Public bug reported:
[ Impact ]
The patch to CVE-2024-27397 introduces a compile-time warning in both
Bionic and Xenial GA kernels:
In file included from /build/bionic/include/linux/kernel.h:13:0,
from /build/bionic/include/linux/list.h:9,
from /build/bionic/include/linux/module.h:9,
from /build/bionic/net/bridge/netfilter/nf_tables_bridge.c:13:
/build/bionic/include/net/netfilter/nf_tables.h: In function
'__nft_set_elem_expired':
/build/bionic/include/linux/typecheck.h:12:18: warning: comparison of distinct
pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
/build/bionic/include/linux/jiffies.h:139:3: note: in expansion of macro
'typecheck'
typecheck(__u64, b) && \
^~~~~~~~~
/build/bionic/include/net/netfilter/nf_tables.h:627:9: note: in expansion of
macro 'time_after_eq64'
time_after_eq64(tstamp, *nft_set_ext_expiration(ext));
The warning can be solved by backporting 8e1102d5a1596d from mainline.
[ Test Plan ]
To reproduce the warning it is possible to compile Xenial and Bionic GA
kernels.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Massimiliano Pellizzer (mpellizzer)
Status: Confirmed
** Affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2090990
Title:
Compile warning in Xenial and Bionic GA kernels
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