ksmbd: add low bound validation to FSCTL_QUERY_ALLOCATED_RANGES

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[ Upstream commit 342edb60dc ]

Smatch static checker warning:
 fs/ksmbd/vfs.c:1040 ksmbd_vfs_fqar_lseek() warn: no lower bound on 'length'
 fs/ksmbd/vfs.c:1041 ksmbd_vfs_fqar_lseek() warn: no lower bound on 'start'

Fix unexpected result that could caused from negative start and length.

Fixes: f441584858 ("cifsd: add file operations")
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Namjae Jeon 2023-03-07 21:56:07 +09:00 • committed by Greg Kroah-Hartman

parent bb4aeb8b3f

commit 2bfdd4dc69

1 changed files with 6 additions and 3 deletions

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fs/ksmbd/smb2pdu.c

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