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net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294
[ Upstream commit e209fee ] With this commit, all the GIDs ("0 4294967294") can be written to the "net.ipv4.ping_group_range" sysctl. Note that 4294967295 (0xffffffff) is an invalid GID (see gid_valid() in include/linux/uidgid.h), and an attempt to register this number will cause -EINVAL. Prior to this commit, only up to GID 2147483647 could be covered. Documentation/networking/ip-sysctl.rst had "0 4294967295" as an example value, but this example was wrong and causing -EINVAL. Fixes: c319b4d ("net: ipv4: add IPPROTO_ICMP socket kind") Co-developed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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