Messages in this thread Patch in this message | | | Date | Wed, 17 Nov 1999 13:50:16 +0300 (MSK) | From | "Dmitry V. Levin" <> | Subject | PROBLEM: OOPS in linux-2.2.13/include/linux/quotaops.h:98 |
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Greetings!
1. OOPS in linux-2.2.13/include/linux/quotaops.h:98
2. File linux-2.2.13/include/linux/quotaops.h, line 98 appears to be buggy (dereferncing NULL). As result, call to DQUOT_TRANSFER with CONFIG_QUOTA enabled produces OOPS for some types of files (which have no superblock).
3. DISKQUOTA
6. Example program:
#include <sys/socket.h> #include <unistd.h> int main( void ) { int fd = socket( AF_INET, SOCK_STREAM, 0 ); if ( fd >= 0 ) fchown( fd, -1, -1 ); return 0; }
8. Patch:
- --- linux-2.2.13-orig/include/linux/quotaops.h Wed Oct 20 04:14:02 1999 +++ linux-2.2.13/include/linux/quotaops.h Wed Nov 17 12:23:12 1999 @@ -98,7 +98,7 @@ { int error = -EDQUOT; - - if (dentry->d_inode->i_sb->dq_op) { + if (dentry->d_inode->i_sb && dentry->d_inode->i_sb->dq_op) { dentry->d_inode->i_sb->dq_op->initialize(dentry->d_inode, -1); error = dentry->d_inode->i_sb->dq_op->transfer(dentry, iattr, current->fsuid); } else {
Regards, Dmitry
+-------------------------------------------------------------------------+ Dmitry V. Levin mailto://ldv@fandra.org Software Engineer PGP pubkey http://www.fandra.org/users/ldv/pgpkeys.html Fandra Project http://www.fandra.org +-------------------------------------------------------------------------+
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