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Oleg Nesterov 4af4206be2 tracing: Fix syscall_*regfunc() vs copy_process() race 
syscall_regfunc() and syscall_unregfunc() should set/clear
TIF_SYSCALL_TRACEPOINT system-wide, but do_each_thread() can race
with copy_process() and miss the new child which was not added to
the process/thread lists yet.

Change copy_process() to update the child's TIF_SYSCALL_TRACEPOINT
under tasklist.

Link: http://lkml.kernel.org/p/20140413185854.GB20668@redhat.com

Cc: stable@vger.kernel.org # 2.6.33
Fixes: a871bd33a6 "tracing: Add syscall tracepoints"
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
 		2014-06-21 00:15:12 -04:00
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acpi Merge branch 'acpi-video' 2014-06-03 23:12:37 +02:00
asm-generic Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-06-12 19:18:49 -07:00
clocksource
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crypto crypto: hash - Add real ahash walk interface 2014-05-21 20:56:12 +08:00
drm Merge branch 'drm-next-3.16' of git://people.freedesktop.org/~agd5f/linux into drm-next 2014-06-10 13:09:01 +10:00
dt-bindings Merge branch 'for-v3.16/ti-clk-drv' of github.com:t-kristo/linux-pm into clk-next 2014-06-10 16:53:25 -07:00
keys
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kvm
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linux Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-15 16:37:03 -10:00
math-emu
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media Merge branch 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-06-12 23:04:28 -07:00
memory
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misc
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net udp: call __skb_checksum_complete when doing full checksum 2014-06-15 01:00:49 -07:00
pcmcia
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ras
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rdma Merge branches 'core', 'cxgb3', 'cxgb4', 'iser', 'iwpm', 'misc', 'mlx4', 'mlx5', 'noio', 'ocrdma', 'qib', 'srp' and 'usnic' into for-next 2014-06-10 10:12:14 -07:00
rxrpc
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scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-06-12 22:38:32 -07:00
sound ALSA: core: Use ktime_get_ts() 2014-06-12 12:58:16 +02:00
target target: Report correct response length for some commands 2014-06-11 12:15:30 -07:00
trace tracing: Fix syscall_*regfunc() vs copy_process() race 2014-06-21 00:15:12 -04:00
uapi Merge git://git.infradead.org/users/willy/linux-nvme 2014-06-15 15:58:03 -10:00
video Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-06-12 11:32:30 -07:00
xen Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
Kbuild
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