`Block I/O + loop :
-----------------
System hung.
Forced dump by AltSysRq + C
llm07:/proc # ls -l vmcore
-r-------- 1 root root 5233509408 Apr 24 02:22 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/libthread_db.so.1".
#0 cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:317
warning: Source file is more recent than executable.
317 for (;;);
(gdb) bt
#0 cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:317
#1 0x0000000000000034 in ?? ()
#2 0xffffffff8027b984 in FS_DEVRW_hook () at fs/buffer.c:2887
#3 0xffffffff802c85d5 in search_by_key (p_s_sb=0xffff81000ccdd000, p_s_key=0xffff8100b805fb18,
p_s_search_path=0xffff8100b805fa98, n_stop_level=1) at fs/reiserfs/stree.c:671
#4 0xffffffff802b8a0a in reiserfs_update_sd_size (th=0xffff8100b805fb78,
inode=0xffff8100bb09b678, size=22321) at fs/reiserfs/inode.c:1342
#5 0xffffffff802c139a in reiserfs_dirty_inode (inode=0xffff8100bb09b678) at reiserfs_fs.h:1906
#6 0xffffffff80297e59 in __mark_inode_dirty (inode=0xffff8100bb09b678, flags=1)
at fs/fs-writeback.c:65
#7 0xffffffff8028eaa9 in touch_atime (mnt=0xffffffff805aaaa0, dentry=0x246) at fs.h:1124
#8 0xffffffff80256802 in do_generic_mapping_read (mapping=0xffff8100bb09b790,
_ra=0xffff81013595bc28, filp=0xffff81013595bbc0, ppos=0xffff8100b805fed0,
desc=0xffff8100b805fd38, actor=0xffffffff802557b1 <file_read_actor>) at fs.h:1143
#9 0xffffffff80257cb0 in __generic_file_aio_read (iocb=Variable "iocb" is not available.
) at fs.h:1639
#10 0xffffffff80257e3b in generic_file_read (filp=Variable "filp" is not available.
) at mm/filemap.c:1122
#11 0xffffffff8027941c in vfs_read (file=0xffff81013595bbc0,
buf=0xffff81013e30e800 "\177ELF\002\001\001", count=Variable "count" is not available.
) at fs/read_write.c:264
#12 0xffff81013e289000 in ?? ()
#13 0xffffffff80282dc8 in kernel_read (file=Variable "file" is not available.
) at fs/exec.c:523
#14 0xffffffff802830a0 in do_execve (filename=0x42 <Address 0x42 out of bounds>, argv=0x5b7000,
envp=0x5c9300, regs=0xffff8100b805ff58) at fs/exec.c:1189
#15 0xffffffff802083bf in sys_execve (name=Variable "name" is not available.
) at arch/x86_64/kernel/process.c:663
#16 0xffffffff80209bbe in stub_execve () at cpumask.h:183
#17 0x0000000000000000 in ?? ()
#18 0x00000000ffffffff in ?? ()
#19 0x00000000005c9300 in ?? ()
#20 0x00000000005acd40 in ?? ()
---Type <return> to continue, or q <return> to quit---
#21 0x00000000005b7000 in ?? ()
#22 0x0000000000000001 in ?? ()
#23 0x0000000000000202 in ?? ()
#24 0xffffffffffffffff in ?? ()
#25 0x00000000005b6ff0 in ?? ()
#26 0x00007fff3fc5b330 in ?? ()
#27 0x000000000000003b in ?? ()
#28 0xffffffffffffffff in ?? ()
#29 0x00000000005c9300 in ?? ()
#30 0x00000000005b7000 in ?? ()
#31 0x00000000005acd40 in ?? ()
#32 0x000000000000003b in ?? ()
#33 0x00002b1d6b499209 in ?? ()
#34 0x0000000000000033 in ?? ()
#35 0x0000000000000202 in ?? ()
#36 0x00007fff3fc5b3a8 in ?? ()
#37 0x000000000000002b in ?? ()
#38 0x000001b000000000 in ?? ()
#39 0x0000000000000121 in ?? ()
#40 0x000000000054e130 in ?? ()
#41 0x000000000054def0 in ?? ()
#42 0x0000002a78656473 in ?? ()
#43 0x0000000000000000 in ?? ()
#44 0x0000000000000000 in ?? ()
#45 0x0000000000000000 in ?? ()
#46 0x0000000000000000 in ?? ()
#47 0x0000000000000000 in ?? ()
#48 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---quti
Quit
(gdb) thread 2
[Switching to thread 2 (process 0)]#0 cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:317
317 for (;;);
(gdb) bt
#0 cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:317
#1 0x0000000000000034 in ?? ()
#2 0xffffffff8027b984 in FS_DEVRW_hook () at fs/buffer.c:2887
#3 0xffffffff802c85d5 in search_by_key (p_s_sb=0xffff81000ccdd000, p_s_key=0xffff8100b805fb18,
p_s_search_path=0xffff8100b805fa98, n_stop_level=1) at fs/reiserfs/stree.c:671
#4 0xffffffff802b8a0a in reiserfs_update_sd_size (th=0xffff8100b805fb78,
inode=0xffff8100bb09b678, size=22321) at fs/reiserfs/inode.c:1342
#5 0xffffffff802c139a in reiserfs_dirty_inode (inode=0xffff8100bb09b678) at reiserfs_fs.h:1906
#6 0xffffffff80297e59 in __mark_inode_dirty (inode=0xffff8100bb09b678, flags=1)
at fs/fs-writeback.c:65
#7 0xffffffff8028eaa9 in touch_atime (mnt=0xffffffff805aaaa0, dentry=0x246) at fs.h:1124
#8 0xffffffff80256802 in do_generic_mapping_read (mapping=0xffff8100bb09b790,
_ra=0xffff81013595bc28, filp=0xffff81013595bbc0, ppos=0xffff8100b805fed0,
desc=0xffff8100b805fd38, actor=0xffffffff802557b1 <file_read_actor>) at fs.h:1143
#9 0xffffffff80257cb0 in __generic_file_aio_read (iocb=Variable "iocb" is not available.
) at fs.h:1639
#10 0xffffffff80257e3b in generic_file_read (filp=Variable "filp" is not available.
) at mm/filemap.c:1122
#11 0xffffffff8027941c in vfs_read (file=0xffff81013595bbc0,
buf=0xffff81013e30e800 "\177ELF\002\001\001", count=Variable "count" is not available.
) at fs/read_write.c:264
#12 0xffff81013e289000 in ?? ()
#13 0xffffffff80282dc8 in kernel_read (file=Variable "file" is not available.
) at fs/exec.c:523
#14 0xffffffff802830a0 in do_execve (filename=0x42 <Address 0x42 out of bounds>, argv=0x5b7000,
envp=0x5c9300, regs=0xffff8100b805ff58) at fs/exec.c:1189
#15 0xffffffff802083bf in sys_execve (name=Variable "name" is not available.
) at arch/x86_64/kernel/process.c:663
#16 0xffffffff80209bbe in stub_execve () at cpumask.h:183
#17 0x0000000000000000 in ?? ()
#18 0x00000000ffffffff in ?? ()
#19 0x00000000005c9300 in ?? ()
#20 0x00000000005acd40 in ?? ()
---Type <return> to continue, or q <return> to quit---
#21 0x00000000005b7000 in ?? ()
#22 0x0000000000000001 in ?? ()
#23 0x0000000000000202 in ?? ()
#24 0xffffffffffffffff in ?? ()
#25 0x00000000005b6ff0 in ?? ()
#26 0x00007fff3fc5b330 in ?? ()
#27 0x000000000000003b in ?? ()
#28 0xffffffffffffffff in ?? ()
#29 0x00000000005c9300 in ?? ()
#30 0x00000000005b7000 in ?? ()
#31 0x00000000005acd40 in ?? ()
#32 0x000000000000003b in ?? ()
#33 0x00002b1d6b499209 in ?? ()
#34 0x0000000000000033 in ?? ()
#35 0x0000000000000202 in ?? ()
#36 0x00007fff3fc5b3a8 in ?? ()
#37 0x000000000000002b in ?? ()
#38 0x000001b000000000 in ?? ()
#39 0x0000000000000121 in ?? ()
#40 0x000000000054e130 in ?? ()
#41 0x000000000054def0 in ?? ()
#42 0x0000002a78656473 in ?? ()
#43 0x0000000000000000 in ?? ()
#44 0x0000000000000000 in ?? ()
#45 0x0000000000000000 in ?? ()
#46 0x0000000000000000 in ?? ()
#47 0x0000000000000000 in ?? ()
#48 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---quit
Quit
(gdb) info threads
* 2 process 0 cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:317
1 process 11200 cpoint_default_exit (hook=Variable "hook" is not available.
) at drivers/dtt/khdtt.c:317
(gdb) info registers
rax 0xd 13
rbx 0xffff8100b40eb1c8 -139634955865656
rcx 0xffffffff805aaaa8 -2141541720
rdx 0xffffffff805aaaa8 -2141541720
rsi 0x246 582
rdi 0xffffffff805aaaa0 -2141541728
rbp 0x0 0x0
rsp 0xffff8100b805f898 0xffff8100b805f898
r8 0xffffffff805aaaa8 -2141541720
r9 0x0 0
r10 0x1 1
r11 0xffff8100b805f7b8 -139634889328712
r12 0x0 0
r13 0x1 1
r14 0xffff8100b805f920 -139634889328352
r15 0xffff8100b805fb18 -139634889327848
rip 0xffffffff80472d74 0xffffffff80472d74 <cpoint_default_exit+87>
eflags 0x296 662
cs 0x10 16
ss 0x18 24
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
(gdb) bye
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(gdb) quit