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linux/tools/testing/selftests/proc
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Alexey Dobriyan 3adb2d8723 proc: fix test for "vsyscall=xonly" boot option 
Booting with vsyscall=xonly results in the following vsyscall VMA:

	ffffffffff600000-ffffffffff601000 --xp ... [vsyscall]


Test does read from fixed vsyscall address to determine if kernel
supports vsyscall page but it doesn't work because, well, vsyscall
page is execute only.

Fix test by trying to execute from the first byte of the page which
contains gettimeofday() stub. This should work because vsyscall
entry points have stable addresses by design.

	Alexey, avoiding parsing .config, /proc/config.gz and
	/proc/cmdline at all costs.

Link: https://lkml.kernel.org/r/Ys2KgeiEMboU8Ytu@localhost.localdomain
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: <dylanbhatch@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-17 17:31:43 -07:00
..
.gitignore procfs: do not list TID 0 in /proc/<pid>/task 2021-11-09 10:02:48 -08:00
config
fd-001-lookup.c selftests: fix warning: "_GNU_SOURCE" redefined 2018-10-24 14:49:37 -06:00
fd-002-posix-eq.c tools/testing/selftests/proc: test /proc/*/fd a bit (+ PF_KTHREAD is ABI!) 2018-06-07 17:34:38 -07:00
fd-003-kthread.c selftests: fix warning: "_GNU_SOURCE" redefined 2018-10-24 14:49:37 -06:00
Makefile procfs: do not list TID 0 in /proc/<pid>/task 2021-11-09 10:02:48 -08:00
proc-fsconfig-hidepid.c proc: use human-readable values for hidepid 2020-04-22 10:51:22 -05:00
proc-loadavg-001.c selftests: proc: fix warning: _GNU_SOURCE redefined 2020-11-05 10:08:14 -07:00
proc-multiple-procfs.c proc: allow to mount many instances of proc in one pid namespace 2020-04-22 10:51:21 -05:00
proc-pid-vm.c proc: fix test for "vsyscall=xonly" boot option 2022-07-17 17:31:43 -07:00
proc-self-map-files-001.c proc: fixup copyright sign 2018-04-12 20:52:25 -07:00
proc-self-map-files-002.c selftests: proc: Make va_max 1MB 2019-11-07 14:52:57 -07:00
proc-self-syscall.c selftests: proc: fix warning: _GNU_SOURCE redefined 2020-11-05 10:08:14 -07:00
proc-self-wchan.c proc: return exit code 4 for skipped tests 2019-03-05 21:07:21 -08:00
proc-subset-pid.c selftests: proc: test subset=pid 2021-05-06 19:24:11 -07:00
proc-tid0.c procfs: do not list TID 0 in /proc/<pid>/task 2021-11-09 10:02:48 -08:00
proc-uptime-001.c proc: fixup copyright sign 2018-04-12 20:52:25 -07:00
proc-uptime-002.c selftests: proc: fix warning: _GNU_SOURCE redefined 2020-11-05 10:08:14 -07:00
proc-uptime.h tools/testing/selftests/proc: test /proc/*/fd a bit (+ PF_KTHREAD is ABI!) 2018-06-07 17:34:38 -07:00
proc.h proc: test /proc/thread-self symlink 2018-08-22 10:52:45 -07:00
read.c proc: mandate ->proc_lseek in "struct proc_ops" 2021-05-06 19:24:11 -07:00
self.c proc: test /proc/self symlink 2018-08-22 10:52:45 -07:00
setns-dcache.c proc: fix /proc/net/* after setns(2) 2019-02-01 15:46:22 -08:00
setns-sysvipc.c proc: test /proc/sysvipc vs setns(CLONE_NEWIPC) 2019-07-16 19:23:21 -07:00
thread-self.c proc: test /proc/thread-self symlink 2018-08-22 10:52:45 -07:00