generator 2012-03-29 19:52:47 +08:00
drm drm/radeon: add new richland pci ids 2013-05-11 13:48:14 -07:00
keys keys: add a "logon" key type 2012-01-17 22:39:40 -06:00
linux tracing: Fix fields of struct trace_iterator that are zeroed by mistake 2013-08-14 22:57:08 -07:00
math-emu
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-05-14 11:23:37 -07:00
misc
mtd
net ipv6: call udp_push_pending_frames when uncorking a socket with AF_INET pending data 2013-07-28 16:26:02 -07:00
pcmcia
rdma infiniband: pass rdma_cm module to netlink_dump_start 2012-10-28 10:14:15 -07:00
rxrpc
scsi SCSI: libsas: fix taskfile corruption in sas_ata_qc_fill_rtf 2012-07-16 09:04:37 -07:00
sound ALSA: Add a reference counter to card instance 2012-11-17 13:16:13 -08:00
target target: Add link_magic for fabric allow_link destination target_items 2013-01-21 11:45:24 -08:00
trace xen/mmu: Use Xen specific TLB flush instead of the generic one. 2012-11-17 13:15:54 -08:00
video atmel_lcdfb: fix 16-bpp modes on older SOCs 2013-03-20 13:05:00 -07:00
xen xen/blkback: correctly respond to unknown, non-native requests 2013-04-05 10:04:18 -07:00
Kbuild