--- Begin Message ---
Package: nvme-stas
Severity: normal
Tags: patch
User: [email protected]
Usertags: origin-ubuntu noble ubuntu-patch
Dear Maintainer,
After applying fixes from bug 1054533 [1], autopkgtest
for nvme-stas hangs on s390x and ends up failing on timeout.
Excerpt from an autopkgtest run on Ubuntu [2].
> 96s test__data_matches_ip (test-iputil.Test.test__data_matches_ip) ... ok
> 596s test_get_interface (test-iputil.Test.test_get_interface)
> 10600s Check that get_interface() returns the right info ... autopkgtest
> [02:09:30]: ERROR: timed out on command "su -s /bin/bash ubuntu -c set -e;
> [...]
This is caused by an endianness issue in staslib.iputil when
packing/unpacking netlink data structures. It can be fixed by using host
byte ordering instead of "hard-coding" little endian.
I forwarded the fix upstream [3].
In Ubuntu, the attached patch was applied to achieve the following:
* Fix endianness issues in staslib.iputil causing hangs on s390x.
(LP: #2045000)
Thanks for considering the patch.
[1] https://bugs.debian.org/1054533
[2]
https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/s390x/n/nvme-stas/20231128_021002_94626@/log.gz
[3] https://github.com/linux-nvme/nvme-stas/pull/406
-- System Information:
Debian Release: trixie/sid
APT prefers mantic-updates
APT policy: (500, 'mantic-updates'), (500, 'mantic-security'), (500, 'mantic')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.1.0-16-generic (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
diff -Nru nvme-stas-2.3/debian/control nvme-stas-2.3/debian/control
--- nvme-stas-2.3/debian/control 2023-11-27 17:45:04.000000000 +0100
+++ nvme-stas-2.3/debian/control 2023-11-28 11:01:46.000000000 +0100
@@ -1,8 +1,7 @@
Source: nvme-stas
Section: net
Priority: optional
-Maintainer: Ubuntu Developers <[email protected]>
-XSBC-Original-Maintainer: Daniel Baumann <[email protected]>
+Maintainer: Daniel Baumann <[email protected]>
Uploaders:
Benjamin Drung <[email protected]>,
Build-Depends:
diff -Nru nvme-stas-2.3/debian/patches/fix-iputil-endianness-issue.patch
nvme-stas-2.3/debian/patches/fix-iputil-endianness-issue.patch
--- nvme-stas-2.3/debian/patches/fix-iputil-endianness-issue.patch
1970-01-01 01:00:00.000000000 +0100
+++ nvme-stas-2.3/debian/patches/fix-iputil-endianness-issue.patch
2023-11-28 11:01:46.000000000 +0100
@@ -0,0 +1,103 @@
+Description: iputil: pack and unpack using native byte ordering
+ On big-endian architectures (such as s390x), tests defined in
+ test-iputil.py would hang:
+ .
+ > 596s test_get_interface (test-iputil.Test.test_get_interface)
+ > 10600s Check that get_interface() returns the right info ...
+ .
+ Indeed, running the following hangs as well:
+ .
+ > from staslib import iputil
+ >
+ > iputil.net_if_addrs()
+ .
+ This is an endianness issue that can be fixed by using native
+ byte-ordering when packing and unpacking netlink data structures such as
+ ifaddrmsg.
+Author: Olivier Gayot <[email protected]>
+Bug-Ubuntu: https://launchpad.net/bugs/2045000
+Forwarded: https://github.com/linux-nvme/nvme-stas/pull/406
+Last-Update: 2023-11-28
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- a/staslib/iputil.py
++++ b/staslib/iputil.py
+@@ -42,7 +42,7 @@
+ __u32 nlmsg_pid; /* Sending process port ID */
+ };
+ '''
+- return struct.pack('<LHHLL', NLMSG_LENGTH(msg_len), nlmsg_type,
nlmsg_flags, nlmsg_seq, nlmsg_pid)
++ return struct.pack('=LHHLL', NLMSG_LENGTH(msg_len), nlmsg_type,
nlmsg_flags, nlmsg_seq, nlmsg_pid)
+
+
+ def _ifaddrmsg(family=0, prefixlen=0, flags=0, scope=0, index=0):
+@@ -55,7 +55,7 @@
+ __u32 ifa_index; /* Link index */
+ };
+ '''
+- return struct.pack('<BBBBL', family, prefixlen, flags, scope, index)
++ return struct.pack('=BBBBL', family, prefixlen, flags, scope, index)
+
+
+ def _ifinfomsg(family=0, dev_type=0, index=0, flags=0, change=0):
+@@ -69,7 +69,7 @@
+ unsigned int ifi_change; /* change mask: IFF_* */
+ };
+ '''
+- return struct.pack('<BBHiII', family, 0, dev_type, index, flags, change)
++ return struct.pack('=BBHiII', family, 0, dev_type, index, flags, change)
+
+
+ def _nlmsg(nlmsg_type, nlmsg_flags, msg: bytes):
+@@ -102,7 +102,7 @@
+ nlmsg += sock.recv(8192)
+
+ nlmsghdr = nlmsg[nlmsg_idx : nlmsg_idx + NLMSG_HDRLEN]
+- nlmsg_len, nlmsg_type, _, _, _ = struct.unpack('<LHHLL', nlmsghdr)
++ nlmsg_len, nlmsg_type, _, _, _ = struct.unpack('=LHHLL', nlmsghdr)
+
+ if nlmsg_type == NLMSG_DONE:
+ break
+@@ -110,13 +110,13 @@
+ if nlmsg_type == RTM_BASE:
+ msg_indx = nlmsg_idx + NLMSG_HDRLEN
+ msg = nlmsg[msg_indx : msg_indx + IFINFOMSG_SZ] # ifinfomsg
+- _, _, ifi_type, ifi_index, _, _ = struct.unpack('<BBHiII',
msg)
++ _, _, ifi_type, ifi_index, _, _ = struct.unpack('=BBHiII',
msg)
+
+ if ifi_type in (ARPHRD_LOOPBACK, ARPHRD_ETHER):
+ rtattr_indx = msg_indx + IFINFOMSG_SZ
+ while rtattr_indx < (nlmsg_idx + nlmsg_len):
+ rtattr = nlmsg[rtattr_indx : rtattr_indx + RTATTR_SZ]
+- rta_len, rta_type = struct.unpack('<HH', rtattr)
++ rta_len, rta_type = struct.unpack('=HH', rtattr)
+ if rta_type == IFLA_ADDRESS:
+ data = nlmsg[rtattr_indx + RTATTR_SZ :
rtattr_indx + rta_len]
+ if _data_matches_mac(data, mac):
+@@ -206,7 +206,7 @@
+ nlmsg += sock.recv(8192)
+
+ nlmsghdr = nlmsg[nlmsg_idx : nlmsg_idx + NLMSG_HDRLEN]
+- nlmsg_len, nlmsg_type, _, _, _ = struct.unpack('<LHHLL', nlmsghdr)
++ nlmsg_len, nlmsg_type, _, _, _ = struct.unpack('=LHHLL', nlmsghdr)
+
+ if nlmsg_type == NLMSG_DONE:
+ break
+@@ -214,7 +214,7 @@
+ if nlmsg_type == RTM_NEWADDR:
+ msg_indx = nlmsg_idx + NLMSG_HDRLEN
+ msg = nlmsg[msg_indx : msg_indx + IFADDRMSG_SZ] # ifaddrmsg
+- ifa_family, _, _, _, ifa_index = struct.unpack('<BBBBL', msg)
++ ifa_family, _, _, _, ifa_index = struct.unpack('=BBBBL', msg)
+
+ if ifa_family in (socket.AF_INET, socket.AF_INET6):
+ interfaces.setdefault(ifa_index, {4: [], 6: []})
+@@ -222,7 +222,7 @@
+ rtattr_indx = msg_indx + IFADDRMSG_SZ
+ while rtattr_indx < (nlmsg_idx + nlmsg_len):
+ rtattr = nlmsg[rtattr_indx : rtattr_indx + RTATTR_SZ]
+- rta_len, rta_type = struct.unpack('<HH', rtattr)
++ rta_len, rta_type = struct.unpack('=HH', rtattr)
+
+ if rta_type == IFLA_IFNAME:
+ data = nlmsg[rtattr_indx + RTATTR_SZ :
rtattr_indx + rta_len]
diff -Nru nvme-stas-2.3/debian/patches/series
nvme-stas-2.3/debian/patches/series
--- nvme-stas-2.3/debian/patches/series 2023-11-27 17:45:04.000000000 +0100
+++ nvme-stas-2.3/debian/patches/series 2023-11-28 11:01:46.000000000 +0100
@@ -1,2 +1,3 @@
fix-test-libnvme-version.patch
fix-test-udev-failing-multiple-IPv6.patch
+fix-iputil-endianness-issue.patch
--- End Message ---
