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| author | Mikhail Zaslonko <zaslonko@linux.ibm.com> | 2026-09-16 18:06:26 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2026-09-22 12:38:01 +0200 |
| commit | 012bfcd5a51082d5a65f096dfb9ca652b5267965 (patch) | |
| tree | a63562184a49d822e540995712208e6bab171915 /tools/perf/scripts/python/task-analyzer.py | |
| parent | 28e29992b034acffc9342df216c06097825ce610 (diff) | |
| download | linux-next-012bfcd5a51082d5a65f096dfb9ca652b5267965.tar.gz linux-next-012bfcd5a51082d5a65f096dfb9ca652b5267965.zip | |
s390/debug: Fix NULL pointer dereference in debug_info_copy()
When debug_register_static() fails, it clears areas, active_pages and
active_entries but leaves the area bounds unchanged. Copying such an
area, either by opening its view file or via debug_dump(), makes
debug_info_copy() dereference the NULL pointers.
Skip the copy loop when the source has no areas.
Closes: https://lore.kernel.org/r/20260903132123.12F271F00A3F@smtp.kernel.org
Fixes: d72541f94512 ("s390/debug: add early tracing support")
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions