diff options
| author | Luka Gejak <luka.gejak@linux.dev> | 2026-04-01 11:22:42 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-02 08:23:49 -0700 |
| commit | f5df2990c364d1ac596d24b3118dbc56503f7cd4 (patch) | |
| tree | 6880b505f23185d5a0cf2a4e18cb057ead890203 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | b18c833888742ca9de80c250f9d40d0e97caa9f6 (diff) | |
net: hsr: serialize seq_blocks merge across nodes
During node merging, hsr_handle_sup_frame() walks node_curr->seq_blocks
to update node_real without holding node_curr->seq_out_lock. This
allows concurrent mutations from duplicate registration paths, risking
inconsistent state or XArray/bitmap corruption.
Fix this by locking both nodes' seq_out_lock during the merge.
To prevent ABBA deadlocks, locks are acquired in order of memory
address.
Reviewed-by: Felix Maurer <fmaurer@redhat.com>
Fixes: 415e6367512b ("hsr: Implement more robust duplicate discard for PRP")
Signed-off-by: Luka Gejak <luka.gejak@linux.dev>
Link: https://patch.msgid.link/20260401092243.52121-2-luka.gejak@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions