New subject: [PATCH v3] gpio: cdev: sanitize the label before requesting the interrupt

2 Apr 2024


      Results from Linaro���s test farm.
Regressions on arm64, arm, x86_64, and i386 with libgpiod tests.
libgpiod test regressions noticed on Linux stable-rc 6.8, 6.7 and 6.6
and Linux next and mainline master v6.9-rc2.
Anders bisected and found this first bad commit,
  gpio: cdev: sanitize the label before requesting the interrupt
  commit b34490879baa847d16fc529c8ea6e6d34f004b38 upstream.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
LKFT is running libgpiod test suite version
  v2.0.1-0-gae275c3 (and also tested v2.1)
libgpiod
  - _gpiod_edge-event_edge_event_wait_timeout
  - _gpiod_edge-event_event_copy
  - _gpiod_edge-event_null_buffer
  - _gpiod_edge-event_read_both_events
  - _gpiod_edge-event_read_both_events_blocking
  - _gpiod_edge-event_read_falling_edge_event
  - _gpiod_edge-event_read_rising_edge_event
  - _gpiod_edge-event_read_rising_edge_event_polled
  - _gpiod_edge-event_reading_more_events_than_the_queue_contains_doesnt_block
  - _gpiod_edge-event_seqno
  - _gpiod_line-info_edge_detection_settings
Test log:
-------
ok 16 /gpiod/edge-event/edge_event_buffer_max_capacity
**
gpiod-test:ERROR:tests-edge-event.c:52:_gpiod_test_func_edge_event_wait_timeout: '_request' should not be NULL
# gpiod-test:ERROR:tests-edge-event.c:52:_gpiod_test_func_edge_event_wait_timeout: '_request' should not be NULL
not ok 17 /gpiod/edge-event/edge_event_wait_timeout
ok 18 /gpiod/edge-event/cannot_request_lines_in_output_mode_with_edge_detection
**
gpiod-test:ERROR:tests-edge-event.c:125:_gpiod_test_func_read_both_events: '_request' should not be NULL
# gpiod-test:ERROR:tests-edge-event.c:125:_gpiod_test_func_read_both_events: '_request' should not be NULL
not ok 19 /gpiod/edge-event/read_both_events
Steps to reproduce:
-----
https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2eUlyN8HN4R...
Links:
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/tes...
 - https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.9-rc2/test...
 - https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2eUlyN8HN4R...
 - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.8.y/build/v6.8.2-...
 - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.7.y/build/v6.7.11...
 - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.23...
--
Linaro LKFT
https://lkft.linaro.org

Re: [PATCH v3] gpio: cdev: sanitize the label before requesting the interrupt

Test log:

Steps to reproduce: