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(parent: f544342) | patch
bugfix: prevent a NULL ptr deref if branch is nfs and using mmap writes
authorErez_Zadok <ezk@cs.sunysb.edu>
Thu, 24 May 2007 01:27:58 +0000 (21:27 -0400)
committerErez Zadok <ezk@cs.sunysb.edu>
Sun, 6 Mar 2011 08:42:23 +0000 (03:42 -0500)
commit3c59173411f705768f89b1a873faab2bd1351452
tree8544660b0d244eec7da9e30be9e200cd9a709b08tree | snapshot
parentf5443426b39d6f80f011233fbfd4b504342a6a94commit | diff
bugfix: prevent a NULL ptr deref if branch is nfs and using mmap writes

By some strange condition, the VFS can pass our unionfs_writepage a
writeback_control structure which, if passed as is to the lower ->writepage
-- here nfs_writepage, triggers a NULL ptr deref in NFS.  This fix works
around this issue, and results in a successfully written mmaped file.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
fs/unionfs/mmap.c diff | blob | history
unionfs2-2.6.36.y