On Thu, Apr 12, 2018 at 4:51 PM, Daniel Vacek <neelx@xxxxxxxxxx> wrote:
> On Thu, Apr 12, 2018 at 3:57 PM, Dave Anderson <anderson@xxxxxxxxxx> wrote:
>>
>> Daniel,
>>
>> Hmmm, when looking at your example, I just noticed it didn't use the -t argument,
>> but then looking at the code realized that the command defaults to rbtrees. I
>> actually don't think that was the original intent, but maybe that fact should
>> should be indicated in the help page? Although I can't come up with a compelling
>> argument why one should be the default. Either that, or -t should be enforced.
>
> Wow. I didn't know this was not intended. I thought that red-black is
> default as radix trees are only used in address_space of mapped files
> (page cache), AFAIK. I usually do not need to specify the type as all
> the major trees are red-black - being it cgroups, scheduler entities,
> memory mappings, inodes, you name it.
>
> Again, I didn't change anything with regards to this behavior.
>
>> Anyway, you probably didn't notice that all help page output is constrained
>> to 80 columns. Your example command alone is 162 bytes long, making it way
>> too confusing to figure out what the command is doing. Can you just show
>> the command output without piping it to an external command, or make a much
>> simpler example? And also keep it to 80 columns or less,
>
> I was thinking about wrapping the command to a second line but that's
> what terminal will do anyways if narrower so I left it that way. The
> rest of the pipe is just formatting/pretty printing the table.
> Otherwise the output would be waaaay toooo loooong and not really
> human readable. I do not think it can get any simpler than that. I can
> get rid of one of the columns though, it does not need to contain both
> the start and the end of the VMA range.
Or even get rid of the position? Something as simple as this:
crash> tree -ls vm_area_struct.vm_start -o vm_area_struct.vm_rb -r
mm_struct.mm_rb 0xffff880074b5be80 | paste - -
ffff88001f2c50e0 vm_start = 0x400000
ffff88001f2c5290 vm_start = 0xceb000
ffff880074bfc6c0 vm_start = 0xcec000
ffff88001f2c4bd0 vm_start = 0xd10000
ffff880074bfc948 vm_start = 0x1fe9000
ffff880036e54510 vm_start = 0x7ff6aa296000
ffff88001f2c5bd8 vm_start = 0x7ff6aa298000
ffff880036e54af8 vm_start = 0x7ff6aa497000
ffff880036e54f30 vm_start = 0x7ff6aa498000
ffff88000e06aa20 vm_start = 0x7ff6aa499000
ffff88000e06b368 vm_start = 0x7ff6ab95f000
...
ffff88001f2c5e60 vm_start = 0x7ff6bc1af000
ffff88001f2c4ca8 vm_start = 0x7ff6bc1b6000
ffff88001f2c5008 vm_start = 0x7ff6bc200000
ffff88001f2c5d88 vm_start = 0x7ff6bc205000
ffff880074bfd6c8 vm_start = 0x7ff6bc206000
ffff88001f2c4288 vm_start = 0x7ff6bc207000
ffff88001f2c4510 vm_start = 0x7ffc7a5fc000
ffff88001f2c5b00 vm_start = 0x7ffc7a6d1000
vs.
crash> tree -s vm_area_struct.vm_start -o vm_area_struct.vm_rb -r
mm_struct.mm_rb 0xffff880074b5be80 | paste - -
ffff88001f2c5a28 vm_start = 0x7ff6bbbb9000
ffff88001f2c55f0 vm_start = 0x7ff6bb252000
ffff88000e06a360 vm_start = 0x7ff6ac6c3000
ffff88001f2c4bd0 vm_start = 0xd10000
ffff88001f2c5290 vm_start = 0xceb000
ffff88001f2c50e0 vm_start = 0x400000
ffff880074bfc6c0 vm_start = 0xcec000
ffff88000e06b368 vm_start = 0x7ff6ab95f000
ffff88001f2c5bd8 vm_start = 0x7ff6aa298000
ffff880074bfc948 vm_start = 0x1fe9000
ffff880036e54510 vm_start = 0x7ff6aa296000
ffff880036e54f30 vm_start = 0x7ff6aa498000
ffff880036e54af8 vm_start = 0x7ff6aa497000
ffff88000e06aa20 vm_start = 0x7ff6aa499000
ffff88000e06ae58 vm_start = 0x7ff6ac1df000
ffff88000e06ba28 vm_start = 0x7ff6abefc000
ffff88000e06a6c0 vm_start = 0x7ff6ac41b000
ffff88001f2c4000 vm_start = 0x7ff6bac75000
ffff88000e06bd88 vm_start = 0x7ff6b2d00000
ffff88000e06b440 vm_start = 0x7ff6b28de000
...
ffff880074bfd6c8 vm_start = 0x7ff6bc206000
ffff88001f2c4510 vm_start = 0x7ffc7a5fc000
ffff88001f2c5b00 vm_start = 0x7ffc7a6d1000
That would work, right? Though even with the position it may fit to
80... Still I do not see the point.
--nX
> As an added value it also teaches eventual readers some advanced usage
> techniques in general so I believe it can be useful. There is enough
> simple examples already. Would you rather prefer something like this?
>
> crash> task -R mm
> PID: 28682 TASK: ffff880036d4af10 CPU: 0 COMMAND: "crash"
> mm = 0xffff880074b5be80,
>
> crash> tree -lp -o vm_area_struct.vm_rb -r mm_struct.mm_rb 0xffff880074b5be80
> ffff88001f2c50e0
> position: root/l/l/l/l/l
> ffff88001f2c5290
> position: root/l/l/l/l
> ffff880074bfc6c0
> position: root/l/l/l/l/r
> ffff88001f2c4bd0
> position: root/l/l/l
> ffff880074bfc948
> position: root/l/l/l/r/l/l
> ffff880036e54510
> position: root/l/l/l/r/l/l/r
> ffff88001f2c5bd8
> position: root/l/l/l/r/l
> ffff880036e54af8
> position: root/l/l/l/r/l/r/l
> ffff880036e54f30
> position: root/l/l/l/r/l/r
> ffff88000e06aa20
> position: root/l/l/l/r/l/r/r
> ffff88000e06b368
> position: root/l/l/l/r
> ffff88000e06ba28
> position: root/l/l/l/r/r/l
> ffff88000e06ae58
> position: root/l/l/l/r/r
> ffff88000e06a6c0
> position: root/l/l/l/r/r/r
> ...
> ffff88001f2c51b8
> position: root/l/r/r/r/l
> ffff88001f2c4d80
> position: root/l/r/r/r
> ffff880074bfd878
> position: root/l/r/r/r/r
> ffff88001f2c5a28
> position: root
> ffff88001f2c4a20
> position: root/r/l/l/l
> ffff88001f2c4360
> position: root/r/l/l
> ffff880074bfcaf8
> position: root/r/l/l/r
> ...
> ffff88001f2c5e60
> position: root/r/r/l/l/l
> ffff88001f2c4ca8
> position: root/r/r/l/l
> ffff88001f2c5008
> position: root/r/r/l
> ffff88001f2c5d88
> position: root/r/r/l/r
> ffff880074bfd6c8
> position: root/r/r/l/r/r
> ffff88001f2c4288
> position: root/r/r
> ffff88001f2c4510
> position: root/r/r/r
> ffff88001f2c5b00
> position: root/r/r/r/r
>
> This is not as readable in my opinion. And also it does not show why
> would one care about the order in the first place. See?
>
> I do not believe a hard limit of 80 columns is useful for any serious
> kernel debugging. For developing and maintaining a source code, yes.
> For dumping a lot of debugging data in a human readable form, no.
>
> For example if I type 'timer -r' I already get an output which is over
> eighty. How would you copy/paste this to help? Or how do you feel
> about the output itself?
>
> CLOCK: 1 HRTIMER_CLOCK_BASE: ffff8805ed82d9a0 [ktime_get_real]
> CURRENT
> 1522436617507394900
> SOFTEXPIRES EXPIRES HRTIMER FUNCTION
> 1522436624101007000 1522436624101057000 ffff8805e08ebd60
> ffffffff810a95c0 <hrtimer_wakeup>
> 1522436628203647900 1522436628203697900 ffff8805e33fbd60
> ffffffff810a95c0 <hrtimer_wakeup>
> 1522436635368413000 1522436635368463000 ffff8805e07cfd60
> ffffffff810a95c0 <hrtimer_wakeup>
> 1522436652248574300 1522436652248624300 ffff8805e1acfd60
> ffffffff810a95c0 <hrtimer_wakeup>
> 1522436652257417000 1522436652257467000 ffff8805e07a3d60
> ffffffff810a95c0 <hrtimer_wakeup>
> 1522436664228364000 1522436664228414000 ffff8805e1347d60
> ffffffff810a95c0 <hrtimer_wakeup>
>
> That's about the same width as my example.
> What do you suggest?
>
>> and put the "l" argument in the synopsis line at the top.
>
> Nah. I missed that one. Will fix it. Or you can just amend it yourself.
>
> --nX
>
>> Thanks,
>> Dave
>>
>>
>>
>> ----- Original Message -----
>>> ---
>>> defs.h | 1 +
>>> help.c | 80
>>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> tools.c | 16 +++++++++++--
>>> 3 files changed, 95 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/defs.h b/defs.h
>>> index adddb9f2748d..ec298cbd70be 100644
>>> --- a/defs.h
>>> +++ b/defs.h
>>> @@ -2480,6 +2480,7 @@ struct tree_data {
>>> #define TREE_STRUCT_RADIX_16 (VERBOSE << 6)
>>> #define TREE_PARSE_MEMBER (VERBOSE << 7)
>>> #define TREE_READ_MEMBER (VERBOSE << 8)
>>> +#define TREE_LINEAR_ORDER (VERBOSE << 9)
>>>
>>> #define ALIAS_RUNTIME (1)
>>> #define ALIAS_RCLOCAL (2)
>>> diff --git a/help.c b/help.c
>>> index c5cec5365962..e7df50fa2ef4 100644
>>> --- a/help.c
>>> +++ b/help.c
>>> @@ -5698,6 +5698,8 @@ char *help_tree[] = {
>>> " indicates \"root/l/r\" means that the node is the right
>>> child",
>>> " of the left child of the root node. For radix trees, the
>>> height",
>>> " and slot index values are shown with respect to the root.",
>>> +" -l Dump the tree sorted in linear order starting with the
>>> leftmost",
>>> +" node and progressing to the right.",
>>> " ",
>>> " The meaning of the \"start\" argument, which can be expressed either in",
>>> " hexadecimal format or symbolically, depends upon whether the -N option",
>>> @@ -5823,6 +5825,84 @@ char *help_tree[] = {
>>> " ffffea000407de58",
>>> " position: root/3/28",
>>> "",
>>> +" List the tree in linear order from the leftmost node progressing",
>>> +" to the right using the -l option:\n",
>>> +" %s> tree -lps vm_area_struct.vm_start,vm_end -o vm_area_struct.vm_rb -r
>>> mm_struct.mm_rb 0xffff8805dee5e400 | sed 's/^ //' | paste - - - - | column
>>> -ts' '",
>>> +" ffff8805e108f008 position: root/l/l/l/l/l/l/l/l/l vm_start =
>>> 0x7f6f9ca5f000 vm_end = 0x7f6f9d44c000",
>>> +" ffff880540d35d88 position: root/l/l/l/l/l/l/l/l vm_start =
>>> 0x7f6f9d44c000 vm_end = 0x7f6f9d454000",
>>> +" ffff8805def64d80 position: root/l/l/l/l/l/l/l vm_start =
>>> 0x7f6f9d454000 vm_end = 0x7f6f9d653000",
>>> +" ffff8805e0b46510 position: root/l/l/l/l/l/l/l/r/l vm_start =
>>> 0x7f6f9d653000 vm_end = 0x7f6f9d654000",
>>> +" ffff8805e108e288 position: root/l/l/l/l/l/l/l/r vm_start =
>>> 0x7f6f9d654000 vm_end = 0x7f6f9d655000",
>>> +" ffff8805def65bd8 position: root/l/l/l/l/l/l/l/r/r vm_start =
>>> 0x7f6f9d655000 vm_end = 0x7f6f9d661000",
>>> +" ffff8805def64ca8 position: root/l/l/l/l/l/l vm_start =
>>> 0x7f6f9d661000 vm_end = 0x7f6f9d860000",
>>> +" ffff8805def641b0 position: root/l/l/l/l/l/l/r/l vm_start =
>>> 0x7f6f9d860000 vm_end = 0x7f6f9d861000",
>>> +" ffff8805def64438 position: root/l/l/l/l/l/l/r/l/r vm_start =
>>> 0x7f6f9d861000 vm_end = 0x7f6f9d862000",
>>> +" ffff8805def65368 position: root/l/l/l/l/l/l/r vm_start =
>>> 0x7f6f9d862000 vm_end = 0x7f6f9d868000",
>>> +" ffff880540ec2e58 position: root/l/l/l/l/l/l/r/r vm_start =
>>> 0x7f6f9d868000 vm_end = 0x7f6f9d88c000",
>>> +" ...",
>>> +" ffff8805dfc08e58 position: root/l/r/r/l/r/l vm_start =
>>> 0x7f6fa020f000 vm_end = 0x7f6fa0216000",
>>> +" ffff880540ec35f0 position: root/l/r/r/l/r vm_start =
>>> 0x7f6fa0216000 vm_end = 0x7f6fa0217000",
>>> +" ffff8805dfc09cb0 position: root/l/r/r/l/r/r vm_start =
>>> 0x7f6fa0217000 vm_end = 0x7f6fa0338000",
>>> +" ffff8805dfc08360 position: root/l/r/r vm_start =
>>> 0x7f6fa0338000 vm_end = 0x7f6fa0538000",
>>> +" ffff8805dfc08bd0 position: root vm_start =
>>> 0x7f6fa07af000 vm_end = 0x7f6fa09ae000",
>>> +" ffff8805dfc08288 position: root/r/l/l/l/l/l vm_start =
>>> 0x7f6fa09ae000 vm_end = 0x7f6fa09b2000",
>>> +" ffff880540ec31b8 position: root/r/l/l/l/l/l/r vm_start =
>>> 0x7f6fa09b2000 vm_end = 0x7f6fa09b3000",
>>> +" ffff8805dfc08ca8 position: root/r/l/l/l/l vm_start =
>>> 0x7f6fa09b3000 vm_end = 0x7f6fa09b4000",
>>> +" ffff8800f78c15f0 position: root/r/l/l/l/l/r vm_start =
>>> 0x7f6fa09b4000 vm_end = 0x7f6fa0b6c000",
>>> +" ...",
>>> +" ffff8805def651b8 position: root/r/r/r/r/l/l vm_start =
>>> 0x7f6fa2f42000 vm_end = 0x7f6fa2f43000",
>>> +" ffff880540d35e60 position: root/r/r/r/r/l vm_start =
>>> 0x7f6fa2f43000 vm_end = 0x7f6fa2f44000",
>>> +" ffff880540d35518 position: root/r/r/r/r/l/r vm_start =
>>> 0x7f6fa2f44000 vm_end = 0x7f6fa2f85000",
>>> +" ffff880540d356c8 position: root/r/r/r/r vm_start =
>>> 0x7f6fa3185000 vm_end = 0x7f6fa3187000",
>>> +" ffff8805def64000 position: root/r/r/r/r/r/l/l vm_start =
>>> 0x7f6fa3187000 vm_end = 0x7f6fa3188000",
>>> +" ffff880540d35cb0 position: root/r/r/r/r/r/l vm_start =
>>> 0x7f6fa3188000 vm_end = 0x7f6fa3189000",
>>> +" ffff8805def64798 position: root/r/r/r/r/r/l/r vm_start =
>>> 0x7f6fa4bf9000 vm_end = 0x7f6fa4c1a000",
>>> +" ffff880540d340d8 position: root/r/r/r/r/r vm_start =
>>> 0x7ffc2b386000 vm_end = 0x7ffc2b3a8000",
>>> +" ffff880540d35950 position: root/r/r/r/r/r/r vm_start =
>>> 0x7ffc2b3c2000 vm_end = 0x7ffc2b3c4000",
>>> +"",
>>> +" Compared to the top/down order:\n",
>>> +" %s> tree -ps vm_area_struct.vm_start,vm_end -o vm_area_struct.vm_rb -r
>>> mm_struct.mm_rb 0xffff8805dee5e400 | sed 's/^ //' | paste - - - - | column
>>> -ts' '",
>>> +" ffff8805dfc08bd0 position: root vm_start =
>>> 0x7f6fa07af000 vm_end = 0x7f6fa09ae000",
>>> +" ffff8805e0b79b00 position: root/l vm_start =
>>> 0x7f6f9f585000 vm_end = 0x7f6f9f785000",
>>> +" ffff8805e0b79e60 position: root/l/l vm_start =
>>> 0x7f6f9ec2b000 vm_end = 0x7f6f9ee2b000",
>>> +" ffff8805e0b78bd0 position: root/l/l/l vm_start =
>>> 0x7f6f9e2c1000 vm_end = 0x7f6f9e4c0000",
>>> +" ffff8805e07f0bd0 position: root/l/l/l/l vm_start =
>>> 0x7f6f9da92000 vm_end = 0x7f6f9dc91000",
>>> +" ffff880540ec20d8 position: root/l/l/l/l/l vm_start =
>>> 0x7f6f9d88c000 vm_end = 0x7f6f9da8b000",
>>> +" ffff8805def64ca8 position: root/l/l/l/l/l/l vm_start =
>>> 0x7f6f9d661000 vm_end = 0x7f6f9d860000",
>>> +" ffff8805def64d80 position: root/l/l/l/l/l/l/l vm_start =
>>> 0x7f6f9d454000 vm_end = 0x7f6f9d653000",
>>> +" ffff880540d35d88 position: root/l/l/l/l/l/l/l/l vm_start =
>>> 0x7f6f9d44c000 vm_end = 0x7f6f9d454000",
>>> +" ffff8805e108f008 position: root/l/l/l/l/l/l/l/l/l vm_start =
>>> 0x7f6f9ca5f000 vm_end = 0x7f6f9d44c000",
>>> +" ffff8805e108e288 position: root/l/l/l/l/l/l/l/r vm_start =
>>> 0x7f6f9d654000 vm_end = 0x7f6f9d655000",
>>> +" ffff8805e0b46510 position: root/l/l/l/l/l/l/l/r/l vm_start =
>>> 0x7f6f9d653000 vm_end = 0x7f6f9d654000",
>>> +" ffff8805def65bd8 position: root/l/l/l/l/l/l/l/r/r vm_start =
>>> 0x7f6f9d655000 vm_end = 0x7f6f9d661000",
>>> +" ...",
>>> +" ffff8805dfc08360 position: root/l/r/r vm_start =
>>> 0x7f6fa0338000 vm_end = 0x7f6fa0538000",
>>> +" ffff8805dfc096c8 position: root/l/r/r/l vm_start =
>>> 0x7f6fa0010000 vm_end = 0x7f6fa020f000",
>>> +" ffff880540ec2870 position: root/l/r/r/l/l vm_start =
>>> 0x7f6f9ffe9000 vm_end = 0x7f6f9ffea000",
>>> +" ffff8805dfc09440 position: root/l/r/r/l/l/l vm_start =
>>> 0x7f6f9ffe8000 vm_end = 0x7f6f9ffe9000",
>>> +" ffff8805dfc09290 position: root/l/r/r/l/l/r vm_start =
>>> 0x7f6f9ffea000 vm_end = 0x7f6fa0010000",
>>> +" ffff880540ec35f0 position: root/l/r/r/l/r vm_start =
>>> 0x7f6fa0216000 vm_end = 0x7f6fa0217000",
>>> +" ffff8805dfc08e58 position: root/l/r/r/l/r/l vm_start =
>>> 0x7f6fa020f000 vm_end = 0x7f6fa0216000",
>>> +" ffff8805dfc09cb0 position: root/l/r/r/l/r/r vm_start =
>>> 0x7f6fa0217000 vm_end = 0x7f6fa0338000",
>>> +" ffff880540d346c0 position: root/r vm_start =
>>> 0x7f6fa1f5a000 vm_end = 0x7f6fa2159000",
>>> +" ffff8800f78c10e0 position: root/r/l vm_start =
>>> 0x7f6fa135f000 vm_end = 0x7f6fa155f000",
>>> +" ffff8800f78c1440 position: root/r/l/l vm_start =
>>> 0x7f6fa0d8d000 vm_end = 0x7f6fa0f8d000",
>>> +" ffff8800f78c1950 position: root/r/l/l/l vm_start =
>>> 0x7f6fa0b6c000 vm_end = 0x7f6fa0d6c000",
>>> +" ffff8805dfc08ca8 position: root/r/l/l/l/l vm_start =
>>> 0x7f6fa09b3000 vm_end = 0x7f6fa09b4000",
>>> +" ffff8805dfc08288 position: root/r/l/l/l/l/l vm_start =
>>> 0x7f6fa09ae000 vm_end = 0x7f6fa09b2000",
>>> +" ffff880540ec31b8 position: root/r/l/l/l/l/l/r vm_start =
>>> 0x7f6fa09b2000 vm_end = 0x7f6fa09b3000",
>>> +" ffff8800f78c15f0 position: root/r/l/l/l/l/r vm_start =
>>> 0x7f6fa09b4000 vm_end = 0x7f6fa0b6c000",
>>> +" ...",
>>> +" ffff880540d356c8 position: root/r/r/r/r vm_start =
>>> 0x7f6fa3185000 vm_end = 0x7f6fa3187000",
>>> +" ffff880540d35e60 position: root/r/r/r/r/l vm_start =
>>> 0x7f6fa2f43000 vm_end = 0x7f6fa2f44000",
>>> +" ffff8805def651b8 position: root/r/r/r/r/l/l vm_start =
>>> 0x7f6fa2f42000 vm_end = 0x7f6fa2f43000",
>>> +" ffff880540d35518 position: root/r/r/r/r/l/r vm_start =
>>> 0x7f6fa2f44000 vm_end = 0x7f6fa2f85000",
>>> +" ffff880540d340d8 position: root/r/r/r/r/r vm_start =
>>> 0x7ffc2b386000 vm_end = 0x7ffc2b3a8000",
>>> +" ffff880540d35cb0 position: root/r/r/r/r/r/l vm_start =
>>> 0x7f6fa3188000 vm_end = 0x7f6fa3189000",
>>> +" ffff8805def64000 position: root/r/r/r/r/r/l/l vm_start =
>>> 0x7f6fa3187000 vm_end = 0x7f6fa3188000",
>>> +" ffff8805def64798 position: root/r/r/r/r/r/l/r vm_start =
>>> 0x7f6fa4bf9000 vm_end = 0x7f6fa4c1a000",
>>> +" ffff880540d35950 position: root/r/r/r/r/r/r vm_start =
>>> 0x7ffc2b3c2000 vm_end = 0x7ffc2b3c4000",
>>> +"",
>>> " Alternatively, take the address of the radix_tree_node from the",
>>> " radix_tree_root structure in the address_space structure above,",
>>> " and display the tree with the -N option:\n",
>>> diff --git a/tools.c b/tools.c
>>> index 992f4776281a..1970e8bb136b 100644
>>> --- a/tools.c
>>> +++ b/tools.c
>>> @@ -3926,7 +3926,7 @@ cmd_tree()
>>> td = &tree_data;
>>> BZERO(td, sizeof(struct tree_data));
>>>
>>> - while ((c = getopt(argcnt, args, "xdt:r:o:s:S:pN")) != EOF) {
>>> + while ((c = getopt(argcnt, args, "xdt:r:o:s:S:plN")) != EOF) {
>>> switch (c)
>>> {
>>> case 't':
>>> @@ -3993,6 +3993,10 @@ cmd_tree()
>>> td->flags |= TREE_POSITION_DISPLAY;
>>> break;
>>>
>>> + case 'l':
>>> + td->flags |= TREE_LINEAR_ORDER;
>>> + break;
>>> +
>>> case 'N':
>>> td->flags |= TREE_NODE_POINTER;
>>> break;
>>> @@ -4399,6 +4403,13 @@ rbtree_iteration(ulong node_p, struct tree_data *td,
>>> char *pos)
>>>
>>> struct_p = node_p - td->node_member_offset;
>>>
>>> + if (td->flags & TREE_LINEAR_ORDER &&
>>> + readmem(node_p+OFFSET(rb_node_rb_left), KVADDR, &new_p,
>>> + sizeof(void *), "rb_node rb_left", RETURN_ON_ERROR)) {
>>> + sprintf(new_pos, "%s/l", pos);
>>> + rbtree_iteration(new_p, td, new_pos);
>>> + }
>>> +
>>> if (td->flags & VERBOSE)
>>> fprintf(fp, "%lx\n", struct_p);
>>>
>>> @@ -4430,7 +4441,8 @@ rbtree_iteration(ulong node_p, struct tree_data *td,
>>> char *pos)
>>> }
>>> }
>>>
>>> - if ( readmem(node_p+OFFSET(rb_node_rb_left), KVADDR, &new_p,
>>> + if (!(td->flags & TREE_LINEAR_ORDER) &&
>>> + readmem(node_p+OFFSET(rb_node_rb_left), KVADDR, &new_p,
>>> sizeof(void *), "rb_node rb_left", RETURN_ON_ERROR)) {
>>> sprintf(new_pos, "%s/l", pos);
>>> rbtree_iteration(new_p, td, new_pos);
>>> --
>>> 2.16.2
>>>
>>> --
>>> Crash-utility mailing list
>>> Crash-utility@xxxxxxxxxx
>>> https://www.redhat.com/mailman/listinfo/crash-utility
>>>
--
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https://www.redhat.com/mailman/listinfo/crash-utility
