[Bug 13399] kernel crash SONY DVD-ROM with cd

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http://bugzilla.kernel.org/show_bug.cgi?id=13399





--- Comment #49 from David Woodhouse <dwmw2@infradead.org>  2009-09-10 12:23:24 ---
http://david.woodhou.se/cimg2777.jpg

(gdb) list *cdrom_newpc_intr + 0x72b
0xe56 is in cdrom_newpc_intr (drivers/ide/ide-cd.c:692).
687                    rq->resid_len += cmd->last_xfer_len;
688            }
689    
690            ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));
691    
692            if (sense && rc == 2)
693                ide_error(drive, "request sense failure", stat);
694        }
695        return ide_stopped;
696    }

(gdb) list *ide_complete_rq+0x1f
0xffffffff812f0cd6 is in ide_complete_rq (drivers/ide/ide-io.c:125).
120    
121        /*
122         * if failfast is set on a request, override number of sectors
123         * and complete the whole request right now
124         */
125        if (blk_noretry_request(rq) && error <= 0)
126            nr_bytes = blk_rq_sectors(rq) << 9;
127    
128        rc = ide_end_rq(drive, rq, error, nr_bytes);
129        if (rc == 0)
(gdb) list *ide_complete_rq+0x37
0xffffffff812f0cee is in ide_complete_rq (drivers/ide/ide-io.c:129).
124         */
125        if (blk_noretry_request(rq) && error <= 0)
126            nr_bytes = blk_rq_sectors(rq) << 9;
127    
128        rc = ide_end_rq(drive, rq, error, nr_bytes);
129        if (rc == 0)
130            hwif->rq = NULL;
131    
132        return rc;
133    }

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