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fs/ntfs3: Check 'folio' pointer for NULL

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It can be NULL if bmap is called.

Fixes: 82cae269cfa95 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2024-04-16 09:54:34 +03:00
parent b0a5ddee56
commit 1cd6c96219
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GPG Key ID: A9B0331F832407B6
1 changed files with 11 additions and 6 deletions
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7
fs/ntfs3/inode.c
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@ -571,13 +571,18 @@ static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo,
clear_buffer_uptodate(bh); clear_buffer_uptodate(bh);
if (is_resident(ni)) { if (is_resident(ni)) {
bh->b_blocknr = RESIDENT_LCN;
bh->b_size = block_size;
if (!folio) {
err = 0;
} else {
ni_lock(ni); ni_lock(ni);
err = attr_data_read_resident(ni, &folio->page); err = attr_data_read_resident(ni, &folio->page);
ni_unlock(ni); ni_unlock(ni);
if (!err) if (!err)
set_buffer_uptodate(bh); set_buffer_uptodate(bh);
bh->b_size = block_size; }
return err; return err;
} }