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Patrick Callaghan authored
The integrity_kernel_read() call in ima_calc_file_hash_tfm() can return a value of 0 before all bytes of the file are read. A value of 0 would normally indicate an EOF. This has been observed if a user process is causing a file appraisal and is terminated with a SIGTERM signal. The most common occurrence of seeing the problem is if a shutdown or systemd reload is initiated while files are being appraised. The problem is similar to commit <f5e10401> (ima: always return negative code for error) that fixed the problem in ima_calc_file_hash_atfm(). Suggested-by:
Mimi Zohar <zohar@linux.ibm.com> Signed-off-by:
Patrick Callaghan <patrickc@linux.ibm.com> Reviewed-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
Mimi Zohar <zohar@linux.ibm.com>
96c9e1de