From: Randy Dunlap <rdunlap@infradead.org> stable inclusion from stable-v4.19.238 commit 0f3d824bd70a1303464d5e93ee3e7afe7832fe89 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBP714 CVE: CVE-2022-49100 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit fefb8a2a941338d871e2d83fbd65fbfa068857bd ] Eliminate anonymous module_init() and module_exit(), which can lead to confusion or ambiguity when reading System.map, crashes/oops/bugs, or an initcall_debug log. Give each of these init and exit functions unique driver-specific names to eliminate the anonymous names. Example 1: (System.map) ffffffff832fc78c t init ffffffff832fc79e t init ffffffff832fc8f8 t init Example 2: (initcall_debug log) calling init+0x0/0x12 @ 1 initcall init+0x0/0x12 returned 0 after 15 usecs calling init+0x0/0x60 @ 1 initcall init+0x0/0x60 returned 0 after 2 usecs calling init+0x0/0x9a @ 1 initcall init+0x0/0x9a returned 0 after 74 usecs Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Amit Shah <amit@kernel.org> Cc: virtualization@lists.linux-foundation.org Cc: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20220316192010.19001-3-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Tirui Yin <yintirui@huawei.com> Reviewed-by: yongqiang Liu <liuyongqiang13@huawei.com> --- drivers/char/virtio_console.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 46188d0a54b8..b6c966516946 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -2256,7 +2256,7 @@ static struct virtio_driver virtio_rproc_serial = { .remove = virtcons_remove, }; -static int __init init(void) +static int __init virtio_console_init(void) { int err; @@ -2293,7 +2293,7 @@ static int __init init(void) return err; } -static void __exit fini(void) +static void __exit virtio_console_fini(void) { reclaim_dma_bufs(); @@ -2303,8 +2303,8 @@ static void __exit fini(void) class_destroy(pdrvdata.class); debugfs_remove_recursive(pdrvdata.debugfs_dir); } -module_init(init); -module_exit(fini); +module_init(virtio_console_init); +module_exit(virtio_console_fini); MODULE_DEVICE_TABLE(virtio, id_table); MODULE_DESCRIPTION("Virtio console driver"); -- 2.22.0