/*
 *	fs/bfs/bfs.h
 *	Copyright (C) 1999 Tigran Aivazian <tigran@veritas.com>
 */
#ifndef _FS_BFS_BFS_H
#define _FS_BFS_BFS_H

#include <linux/bfs_fs.h>

/*
 * BFS file system in-core superblock info
 */
struct bfs_sb_info {
	unsigned long si_blocks;
	unsigned long si_freeb;
	unsigned long si_freei;
	unsigned long si_lf_eblk;
	unsigned long si_lasti;
	unsigned long *si_imap;
	struct mutex bfs_lock;
};

/*
 * BFS file system in-core inode info
 */
struct bfs_inode_info {
	unsigned long i_dsk_ino; /* inode number from the disk, can be 0 */
	unsigned long i_sblock;
	unsigned long i_eblock;
	struct inode vfs_inode;
};

static inline struct bfs_sb_info *BFS_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

static inline struct bfs_inode_info *BFS_I(struct inode *inode)
{
	return container_of(inode, struct bfs_inode_info, vfs_inode);
}


#define printf(format, args...) \
	printk(KERN_ERR "BFS-fs: %s(): " format, __func__, ## args)

/* inode.c */
extern struct inode *bfs_iget(struct super_block *sb, unsigned long ino);
extern void bfs_dump_imap(const char *, struct super_block *);

/* file.c */
extern const struct inode_operations bfs_file_inops;
extern const struct file_operations bfs_file_operations;
extern const struct address_space_operations bfs_aops;

/* dir.c */
extern const struct inode_operations bfs_dir_inops;
extern const struct file_operations bfs_dir_operations;

#endif /* _FS_BFS_BFS_H */
lass='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>arch</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/arm64?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>arm64</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/arm64/util?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>util</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/arm64/util/Build?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>Build</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Peter Zijlstra &lt;peterz@infradead.org&gt;</td><td class='right'>2017-01-26 16:39:55 +0100</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-01-30 11:41:25 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/arm64/util/Build?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>a76a82a3e38c8d3fb6499e3dfaeb0949241ab588</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/arch/arm64/util/Build?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>patch</a>)</td></tr>
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<div class='commit-subject'>perf/core: Fix use-after-free bug</div><div class='commit-msg'>Dmitry reported a KASAN use-after-free on event-&gt;group_leader.

It turns out there's a hole in perf_remove_from_context() due to
event_function_call() not calling its function when the task
associated with the event is already dead.

In this case the event will have been detached from the task, but the
grouping will have been retained, such that group operations might
still work properly while there are live child events etc.

This does however mean that we can miss a perf_group_detach() call
when the group decomposes, this in turn can then lead to
use-after-free.

Fix it by explicitly doing the group detach if its still required.

Reported-by: Dmitry Vyukov &lt;dvyukov@google.com&gt;
Tested-by: Dmitry Vyukov &lt;dvyukov@google.com&gt;
Signed-off-by: Peter Zijlstra (Intel) &lt;peterz@infradead.org&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@kernel.org&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Jiri Olsa &lt;jolsa@redhat.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: stable@vger.kernel.org # v4.5+
Cc: syzkaller &lt;syzkaller@googlegroups.com&gt;
Fixes: 63b6da39bb38 ("perf: Fix perf_event_exit_task() race")
Link: http://lkml.kernel.org/r/20170126153955.GD6515@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>Diffstat</a> (limited to 'tools/perf/arch/arm64/util/Build')</div><table summary='diffstat' class='diffstat'>