]> git.itanic.dy.fi Git - linux-stable/commit
net: ipv6: unexport __init-annotated seg6_hmac_net_init()
authorYueHaibing <yuehaibing@huawei.com>
Tue, 28 Jun 2022 03:31:34 +0000 (11:31 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 7 Jul 2022 15:31:17 +0000 (17:31 +0200)
commitcfd8430c5ee6a240836beb78c297ee27406f0458
tree6c44e805fa8d1023e195c7a5c8cdb582c52980e4
parentde393720483dd30157a7683c1e859b03d65cd2ff
net: ipv6: unexport __init-annotated seg6_hmac_net_init()

commit 53ad46169fe2996fe1b623ba6c9c4fa33847876f upstream.

As of commit 5801f064e351 ("net: ipv6: unexport __init-annotated seg6_hmac_init()"),
EXPORT_SYMBOL and __init is a bad combination because the .init.text
section is freed up after the initialization. Hence, modules cannot
use symbols annotated __init. The access to a freed symbol may end up
with kernel panic.

This remove the EXPORT_SYMBOL to fix modpost warning:

WARNING: modpost: vmlinux.o(___ksymtab+seg6_hmac_net_init+0x0): Section mismatch in reference from the variable __ksymtab_seg6_hmac_net_init to the function .init.text:seg6_hmac_net_init()
The symbol seg6_hmac_net_init is exported and annotated __init
Fix this by removing the __init annotation of seg6_hmac_net_init or drop the export.

Fixes: bf355b8d2c30 ("ipv6: sr: add core files for SR HMAC support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20220628033134.21088-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/ipv6/seg6_hmac.c