commit a14d40939de7d38029f99c10bc237bb68e83d119
Author: Jie Liu <jeff.liu@oracle.com>
Date: Wed Jul 16 13:54:47 2014 +1000
quota: fix NULL pointer dereference in report_f
Run xfs_quota report against an invalid XFS path without desired quota
limitation is enabled will hit SEGSEGV as fs_path is uninitialized, e.g.
# xfs_quota -xc 'report -up' /invalid_path
xfs_quota: cannot setup path for mount /invalid_path: No such file or directory
Segmentation fault (core dumped)
(gdb) r -xc 'report -up' /invalid_path
xfs_quota: cannot setup path for mount /invalid_path: No such file or directory
Program received signal SIGSEGV, Segmentation fault.
0x0000000000408b4d in report_f (argc=2, argv=0x105ea70) at report.c:627
627 else if (fs_path->fs_flags & FS_MOUNT_POINT)
This patch fixes report_f() to only do report if the fs_path is initialized.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/quota/report.c b/quota/report.c
index 70894a2..8e3316e 100644
--- a/quota/report.c
+++ b/quota/report.c
@@ -624,7 +624,7 @@ report_f(
if (flags & ALL_MOUNTS_FLAG)
report_any_type(fp, form, type, NULL,
lower, upper, flags);
- else if (fs_path->fs_flags & FS_MOUNT_POINT)
+ else if (fs_path && (fs_path->fs_flags & FS_MOUNT_POINT))
report_any_type(fp, form, type, fs_path->fs_dir,
lower, upper, flags);
} else while (argc > optind) {