Block I/O + Panic :
------------------
llm07:/home/murali/dtt_tools # ./ttutils set -p FS_DEVRW -t panic -c 50
llm07:/proc # ls -l vmcore
-r-------- 1 root root 5233509408 Mar 29 02:30 vmcore
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/lib.#0 0xffffffff80251297 in crash_kexec (regs=0x0) at kexec.h:64
64 kexec.h: No such file or directory.
in kexec.h
(gdb) info threads
2 process 0 0xffffffff80251297 in crash_kexec (regs=0x0) at kexec.h:64
* 1 process 11215 0xffffffff80251297 in crash_kexec (regs=0x0) at kexec.h:64
(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 0xffff8100b4311b08 in ?? ()
#4 0xffffffff8027b984 in FS_DEVRW_hook () at fs/buffer.c:2887
#5 0xffffffff802c85d5 in search_by_key (p_s_sb=0xffff81000cd34000,
p_s_key=0xffff8100b4311d98, p_s_search_path=0xffff8100b4311d18,
n_stop_level=1) at fs/reiserfs/stree.c:671
#6 0xffffffff802b8a0a in reiserfs_update_sd_size (th=0xffff8100b4311df8,
inode=0xffff81000cd39968, size=114837) at fs/reiserfs/inode.c:1342
#7 0xffffffff802c139a in reiserfs_dirty_inode (inode=0xffff81000cd39968)
at reiserfs_fs.h:1906
#8 0xffffffff80297e59 in __mark_inode_dirty (inode=0xffff81000cd39968,
flags=1) at fs/fs-writeback.c:65
#9 0xffffffff8028eaa9 in touch_atime (mnt=0x0, dentry=0x246) at fs.h:1124
#10 0xffffffff802556f5 in generic_file_mmap (file=0x0, vma=0xffff8100b81c9dd0)
at fs.h:1143
#11 0xffffffff802663a2 in do_mmap_pgoff (file=0xffff8100babdc1c0,
addr=47823946788864, len=118784, prot=Variable "prot" is not available.
) at mm/mmap.c:1068
#12 0xffffffff8020ffcb in sys_mmap (addr=0, len=114837, prot=1, flags=2, fd=Variable "fd" is not.)
at arch/x86_64/kernel/sys_x86_64.c:59
---Type <return> to continue, or q <return> to quit---
#13 0xffffffff8020979a in system_call () at cpumask.h:183
#14 0x0000000000000246 in ?? ()
#15 0x0000000000000002 in ?? ()
#16 0x0000000000000000 in ?? ()
#17 0x0000000000000003 in ?? ()
#18 0x0000000000000009 in ?? ()
#19 0x00007fffc94fb190 in ?? ()
#20 0x0000000000000001 in ?? ()
#21 0x000000000001c095 in ?? ()
#22 0x0000000000000000 in ?? ()
#23 0x0000000000000009 in ?? ()
#24 0x00002b7ee15bc4fc in ?? ()
#25 0x0000000000000033 in ?? ()
#26 0x0000000000010202 in ?? ()
#27 0x00007fffc94faf80 in ?? ()
#28 0x000000000000002b in ?? ()
#29 0x0000000f00044b7f in ?? ()
#30 0x003c634a000001b3 in ?? ()
#31 0x00159eea00208006 in ?? ()
#32 0x000d0004003c0217 in ?? ()
#33 0x00418525000d0001 in ?? ()
#34 0x000d000500108002 in ?? ()
#35 0x0041858f000d0002 in ?? ()
---Type <return> to continue, or q <return> to quit---q
Quit
(gdb) info registers
rax 0x0 0
rbx 0xffff81000cd34c00 -139637761553408
rcx 0xffffffff805aaaa8 -2141541720
rdx 0xffffffff805aaaa8 -2141541720
rsi 0x246 582
rdi 0x0 0
rbp 0x0 0x0
rsp 0xffff8100b4311978 0xffff8100b4311978
r8 0xffffffff805aaaa8 -2141541720
r9 0x0 0
r10 0x0 0
r11 0xffff8100b4311948 -139634953610936
r12 0x0 0
r13 0x1 1
r14 0xffff8100b4311ba0 -139634953610336
r15 0xffff8100b4311d98 -139634953609832
rip 0xffffffff80251297 0xffffffff80251297 <crash_kexec+185>
eflags 0x246 582
cs 0x10 16
ss 0x18 24
ds 0x0 0
es 0x0 0
fs 0x0 0
---Type <return> to continue, or q <return> to quit---q
Quit
(gdb)