Tasklet with IRQs disabled + bug :
-------------------------------
llm07:/home/murali/dtt_tools # ./ttutils set -p TASKLET -t bug -c 100
llm07:/proc # ls -l vmcore
-r-------- 1 root root 5233509408 Mar 29 05:18 vmcore
llm07:/proc # gdb /home/murali/linux-2.6.16/vmlinux-1
vmlinux-16M vmlinux-1M
llm07:/proc # gdb /home/murali/linux-2.6.16/vmlinux-1M vmcore
GNU gdb 6.1
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This GDB was configured as "x86_64-suse-linux"...Using host libthread_db library "/lib64/tls/libthread_db.so.1".
#0 0xffffffff80392ae9 in serial_in (up=0xffffffff80719380, offset=5) at io.h:81
81 io.h: No such file or directory.
in io.h
(gdb) info registers
rax 0xffffff60 4294967136
rbx 0xffffffff80719380 -2140040320
rcx 0x0 0
rdx 0x3fd 1021
rsi 0x5 5
rdi 0xffffffff80719380 -2140040320
rbp 0xffffffff80719458 0xffffffff80719458
rsp 0xffffffff806a4ee0 0xffffffff806a4ee0
r8 0xffffffff80746000 -2139856896
r9 0xffff8100b4487b48 -139634952078520
r10 0xffff8100b4487b48 -139634952078520
r11 0x0 0
r12 0xffffffff807184c0 -2140044096
r13 0x0 0
r14 0x0 0
r15 0x0 0
rip 0xffffffff80392ae9 0xffffffff80392ae9 <serial_in+85>
eflags 0x202 514
cs 0x10 16
ss 0x18 24
ds 0x18 24
es 0x18 24
fs 0x0 0
gs 0x0 0
(gdb) info threads
* 2 process 0 0xffffffff80392ae9 in serial_in (up=0xffffffff80719380, offset=5) at io.h:81
* 1 process 0 0xffffffff80392ae9 in serial_in (up=0xffffffff80719380, offset=5) at io.h:81
(gdb) btr
Undefined command: "btr". Try "help".
(gdb) bt
#0 0xffffffff80392ae9 in serial_in (up=0xffffffff80719380, offset=5) at io.h:81
#1 0xffffffff80394c73 in serial8250_interrupt (irq=4, dev_id=0xffffffff807184c0,
regs=0xffffffff80747f08) at drivers/serial/8250.c:1278
#2 0xffffffff80254070 in INT_HW_IRQ_EN_hook () at kernel/irq/handle.c:91
#3 0xffffffff80254155 in INT_HARDWARE_ENTRY_hook () at kernel/irq/handle.c:177
#4 0xffffffff8020bc28 in do_IRQ (regs=0xffffffff80747f08) at arch/x86_64/kernel/irq.c:100
#5 0xffffffff80209d62 in common_interrupt () at cpumask.h:183
#6 0xffffffff80747f08 in init_thread_union ()
#7 0x0000000000000000 in ?? ()
#8 0x0000000000000000 in ?? ()
#9 0x0000000000000000 in ?? ()