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s3nt fr0m a $martph0ne, excuse typ0s

On Tue, 28 Jan 2025, 12:30 Louis Sautier, <sautier.lo...@gmail.com> wrote:

> On 28/01/2025 06:44, Ritesh Raj Sarraf wrote:
>
> Have you reported it upstream ? That'd be the very first thing to do
>
> s3nt fr0m a $martph0ne, excuse typ0s
>
> On Tue, 28 Jan 2025, 02:21 Louis Sautier, <sautier.lo...@gmail.com> wrote:
>
>> Package: smp-utils
>> Version: 0.99-1
>>
>> Hi,
>> smp_discover 1.62 20190124 from smp-utils 0.99-1 has a bug when the
>> -p/--phy options is used; -n/--num is also broken.
>> The main problem is that the -p option is handled incorrectly, e.g.
>> smp_discover -p 5
>> not only starts at phy 5 but also skips the last 5 phys.
>>
>> For instance, on a system with 30 phys on expander-1:1:
>> # smp_discover -m /dev/bsg/expander-1:1 # This works fine and is only
>> shown to showcase the bugs
>>     phy   0:S:attached:[500605b009574bd1:07  i(SSP+STP+SMP)]  6 Gbps
>>
>>     phy   1:S:attached:[500605b009574bd1:06  i(SSP+STP+SMP)] 6 Gbps
>>     phy   2:S:attached:[500605b009574bd1:05  i(SSP+STP+SMP)] 6 Gbps
>>     phy   3:S:attached:[500605b009574bd1:04  i(SSP+STP+SMP)] 6 Gbps
>>     phy   4:U:attached:[0000000000000000:00]
>>     phy   5:U:attached:[0000000000000000:00]
>>     phy   6:U:attached:[0000000000000000:00]
>>     phy   7:U:attached:[0000000000000000:00]
>>     phy   8:D:disabled
>>     phy   9:D:disabled
>>     phy  10:D:disabled
>>     phy  11:D:disabled
>>     phy  12:U:attached:[5000cca23c0b38a5:00  t(SSP)]  6 Gbps
>>     phy  13:U:attached:[5000cca23c0e74fd:00  t(SSP)]  6 Gbps
>>     phy  14:U:attached:[5000cca098215285:00  t(SSP)]  6 Gbps
>>     phy  15:U:attached:[5000cca25552e5f9:00  t(SSP)]  6 Gbps
>>     phy  16:U:attached:[5000cca2710aab6d:00  t(SSP)]  6 Gbps
>>     phy  17:U:attached:[5000cca23c0e75b9:00  t(SSP)]  6 Gbps
>>     phy  18:U:attached:[5000cca23c0ebaad:00  t(SSP)]  6 Gbps
>>     phy  19:U:attached:[5000cca23c0f9fe5:00  t(SSP)]  6 Gbps
>>     phy  20:U:attached:[5000cca232695239:00  t(SSP)]  6 Gbps
>>     phy  21:U:attached:[5000cca23c0dd615:00  t(SSP)]  6 Gbps
>>     phy  22:U:attached:[5000cca232717d11:00  t(SSP)]  6 Gbps
>>     phy  23:U:attached:[5000cca23c10e5c9:00  t(SSP)]  6 Gbps
>>     phy  24:D:disabled
>>     phy  25:D:disabled
>>     phy  26:D:disabled
>>     phy  27:D:disabled
>>     phy  28:D:attached:[5003048017874b3d:00  V i(SSP+SMP) t(SSP)]  6 Gbps
>>     phy  29:D:attached:[0000000000000000:00]
>> # smp_discover -m /dev/bsg/expander-1:1 -p 10 # Not only are the first
>> 10 phys skipped, the last 10 are skipped too
>>     phy  10:D:disabled
>>     phy  11:D:disabled
>>     phy  12:U:attached:[5000cca23c0b38a5:00  t(SSP)]  6 Gbps
>>     phy  13:U:attached:[5000cca23c0e74fd:00  t(SSP)]  6 Gbps
>>     phy  14:U:attached:[5000cca098215285:00  t(SSP)]  6 Gbps
>>     phy  15:U:attached:[5000cca25552e5f9:00  t(SSP)]  6 Gbps
>>     phy  16:U:attached:[5000cca2710aab6d:00  t(SSP)]  6 Gbps
>>     phy  17:U:attached:[5000cca23c0e75b9:00  t(SSP)]  6 Gbps
>>     phy  18:U:attached:[5000cca23c0ebaad:00  t(SSP)]  6 Gbps
>>     phy  19:U:attached:[5000cca23c0f9fe5:00  t(SSP)]  6 Gbps
>> # smp_discover -m /dev/bsg/expander-1:1 -p 10 -n 12 # Instead of
>> displaying 12 phys starting with phy 10, it only displays phys leading
>> up to phy 12
>>     phy  10:D:disabled
>>     phy  11:D:disabled
>> # smp_discover -m /dev/bsg/expander-1:1 -p 10 -n 1 # This returns nothing
>>
>>
>> On Debian 10 (I'm not showing the result on Debian 11 where smp-utils is
>> the same version), with smp_discover 1.46 20140526 from smp-utils 0.98-2:
>> # smp_discover -m /dev/bsg/expander-1:1 -p 10
>>     phy  10:D:disabled
>>     phy  11:D:disabled
>>     phy  12:U:attached:[5000cca23c0b38a5:00  t(SSP)]  6 Gbps
>>     phy  13:U:attached:[5000cca23c0e74fd:00  t(SSP)]  6 Gbps
>>     phy  14:U:attached:[5000cca098215285:00  t(SSP)]  6 Gbps
>>     phy  15:U:attached:[5000cca25552e5f9:00  t(SSP)]  6 Gbps
>>     phy  16:U:attached:[5000cca2710aab6d:00  t(SSP)]  6 Gbps
>>     phy  17:U:attached:[5000cca23c0e75b9:00  t(SSP)]  6 Gbps
>>     phy  18:U:attached:[5000cca23c0ebaad:00  t(SSP)]  6 Gbps
>>     phy  19:U:attached:[5000cca23c0f9fe5:00  t(SSP)]  6 Gbps
>>     phy  20:U:attached:[5000cca232695239:00  t(SSP)]  6 Gbps
>>     phy  21:U:attached:[5000cca23c0dd615:00  t(SSP)]  6 Gbps
>>     phy  22:U:attached:[5000cca232717d11:00  t(SSP)]  6 Gbps
>>     phy  23:U:attached:[5000cca23c10e5c9:00  t(SSP)]  6 Gbps
>>     phy  24:D:disabled
>>     phy  25:D:disabled
>>     phy  26:D:disabled
>>     phy  27:D:disabled
>>     phy  28:D:attached:[5003048017874b3d:00  V i(SSP+SMP) t(SSP)]  6 Gbps
>>     phy  29:D:attached:[0000000000000000:00]
>> # smp_discover -m /dev/bsg/expander-1:1 -p 10 -n 12
>>     phy  10:D:disabled
>>     phy  11:D:disabled
>>     phy  12:U:attached:[5000cca23c0b38a5:00  t(SSP)]  6 Gbps
>>     phy  13:U:attached:[5000cca23c0e74fd:00  t(SSP)]  6 Gbps
>>     phy  14:U:attached:[5000cca098215285:00  t(SSP)]  6 Gbps
>>     phy  15:U:attached:[5000cca25552e5f9:00  t(SSP)]  6 Gbps
>>     phy  16:U:attached:[5000cca2710aab6d:00  t(SSP)]  6 Gbps
>>     phy  17:U:attached:[5000cca23c0e75b9:00  t(SSP)]  6 Gbps
>>     phy  18:U:attached:[5000cca23c0ebaad:00  t(SSP)]  6 Gbps
>>     phy  19:U:attached:[5000cca23c0f9fe5:00  t(SSP)]  6 Gbps
>>     phy  20:U:attached:[5000cca232695239:00  t(SSP)]  6 Gbps
>>     phy  21:U:attached:[5000cca23c0dd615:00  t(SSP)]  6 Gbps
>> # smp_discover -m /dev/bsg/expander-1:1 -p 10 -n 1
>>     phy  10:D:disabled
>>
>>
>> This bug was introduced in git commit
>> 5e9dd3dbab9f7fc85e2816ab2eb62bc92b068cc1, specifically this block,
>> starting at line 923:
>>
>> https://github.com/doug-gilbert/smp_utils/commit/5e9dd3dbab9f7fc85e2816ab2eb62bc92b068cc1#diff-853a65985ccfe20502945ddfbc340cbedde6cda3b15a3b09c64424634cd53c74R923
>> <
>> https://github.com/doug-gilbert/smp_utils/commit/5e9dd3dbab9f7fc85e2816ab2eb62bc92b068cc1#diff-853a65985ccfe20502945ddfbc340cbedde6cda3b15a3b09c64424634cd53c74R923
>> >
>> The working code was:
>> num = op->do_num ? (op->phy_id + op->do_num) : MAX_PHY_ID;
>>
>> The new broken code is:
>> num = get_num_phys(top, op, &has_t2t);
>> if (num <= 0)
>>       num = op->do_num ? (op->phy_id + op->do_num) : MAX_PHY_ID;
>> else {
>>       if (op->phy_id >= num) {
>>           printf("Given phy_id=%d at or beyond number of phys (%d)\n",
>>                  op->phy_id, num);
>>           return 0;   /* nothing to do */
>>       }
>>       num -= op->phy_id;
>>       if (op->do_num)
>>           num = (num > op->do_num) ? op->do_num : num;
>> }
>> I don't really understand what upstream was trying to do here, possibly
>> attempting to improve the error messages?
>> I emailed them as they don't really seem to have a bug tracker. This was
>> on 2025-01-17 and I haven't received a reply yet. I don't know if the
>> project is still actively maintained as upstream's doesn't seem to be
>> public, but the GitHub mirror hasn't been updated for about 2 years.
>>
>> I have opened a trivial merge request at
>> https://salsa.debian.org/linux-blocks-team/smp-utils/-/merge_requests/4
>> <https://salsa.debian.org/linux-blocks-team/smp-utils/-/merge_requests/4>
>> which is restoring the old code to make option parsing work again.
>>
> Hi,
>
> As I explained at the end of the bug report, I contacted Douglas Gilbert
> 10 days ago, using the email provided at the bottom of
> https://sg.danny.cz/sg/index.html. I haven't heard from him since. I
> could open an issue at https://github.com/doug-gilbert/smp_utils/issues
> but I doubt it would help as the author "still prefers to use a subversion
> repository on his own equipment (a Raspberry Pi) for development" according
> to https://sg.danny.cz/sg/smp_utils.html. If you have another way to
> reach him, please let me know.
>

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