Hi, On Saturday 09 February 2008, Sebastian Siewior wrote: > Hello, > > current git results in a freeze. I tracked it down to > > | error = type->get_sb(type, flags, name, data, mnt); > in vfs_kern_mount(), fs/super.c (what is called from mount_root() during > the boot process). I use XFS on my rootfs partition. After this, I > started to bisect. > During the bisect process I stepped into two things. The commit > > |commit 813a0eb233ee67d7166241a8b389b6a76f2247f9 > |Author: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]> > |Date: Fri Jan 25 22:17:10 2008 +0100 > | > | ide: switch idedisk_prepare_flush() to use REQ_TYPE_ATA_TASKFILE requests > | > | Based on the earlier work by Tejun Heo. > | > | There should be no functionality changes caused by this patch. > | > | Cc: Tejun Heo <[EMAIL PROTECTED]> > | Signed-off-by: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]> > | > |:040000 040000 e4708c62aef233d2b07da20aedd644182258f1f1 > 66aea951e7c32aa82621d8460b0f97ff132f23a6 M drivers > > turned the working boot process into [1]. Since this isn't the freeze I > was looking I continued my bisect process. The commit
It could be that due to block layer changes to I/O barrier handling allocating ATA command structure on the stack is no longer safe. Please try booting with "hdx=noflush" kernel parameter or please try the attached patch which should fix the issue (if my theory is correct). [...] > turned the Oops into the freeze. There was no working commit in between > (well, git-bisect did not find one). > > My .config [2], my lspci and cpuinfo [3]. > > [1] http://download.breakpoint.cc/lnx-2.6.24-post-crash.jpg > [2] http://download.breakpoint.cc/notebook-config.txt > [3] http://download.breakpoint.cc/system.txt --- drivers/ide/ide-disk.c | 14 +-- include/linux/ide.h | 206 ++++++++++++++++++++++++------------------------- 2 files changed, 111 insertions(+), 109 deletions(-) Index: b/drivers/ide/ide-disk.c =================================================================== --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -590,20 +590,20 @@ static ide_proc_entry_t idedisk_proc[] = static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) { ide_drive_t *drive = q->queuedata; - ide_task_t task; + ide_task_t *task = &drive->tf_task; - memset(&task, 0, sizeof(task)); + memset(task, 0, sizeof(*task)); if (ide_id_has_flush_cache_ext(drive->id) && (drive->capacity64 >= (1UL << 28))) - task.tf.command = WIN_FLUSH_CACHE_EXT; + task->tf.command = WIN_FLUSH_CACHE_EXT; else - task.tf.command = WIN_FLUSH_CACHE; - task.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; - task.data_phase = TASKFILE_NO_DATA; + task->tf.command = WIN_FLUSH_CACHE; + task->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; + task->data_phase = TASKFILE_NO_DATA; rq->cmd_type = REQ_TYPE_ATA_TASKFILE; rq->cmd_flags |= REQ_SOFTBARRIER; - rq->special = &task; + rq->special = task; } /* Index: b/include/linux/ide.h =================================================================== --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -32,6 +32,108 @@ # define SUPPORT_VLB_SYNC 1 #endif +enum { + IDE_TFLAG_LBA48 = (1 << 0), + IDE_TFLAG_NO_SELECT_MASK = (1 << 1), + IDE_TFLAG_FLAGGED = (1 << 2), + IDE_TFLAG_OUT_DATA = (1 << 3), + IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4), + IDE_TFLAG_OUT_HOB_NSECT = (1 << 5), + IDE_TFLAG_OUT_HOB_LBAL = (1 << 6), + IDE_TFLAG_OUT_HOB_LBAM = (1 << 7), + IDE_TFLAG_OUT_HOB_LBAH = (1 << 8), + IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE | + IDE_TFLAG_OUT_HOB_NSECT | + IDE_TFLAG_OUT_HOB_LBAL | + IDE_TFLAG_OUT_HOB_LBAM | + IDE_TFLAG_OUT_HOB_LBAH, + IDE_TFLAG_OUT_FEATURE = (1 << 9), + IDE_TFLAG_OUT_NSECT = (1 << 10), + IDE_TFLAG_OUT_LBAL = (1 << 11), + IDE_TFLAG_OUT_LBAM = (1 << 12), + IDE_TFLAG_OUT_LBAH = (1 << 13), + IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE | + IDE_TFLAG_OUT_NSECT | + IDE_TFLAG_OUT_LBAL | + IDE_TFLAG_OUT_LBAM | + IDE_TFLAG_OUT_LBAH, + IDE_TFLAG_OUT_DEVICE = (1 << 14), + IDE_TFLAG_WRITE = (1 << 15), + IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16), + IDE_TFLAG_IN_DATA = (1 << 17), + IDE_TFLAG_CUSTOM_HANDLER = (1 << 18), + IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19), + IDE_TFLAG_IN_HOB_FEATURE = (1 << 20), + IDE_TFLAG_IN_HOB_NSECT = (1 << 21), + IDE_TFLAG_IN_HOB_LBAL = (1 << 22), + IDE_TFLAG_IN_HOB_LBAM = (1 << 23), + IDE_TFLAG_IN_HOB_LBAH = (1 << 24), + IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL | + IDE_TFLAG_IN_HOB_LBAM | + IDE_TFLAG_IN_HOB_LBAH, + IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE | + IDE_TFLAG_IN_HOB_NSECT | + IDE_TFLAG_IN_HOB_LBA, + IDE_TFLAG_IN_NSECT = (1 << 25), + IDE_TFLAG_IN_LBAL = (1 << 26), + IDE_TFLAG_IN_LBAM = (1 << 27), + IDE_TFLAG_IN_LBAH = (1 << 28), + IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL | + IDE_TFLAG_IN_LBAM | + IDE_TFLAG_IN_LBAH, + IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT | + IDE_TFLAG_IN_LBA, + IDE_TFLAG_IN_DEVICE = (1 << 29), + IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB | + IDE_TFLAG_IN_HOB, + IDE_TFLAG_TF = IDE_TFLAG_OUT_TF | + IDE_TFLAG_IN_TF, + IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE | + IDE_TFLAG_IN_DEVICE, + /* force 16-bit I/O operations */ + IDE_TFLAG_IO_16BIT = (1 << 30), +}; + +struct ide_taskfile { + u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */ + + u8 hob_feature; /* 1-5: additional data to support LBA48 */ + u8 hob_nsect; + u8 hob_lbal; + u8 hob_lbam; + u8 hob_lbah; + + u8 data; /* 6: low data byte (for TASKFILE IOCTL) */ + + union { /* 7: */ + u8 error; /* read: error */ + u8 feature; /* write: feature */ + }; + + u8 nsect; /* 8: number of sectors */ + u8 lbal; /* 9: LBA low */ + u8 lbam; /* 10: LBA mid */ + u8 lbah; /* 11: LBA high */ + + u8 device; /* 12: device select */ + + union { /* 13: */ + u8 status; /* read: status */ + u8 command; /* write: command */ + }; +}; + +typedef struct ide_task_s { + union { + struct ide_taskfile tf; + u8 tf_array[14]; + }; + u32 tf_flags; + int data_phase; + struct request *rq; /* copy of request */ + void *special; /* valid_t generally */ +} ide_task_t; + /* * Used to indicate "no IRQ", should be a value that cannot be an IRQ * number. @@ -386,6 +488,8 @@ typedef struct ide_drive_s { struct list_head list; struct device gendev; struct completion gendev_rel_comp; /* to deal with device release() */ + + struct ide_task_s tf_task; } ide_drive_t; #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev) @@ -798,108 +902,6 @@ extern int ide_do_drive_cmd(ide_drive_t extern void ide_end_drive_cmd(ide_drive_t *, u8, u8); -enum { - IDE_TFLAG_LBA48 = (1 << 0), - IDE_TFLAG_NO_SELECT_MASK = (1 << 1), - IDE_TFLAG_FLAGGED = (1 << 2), - IDE_TFLAG_OUT_DATA = (1 << 3), - IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4), - IDE_TFLAG_OUT_HOB_NSECT = (1 << 5), - IDE_TFLAG_OUT_HOB_LBAL = (1 << 6), - IDE_TFLAG_OUT_HOB_LBAM = (1 << 7), - IDE_TFLAG_OUT_HOB_LBAH = (1 << 8), - IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE | - IDE_TFLAG_OUT_HOB_NSECT | - IDE_TFLAG_OUT_HOB_LBAL | - IDE_TFLAG_OUT_HOB_LBAM | - IDE_TFLAG_OUT_HOB_LBAH, - IDE_TFLAG_OUT_FEATURE = (1 << 9), - IDE_TFLAG_OUT_NSECT = (1 << 10), - IDE_TFLAG_OUT_LBAL = (1 << 11), - IDE_TFLAG_OUT_LBAM = (1 << 12), - IDE_TFLAG_OUT_LBAH = (1 << 13), - IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE | - IDE_TFLAG_OUT_NSECT | - IDE_TFLAG_OUT_LBAL | - IDE_TFLAG_OUT_LBAM | - IDE_TFLAG_OUT_LBAH, - IDE_TFLAG_OUT_DEVICE = (1 << 14), - IDE_TFLAG_WRITE = (1 << 15), - IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16), - IDE_TFLAG_IN_DATA = (1 << 17), - IDE_TFLAG_CUSTOM_HANDLER = (1 << 18), - IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19), - IDE_TFLAG_IN_HOB_FEATURE = (1 << 20), - IDE_TFLAG_IN_HOB_NSECT = (1 << 21), - IDE_TFLAG_IN_HOB_LBAL = (1 << 22), - IDE_TFLAG_IN_HOB_LBAM = (1 << 23), - IDE_TFLAG_IN_HOB_LBAH = (1 << 24), - IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL | - IDE_TFLAG_IN_HOB_LBAM | - IDE_TFLAG_IN_HOB_LBAH, - IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE | - IDE_TFLAG_IN_HOB_NSECT | - IDE_TFLAG_IN_HOB_LBA, - IDE_TFLAG_IN_NSECT = (1 << 25), - IDE_TFLAG_IN_LBAL = (1 << 26), - IDE_TFLAG_IN_LBAM = (1 << 27), - IDE_TFLAG_IN_LBAH = (1 << 28), - IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL | - IDE_TFLAG_IN_LBAM | - IDE_TFLAG_IN_LBAH, - IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT | - IDE_TFLAG_IN_LBA, - IDE_TFLAG_IN_DEVICE = (1 << 29), - IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB | - IDE_TFLAG_IN_HOB, - IDE_TFLAG_TF = IDE_TFLAG_OUT_TF | - IDE_TFLAG_IN_TF, - IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE | - IDE_TFLAG_IN_DEVICE, - /* force 16-bit I/O operations */ - IDE_TFLAG_IO_16BIT = (1 << 30), -}; - -struct ide_taskfile { - u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */ - - u8 hob_feature; /* 1-5: additional data to support LBA48 */ - u8 hob_nsect; - u8 hob_lbal; - u8 hob_lbam; - u8 hob_lbah; - - u8 data; /* 6: low data byte (for TASKFILE IOCTL) */ - - union { /* 7: */ - u8 error; /* read: error */ - u8 feature; /* write: feature */ - }; - - u8 nsect; /* 8: number of sectors */ - u8 lbal; /* 9: LBA low */ - u8 lbam; /* 10: LBA mid */ - u8 lbah; /* 11: LBA high */ - - u8 device; /* 12: device select */ - - union { /* 13: */ - u8 status; /* read: status */ - u8 command; /* write: command */ - }; -}; - -typedef struct ide_task_s { - union { - struct ide_taskfile tf; - u8 tf_array[14]; - }; - u32 tf_flags; - int data_phase; - struct request *rq; /* copy of request */ - void *special; /* valid_t generally */ -} ide_task_t; - void ide_tf_load(ide_drive_t *, ide_task_t *); void ide_tf_read(ide_drive_t *, ide_task_t *); - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
