Beau Belgrave 0489c2b2c3 tracing/user_events: Ensure write index cannot be negative ... [ Upstream commit cd98c93286a30cc4588dfd02453bec63c2f4acf4 ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-11 23:03:32 +09:00
..
crypto/chacha20-s390	tools/testing/crypto: Use vzalloc instead of vmalloc+memset	2022-07-05 14:46:36 +02:00
cxl	tools/testing/cxl: Add a single-port host-bridge regression config	2022-11-04 16:01:24 -07:00
fault-injection
ktest	ktest.pl: Add RUN_TIMEOUT option with default unlimited	2023-03-10 09:34:27 +01:00
kunit	kunit: tool: Don't download risc-v opensbi firmware with wget	2022-10-07 10:16:28 -06:00
memblock	Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."	2023-02-22 12:59:50 +01:00
nvdimm	ndtest: Cleanup all of blk namespace specific code	2022-07-12 17:57:55 -07:00
radix-tree	maple_tree: fix write memory barrier of nodes once dead for RCU mode	2023-04-20 12:35:12 +02:00
scatterlist
selftests	tracing/user_events: Ensure write index cannot be negative	2023-05-11 23:03:32 +09:00
vsock	vsock_test: POLLIN + SO_RCVLOWAT test	2022-08-23 10:43:12 +02:00