Re: 2.6.24-rc1 oops
From: Sid Boyce
Date: Thu Oct 25 2007 - 11:14:35 EST
FUJITA Tomonori wrote:
Jens, I should have CC'ed to you.
On Thu, 25 Oct 2007 10:22:02 +0900
FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> wrote:
On Thu, 25 Oct 2007 01:40:00 +0100
Sid Boyce <g3vbv@xxxxxxxxxxxxxxxx> wrote:
x86_64 dual, gcc version 4.2.2 (SUSE Linux).
------------[ cut here ]------------
kernel BUG at include/linux/scatterlist.h:50!
invalid opcode: 0000 [1] SMP
CPU 1
Modules linked in: ub crc_itu_t hwmon cdrom soundcore v4l1_compat
videobuf_core btcx_risc ff_memless floppy sg forcedeth ehci_hcd ohci_hcd
sd_mod usbcore jfs edd ext3 mbcache jbd fan pata_jmicron ahci sata_nv
pata_amd libata scsi_mod thermal processor
Pid: 0, comm: swapper Not tainted 2.6.24-rc1-smp #1
RIP: 0010:[<ffffffff881f3d27>] [<ffffffff881f3d27>]
:ub:ub_state_sense+0x9a/0x169
RSP: 0018:ffff810100697e60 EFLAGS: 00010093
RAX: 0000000087654321 RBX: ffff810105d55000 RCX: ffff81011f975540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff81011f975540
RBP: ffff810105d51000 R08: 0000000000000000 R09: ffff810105d55098
R10: ffff810001c319b8 R11: 0000000000000286 R12: ffff810105d55098
R13: ffff810105d55260 R14: ffff810105d55278 R15: ffff810105d55298
FS: 00002afb8597c6f0(0000) GS:ffff810100001800(0000) knlGS:0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00002afb8548200f CR3: 000000010615b000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff810100690000, task ffff810100689160)
Stack: 0000000000000001 ffff810105d55000 ffff810105d51000 0000000000000000
ffff810105d55260 ffffffff881f4d43 ffff810105919998 ffff810105d553a0
ffff810105d553af ffff810105d55348 0000000000000286 ffff810105d55058
Call Trace:
<IRQ> [<ffffffff881f4d43>] :ub:ub_scsi_action+0x1e3/0x214
[<ffffffff8023a34e>] tasklet_action+0x54/0x97
[<ffffffff8023a261>] __do_softirq+0x65/0xce
[<ffffffff8020d0bc>] call_softirq+0x1c/0x28
[<ffffffff8020e634>] do_softirq+0x2c/0x7d
[<ffffffff8023a1b7>] irq_exit+0x3f/0x84
[<ffffffff8020e7c3>] do_IRQ+0x13e/0x15f
[<ffffffff8020afa0>] default_idle+0x0/0x3d
[<ffffffff8020afa0>] default_idle+0x0/0x3d
[<ffffffff8020c441>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff8020afc9>] default_idle+0x29/0x3d
[<ffffffff8020b070>] cpu_idle+0x93/0xbb
Can you try this?
Thanks,
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 14143f2..78f158f 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1428,6 +1428,7 @@ static void ub_state_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
scmd->state = UB_CMDST_INIT;
scmd->nsg = 1;
sg = &scmd->sgv[0];
+ sg_init_table(sg, UB_MAX_REQ_SG);
sg_set_page(sg, virt_to_page(sc->top_sense));
sg->offset = (unsigned long)sc->top_sense & (PAGE_SIZE-1);
sg->length = UB_SENSE_SIZE;
@@ -1864,6 +1865,7 @@ static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
cmd->state = UB_CMDST_INIT;
cmd->nsg = 1;
sg = &cmd->sgv[0];
+ sg_init_table(sg, UB_MAX_REQ_SG);
sg_set_page(sg, virt_to_page(p));
sg->offset = (unsigned long)p & (PAGE_SIZE-1);
sg->length = 8;
Here's a modified version for your sg branch (for sg_set_page API
changes).
-
From: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
Subject: [PATCH] ub: add sg_init_table for sense and read capacity commands
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
---
drivers/block/ub.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 5e740e1..08e909d 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1428,6 +1428,7 @@ static void ub_state_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
scmd->state = UB_CMDST_INIT;
scmd->nsg = 1;
sg = &scmd->sgv[0];
+ sg_init_table(sg, UB_MAX_REQ_SG);
sg_set_page(sg, virt_to_page(sc->top_sense), UB_SENSE_SIZE,
(unsigned long)sc->top_sense & (PAGE_SIZE-1));
scmd->len = UB_SENSE_SIZE;
@@ -1863,6 +1864,7 @@ static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
cmd->state = UB_CMDST_INIT;
cmd->nsg = 1;
sg = &cmd->sgv[0];
+ sg_init_table(sg, UB_MAX_REQ_SG);
sg_set_page(sg, virt_to_page(p), 8, (unsigned long)p & (PAGE_SIZE-1));
cmd->len = 8;
cmd->lun = lun;
Boots OK, but oopses with depmod on Virtualbox and other proprietary
modules. I assume these modules are out of step with 2.6.24-rc1 and not
a kernel problem.
Regards
Sid.
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks
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