tree 62fcc9de092b2161b449f9205d516cba2e82b0b7
parent 83982b6f47201c4c7767210d24d7d8c99567a0b3
author Jan Kara <jack@suse.cz> 1231271615 -0500
committer Theodore Ts'o <tytso@mit.edu> 1231271615 -0500

jbd2: Fix oops in jbd2_journal_init_inode() on corrupted fs

On 32-bit system with CONFIG_LBD getblk can fail because provided
block number is too big.  Add error checks so we fail gracefully if
getblk() returns NULL (which can also happen on memory allocation
failures).

Thanks to David Maciejak from Fortinet's FortiGuard Global Security
Research Team for reporting this bug.

http://bugzilla.kernel.org/show_bug.cgi?id=12370

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
cc: stable@kernel.org