Breno Leitao 816d369734 efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths ...

[ Upstream commit 64e135f1ea ]

When processing mount options, efivarfs allocates efivarfs_fs_info (sfi)
early in fs_context initialization. However, sfi is associated with the
superblock and typically freed when the superblock is destroyed. If the
fs_context is released (final put) before fill_super is called—such as
on error paths or during reconfiguration—the sfi structure would leak,
as ownership never transfers to the superblock.

Implement the .free callback in efivarfs_context_ops to ensure any
allocated sfi is properly freed if the fs_context is torn down before
fill_super, preventing this memory leak.

Suggested-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Fixes: 5329aa5101 ("efivarfs: Add uid/gid mount options")
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-07-24 08:56:36 +02:00

..

file.c

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inode.c

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internal.h

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Kconfig

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Makefile

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super.c

efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths

2025-07-24 08:56:36 +02:00

vars.c

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