ipv4: Check !in_dev earlier for ioctl(SIOCSIFADDR).
[ Upstream commit e3af3d3c5b26c33a7950e34e137584f6056c4319 ] dev->ip_ptr could be NULL if we set an invalid MTU. Even then, if we issue ioctl(SIOCSIFADDR) for a new IPv4 address, devinet_ioctl() allocates struct in_ifaddr and fails later in inet_set_ifa() because in_dev is NULL. Let's move the check earlier. Signed-off-by:Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20240809235406.50187-2-kuniyu@amazon.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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