Reference in a new issue

Blame

Copy permalink

Reference in a new issue

Copy permalink

Xin Li (Intel) 06780dbaa9 selftests/x86: Add a test to detect infinite SIGTRAP handler loop ... commit f287822688 upstream. When FRED is enabled, if the Trap Flag (TF) is set without an external debugger attached, it can lead to an infinite loop in the SIGTRAP handler. To avoid this, the software event flag in the augmented SS must be cleared, ensuring that no single-step trap remains pending when ERETU completes. This test checks for that specific scenario—verifying whether the kernel correctly prevents an infinite SIGTRAP loop in this edge case when FRED is enabled. The test should _always_ pass with IDT event delivery, thus no need to disable the test even when FRED is not enabled. Signed-off-by: Xin Li (Intel) <xin@zytor.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Cc:stable@vger.kernel.org Link: https://lore.kernel.org/all/20250609084054.2083189-3-xin%40zytor.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2025-06-27 11:05:34 +01:00
..
fault-injection	docs: fault-injection: convert docs to ReST and rename to *.rst	2019-06-14 14:21:07 -06:00
ktest	ktest: Fix Test Failures Due to Missing LOG_FILE Directories	2025-05-02 07:43:58 +02:00
kunit	kunit: tool: Import missing importlib.abc	2022-02-23 12:03:04 +01:00
nvdimm	memremap: remove support for external pgmap refcounts	2022-08-17 14:23:43 +02:00
radix-tree	radix tree test suite: fix incorrect allocation size for pthreads	2023-08-16 18:21:58 +02:00
scatterlist	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
selftests	selftests/x86: Add a test to detect infinite SIGTRAP handler loop	2025-06-27 11:05:34 +01:00
vsock	vsock_diag_test: remove free_sock_stat() call in test_no_sockets	2021-10-15 17:21:34 -07:00