author: Oleg Nesterov <oleg@redhat.com> 2013-07-03 15:08:16 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2013-07-03 16:08:02 -0700
commit: e7fd1549aeb83e34ee0955cdf5dee5d4088508f3
parent: 7f57cfa4e2aa29fabe69e41529fd26578adc9b58
Commit Summary:
Diffstat:
1 file changed, 7 insertions, 10 deletions
diff --git a/fs/coredump.c b/fs/coredump.c
index dafafbafa731..11bc368e0017 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -58,16 +58,14 @@ static atomic_t call_count = ATOMIC_INIT(1);
static int expand_corename(struct core_name *cn)
{
- char *old_corename = cn->corename;
+ int size = CORENAME_MAX_SIZE * atomic_inc_return(&call_count);
+ char *corename = krealloc(cn->corename, size, GFP_KERNEL);
- cn->size = CORENAME_MAX_SIZE * atomic_inc_return(&call_count);
- cn->corename = krealloc(old_corename, cn->size, GFP_KERNEL);
-
- if (!cn->corename) {
- kfree(old_corename);
+ if (!corename)
return -ENOMEM;
- }
+ cn->size = size;
+ cn->corename = corename;
return 0;
}
@@ -157,10 +155,9 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
int pid_in_pattern = 0;
int err = 0;
+ cn->used = 0;
cn->size = CORENAME_MAX_SIZE * atomic_read(&call_count);
cn->corename = kmalloc(cn->size, GFP_KERNEL);
- cn->used = 0;
-
if (!cn->corename)
return -ENOMEM;
@@ -549,7 +546,7 @@ void do_coredump(siginfo_t *siginfo)
if (ispipe < 0) {
printk(KERN_WARNING "format_corename failed\n");
printk(KERN_WARNING "Aborting core\n");
- goto fail_corename;
+ goto fail_unlock;
}
if (cprm.limit == 1) {
@@ -669,7 +666,6 @@ fail_dropcount:
atomic_dec(&core_dump_count);
fail_unlock:
kfree(cn.corename);
-fail_corename:
coredump_finish(mm, core_dumped);
revert_creds(old_cred);
fail_creds: