There are reports that json output of 'qgroup show' crashes due to
internal error when printing the limit values:
INTERNAL ERROR: unknown unit base, mode 2304
btrfs(internal_error+0x10a)[0x5605c37ce48a]
btrfs(pretty_size_snprintf+0x5c)[0x5605c37d105c]
btrfs(fmt_print+0x44e)[0x5605c37d178e]
btrfs(+0x7ed1d)[0x5605c3800d1d]
btrfs(main+0x8f)[0x5605c379beff]
/lib64/libc.so.6(+0x27bb0)[0x7f83924ddbb0]
/lib64/libc.so.6(__libc_start_main+0x8b)[0x7f83924ddc79]
btrfs(_start+0x25)[0x5605c379d405]
common/units.c:82: pretty_size_snprintf: Assertion `0` failed, value 0
btrfs(+0x1d4b1)[0x5605c379f4b1]
btrfs(pretty_size_snprintf+0x7b)[0x5605c37d107b]
btrfs(fmt_print+0x44e)[0x5605c37d178e]
btrfs(+0x7ed1d)[0x5605c3800d1d]
btrfs(main+0x8f)[0x5605c379beff]
/lib64/libc.so.6(+0x27bb0)[0x7f83924ddbb0]
/lib64/libc.so.6(__libc_start_main+0x8b)[0x7f83924ddc79]
btrfs(_start+0x25)[0x5605c379d405]
This is caused by "size" format that requires the unit mode, but it was not
specified and some stack value used. As json prints the raw values, use
the plain %llu format.
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1206960
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1209136#c15
Signed-off-by: David Sterba <dsterba@suse.com>
ab32c4445d