linux.git/kernel/trace/remote_test.c, branch v7.1-rc4 Linux kernel source tree tracing: Fix desc in error path for the trace remote test module 2026-05-16T20:11:04+00:00 Vincent Donnefort vdonnefort@google.com 2026-05-15T20:16:16+00:00 55a0005518195fdea1fd2991b07644f8dc97ea8e During initialisation in remote_test_load(), if one of the simple_ring_buffer fails to initialise, the error path attempts to rollback initialised buffers. However, the rollback incorrectly uses the global pointer to the trace descriptor, which is only set upon successful load completion. Fix the error path by using the local pointer to the descriptor. Link: https://patch.msgid.link/20260515201616.337469-1-vdonnefort@google.com Fixes: ea908a2b79c8 ("tracing: Add a trace remote module for testing") Reported-by: Sashiko <sashiko-bot@kernel.org> Signed-off-by: Vincent Donnefort <vdonnefort@google.com> base-commit: 5d6919055dec134de3c40167a490f33c74c12581 Signed-off-by: Steven Rostedt <rostedt@goodmis.org> 
During initialisation in remote_test_load(), if one of the
simple_ring_buffer fails to initialise, the error path attempts to
rollback initialised buffers. However, the rollback incorrectly uses the
global pointer to the trace descriptor, which is only set upon
successful load completion. Fix the error path by using the local
pointer to the descriptor.

Link: https://patch.msgid.link/20260515201616.337469-1-vdonnefort@google.com
Fixes: ea908a2b79c8 ("tracing: Add a trace remote module for testing")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>

base-commit: 5d6919055dec134de3c40167a490f33c74c12581
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
tracing: Add a trace remote module for testing 2026-03-09T16:33:55+00:00 Vincent Donnefort vdonnefort@google.com 2026-03-09T16:25:00+00:00 ea908a2b79c84279f06d6c4fa19bf45f113a34d0 Add a module to help testing the tracefs support for trace remotes. This module: * Use simple_ring_buffer to write into a ring-buffer. * Declare a single "selftest" event that can be triggered from user-space. * Register a "test" trace remote. This is intended to be used by trace remote selftests. Link: https://patch.msgid.link/20260309162516.2623589-15-vdonnefort@google.com Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Vincent Donnefort <vdonnefort@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> 
Add a module to help testing the tracefs support for trace remotes. This
module:

  * Use simple_ring_buffer to write into a ring-buffer.
  * Declare a single "selftest" event that can be triggered from
    user-space.
  * Register a "test" trace remote.

This is intended to be used by trace remote selftests.

Link: https://patch.msgid.link/20260309162516.2623589-15-vdonnefort@google.com
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>