======================================================================
FAIL: test_072_strict_devmem (__main__.KernelSecurityTest)
/dev/mem unreadable for kernel memory
----------------------------------------------------------------------
Traceback (most recent call last):
File "./test-kernel-security.py", line 624, in test_072_strict_devmem
self.assertShellExitEquals(0, ["make"])
File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1158, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: Got exit code 2, expected 0
Command: 'make'
Output:
cc -Wall -Werror -O2 readmem.c -o readmem -lcap
make -C signpost
make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost'
make -C /usr/src/linux-headers-5.6.0-1010-oem M=$PWD modules
make[2]: Entering directory '/usr/src/linux-headers-5.6.0-1010-oem'
CC [M] /home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.o
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c: In function ‘signpost_init’:
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:101:50: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
101 | PROC_CREATE(entry, "signpost_virt", S_IRUGO, &signpost_virt_proc_fops);
| ^~~~~~~~~~~~~~~~~~~~~~~~
| |
| const struct file_operations *
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:78:43: note: in definition of macro ‘PROC_CREATE’
78 | entry = proc_create(name, mode, NULL, func)
| ^~~~
In file included from /home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:15:
./include/linux/proc_fs.h:64:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
64 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
| ^~~~~~~~~~~
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:107:50: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
107 | PROC_CREATE(entry, "signpost_phys", S_IRUGO, &signpost_phys_proc_fops);
| ^~~~~~~~~~~~~~~~~~~~~~~~
| |
| const struct file_operations *
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:78:43: note: in definition of macro ‘PROC_CREATE’
78 | entry = proc_create(name, mode, NULL, func)
| ^~~~
In file included from /home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:15:
./include/linux/proc_fs.h:64:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
64 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
| ^~~~~~~~~~~
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:113:51: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
113 | PROC_CREATE(entry, "signpost_value", S_IRUGO, &signpost_value_proc_fops);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
| |
| const struct file_operations *
/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:78:43: note: in definition of macro ‘PROC_CREATE’
78 | entry = proc_create(name, mode, NULL, func)
| ^~~~
In file included from /home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.c:15:
./include/linux/proc_fs.h:64:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
64 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
| ^~~~~~~~~~~
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:276: /home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost/signpost.o] Error 1
make[2]: *** [Makefile:1695: /home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost] Error 2
make[2]: Leaving directory '/usr/src/linux-headers-5.6.0-1010-oem'
make[1]: *** [Makefile:4: all] Error 2
make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/mem/signpost'
make: *** [Makefile:6: all] Error 2
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.6.0-1010-oem 5.6.0-1010.10
ProcVersionSignature: User Name 5.6.0-1010.10-oem 5.6.8
Uname: Linux 5.6.0-1010-oem x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
Date: Mon May 18 14:47:03 2020
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-oem-5.6
UpgradeStatus: No upgrade log present (probably fresh install)
This issue ultimately has the same root cause as LP: #1880659, namely that in the 5.6 development cycle, the proc_fs infrastructure was modified to not use the generic file_operations struct and instead use a simplified procfs_ops struct (see d56c0d45f0e27 'proc: decouple proc from VFS with "struct proc_ops"'), which is why this test is failing.
This has been fixed in the qa-regression-
Thanks.