Hi, switching to mail for now. Ok, this looks almost exactly like https://bugzilla.kernel.org/show_bug.cgi?id=13399 and I have a theory :) Hans, can you apply the debug patch below, rebuild your kernel and catch the _whole_ output this time (not the oops only) and send it to me? It might be a bit much with all the stack traces so let me know of any troubles you might have catching it. Thanks. -- diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 64207df..436304c 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -552,8 +552,10 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) if (!OK_STAT(stat, 0, BAD_R_STAT)) { rc = cdrom_decode_status(drive, stat); if (rc) { - if (rc == 2) + if (rc == 2) { + printk(KERN_EMERG "%s: bad status with a sense rq\n", __func__); goto out_end; + } return ide_stopped; } } @@ -667,8 +669,10 @@ out_end: blk_end_request_all(rq, 0); hwif->rq = NULL; } else { - if (sense && uptodate) + if (sense && uptodate) { + printk(KERN_EMERG "%s: complete failed rq: %p\n", __func__, rq); ide_cd_complete_failed_rq(drive, rq); + } if (blk_fs_request(rq)) { if (cmd->nleft == 0) @@ -688,10 +692,13 @@ out_end: rq->resid_len += cmd->last_xfer_len; } + printk(KERN_EMERG "%s: completing rq %p\n", __func__, rq); ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq)); - if (sense && rc == 2) + if (sense && rc == 2) { + printk(KERN_EMERG "%s: request sense failure, rq: %p\n", __func__, rq); ide_error(drive, "request sense failure", stat); + } } return ide_stopped; } diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 172ac92..3317778 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -57,6 +57,9 @@ int ide_end_rq(ide_drive_t *drive, struct request *rq, int error, unsigned int nr_bytes) { + + dump_stack(); + /* * decide whether to reenable DMA -- 3 is a random magic for now, * if we DMA timeout more than 3 times, just stay in PIO @@ -118,6 +121,8 @@ int ide_complete_rq(ide_drive_t *drive, int error, unsigned int nr_bytes) struct request *rq = hwif->rq; int rc; + dump_stack(); + /* * if failfast is set on a request, override number of sectors * and complete the whole request right now -- Regards/Gruss, Boris. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
