tracing: Fix some alloc_event_probe() error handling bugs

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There are two bugs in this code.  First, if the kzalloc() fails it leads
to a NULL dereference of "ep" on the next line.  Second, if the
alloc_event_probe() function returns an error then it leads to an
error pointer dereference in the caller.

Link: https://lkml.kernel.org/r/20210824115150.GI31143@kili

Fixes: 7491e2c442 ("tracing: Add a probe that attaches to trace events")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Dan Carpenter 2021-08-24 14:51:50 +03:00 • committed by Steven Rostedt (VMware)

parent 54357f0c91

commit 5615e088b4

1 changed files with 3 additions and 2 deletions

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kernel/trace/trace_eprobe.c

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