apparmor: Switch to GFP_KERNEL where possible

After removing preempt_disable() from get_buffers() it is possible to
replace a few GFP_ATOMIC allocations with GFP_KERNEL.

Replace GFP_ATOMIC allocations with GFP_KERNEL where the context looks
to bee preepmtible.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>

diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index cae0e61..0da0b2b 100644 (file)
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -524,7 +524,7 @@ struct aa_label *x_table_lookup(struct aa_profile *profile, u32 xindex,
                                label = &new_profile->label;
                        continue;
                }
-               label = aa_label_parse(&profile->label, *name, GFP_ATOMIC,
+               label = aa_label_parse(&profile->label, *name, GFP_KERNEL,
                                       true, false);
                if (IS_ERR(label))
                        label = NULL;
@@ -604,7 +604,7 @@ static struct aa_label *x_to_label(struct aa_profile *profile,
                /* base the stack on post domain transition */
                struct aa_label *base = new;
 
-               new = aa_label_parse(base, stack, GFP_ATOMIC, true, false);
+               new = aa_label_parse(base, stack, GFP_KERNEL, true, false);
                if (IS_ERR(new))
                        new = NULL;
                aa_put_label(base);
@@ -712,7 +712,7 @@ static struct aa_label *profile_transition(struct aa_profile *profile,
                if (DEBUG_ON) {
                        dbg_printk("apparmor: scrubbing environment variables"
                                   " for %s profile=", name);
-                       aa_label_printk(new, GFP_ATOMIC);
+                       aa_label_printk(new, GFP_KERNEL);
                        dbg_printk("\n");
                }
                *secure_exec = true;
@@ -788,7 +788,7 @@ static int profile_onexec(struct aa_profile *profile, struct aa_label *onexec,
                if (DEBUG_ON) {
                        dbg_printk("apparmor: scrubbing environment "
                                   "variables for %s label=", xname);
-                       aa_label_printk(onexec, GFP_ATOMIC);
+                       aa_label_printk(onexec, GFP_KERNEL);
                        dbg_printk("\n");
                }
                *secure_exec = true;
@@ -822,7 +822,7 @@ static struct aa_label *handle_onexec(struct aa_label *label,
                                               bprm, buffer, cond, unsafe));
                if (error)
                        return ERR_PTR(error);
-               new = fn_label_build_in_ns(label, profile, GFP_ATOMIC,
+               new = fn_label_build_in_ns(label, profile, GFP_KERNEL,
                                aa_get_newest_label(onexec),
                                profile_transition(profile, bprm, buffer,
                                                   cond, unsafe));
@@ -834,9 +834,9 @@ static struct aa_label *handle_onexec(struct aa_label *label,
                                               buffer, cond, unsafe));
                if (error)
                        return ERR_PTR(error);
-               new = fn_label_build_in_ns(label, profile, GFP_ATOMIC,
+               new = fn_label_build_in_ns(label, profile, GFP_KERNEL,
                                aa_label_merge(&profile->label, onexec,
-                                              GFP_ATOMIC),
+                                              GFP_KERNEL),
                                profile_transition(profile, bprm, buffer,
                                                   cond, unsafe));
        }
@@ -907,7 +907,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
                new = handle_onexec(label, ctx->onexec, ctx->token,
                                    bprm, buffer, &cond, &unsafe);
        else
-               new = fn_label_build(label, profile, GFP_ATOMIC,
+               new = fn_label_build(label, profile, GFP_KERNEL,
                                profile_transition(profile, bprm, buffer,
                                                   &cond, &unsafe));
 
@@ -951,7 +951,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
                if (DEBUG_ON) {
                        dbg_printk("scrubbing environment variables for %s "
                                   "label=", bprm->filename);
-                       aa_label_printk(new, GFP_ATOMIC);
+                       aa_label_printk(new, GFP_KERNEL);
                        dbg_printk("\n");
                }
                bprm->secureexec = 1;
@@ -962,7 +962,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
                if (DEBUG_ON) {
                        dbg_printk("apparmor: clearing unsafe personality "
                                   "bits. %s label=", bprm->filename);
-                       aa_label_printk(new, GFP_ATOMIC);
+                       aa_label_printk(new, GFP_KERNEL);
                        dbg_printk("\n");
                }
                bprm->per_clear |= PER_CLEAR_ON_SETID;

diff --git a/security/apparmor/file.c b/security/apparmor/file.c
index 7b424e7..ab56e19 100644 (file)
--- a/security/apparmor/file.c
+++ b/security/apparmor/file.c
@@ -80,7 +80,7 @@ static void file_audit_cb(struct audit_buffer *ab, void *va)
        if (aad(sa)->peer) {
                audit_log_format(ab, " target=");
                aa_label_xaudit(ab, labels_ns(aad(sa)->label), aad(sa)->peer,
-                               FLAG_VIEW_SUBNS, GFP_ATOMIC);
+                               FLAG_VIEW_SUBNS, GFP_KERNEL);
        } else if (aad(sa)->fs.target) {
                audit_log_format(ab, " target=");
                audit_log_untrustedstring(ab, aad(sa)->fs.target);

diff --git a/security/apparmor/mount.c b/security/apparmor/mount.c
index 267a26f..79379d9 100644 (file)
--- a/security/apparmor/mount.c
+++ b/security/apparmor/mount.c
@@ -708,7 +708,7 @@ int aa_pivotroot(struct aa_label *label, const struct path *old_path,
        error = -ENOMEM;
        if (!old_buffer || !new_buffer)
                goto out;
-       target = fn_label_build(label, profile, GFP_ATOMIC,
+       target = fn_label_build(label, profile, GFP_KERNEL,
                        build_pivotroot(profile, new_path, new_buffer,
                                        old_path, old_buffer));
        if (!target) {