[LU-18608] Insecure data handling (INTEGER_OVERFLOW) /lustre/llite/pcc.c: pcc_io_fini() in pcc_file_read_iter()

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: Qian Yingjin
• Reporter: Qian Yingjin

Description

** CID 454276: Insecure data handling (INTEGER_OVERFLOW)
/lustre/llite/pcc.c: 2643 in pcc_file_read_iter()

________________________________________________________________________________________________________
*** CID 454276: Insecure data handling (INTEGER_OVERFLOW)
/lustre/llite/pcc.c: 2643 in pcc_file_read_iter()

2637         if (iocb->ki_pos > i_size_read(inode) && result > 0)
2638             result -= iocb->ki_pos - i_size_read(inode);
2639     
2640     out:
2641         iocb->ki_filp = file;
2642         pcc_io_fini(inode, PIT_READ, result, cached);
   CID 454276:  Insecure data handling  (INTEGER_OVERFLOW)
   "result", which might have overflowed, is returned from the function.
2643         RETURN(result);
2644     }
2645     
2646     static ssize_t
2647     __pcc_file_write_iter(struct kiocb *iocb, struct iov_iter *iter)
2648     {

Issue Links

• is related to: LU-17000 Coverity static analysis issues