SCSI command + bug :
---------------------
llm07:/home/murali/dtt_tools # ./ttutils set -p SCSI_DISPATCH_CMD -t bug -c 100
llm07:/proc # gdb /home/murali/linux-2.6.16/vmlinux-1M vmcore
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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 0xffffffff805001a2 in cond_resched () at kernel/sched.c:4336
4336 {
(gdb) info threads
2 process 11295 0xffffffff80251297 in crash_kexec (regs=0x0) at kexec.h:64
* 1 process 2743 0xffffffff805001a2 in cond_resched () at kernel/sched.c:4336
(gdb) info registers
rax 0x53ca 21450
rbx 0x0 0
rcx 0x53c9 21449
rdx 0x3c 60
rsi 0x202 514
rdi 0xffffffff80231f0b -2145181941
rbp 0x20000 0x20000
rsp 0xffff81013bd1be58 0xffff81013bd1be58
r8 0x1 1
r9 0x0 0
r10 0x286 646
r11 0x0 0
r12 0x0 0
r13 0x506e20 5271072
r14 0x0 0
r15 0x0 0
rip 0xffffffff805001a2 0xffffffff805001a2 <cond_resched+1>
eflags 0x246 582
cs 0x10 16
ss 0x18 24
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
(gdb) bt
#0 0xffffffff805001a2 in cond_resched () at kernel/sched.c:4336
#1 0xffffffff80231f59 in do_syslog (type=Variable "type" is not available.
) at kernel/printk.c:221
#2 0xffffffff802ab68b in kmsg_read (file=Variable "file" is not available.
) at fs/proc/kmsg.c:38
#3 0xffffffff8027941c in vfs_read (file=0xffff8100bbb078c0,
buf=0x506e20 <Address 0x506e20 out of bounds>, count=Variable "count" is not available.
) at fs/read_write.c:264
#4 0xfffffffffffffff7 in ?? ()
#5 0xffffffff80279578 in sys_read (fd=Variable "fd" is not available.
) at fs/read_write.c:351
#6 0xffffffff8020979a in system_call () at cpumask.h:183
#7 0x0000000000000246 in ?? ()
#8 0x0000000000000001 in ?? ()
#9 0x00002af6e7175560 in ?? ()
#10 0x0000000000020000 in ?? ()
#11 0x0000000000000000 in ?? ()
#12 0x00000000000003c4 in ?? ()
#13 0x0000000000020000 in ?? ()
#14 0x0000000000506e20 in ?? ()
#15 0x0000000000000000 in ?? ()
#16 0x0000000000000000 in ?? ()
#17 0x00002af6e72231e2 in ?? ()
#18 0x0000000000000033 in ?? ()
#19 0x0000000000010216 in ?? ()
#20 0x00007fffc3a495d8 in ?? ()
#21 0x000000000000002b in ?? ()
#22 0x7f0a102302000014 in ?? ()
#23 0x0018007c18000a66 in ?? ()
#24 0x0307100a20230200 in ?? ()
#25 0x02000015cf7d1800 in ?? ()
#26 0x180005fab40a2023 in ?? ()
---Type <return> to continue, or q <return> to quit---q
Quit
(gdb) thread 2
[Switching to thread 2 (process 11295)]#0 0xffffffff80251297 in crash_kexec (regs=0x0)
at kexec.h:64
64 kexec.h: No such file or directory.
in kexec.h
(gdb) bt
#0 0xffffffff80251297 in crash_kexec (regs=0x0) at kexec.h:64
#1 0xffffffff80231162 in panic (fmt=0xffffffff80576308 "dumptest") at kernel/panic.c:89
#2 0xffffffff80472d3f in cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:306
#3 0x0000000000000000 in ?? ()
#4 0xffffffff803efc69 in SCSI_DISPATCH_CMD_hook () at drivers/scsi/scsi.c:642
#5 0xffff8100bd534800 in ?? ()
#6 0xffff81013e1a15c0 in ?? ()
#7 0xffffffff803f3dfc in scsi_request_fn (q=0xffff81013dd76760) at drivers/scsi/scsi_lib.c:1632
#8 0xffffffff80335bd9 in __generic_unplug_device (q=0xffff8100bd414000)
at block/ll_rw_blk.c:1596
#9 0xffffffff80335f5b in generic_unplug_device (q=0xffff8100bd414000) at block/ll_rw_blk.c:1615
#10 0xffffffff80332bf3 in blk_backing_dev_unplug (bdi=Variable "bdi" is not available.
) at block/ll_rw_blk.c:1632
#11 0xffffffff80279da5 in block_sync_page (page=0xffffffff805aaaa8) at blkdev.h:638
#12 0xffff81013fd313e0 in ?? ()
#13 0xffffffff80255ab1 in sync_page (word=0x0) at mm/filemap.c:170
#14 0xffff81013fd313e0 in ?? ()
#15 0xffffffff805009fa in __wait_on_bit_lock (wq=Variable "wq" is not available.
) at kernel/wait.c:188
#16 0xffffffff80255a6b in __lock_page (page=Variable "page" is not available.
) at mm/filemap.c:545
#17 0xffffffff80256623 in do_generic_mapping_read (mapping=0xffff8100b3aa23b0,
_ra=0xffff810139746c28, filp=0xffff810139746bc0, ppos=0xffff81013539ff50,
desc=0xffff81013539fdb8, actor=0xffffffff802557b1 <file_read_actor>) at pagemap.h:175
#18 0xffffffff80257cb0 in __generic_file_aio_read (iocb=Variable "iocb" is not available.
) at fs.h:1639
#19 0xffffffff80257e3b in generic_file_read (filp=Variable "filp" is not available.
) at mm/filemap.c:1122
#20 0xffffffff8027941c in vfs_read (file=0xffff810139746bc0,
buf=0x2b648ae27000 <Address 0x2b648ae27000 out of bounds>, count=Variable "count" is not available.
) at fs/read_write.c:264
#21 0xfffffffffffffff7 in ?? ()
#22 0xffffffff80279578 in sys_read (fd=Variable "fd" is not available.
) at fs/read_write.c:351
#23 0xffffffff8020979a in system_call () at cpumask.h:183
---Type <return> to continue, or q <return> to quit---
#24 0x0000000000000246 in ?? ()
#25 0x0000000000000000 in ?? ()
#26 0x00002b648b1496e0 in ?? ()
#27 0x00002b648b1496e0 in ?? ()
#28 0x0000000000000000 in ?? ()
#29 0x0000000000000000 in ?? ()
#30 0x0000000000020000 in ?? ()
#31 0x00002b648ae27000 in ?? ()
#32 0x0000000000000003 in ?? ()
#33 0x0000000000000000 in ?? ()
#34 0x00002b648afd41e2 in ?? ()
#35 0x0000000000000033 in ?? ()