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| author | Sagi Maimon <[email protected]> | 2025-05-14 07:35:41 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2025-05-16 22:43:44 +0000 |
| commit | c9e455581e2ba87ee38c126e8dc49a424b9df0cf (patch) | |
| tree | d732dca2d1eb62d147579bffaad058b06484cd84 /tools/testing/selftests/net/lib/py/netns.py | |
| parent | Merge tag 'for-net-2025-05-15' of git://git.kernel.org/pub/scm/linux/kernel/g... (diff) | |
| download | kernel-c9e455581e2ba87ee38c126e8dc49a424b9df0cf.tar.gz kernel-c9e455581e2ba87ee38c126e8dc49a424b9df0cf.zip | |
ptp: ocp: Limit signal/freq counts in summary output functions
The debugfs summary output could access uninitialized elements in
the freq_in[] and signal_out[] arrays, causing NULL pointer
dereferences and triggering a kernel Oops (page_fault_oops).
This patch adds u8 fields (nr_freq_in, nr_signal_out) to track the
number of initialized elements, with a maximum of 4 per array.
The summary output functions are updated to respect these limits,
preventing out-of-bounds access and ensuring safe array handling.
Widen the label variables because the change confuses GCC about
max length of the strings.
Fixes: ef61f5528fca ("ptp: ocp: add Adva timecard support")
Signed-off-by: Sagi Maimon <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Reviewed-by: Vadim Fedorenko <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/testing/selftests/net/lib/py/netns.py')
0 files changed, 0 insertions, 0 deletions