Hmmmm .... did a disassemble of this on a similar machine (see end of email)
data seems to contradict what I was looking at previously ....
not sure what happened, but this set makes much more sense,
as it leads to 13c in the offset ;-)
0xc01c1ac6 <isp1020_intr_handler+486>: mov %eax,0x13c(%ebp)
which is drivers/scsi/qlogicisp.c:1051
Cmnd->result = isp1020_return_status(sts);
seemingly Cmnd is null ... this is in
while (out_ptr != in_ptr) {
u_int cmd_slot;
sts = (struct Status_Entry *) &hostdata->res_cpu[out_ptr];
out_ptr = (out_ptr + 1) & RES_QUEUE_LEN;
cmd_slot = sts->handle;
Cmnd = hostdata->cmd_slots[cmd_slot];
hostdata->cmd_slots[cmd_slot] = NULL;
TRACE("done", out_ptr, Cmnd);
if (le16_to_cpu(sts->completion_status) == CS_RESET_OCCURRED
|| le16_to_cpu(sts->completion_status) == CS_ABORTED
|| (le16_to_cpu(sts->status_flags) & STF_BUS_RESET))
hostdata->send_marker = 1;
if (le16_to_cpu(sts->state_flags) & SF_GOT_SENSE)
memcpy(Cmnd->sense_buffer, sts->req_sense_data,
sizeof(Cmnd->sense_buffer));
DEBUG_INTR(isp1020_print_status_entry(sts));
if (sts->hdr.entry_type == ENTRY_STATUS)
Cmnd->result = isp1020_return_status(sts);
else
Cmnd->result = DID_ERROR << 16;
if (Cmnd->use_sg)
pci_unmap_sg(hostdata->pci_dev,
(struct scatterlist *)Cmnd->buffer,
Cmnd->use_sg,
scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
else if (Cmnd->request_bufflen)
pci_unmap_single(hostdata->pci_dev,
#ifdef CONFIG_QL_ISP_A64
(dma_addr_t)((long)Cmnd->SCp.ptr),
#else
(u32)((long)Cmnd->SCp.ptr),
#endif
Cmnd->request_bufflen,
scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
isp_outw(out_ptr, host, MBOX5);
(*Cmnd->scsi_done)(Cmnd);
}
Changes in this patch to qlogicisp.c were as below. Looks suspciciously
close to the problem area to me, but I don't understand it enough to
say for sure (if this wasn't related to some SCSI subsystem change,
can I just revert out this section?)
M.
# drivers/scsi/qlogicisp.c 1.15 -> 1.17
diff -Nru a/drivers/scsi/qlogicisp.c b/drivers/scsi/qlogicisp.c
--- a/drivers/scsi/qlogicisp.c Mon Feb 3 21:31:47 2003
+++ b/drivers/scsi/qlogicisp.c Mon Feb 3 21:31:47 2003
@@ -802,7 +802,7 @@
ENTER("isp1020_queuecommand");
- host = Cmnd->host;
+ host = Cmnd->device->host;
hostdata = (struct isp1020_hostdata *) host->hostdata;
Cmnd->scsi_done = done;
@@ -853,8 +853,8 @@
cmd->hdr.entry_type = ENTRY_COMMAND;
cmd->hdr.entry_cnt = 1;
- cmd->target_lun = Cmnd->lun;
- cmd->target_id = Cmnd->target;
+ cmd->target_lun = Cmnd->device->lun;
+ cmd->target_id = Cmnd->device->id;
cmd->cdb_length = cpu_to_le16(Cmnd->cmd_len);
cmd->control_flags = cpu_to_le16(CFLAG_READ | CFLAG_WRITE);
cmd->time_out = cpu_to_le16(30);
@@ -1175,7 +1175,7 @@
ENTER("isp1020_abort");
- host = Cmnd->host;
+ host = Cmnd->device->host;
hostdata = (struct isp1020_hostdata *) host->hostdata;
for (i = 0; i < QLOGICISP_REQ_QUEUE_LEN + 1; i++)
@@ -1186,7 +1186,7 @@
isp1020_disable_irqs(host);
param[0] = MBOX_ABORT;
- param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun;
+ param[1] = (((u_short) Cmnd->device->id) << 8) | Cmnd->device->lun;
param[2] = cmd_cookie >> 16;
param[3] = cmd_cookie & 0xffff;
@@ -1214,7 +1214,7 @@
ENTER("isp1020_reset");
- host = Cmnd->host;
+ host = Cmnd->device->host;
hostdata = (struct isp1020_hostdata *) host->hostdata;
param[0] = MBOX_BUS_RESET;
>> Unable to handle kernel NULL pointer dereference at virtual address
>> 0000013c printing eip:
>> c01c1986
>> *pde = 00000000
>> Oops: 0002
>> CPU: 3
>> EIP: 0060:[<c01c1986>] Not tainted
>> EFLAGS: 00010046
>> EIP is at isp1020_intr_handler+0x1e6/0x290
>> eax: 00000000 ebx: f7c42080 ecx: 00000000 edx: 00000054
>> esi: 00000002 edi: 00000013 ebp: 00000000 esp: f7f97efc
>> ds: 007b es: 007b ss: 0068
>> Process swapper (pid: 0, threadinfo=f7f96000 task=f7f9d240)
>> Stack: f7c42080 f7c52800 00000002 00000013 f7f97f80 00000003 00000003
>> f7c5289c f7c52800 c01c1791 00000013 f7c52800 f7f97f80 f7ffe1e0
>> 24000001 c010a815 00000013 f7c52800 f7f97f80 c028fa60 00000260
>> 00000013 f7f97f78 c010a9e6 Call Trace:
>> [<c01c1791>] do_isp1020_intr_handler+0x25/0x34
>> [<c010a815>] handle_IRQ_event+0x29/0x4c
>> [<c010a9e6>] do_IRQ+0x96/0x100
>> [<c0106ca0>] default_idle+0x0/0x34
>> [<c01094a8>] common_interrupt+0x18/0x20
>> [<c0106ca0>] default_idle+0x0/0x34
>> [<c0106cc9>] default_idle+0x29/0x34
>> [<c0106d53>] cpu_idle+0x37/0x48
>> [<c0119d21>] printk+0x149/0x160
>>
>> Code: 89 85 3c 01 00 00 83 c4 04 eb 0a c7 85 3c 01 00 00 00 00 07
>> <0>Kernel panic: Aiee, killing interrupt handler!
>> In interrupt handler - not syncing
Dump of assembler code for function isp1020_intr_handler:
0xc01c18e0 <isp1020_intr_handler>: sub $0x10,%esp
0xc01c18e3 <isp1020_intr_handler+3>: push %ebp
0xc01c18e4 <isp1020_intr_handler+4>: push %edi
0xc01c18e5 <isp1020_intr_handler+5>: push %esi
0xc01c18e6 <isp1020_intr_handler+6>: push %ebx
0xc01c18e7 <isp1020_intr_handler+7>: mov 0x28(%esp,1),%eax
0xc01c18eb <isp1020_intr_handler+11>: mov %eax,0x1c(%esp,1)
0xc01c18ef <isp1020_intr_handler+15>: mov 0x1c(%esp,1),%edx
0xc01c18f3 <isp1020_intr_handler+19>: add $0x9c,%eax
0xc01c18f8 <isp1020_intr_handler+24>: mov %eax,0x18(%esp,1)
0xc01c18fc <isp1020_intr_handler+28>: mov 0x9c(%edx),%eax
0xc01c1902 <isp1020_intr_handler+34>: test %eax,%eax
0xc01c1904 <isp1020_intr_handler+36>:
je 0xc01c1910 <isp1020_intr_handler+48>
0xc01c1906 <isp1020_intr_handler+38>: movzwl 0xa(%eax),%eax
0xc01c190a <isp1020_intr_handler+42>:
jmp 0xc01c191c <isp1020_intr_handler+60>
0xc01c190c <isp1020_intr_handler+44>: lea 0x0(%esi,1),%esi
0xc01c1910 <isp1020_intr_handler+48>: mov 0x1c(%esp,1),%eax
0xc01c1914 <isp1020_intr_handler+52>: mov 0x6c(%eax),%edx
0xc01c1917 <isp1020_intr_handler+55>: add $0xa,%edx
0xc01c191a <isp1020_intr_handler+58>: in (%dx),%ax
0xc01c191c <isp1020_intr_handler+60>: test $0x4,%al
0xc01c191e <isp1020_intr_handler+62>:
je 0xc01c1b66 <isp1020_intr_handler+646>
0xc01c1924 <isp1020_intr_handler+68>: mov 0x1c(%esp,1),%edx
0xc01c1928 <isp1020_intr_handler+72>: mov 0x9c(%edx),%eax
0xc01c192e <isp1020_intr_handler+78>: test %eax,%eax
0xc01c1930 <isp1020_intr_handler+80>:
je 0xc01c1938 <isp1020_intr_handler+88>
0xc01c1932 <isp1020_intr_handler+82>: movzwl 0x7a(%eax),%eax
0xc01c1936 <isp1020_intr_handler+86>:
jmp 0xc01c1944 <isp1020_intr_handler+100>
0xc01c1938 <isp1020_intr_handler+88>: mov 0x1c(%esp,1),%eax
0xc01c193c <isp1020_intr_handler+92>: mov 0x6c(%eax),%edx
0xc01c193f <isp1020_intr_handler+95>: add $0x7a,%edx
0xc01c1942 <isp1020_intr_handler+98>: in (%dx),%ax
0xc01c1944 <isp1020_intr_handler+100>: mov 0x1c(%esp,1),%edx
0xc01c1948 <isp1020_intr_handler+104>: movzwl %ax,%eax
0xc01c194b <isp1020_intr_handler+107>: mov %eax,0x14(%esp,1)
0xc01c194f <isp1020_intr_handler+111>: mov $0x7000,%ecx
0xc01c1954 <isp1020_intr_handler+116>: mov 0x9c(%edx),%eax
0xc01c195a <isp1020_intr_handler+122>: test %eax,%eax
0xc01c195c <isp1020_intr_handler+124>:
je 0xc01c1967 <isp1020_intr_handler+135>
0xc01c195e <isp1020_intr_handler+126>: mov %cx,0xc0(%eax)
0xc01c1965 <isp1020_intr_handler+133>:
jmp 0xc01c1978 <isp1020_intr_handler+152>
0xc01c1967 <isp1020_intr_handler+135>: mov 0x1c(%esp,1),%eax
0xc01c196b <isp1020_intr_handler+139>: mov 0x6c(%eax),%edx
0xc01c196e <isp1020_intr_handler+142>: add $0xc0,%edx
0xc01c1974 <isp1020_intr_handler+148>: mov %ecx,%eax
0xc01c1976 <isp1020_intr_handler+150>: out %ax,(%dx)
0xc01c1978 <isp1020_intr_handler+152>: mov 0x1c(%esp,1),%edx
0xc01c197c <isp1020_intr_handler+156>: mov 0x9c(%edx),%eax
0xc01c1982 <isp1020_intr_handler+162>: test %eax,%eax
0xc01c1984 <isp1020_intr_handler+164>:
je 0xc01c1990 <isp1020_intr_handler+176>
0xc01c1986 <isp1020_intr_handler+166>: movzwl 0xc(%eax),%eax
0xc01c198a <isp1020_intr_handler+170>:
jmp 0xc01c199c <isp1020_intr_handler+188>
0xc01c198c <isp1020_intr_handler+172>: lea 0x0(%esi,1),%esi
0xc01c1990 <isp1020_intr_handler+176>: mov 0x1c(%esp,1),%eax
0xc01c1994 <isp1020_intr_handler+180>: mov 0x6c(%eax),%edx
0xc01c1997 <isp1020_intr_handler+183>: add $0xc,%edx
0xc01c199a <isp1020_intr_handler+186>: in (%dx),%ax
0xc01c199c <isp1020_intr_handler+188>: test $0x1,%al
0xc01c199e <isp1020_intr_handler+190>:
je 0xc01c1a34 <isp1020_intr_handler+340>
0xc01c19a4 <isp1020_intr_handler+196>: mov 0x1c(%esp,1),%edx
0xc01c19a8 <isp1020_intr_handler+200>: mov 0x9c(%edx),%eax
0xc01c19ae <isp1020_intr_handler+206>: test %eax,%eax
0xc01c19b0 <isp1020_intr_handler+208>:
je 0xc01c19b8 <isp1020_intr_handler+216>
0xc01c19b2 <isp1020_intr_handler+210>: movzwl 0x70(%eax),%eax
0xc01c19b6 <isp1020_intr_handler+214>:
jmp 0xc01c19c4 <isp1020_intr_handler+228>
0xc01c19b8 <isp1020_intr_handler+216>: mov 0x1c(%esp,1),%eax
0xc01c19bc <isp1020_intr_handler+220>: mov 0x6c(%eax),%edx
0xc01c19bf <isp1020_intr_handler+223>: add $0x70,%edx
0xc01c19c2 <isp1020_intr_handler+226>: in (%dx),%ax
0xc01c19c4 <isp1020_intr_handler+228>: movzwl %ax,%eax
0xc01c19c7 <isp1020_intr_handler+231>: cmp $0x4006,%eax
0xc01c19cc <isp1020_intr_handler+236>:
jg 0xc01c19e5 <isp1020_intr_handler+261>
0xc01c19ce <isp1020_intr_handler+238>: cmp $0x4005,%eax
0xc01c19d3 <isp1020_intr_handler+243>:
jge 0xc01c1a03 <isp1020_intr_handler+291>
0xc01c19d5 <isp1020_intr_handler+245>: cmp $0x4002,%eax
0xc01c19da <isp1020_intr_handler+250>:
jg 0xc01c1a10 <isp1020_intr_handler+304>
0xc01c19dc <isp1020_intr_handler+252>: cmp $0x4001,%eax
0xc01c19e1 <isp1020_intr_handler+257>:
jl 0xc01c1a10 <isp1020_intr_handler+304>
0xc01c19e3 <isp1020_intr_handler+259>:
jmp 0xc01c1a03 <isp1020_intr_handler+291>
0xc01c19e5 <isp1020_intr_handler+261>: cmp $0x8001,%eax
0xc01c19ea <isp1020_intr_handler+266>:
je 0xc01c19f3 <isp1020_intr_handler+275>
0xc01c19ec <isp1020_intr_handler+268>: cmp $0x8006,%eax
0xc01c19f1 <isp1020_intr_handler+273>:
jne 0xc01c1a10 <isp1020_intr_handler+304>
0xc01c19f3 <isp1020_intr_handler+275>: mov 0x18(%esp,1),%edx
0xc01c19f7 <isp1020_intr_handler+279>: movl $0x1,0xf8(%edx)
0xc01c1a01 <isp1020_intr_handler+289>:
jmp 0xc01c1a10 <isp1020_intr_handler+304>
0xc01c1a03 <isp1020_intr_handler+291>: push $0xc0246f20
0xc01c1a08 <isp1020_intr_handler+296>: call 0xc0119bd8 <printk>
0xc01c1a0d <isp1020_intr_handler+301>: add $0x4,%esp
0xc01c1a10 <isp1020_intr_handler+304>: mov 0x1c(%esp,1),%edx
0xc01c1a14 <isp1020_intr_handler+308>: mov 0x9c(%edx),%eax
0xc01c1a1a <isp1020_intr_handler+314>: test %eax,%eax
0xc01c1a1c <isp1020_intr_handler+316>:
je 0xc01c1a26 <isp1020_intr_handler+326>
0xc01c1a1e <isp1020_intr_handler+318>: movw $0x0,0xc(%eax)
0xc01c1a24 <isp1020_intr_handler+324>:
jmp 0xc01c1a34 <isp1020_intr_handler+340>
0xc01c1a26 <isp1020_intr_handler+326>: mov 0x1c(%esp,1),%eax
0xc01c1a2a <isp1020_intr_handler+330>: mov 0x6c(%eax),%edx
0xc01c1a2d <isp1020_intr_handler+333>: add $0xc,%edx
0xc01c1a30 <isp1020_intr_handler+336>: xor %eax,%eax
0xc01c1a32 <isp1020_intr_handler+338>: out %ax,(%dx)
0xc01c1a34 <isp1020_intr_handler+340>: mov 0x18(%esp,1),%edx
0xc01c1a38 <isp1020_intr_handler+344>: mov 0x14(%esp,1),%eax
0xc01c1a3c <isp1020_intr_handler+348>: mov 0xf4(%edx),%edx
0xc01c1a42 <isp1020_intr_handler+354>: mov %edx,0x10(%esp,1)
0xc01c1a46 <isp1020_intr_handler+358>: cmp %eax,%edx
0xc01c1a48 <isp1020_intr_handler+360>:
je 0xc01c1b58 <isp1020_intr_handler+632>
0xc01c1a4e <isp1020_intr_handler+366>: mov %esi,%esi
0xc01c1a50 <isp1020_intr_handler+368>: mov 0x10(%esp,1),%ebx
0xc01c1a54 <isp1020_intr_handler+372>: mov 0x18(%esp,1),%edx
0xc01c1a58 <isp1020_intr_handler+376>: mov 0x18(%esp,1),%eax
0xc01c1a5c <isp1020_intr_handler+380>: shl $0x6,%ebx
0xc01c1a5f <isp1020_intr_handler+383>: add $0xfc,%eax
0xc01c1a64 <isp1020_intr_handler+388>: add 0xe8(%edx),%ebx
0xc01c1a6a <isp1020_intr_handler+394>: incl 0x10(%esp,1)
0xc01c1a6e <isp1020_intr_handler+398>: andl $0x7,0x10(%esp,1)
0xc01c1a73 <isp1020_intr_handler+403>: mov 0x4(%ebx),%edx
0xc01c1a76 <isp1020_intr_handler+406>: shl $0x2,%edx
0xc01c1a79 <isp1020_intr_handler+409>: mov (%edx,%eax,1),%ebp
0xc01c1a7c <isp1020_intr_handler+412>: movl $0x0,(%edx,%eax,1)
0xc01c1a83 <isp1020_intr_handler+419>: movzwl 0xa(%ebx),%eax
0xc01c1a87 <isp1020_intr_handler+423>: add $0xfffffffc,%ax
0xc01c1a8b <isp1020_intr_handler+427>: cmp $0x1,%ax
0xc01c1a8f <isp1020_intr_handler+431>:
jbe 0xc01c1a97 <isp1020_intr_handler+439>
0xc01c1a91 <isp1020_intr_handler+433>: testb $0x8,0xe(%ebx)
0xc01c1a95 <isp1020_intr_handler+437>:
je 0xc01c1aa5 <isp1020_intr_handler+453>
0xc01c1a97 <isp1020_intr_handler+439>: mov 0x18(%esp,1),%eax
0xc01c1a9b <isp1020_intr_handler+443>: movl $0x1,0xf8(%eax)
0xc01c1aa5 <isp1020_intr_handler+453>: testb $0x20,0xd(%ebx)
0xc01c1aa9 <isp1020_intr_handler+457>:
je 0xc01c1abb <isp1020_intr_handler+475>
0xc01c1aab <isp1020_intr_handler+459>: lea 0xc0(%ebp),%edi
0xc01c1ab1 <isp1020_intr_handler+465>: lea 0x20(%ebx),%esi
0xc01c1ab4 <isp1020_intr_handler+468>: mov $0x10,%ecx
0xc01c1ab9 <isp1020_intr_handler+473>: repz movsl %ds:(%esi),%es:(%edi)
0xc01c1abb <isp1020_intr_handler+475>: cmpb $0x3,(%ebx)
0xc01c1abe <isp1020_intr_handler+478>:
jne 0xc01c1ad1 <isp1020_intr_handler+497>
0xc01c1ac0 <isp1020_intr_handler+480>: push %ebx
0xc01c1ac1 <isp1020_intr_handler+481>:
call 0xc01c1b70 <isp1020_return_status>
0xc01c1ac6 <isp1020_intr_handler+486>: mov %eax,0x13c(%ebp)
0xc01c1acc <isp1020_intr_handler+492>: add $0x4,%esp
0xc01c1acf <isp1020_intr_handler+495>:
jmp 0xc01c1adb <isp1020_intr_handler+507>
0xc01c1ad1 <isp1020_intr_handler+497>: movl $0x70000,0x13c(%ebp)
0xc01c1adb <isp1020_intr_handler+507>: cmpw $0x0,0x9e(%ebp)
0xc01c1ae3 <isp1020_intr_handler+515>:
je 0xc01c1af5 <isp1020_intr_handler+533>
0xc01c1ae5 <isp1020_intr_handler+517>: cmpb $0x3,0x52(%ebp)
0xc01c1ae9 <isp1020_intr_handler+521>:
jne 0xc01c1b10 <isp1020_intr_handler+560>
0xc01c1aeb <isp1020_intr_handler+523>: ud2a
0xc01c1aed <isp1020_intr_handler+525>: inc %ebp
0xc01c1aee <isp1020_intr_handler+526>: add %ch,%bl
0xc01c1af0 <isp1020_intr_handler+528>: out %al,(%dx)
0xc01c1af1 <isp1020_intr_handler+529>: and %eax,%eax
0xc01c1af3 <isp1020_intr_handler+531>:
jmp 0xc01c1b10 <isp1020_intr_handler+560>
0xc01c1af5 <isp1020_intr_handler+533>: cmpl $0x0,0x64(%ebp)
0xc01c1af9 <isp1020_intr_handler+537>:
je 0xc01c1b10 <isp1020_intr_handler+560>
0xc01c1afb <isp1020_intr_handler+539>: cmpb $0x3,0x52(%ebp)
0xc01c1aff <isp1020_intr_handler+543>:
jne 0xc01c1b10 <isp1020_intr_handler+560>
0xc01c1b01 <isp1020_intr_handler+545>: ud2a
0xc01c1b03 <isp1020_intr_handler+547>: sbb $0x0,%al
0xc01c1b05 <isp1020_intr_handler+549>:
jmp 0xc01c1af5 <isp1020_intr_handler+533>
0xc01c1b07 <isp1020_intr_handler+551>: and %eax,%eax
0xc01c1b09 <isp1020_intr_handler+553>: lea 0x0(%esi,1),%esi
0xc01c1b10 <isp1020_intr_handler+560>: mov 0x1c(%esp,1),%edx
0xc01c1b14 <isp1020_intr_handler+564>: mov 0x10(%esp,1),%ecx
0xc01c1b18 <isp1020_intr_handler+568>: mov 0x9c(%edx),%eax
0xc01c1b1e <isp1020_intr_handler+574>: test %eax,%eax
0xc01c1b20 <isp1020_intr_handler+576>:
je 0xc01c1b30 <isp1020_intr_handler+592>
0xc01c1b22 <isp1020_intr_handler+578>: mov %ecx,%edx
0xc01c1b24 <isp1020_intr_handler+580>: mov %dx,0x7a(%eax)
0xc01c1b28 <isp1020_intr_handler+584>:
jmp 0xc01c1b3e <isp1020_intr_handler+606>
0xc01c1b2a <isp1020_intr_handler+586>: lea 0x0(%esi),%esi
0xc01c1b30 <isp1020_intr_handler+592>: mov 0x1c(%esp,1),%eax
0xc01c1b34 <isp1020_intr_handler+596>: mov 0x6c(%eax),%edx
0xc01c1b37 <isp1020_intr_handler+599>: add $0x7a,%edx
0xc01c1b3a <isp1020_intr_handler+602>: mov %ecx,%eax
0xc01c1b3c <isp1020_intr_handler+604>: out %ax,(%dx)
0xc01c1b3e <isp1020_intr_handler+606>: push %ebp
0xc01c1b3f <isp1020_intr_handler+607>: mov 0x108(%ebp),%eax
0xc01c1b45 <isp1020_intr_handler+613>: call *%eax
0xc01c1b47 <isp1020_intr_handler+615>: add $0x4,%esp
0xc01c1b4a <isp1020_intr_handler+618>: mov 0x14(%esp,1),%edx
0xc01c1b4e <isp1020_intr_handler+622>: cmp %edx,0x10(%esp,1)
0xc01c1b52 <isp1020_intr_handler+626>:
jne 0xc01c1a50 <isp1020_intr_handler+368>
0xc01c1b58 <isp1020_intr_handler+632>: mov 0x10(%esp,1),%edx
0xc01c1b5c <isp1020_intr_handler+636>: mov 0x18(%esp,1),%eax
0xc01c1b60 <isp1020_intr_handler+640>: mov %edx,0xf4(%eax)
0xc01c1b66 <isp1020_intr_handler+646>: pop %ebx
0xc01c1b67 <isp1020_intr_handler+647>: pop %esi
0xc01c1b68 <isp1020_intr_handler+648>: pop %edi
0xc01c1b69 <isp1020_intr_handler+649>: pop %ebp
0xc01c1b6a <isp1020_intr_handler+650>: add $0x10,%esp
0xc01c1b6d <isp1020_intr_handler+653>: ret
End of assembler dump.
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