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authorOleg Nesterov <oleg@redhat.com>2011-07-26 23:08:34 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 23:49:43 (GMT)
commit99b64567486716d18b2156cad188d86478816e4f (patch)
tree40ab51505909d417c01877c3dff97b7cabcf473d
parent2c563731fee0f625924f72e854957bc77601e8b3 (diff)
do_coredump: fix the "ispipe" error check
do_coredump() assumes that if format_corename() fails it should return -ENOMEM. This is not true, for example cn_print_exe_file() can propagate the error from d_path. Even if it was true, this is too fragile. Change the code to check "ispipe < 0". Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reviewed-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/exec.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 27d487f..f8fad7f 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -2133,16 +2133,16 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
ispipe = format_corename(&cn, signr);
- if (ispipe == -ENOMEM) {
- printk(KERN_WARNING "format_corename failed\n");
- printk(KERN_WARNING "Aborting core\n");
- goto fail_corename;
- }
-
if (ispipe) {
int dump_count;
char **helper_argv;
+ if (ispipe < 0) {
+ printk(KERN_WARNING "format_corename failed\n");
+ printk(KERN_WARNING "Aborting core\n");
+ goto fail_corename;
+ }
+
if (cprm.limit == 1) {
/*
* Normally core limits are irrelevant to pipes, since

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