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| author | Kyle Zeng <zengyhkyle@gmail.com> | 2023-09-15 08:12:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-17 17:14:58 +0300 |
| commit | 0113d9c9d1ccc07f5a3710dac4aa24b6d711278c (patch) | |
| tree | 617a53dcdcbb3f983b0ef70f17a4e1fced5c86b0 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | cb47b1f679c4d83a5fa5f1852e472f844e41a3da (diff) | |
| download | linux-0113d9c9d1ccc07f5a3710dac4aa24b6d711278c.tar.xz | |
ipv4: fix null-deref in ipv4_link_failure
Currently, we assume the skb is associated with a device before calling
__ip_options_compile, which is not always the case if it is re-routed by
ipvs.
When skb->dev is NULL, dev_net(skb->dev) will become null-dereference.
This patch adds a check for the edge case and switch to use the net_device
from the rtable when skb->dev is NULL.
Fixes: ed0de45a1008 ("ipv4: recompile ip options in ipv4_link_failure")
Suggested-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Kyle Zeng <zengyhkyle@gmail.com>
Cc: Stephen Suryaputra <ssuryaextr@gmail.com>
Cc: Vadim Fedorenko <vfedorenko@novek.ru>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions