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| author | Eric Dumazet <[email protected]> | 2024-05-31 13:26:32 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2024-06-03 18:50:08 -0700 |
| commit | 2fe40483ec257de2a0d819ef88e3e76c7e261319 (patch) | |
| tree | 97a6c57c63ab893b3bf05825d7c9b3bb23927a71 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | ffbe335b8d471f79b259e950cb20999700670456 (diff) | |
ipv6: ioam: block BH from ioam6_output()
As explained in commit 1378817486d6 ("tipc: block BH
before using dst_cache"), net/core/dst_cache.c
helpers need to be called with BH disabled.
Disabling preemption in ioam6_output() is not good enough,
because ioam6_output() is called from process context,
lwtunnel_output() only uses rcu_read_lock().
We might be interrupted by a softirq, re-enter ioam6_output()
and corrupt dst_cache data structures.
Fix the race by using local_bh_disable() instead of
preempt_disable().
Fixes: 8cb3bf8bff3c ("ipv6: ioam: Add support for the ip6ip6 encapsulation")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Justin Iurman <[email protected]>
Acked-by: Paolo Abeni <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions