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authorLinus Torvalds <torvalds@linux-foundation.org>2020-01-09 21:42:05 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-01-09 21:42:05 -0800
commitbef1d88263ff769f15aa0e1515cdcede84e61d15 (patch)
tree25208c2ee789fa255baa10fd22769e57444ea86e /fs
parent6d25ef773538c82445ee2ea849acecc0889cc7f6 (diff)
parente163fdb3f7f8c62dccf194f3f37a7bcb3c333aa8 (diff)
Merge tag 'pstore-v5.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore fix from Kees Cook: "Cengiz Can forwarded a Coverity report about more problems with a rare pstore initialization error path, so the allocation lifetime was rearranged to avoid needing to share the kfree() responsibilities between caller and callee" * tag 'pstore-v5.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: pstore/ram: Regularize prz label allocation lifetime
Diffstat (limited to 'fs')
-rw-r--r--fs/pstore/ram.c4
-rw-r--r--fs/pstore/ram_core.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 487ee39b438a..013486b5125e 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -583,12 +583,12 @@ static int ramoops_init_przs(const char *name,
prz_ar[i] = persistent_ram_new(*paddr, zone_sz, sig,
&cxt->ecc_info,
cxt->memtype, flags, label);
+ kfree(label);
if (IS_ERR(prz_ar[i])) {
err = PTR_ERR(prz_ar[i]);
dev_err(dev, "failed to request %s mem region (0x%zx@0x%llx): %d\n",
name, record_size,
(unsigned long long)*paddr, err);
- kfree(label);
while (i > 0) {
i--;
@@ -629,12 +629,12 @@ static int ramoops_init_prz(const char *name,
label = kasprintf(GFP_KERNEL, "ramoops:%s", name);
*prz = persistent_ram_new(*paddr, sz, sig, &cxt->ecc_info,
cxt->memtype, PRZ_FLAG_ZAP_OLD, label);
+ kfree(label);
if (IS_ERR(*prz)) {
int err = PTR_ERR(*prz);
dev_err(dev, "failed to request %s mem region (0x%zx@0x%llx): %d\n",
name, sz, (unsigned long long)*paddr, err);
- kfree(label);
return err;
}
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c
index 8823f65888f0..1f4d8c06f9be 100644
--- a/fs/pstore/ram_core.c
+++ b/fs/pstore/ram_core.c
@@ -574,7 +574,7 @@ struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size,
/* Initialize general buffer state. */
raw_spin_lock_init(&prz->buffer_lock);
prz->flags = flags;
- prz->label = label;
+ prz->label = kstrdup(label, GFP_KERNEL);
ret = persistent_ram_buffer_map(start, size, prz, memtype);
if (ret)

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