Public bug reported:

rarely gre_gso.sh fails with socat getting killed by signal 15. Note
that in the log below two "exiting on signal 15" are ok. The first one
should not be there.


1002773  01:08:59 DEBUG| Running 'make run_tests -C net TEST_PROGS=gre_gso.sh 
TEST_GEN_PROGS='' TEST_CUSTOM_PROGS='''
1002774  01:08:59 DEBUG| [stdout] make: Entering directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'
1002775  01:08:59 DEBUG| [stdout] TAP version 13
1002776  01:08:59 DEBUG| [stdout] 1..1
1002777  01:08:59 DEBUG| [stdout] # timeout set to 0
1002778  01:08:59 DEBUG| [stdout] # selftests: net: gre_gso.sh
1002779  01:09:02 DEBUG| [stdout] # 2025/11/28 01:09:02 socat[689576] W exiting 
on signal 15
1002780  01:09:02 DEBUG| [stdout] # TEST: GREv6/v4 - copy file w/ TSO [FAIL]
1002781  01:09:02 DEBUG| [stdout] # TEST: GREv6/v4 - copy file w/ GSO [ OK ]
1002782  01:09:02 DEBUG| [stdout] # 2025/11/28 01:09:02 socat[689568] W exiting 
on signal 15
1002783  01:09:03 DEBUG| [stdout] # TEST: GREv6/v6 - copy file w/ TSO [ OK ]
1002784  01:09:03 DEBUG| [stdout] # TEST: GREv6/v6 - copy file w/ GSO [ OK ]
1002785  01:09:03 DEBUG| [stdout] # 2025/11/28 01:09:03 socat[689583] W exiting 
on signal 15
1002786  01:09:03 DEBUG| [stdout] #
1002787  01:09:03 DEBUG| [stdout] # Tests passed: 3
1002788  01:09:03 DEBUG| [stdout] # Tests failed: 1
1002789  01:09:03 DEBUG| [stdout] not ok 1 selftests: net: gre_gso.sh # exit=1 


This is most likely timing issue and can be mitigated by increasing timeout for 
socat from 1 to 3 seconds.

** Affects: ubuntu-kernel-tests
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Jammy)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Noble)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Plucky)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Questing)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Resolute)
     Importance: Undecided
         Status: New

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Plucky)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Questing)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Resolute)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Noble)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2136820

Title:
  ubuntu_kselftests:_net/net:gre_gso.sh failing

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