If you run a program compiled with OpenWatcom for Linux on a filesystem on
NVMe, all "stat" syscalls fail with -EOVERFLOW. The reason is that the
NVMe driver allocates a device with the major number 259 and it doesn't
pass the "old_valid_dev" test.
This patch removes the tests - it's better to wrap around than to return
an error. (note that cp_old_stat also doesn't report an error and wraps
the number around)
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
fs/stat.c | 6 ------
1 file changed, 6 deletions(-)
Index: linux-5.17.2/fs/stat.c
===================================================================
--- linux-5.17.2.orig/fs/stat.c 2022-04-10 21:39:27.000000000 +0200
+++ linux-5.17.2/fs/stat.c 2022-04-10 21:42:43.000000000 +0200
@@ -334,7 +334,6 @@ SYSCALL_DEFINE2(fstat, unsigned int, fd,
# define choose_32_64(a,b) b
#endif
-#define valid_dev(x) choose_32_64(old_valid_dev(x),true)
#define encode_dev(x) choose_32_64(old_encode_dev,new_encode_dev)(x)
#ifndef INIT_STRUCT_STAT_PADDING
@@ -345,8 +344,6 @@ static int cp_new_stat(struct kstat *sta
{
struct stat tmp;
- if (!valid_dev(stat->dev) || !valid_dev(stat->rdev))
- return -EOVERFLOW;
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
return -EOVERFLOW;
@@ -644,9 +641,6 @@ static int cp_compat_stat(struct kstat *
{
struct compat_stat tmp;
- if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
- return -EOVERFLOW;
-
memset(&tmp, 0, sizeof(tmp));
tmp.st_dev = old_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
