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hpfs: fix a crash if hpfs_map_dnode_bitmap fails

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If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on
uninitialized quad buffer head, causing a crash.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Farhad Alemi <farhad.alemi@berkeley.edu>
Cc: stable@vger.kernel.org
This commit is contained in:
Mikulas Patocka 2026-05-25 14:48:58 +02:00
parent e7ae89a0c9
commit 974820a59e
1 changed files with 1 additions and 1 deletions
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2
fs/hpfs/alloc.c
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@ -372,8 +372,8 @@ int hpfs_check_free_dnodes(struct super_block *s, int n)
return 0;
}
}
hpfs_brelse4(&qbh);
}
hpfs_brelse4(&qbh);
i = 0;
if (hpfs_sb(s)->sb_c_bitmap != -1) {
bmp = hpfs_map_bitmap(s, b, &qbh, "chkdn1");