Matthew Garrett e2861fa716 evm: Don't deadlock if a crypto algorithm is unavailable ... When EVM attempts to appraise a file signed with a crypto algorithm the kernel doesn't have support for, it will cause the kernel to trigger a module load. If the EVM policy includes appraisal of kernel modules this will in turn call back into EVM - since EVM is holding a lock until the crypto initialisation is complete, this triggers a deadlock. Add a CRYPTO_NOLOAD flag and skip module loading if it's set, and add that flag in the EVM case in order to fail gracefully with an error message instead of deadlocking. Signed-off-by: Matthew Garrett <mjg59@google.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>		2018-07-18 07:27:22 -04:00
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Kconfig	EVM: Allow runtime modification of the set of verified xattrs	2018-05-18 15:34:45 -04:00
Makefile	evm: posix acls modify i_mode	2011-09-14 15:24:51 -04:00
evm.h	EVM: turn evm_config_xattrnames into a list	2018-05-18 15:34:36 -04:00
evm_crypto.c	evm: Don't deadlock if a crypto algorithm is unavailable	2018-07-18 07:27:22 -04:00
evm_main.c	EVM: Allow runtime modification of the set of verified xattrs	2018-05-18 15:34:45 -04:00
evm_posix_acl.c	ima: fix script messages	2013-10-25 13:17:19 -04:00
evm_secfs.c	EVM: unlock on error path in evm_read_xattrs()	2018-06-01 06:03:08 -04:00