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selinux: revert use of __getname() in selinux_genfs_get_sid()

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Revert commit 54067bacb4 ("selinux: hooks: use __getname() to allocate
path buffer") as it improperly assumed that PATH_MAX == PAGE_SIZE
everywhere.  Moving away from __get_free_page() is still a good thing and
will be revisited in the future.

Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reported-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Paul Moore
2026-05-29 11:24:37 -04:00
parent 447e04178b
commit 033182baea
1 changed files with 2 additions and 2 deletions
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4
security/selinux/hooks.c
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@@ -1336,7 +1336,7 @@ static int selinux_genfs_get_sid(struct dentry *dentry,
struct super_block *sb = dentry->d_sb;
char *buffer, *path;
buffer = __getname();
buffer = (char *)__get_free_page(GFP_KERNEL);
if (!buffer)
return -ENOMEM;
@@ -1361,7 +1361,7 @@ static int selinux_genfs_get_sid(struct dentry *dentry,
rc = 0;
}
}
__putname(buffer);
free_page((unsigned long)buffer);
return rc;
}