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jffs2: remove from wait queue after schedule()

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@wait is a local variable, so if we don't remove it from the wait queue
list, later wake_up() may end up accessing invalid memory.

This was spotted by eyes.

Signed-off-by: Li Zefan <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Artem Bityutskiy <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Brian Norris <[email protected]>
This commit is contained in:
Li Zefan 2014-02-12 12:44:57 -08:00 • committed by Brian Norris
commit 3ead957844
1 changed files with 1 additions and 0 deletions
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1
fs/jffs2/nodemgmt.c
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@ -179,6 +179,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
spin_unlock(&c->erase_completion_lock);
schedule();
remove_wait_queue(&c->erase_wait, &wait);
} else
spin_unlock(&c->erase_completion_lock);
} else if (ret)