On 09/28/2016 01:37 PM, Kirill Tkhai wrote:
> Supress stack printing on loading vzvirtio_balloon module.
> It's out of tree and unsigned:
>
> Hardware name: Virtuozzo KVM, BIOS seabios-1.7.5-11.vz7.3 04/01/2014
> ffffc900003d4748 0000000095120796 ffff88007accfcf8 ffffffff81632398
> ffff88007accfd10 ffffffff8107b0e1 ffff88007accfef0 ffff88007accfd88
> ffffffff810fcc4e 0000000000000000 0000000000000000 0000000000000000
> Call Trace:
> [<ffffffff81632398>] dump_stack+0x19/0x1b
> [<ffffffff8107b0e1>] add_taint+0x51/0x60
> [<ffffffff810fcc4e>] layout_and_allocate+0xa8e/0xcc0
> [<ffffffff810fcf52>] load_module+0xd2/0x1b60
> [<ffffffff811f9495>] ? vfs_read+0xf5/0x170
> [<ffffffff811ff720>] ? kernel_read+0x50/0x80
> [<ffffffff810fa19b>] ? copy_module_from_fd.isra.44+0x5b/0x150
> [<ffffffff810feb86>] SyS_finit_module+0xa6/0xd0
> [<ffffffff81642cc9>] system_call_fastpath+0x16/0x1b
> vzvirtio_balloon: module verification failed: signature and/or required key
> missing - tainting kernel
>
> https://jira.sw.ru/browse/PSBM-52719
>
> Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
Reviewed-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
> ---
> kernel/panic.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/kernel/panic.c b/kernel/panic.c
> index 239a05e..082a400 100644
> --- a/kernel/panic.c
> +++ b/kernel/panic.c
> @@ -296,7 +296,8 @@ void add_taint(unsigned flag, enum lockdep_ok lockdep_ok)
> "Disabling lock debugging due to kernel taint\n");
>
> /* Do not confuse people with calltraces on proprietary modules */
> - if (flag != TAINT_PROPRIETARY_MODULE) {
> + if (flag != TAINT_PROPRIETARY_MODULE && flag != TAINT_OOT_MODULE &&
> + flag != TAINT_UNSIGNED_MODULE) {
> printk(KERN_WARNING "Tainting kernel with flag 0x%x\n", flag);
> dump_stack();
> }
>
_______________________________________________
Devel mailing list
Devel@openvz.org
https://lists.openvz.org/mailman/listinfo/devel
