[PATCH 0/9] coresight: Fix assorted bugs reported by Sashiko

[James Clark]

Small fixes for bugs in the CoreSight drivers that were found by
Sashiko. Mostly reference and resource leaks on error paths, plus a
deadlock, a missing lock, and a sysfs store that should return -EBUSY
while a sysfs session is enabled.

This series depends on "coresight: Prevent per-thread events from
sharing a sink" v4 [1]. That series takes coresight_mutex for perf AUX
setup and adds coresight_release_path_locked(), which the
etm_setup_aux() and coresight_build_path() fixes here are based on.

[1]: https://lore.kernel.org/r/20261016-james-cs-multiple-per-threads-v4-0-dedf961aca0e@xxxxxxxxxx/

Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
---
James Clark (9):
      coresight: cpu-debug: Fix PM usage counter leak in debug_enable_func()
      coresight: etm4x: Remove perf symlink if config registration fails
      coresight: etm4x: Fix truncation of nr_ext_inp
      coresight: etm-perf: Fix sink device reference leak in etm_setup_aux()
      coresight: syscfg: Take csdev lock when removing owned features
      coresight: syscfg: Fix deadlock in cscfg_create_device() error path
      coresight: Fix resource leaks on coresight_build_path() errors
      coresight: etm3x: Don't ignore etm_parse_event_config() errors
      coresight: etm3x: Prohibit modifying seq_curr_state while session is enabled

 drivers/hwtracing/coresight/coresight-core.c        | 6 ++++--
 drivers/hwtracing/coresight/coresight-cpu-debug.c   | 4 ++--
 drivers/hwtracing/coresight/coresight-etm-perf.c    | 4 ++++
 drivers/hwtracing/coresight/coresight-etm3x-core.c  | 6 +++++-
 drivers/hwtracing/coresight/coresight-etm3x-sysfs.c | 5 +++++
 drivers/hwtracing/coresight/coresight-etm4x-core.c  | 1 +
 drivers/hwtracing/coresight/coresight-etm4x.h       | 2 +-
 drivers/hwtracing/coresight/coresight-syscfg.c      | 8 +++++++-
 8 files changed, 29 insertions(+), 7 deletions(-)
---
base-commit: 343cfcbb3ecfdb80aa576a428cfa3b65ad783842
change-id: 20261027-james-cs-sashiko-easy-fixes-1-692d80016a89
prerequisite-message-id: <20261016-james-cs-multiple-per-threads-v4-0-dedf961aca0e@xxxxxxxxxx>
prerequisite-patch-id: 81acda380ba25acd3845eb58d5ded812175b9631
prerequisite-patch-id: 430caddc9c87948d4e9a0d1967bf3d8a50bca06b
prerequisite-patch-id: 633377150141300f7578b265fcc02eba52e592a8
prerequisite-patch-id: 9a82ffe5d705ac1fdf1250ff6bf242cfcd9d8fbf
prerequisite-patch-id: cf211801575d6bd0aa7fc0f6e19c3b90cea446a0
prerequisite-patch-id: d22fee48bf4aa3e01536e4683ccd797b3dbe1c91
prerequisite-patch-id: 55eeffb37cae55a1f47c2827899e0512b47a6efa
prerequisite-patch-id: c542d74cd4bc76158d5872bab12b8bd7a00f0c27
prerequisite-patch-id: 71cd37ed83d3e01d7a0321cdfa5cfc5ee113fe7b
prerequisite-patch-id: 74c1e3ed6dba4e25bfd3c39f06d43b079eed45e1

Best regards,
--  
James Clark <james.clark@xxxxxxxxxx>