Beau Belgrave cd98c93286 tracing/user_events: Ensure write index cannot be negative ... The write index indicates which event the data is for and accesses a per-file array. The index is passed by user processes during write() calls as the first 4 bytes. Ensure that it cannot be negative by returning -EINVAL to prevent out of bounds accesses. Update ftrace self-test to ensure this occurs properly. Link: https://lkml.kernel.org/r/20230425225107.8525-2-beaub@linux.microsoft.com Fixes: 7f5a08c79d ("user_events: Add minimal support for trace_event into ftrace") Reported-by: Doug Cook <dcook@linux.microsoft.com> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2023-04-25 21:03:46 -04:00
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abi_test.c	tracing/user_events: Add ABI self-test	2023-03-29 06:52:09 -04:00
dyn_test.c	selftests: use canonical ftrace path	2023-03-29 06:52:07 -04:00
ftrace_test.c	tracing/user_events: Ensure write index cannot be negative	2023-04-25 21:03:46 -04:00
Makefile	tracing/user_events: Add ABI self-test	2023-03-29 06:52:09 -04:00
perf_test.c	tracing/user_events: Update self-tests to write ABI	2023-03-29 06:52:08 -04:00
settings	user_events: Add self-test for ftrace integration	2022-02-10 22:37:47 -05:00