This test corrupts an inode entry with an invalid mode through debugfs
and then tries to access it. This should result in a ext4 error, which
we monitor through the fanotify group.
In order for this test to succeed, it requires a kernel fix introduced
by kernel commit 124e7c61deb2 ("ext4: fix error code saved on super
block during file system abort"), which is added to .tags.
Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx>
Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx>
---
.../kernel/syscalls/fanotify/fanotify22.c | 26 +++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/testcases/kernel/syscalls/fanotify/fanotify22.c b/testcases/kernel/syscalls/fanotify/fanotify22.c
index 5d8b4eec74bd..9cd8c8f919b0 100644
--- a/testcases/kernel/syscalls/fanotify/fanotify22.c
+++ b/testcases/kernel/syscalls/fanotify/fanotify22.c
@@ -34,6 +34,10 @@
#ifdef HAVE_SYS_FANOTIFY_H
#include "fanotify.h"
+#ifndef EFSCORRUPTED
+#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
+#endif
+
#define BUF_SIZE 256
static char event_buf[BUF_SIZE];
int fd_notify;
@@ -59,6 +63,17 @@ static void do_debugfs_request(const char *dev, char *request)
SAFE_CMD(cmd, NULL, NULL);
}
+static void tcase2_trigger_lookup(void)
+{
+ int ret;
+
+ /* SAFE_OPEN cannot be used here because we expect it to fail. */
+ ret = open(MOUNT_PATH"/"BAD_DIR, O_RDONLY, 0);
+ if (ret != -1 && errno != EUCLEAN)
+ tst_res(TFAIL, "Unexpected lookup result(%d) of %s (%d!=%d)",
+ ret, BAD_DIR, errno, EUCLEAN);
+}
+
static struct test_case {
char *name;
int error;
@@ -73,6 +88,13 @@ static struct test_case {
.error = ESHUTDOWN,
.fid = &null_fid,
},
+ {
+ .name = "Lookup of inode with invalid mode",
+ .trigger_error = &tcase2_trigger_lookup,
+ .error_count = 1,
+ .error = EFSCORRUPTED,
+ .fid = &bad_file_fid,
+ },
};
int check_error_event_info_fid(struct fanotify_event_info_fid *fid,
@@ -251,6 +273,10 @@ static struct tst_test test = {
.mntpoint = MOUNT_PATH,
.needs_root = 1,
.dev_fs_type = "ext4",
+ .tags = (const struct tst_tag[]) {
+ {"linux-git", "124e7c61deb2"},
+ {}
+ },
.needs_cmds = (const char *[]) {
"debugfs",
NULL
--
2.33.0
