Maybe the goto on line 1726 needs a preceding mutex_unlock? julia
On Mon, 25 Jan 2016, kbuild test robot wrote: > Hi Herbert, > > [auto build test WARNING on net/master] > [also build test WARNING on v4.4 next-20160122] > [if your patch is applied to the wrong git tree, please drop us a note to > help improving the system] > > url: > https://github.com/0day-ci/linux/commits/Herbert-Xu/crypto-Use-skcipher-and-ahash-shash-where-possible/20160124-212323 > :::::: branch date: 5 hours ago > :::::: commit date: 5 hours ago > > >> fs/ecryptfs/keystore.c:1761:1-7: preceding lock on line 1719 > > git remote add linux-review https://github.com/0day-ci/linux > git remote update linux-review > git checkout 0186bf144c1f96606f491be0e7ed47b79ea0d285 > vim +1761 fs/ecryptfs/keystore.c > > ac97b9f9 Michael Halcrow 2008-11-19 1713 if (rc < 1 || rc > 2) { > f4aad16a Michael Halcrow 2007-10-16 1714 printk(KERN_ERR > "Internal error whilst attempting to convert " > f4aad16a Michael Halcrow 2007-10-16 1715 > "auth_tok->session_key.decrypted_key to scatterlist; " > f4aad16a Michael Halcrow 2007-10-16 1716 "expected rc = > 1; got rc = [%d]\n", rc); > f4aad16a Michael Halcrow 2007-10-16 1717 goto out; > 237fead6 Michael Halcrow 2006-10-04 1718 } > 237fead6 Michael Halcrow 2006-10-04 @1719 mutex_lock(tfm_mutex); > 0186bf14 Herbert Xu 2016-01-24 1720 req = > skcipher_request_alloc(tfm, GFP_KERNEL); > 0186bf14 Herbert Xu 2016-01-24 1721 if (!req) { > 0186bf14 Herbert Xu 2016-01-24 1722 printk(KERN_ERR "%s: > Out of kernel memory whilst attempting to " > 0186bf14 Herbert Xu 2016-01-24 1723 > "skcipher_request_alloc for %s\n", __func__, > 0186bf14 Herbert Xu 2016-01-24 1724 > crypto_skcipher_driver_name(tfm)); > 0186bf14 Herbert Xu 2016-01-24 1725 rc = -ENOMEM; > 0186bf14 Herbert Xu 2016-01-24 1726 goto out; > 0186bf14 Herbert Xu 2016-01-24 1727 } > 0186bf14 Herbert Xu 2016-01-24 1728 > 0186bf14 Herbert Xu 2016-01-24 1729 > skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, > 0186bf14 Herbert Xu 2016-01-24 1730 > NULL, NULL); > 0186bf14 Herbert Xu 2016-01-24 1731 rc = crypto_skcipher_setkey( > 0186bf14 Herbert Xu 2016-01-24 1732 tfm, > auth_tok->token.password.session_key_encryption_key, > 237fead6 Michael Halcrow 2006-10-04 1733 crypt_stat->key_size); > f4aad16a Michael Halcrow 2007-10-16 1734 if (unlikely(rc < 0)) { > f4aad16a Michael Halcrow 2007-10-16 1735 mutex_unlock(tfm_mutex); > e5d9cbde Michael Halcrow 2006-10-30 1736 printk(KERN_ERR "Error > setting key for crypto context\n"); > e5d9cbde Michael Halcrow 2006-10-30 1737 rc = -EINVAL; > f4aad16a Michael Halcrow 2007-10-16 1738 goto out; > 237fead6 Michael Halcrow 2006-10-04 1739 } > 0186bf14 Herbert Xu 2016-01-24 1740 skcipher_request_set_crypt(req, > src_sg, dst_sg, > 0186bf14 Herbert Xu 2016-01-24 1741 > auth_tok->session_key.encrypted_key_size, > 0186bf14 Herbert Xu 2016-01-24 1742 > NULL); > 0186bf14 Herbert Xu 2016-01-24 1743 rc = > crypto_skcipher_decrypt(req); > f4aad16a Michael Halcrow 2007-10-16 1744 mutex_unlock(tfm_mutex); > f4aad16a Michael Halcrow 2007-10-16 1745 if (unlikely(rc)) { > 8bba066f Michael Halcrow 2006-10-30 1746 printk(KERN_ERR "Error > decrypting; rc = [%d]\n", rc); > f4aad16a Michael Halcrow 2007-10-16 1747 goto out; > 8bba066f Michael Halcrow 2006-10-30 1748 } > 237fead6 Michael Halcrow 2006-10-04 1749 auth_tok->session_key.flags |= > ECRYPTFS_CONTAINS_DECRYPTED_KEY; > 237fead6 Michael Halcrow 2006-10-04 1750 memcpy(crypt_stat->key, > auth_tok->session_key.decrypted_key, > 237fead6 Michael Halcrow 2006-10-04 1751 > auth_tok->session_key.decrypted_key_size); > e2bd99ec Michael Halcrow 2007-02-12 1752 crypt_stat->flags |= > ECRYPTFS_KEY_VALID; > f4aad16a Michael Halcrow 2007-10-16 1753 if (unlikely(ecryptfs_verbosity > > 0)) { > f24b3887 Tyler Hicks 2010-11-15 1754 > ecryptfs_printk(KERN_DEBUG, "FEK of size [%zd]:\n", > f4aad16a Michael Halcrow 2007-10-16 1755 > crypt_stat->key_size); > 237fead6 Michael Halcrow 2006-10-04 1756 > ecryptfs_dump_hex(crypt_stat->key, > 237fead6 Michael Halcrow 2006-10-04 1757 > crypt_stat->key_size); > f4aad16a Michael Halcrow 2007-10-16 1758 } > 237fead6 Michael Halcrow 2006-10-04 1759 out: > 0186bf14 Herbert Xu 2016-01-24 1760 skcipher_request_free(req); > 237fead6 Michael Halcrow 2006-10-04 @1761 return rc; > 237fead6 Michael Halcrow 2006-10-04 1762 } > 237fead6 Michael Halcrow 2006-10-04 1763 > 237fead6 Michael Halcrow 2006-10-04 1764 /** > > :::::: The code at line 1761 was first introduced by commit > :::::: 237fead619984cc48818fe12ee0ceada3f55b012 [PATCH] ecryptfs: fs/Makefile > and fs/Kconfig > > :::::: TO: Michael Halcrow <mhalc...@us.ibm.com> > :::::: CC: Linus Torvalds <torva...@g5.osdl.org> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation >
