Messages in this thread Patch in this message | | | Date | Fri, 4 Jan 2013 14:12:05 -0500 | From | Josh Boyer <> | Subject | [PATCH] MODSIGN: Don't taint unless signature enforcing is enabled |
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With module signing enabled but not in enforcing mode, we don't consider unsigned modules to be an error. However, we only mark sig_ok as true if a signature verified. This causes the module to be tainted with the TAINT_FORCED_MODULE flag. That in turn taints the kernel, which also disables lockdep.
Tainting the module and kernel when we don't consider something to be an error seems excessive. This marks sig_ok as true if we aren't in enforcing mode.
Reported-by: Frank Ch. Eigler <fche@redhat.com> Signed-off-by: Josh Boyer <jwboyer@redhat.com> --- kernel/module.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/module.c b/kernel/module.c index 250092c..a50172e 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2443,8 +2443,10 @@ static int module_sig_check(struct load_info *info) if (err < 0 && fips_enabled) panic("Module verification failed with error %d in FIPS mode\n", err); - if (err == -ENOKEY && !sig_enforce) + if (err == -ENOKEY && !sig_enforce) { + info->sig_ok = true; err = 0; + } return err; } -- 1.8.0.1
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