Bug 1107
Summary: | [22.11-rc1][meson test] seqlock_autotest test failed | ||
---|---|---|---|
Product: | DPDK | Reporter: | jiang,yu (yux.jiang) |
Component: | meson | Assignee: | Mattias Rönnblom (mattias.ronnblom) |
Status: | UNCONFIRMED --- | ||
Severity: | normal | CC: | david.marchand |
Priority: | Normal | ||
Version: | 22.11 | ||
Target Milestone: | --- | ||
Hardware: | All | ||
OS: | All | ||
Attachments: |
O2_working.log
O3_ko.log |
Description
jiang,yu
2022-10-18 07:57:07 CEST
Mattias, could you have a look? Thanks. Only found this failure on CentOS7.9. Can test passed on 22.04.1 LTS (Jammy Jellyfish)/5.15.0-27-generic with GCC gcc version 11.2.0. Still can reproduce on dpdk22.11-rc2
[root@localhost dpdk]# meson test -C x86_64-native-linuxapp-gcc/ seqlock_autotest
ninja: Entering directory `/root/dpdk/x86_64-native-linuxapp-gcc'
ninja: no work to do.
1/1 DPDK:fast-tests / seqlock_autotest FAIL 3.08s (exit status 255 or signal 127 SIGinvalid)
>>> MALLOC_PERTURB_=123 DPDK_TEST=seqlock_autotest
>>> /root/dpdk/x86_64-native-linuxapp-gcc/app/test/dpdk-test
>>> --file-prefix=seqlock_autotest
1/1 DPDK:fast-tests / seqlock_autotest FAIL 3.08s (exit status 255 or signal 127 SIGinvalid)
06:38:57 MALLOC_PERTURB_=123 DPDK_TEST=seqlock_autotest /root/dpdk/x86_64-native-linuxapp-gcc/app/test/dpdk-test --file-prefix=seqlock_autotest
----------------------------------- output -----------------------------------
stdout:
RTE>>seqlock_autotest^M
Reader observed inconsistent data values 13079009876559343592 10884127578201130137 10884127578201130137
Test Failed
RTE>>
stderr:
EAL: Detected CPU lcores: 8
EAL: Detected NUMA nodes: 1
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/seqlock_autotest/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: 1024 hugepages of size 2097152 reserved, but no mounted hugetlbfs found for that size
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_i40e (8086:158b) device: 0000:02:00.0 (socket -1)
EAL: Probe PCI driver: net_i40e (8086:158b) device: 0000:02:00.1 (socket -1)
APP: HPET is not enabled, using TSC as default timer
------------------------------------------------------------------------------
Summary of Failures:
Created attachment 228 [details]
O2_working.log
Created attachment 229 [details]
O3_ko.log
I can confirm the issue is linked to compiler. Either using the compiler barrier workaround (suggested on mailing list), or changing compilation optimisation level from 3 to 2 makes the issue disappear. Fwiw, I attached the disassembled code. (In reply to David Marchand from comment #6) > I can confirm the issue is linked to compiler. > Either using the compiler barrier workaround (suggested on mailing list), or > changing compilation optimisation level from 3 to 2 makes the issue > disappear. > Fwiw, I attached the disassembled code. Yes, it is only found on CentOS7.9/gcc 4.8.5. Can test passed on 22.04.1 LTS (Jammy Jellyfish)/5.15.0-27-generic with GCC gcc version 11.2.0. |