btrfs: set space_info before adding new free space in btrfs_make_block_group()

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btrfs_make_block_group() calls btrfs_add_new_free_space() before
assigning cache->space_info. On a zoned filesystem that ends up in
__btrfs_add_free_space_zoned(), which dereferences
block_group->space_info and thus hits a NULL pointer dereference when a
non-initial free space range is added (e.g. during relocation).

Assign cache->space_info before the btrfs_add_new_free_space() call.

Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Johannes Thumshirn 2026-08-24 18:47:58 +02:00 • committed by David Sterba

parent 6a7a45b1d9

commit 776924b2d9

1 changed files with 11 additions and 7 deletions

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fs/btrfs/block-group.c

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