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| author | Jinjie Ruan <ruanjinjie@huawei.com> | 2026-07-29 09:29:47 +0800 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2026-07-31 17:32:23 +0530 |
| commit | 761eda315a6e1fda3e8e2185b28430771fb1ac29 (patch) | |
| tree | e08cd8e0f673a26fc54d3e69619aa98e71c21aa9 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | 4cc4b586007fbbf8edba4f1d0849e9a06b0cf6c3 (diff) | |
powerpc/kexec_file: Fix null-ptr-def in extra size calculation
A static Sashiko AI review identified a potential NULL pointer
dereference in kexec_extra_fdt_size_ppc64().
On platforms without any reserved memory regions,
get_reserved_memory_ranges() can return 0 while leaving 'rmem'
unallocated as NULL. Passing it directly leads to a kernel panic when
evaluating 'rmem->nr_ranges'.
Add a NULL check for 'rmem' to prevent this crash.
Cc: stable@vger.kernel.org
Fixes: 0d3ff067331e ("powerpc/kexec_file: fix extra size calculation for kexec FDT")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260729012948.2797865-3-ruanjinjie@huawei.com
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions