This is a note to let you know that I've just added the patch titled net: ipv6: unexport __init-annotated seg6_hmac_net_init() to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ipv6-unexport-__init-annotated-seg6_hmac_net_init.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 53ad46169fe2996fe1b623ba6c9c4fa33847876f Mon Sep 17 00:00:00 2001 From: YueHaibing <yuehaibing@xxxxxxxxxx> Date: Tue, 28 Jun 2022 11:31:34 +0800 Subject: net: ipv6: unexport __init-annotated seg6_hmac_net_init() From: YueHaibing <yuehaibing@xxxxxxxxxx> 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@xxxxxxxxxx> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220628033134.21088-1-yuehaibing@xxxxxxxxxx Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv6/seg6_hmac.c | 1 - 1 file changed, 1 deletion(-) --- a/net/ipv6/seg6_hmac.c +++ b/net/ipv6/seg6_hmac.c @@ -410,7 +410,6 @@ int __net_init seg6_hmac_net_init(struct return 0; } -EXPORT_SYMBOL(seg6_hmac_net_init); void seg6_hmac_exit(void) { Patches currently in stable-queue which might be from yuehaibing@xxxxxxxxxx are queue-5.4/net-ipv6-unexport-__init-annotated-seg6_hmac_net_init.patch