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ext4: fix NULL pointer dereference in print_daily_error_info()

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Fix NULL pointer dereference in print_daily_error_info, when   
called on unmounted fs (EXT4_SB(sb) returns NULL), by removing error 
reporting timer in ext4_put_super.

Google-Bug-Id: 3017663

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Sergey Senozhatsky 2010-10-27 21:30:04 -04:00 committed by Theodore Ts'o
parent 53fdcf992d
commit a1c6c5698d
1 changed files with 1 additions and 0 deletions
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fs/ext4/super.c
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@ -719,6 +719,7 @@ static void ext4_put_super(struct super_block *sb)
ext4_abort(sb, "Couldn't clean up the journal");
}
del_timer(&sbi->s_err_report);
ext4_release_system_zone(sb);
ext4_mb_release(sb);
ext4_ext_release(sb);