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1ad84a151a
The context info allows continuing DUMP requests, shall they fill the netlink buffer. In the case of filtered DUMP requests, a reference on the netdev is grabbed in the .start() callback and release in .done(). Unfiltered DUMP request don't need the dev pointer to be set in the context info, doing so will trigger an unwanted netdev_put() in .done(). Reported-by: syzbot+e9ed4e4368d450c8f9db@syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/000000000000d3bf150621d361a7@google.com/ Fixes: 17194be4c8e1 ("net: ethtool: Introduce a command to list PHYs on an interface") Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Link: https://patch.msgid.link/20240913100515.167341-1-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>