From: Oleg Nesterov <oleg@redhat.com>
Date: Mon, 28 Jan 2013 16:08:47 +0000 (+0100)
Subject: uprobes/tracing: Ensure inode != NULL in create_trace_uprobe()
X-Git-Tag: v3.9-rc1~173^2~2^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e4e28c53963e6cfa94d8109bb8f5233c5659048;p=pandora-kernel.git

uprobes/tracing: Ensure inode != NULL in create_trace_uprobe()

probe_event_enable/disable() check tu->inode != NULL at the start.
This is ugly, if igrab() can fail create_trace_uprobe() should not
succeed and "postpone" the failure.

And S_ISREG(inode->i_mode) check added by d24d7dbf is not safe.

Note: alloc_uprobe() should probably check igrab() != NULL as well.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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