efi: Fix error handling in add_sysfs_runtime_map_entry()

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commit d67e199611 upstream.

I spotted two (difficult to hit) bugs while reviewing this.

1)  There is a double free bug because we unregister "map_kset" in
    add_sysfs_runtime_map_entry() and also efi_runtime_map_init().
2)  If we fail to allocate "entry" then we should return
    ERR_PTR(-ENOMEM) instead of NULL.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Guangyu Sun <guangyu.sun@oracle.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Dan Carpenter 2015-04-21 16:46:28 +03:00 • committed by Luis Henriques

parent a6acb9ff0d

commit adba19f31c

1 changed files with 3 additions and 3 deletions

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drivers/firmware/efi/runtime-map.c

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