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(parent: 8273a23) | patch
trace: fix potenial dangerous pointer
authorHui Su <sh_def@163.com>
Tue, 24 Nov 2020 16:52:05 +0000 (00:52 +0800)
committerJan Kara <jack@suse.cz>
Wed, 25 Nov 2020 12:03:44 +0000 (13:03 +0100)
commit49b156673378ade343550a125be80c8d18c03557
tree67592e638b795f71d5332a85fe2ad11f1d32b98ctree | snapshot
parent8273a23e0eea294a9c91ab0fdf04a82f462b2f92commit | diff
trace: fix potenial dangerous pointer

The bdi_dev_name() returns a char [64], and
the __entry->name is a char [32].

It maybe dangerous to TP_printk("%s", __entry->name)
after the strncpy().

CC: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20201124165205.GA23937@rlk
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Hui Su <sh_def@163.com>
Signed-off-by: Jan Kara <jack@suse.cz>
include/trace/events/writeback.h diff | blob | history
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