| Message ID | 20191108213853.16635-2-afaerber@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | btrfs: Fix build warnings for arm | expand |
On Fri, Nov 08, 2019 at 10:38:52PM +0100, Andreas Färber wrote: > From: Andreas Färber <afaerber@suse.com> > > Argument BTRFS_FILE_EXTENT_INLINE_DATA_START is defined as offsetof(), > which returns type size_t, so we need %zu instead of %lu. > > This fixes a build warning on 32-bit arm: > > ../fs/btrfs/tree-checker.c: In function 'check_extent_data_item': > ../fs/btrfs/tree-checker.c:230:43: warning: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'unsigned int' [-Wformat=] > 230 | "invalid item size, have %u expect [%lu, %u)", > | ~~^ > | | > | long unsigned int > | %u Is there a gcc warning option that can catch that on 64bit too? -Wformat=2 does not and I don't see any other of the option family to do that. We've had fixups of the size_t printk formats and I'd like to catch that when the patches are added to the devel branches. I can't run 32bit build check each time but this seems to be the only way so far. > Fixes: a31ccb4b7ba2 ("btrfs: tree-checker: Check item size before reading file extent type") As the patch is still in the devel branch, the commit id is not stable and I'll fold the change to to the patch. Thanks.
Hi David, On Mon, Nov 11, 2019 at 7:32 PM David Sterba <dsterba@suse.cz> wrote: > On Fri, Nov 08, 2019 at 10:38:52PM +0100, Andreas Färber wrote: > > From: Andreas Färber <afaerber@suse.com> > > > > Argument BTRFS_FILE_EXTENT_INLINE_DATA_START is defined as offsetof(), > > which returns type size_t, so we need %zu instead of %lu. > > > > This fixes a build warning on 32-bit arm: > > > > ../fs/btrfs/tree-checker.c: In function 'check_extent_data_item': > > ../fs/btrfs/tree-checker.c:230:43: warning: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'unsigned int' [-Wformat=] > > 230 | "invalid item size, have %u expect [%lu, %u)", > > | ~~^ > > | | > > | long unsigned int > > | %u > > Is there a gcc warning option that can catch that on 64bit too? > -Wformat=2 does not and I don't see any other of the option family to do > that. We've had fixups of the size_t printk formats and I'd like to > catch that when the patches are added to the devel branches. I can't run > 32bit build check each time but this seems to be the only way so far. Yep. On 64-bit, size_t _is_ unsigned long. So you have to compile for both 32-bit and 64-bit. Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> > > Fixes: a31ccb4b7ba2 ("btrfs: tree-checker: Check item size before reading file extent type") > > As the patch is still in the devel branch, the commit id is not stable It indeed is not: Fixes: 153a6d299956983d ("btrfs: tree-checker: Check item size before reading file extent type") > and I'll fold the change to to the patch. Thanks. Apparently that was forgotten, and now the issue is part of Linus' tree. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
On Tue, Nov 26, 2019 at 11:36:58AM +0100, Geert Uytterhoeven wrote: > > > Fixes: a31ccb4b7ba2 ("btrfs: tree-checker: Check item size before reading file extent type") > > > > As the patch is still in the devel branch, the commit id is not stable > > It indeed is not: > Fixes: 153a6d299956983d ("btrfs: tree-checker: Check item size before > reading file extent type") > > > and I'll fold the change to to the patch. Thanks. > > Apparently that was forgotten, and now the issue is part of Linus' tree. Mistake on my side so I'll apply the full fixup patch, thanks for noticing.
diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c index 493d4d9e0f79..092b8ece36d7 100644 --- a/fs/btrfs/tree-checker.c +++ b/fs/btrfs/tree-checker.c @@ -227,7 +227,7 @@ static int check_extent_data_item(struct extent_buffer *leaf, */ if (item_size < BTRFS_FILE_EXTENT_INLINE_DATA_START) { file_extent_err(leaf, slot, - "invalid item size, have %u expect [%lu, %u)", + "invalid item size, have %u expect [%zu, %u)", item_size, BTRFS_FILE_EXTENT_INLINE_DATA_START, SZ_4K); return -EUCLEAN;