On 06. 01. 2023. 11:39, Alexey Dobriyan wrote:
On Wed, Jan 04, 2023 at 07:27:40PM +0100, Mirsad Goran Todorovac wrote:
Dear all,
Trying to complete `make kselftest` for the first time, so maybe I'm doing something wrong?
Or we are having a regression in 6.2-rc2 release candidate ...
However, the output of selftest run is:
make[2]: Entering directory '.../linux_torvalds/tools/testing/selftests/proc'
TAP version 13
1..21
# selftests: proc: fd-001-lookup
ok 1 selftests: proc: fd-001-lookup
# selftests: proc: fd-002-posix-eq
ok 2 selftests: proc: fd-002-posix-eq
# selftests: proc: fd-003-kthread
ok 3 selftests: proc: fd-003-kthread
# selftests: proc: proc-loadavg-001
ok 4 selftests: proc: proc-loadavg-001
# selftests: proc: proc-empty-vm
# proc-empty-vm: proc-empty-vm.c:184: test_proc_pid_maps: Assertion `rv == 0' failed.
# /usr/bin/timeout: the monitored command dumped core
# Aborted
not ok 5 selftests: proc: proc-empty-vm # exit=134
# selftests: proc: proc-pid-vm
# proc-pid-vm: proc-pid-vm.c:365: main: Assertion `rv == len' failed.
# /usr/bin/timeout: the monitored command dumped core
# Aborted
Please find attached lshw output, dmesg, config and lsmod.
I am available for further diagnostics.
The platform is Ubuntu 22.10 kinetic kudu on a Lenovo Ideapad 3 15ITL6 laptop.
The "bug" is that "call rel32" instruction testing for executable
vsyscall page which should be relocated to "call 0xffffffffff600000"
is messed up. Ubuntu 22.10 ships with "vsyscall=xonly" so there should not be
any faults when executing from it. But segfault happens with normal
randomised userspace address.
I'll change it to "call *rax" which should be more robust (and works)
and free from relocations.
If you will need to test the patch in the same environment where the problem initially
occurred, I am ready at your disposal.
Thanks,
Mirsad
--
Mirsad Goran Todorovac
Sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
--
System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia
The European Union
