[LTP] LTP syscalls mseal02 and shmctl03 fails on compat mode 64-bit kernel on 32-bit rootfs

[Naresh Kamboju]

The LTP syscalls mseal02 and shmctl03 failed only with compat mode testing
with 64-bit kernel with 32-bit rootfs combination.

Would it be possible to detect compat mode test environment and handle the test
expectation in LTP test development ?

Test case:
 - ltp-syscalls/mseal02
 - ltp-syscalls/shmctl03

Test environments:
 - qemu-arm64-compat
 - qemu-x86_64-compat
 - x86-compat

Regression Analysis:
 - New regression? Yes
 - Reproducibility? Yes

Test regression: LTP mseal02.c:45: TFAIL: mseal(0xf7a8e000,
4294963201, 0) expected EINVAL: ENOMEM (12)

Test regression: LTP shmctl03.c:33: TFAIL: /proc/sys/kernel/shmmax !=
2147483647 got 4294967295

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Test log
tst_test.c:1953: TINFO: LTP version: 20250530
tst_test.c:1956: TINFO: Tested kernel: 6.16.0-rc4-next-20250701 #1 SMP
PREEMPT @1751364932 aarch64
tst_kconfig.c:88: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:676: TINFO: CONFIG_TRACE_IRQFLAGS kernel option detected
which might slow the execution
tst_test.c:1774: TINFO: Overall timeout per run is 0h 21m 36s
mseal02.c:45: TPASS: mseal(0xf7a8e000, 4096, 4294967295) : EINVAL (22)
mseal02.c:45: TPASS: mseal(0xf7a8e001, 4096, 0) : EINVAL (22)
mseal02.c:45: TFAIL: mseal(0xf7a8e000, 4294963201, 0) expected EINVAL:
ENOMEM (12)
mseal02.c:45: TPASS: mseal(0xf7a90000, 8192, 0) : ENOMEM (12)
mseal02.c:45: TPASS: mseal(0xf7a8f000, 8192, 0) : ENOMEM (12)
mseal02.c:45: TPASS: mseal(0xf7a8e000, 16384, 0) : ENOMEM (12)

tst_test.c:1953: TINFO: LTP version: 20250530
tst_test.c:1956: TINFO: Tested kernel: 6.16.0-rc3-next-20250627 #1 SMP
PREEMPT @1751015729 aarch64
tst_kconfig.c:88: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:676: TINFO: CONFIG_TRACE_IRQFLAGS kernel option detected
which might slow the execution
tst_test.c:1774: TINFO: Overall timeout per run is 0h 21m 36s
shmctl03.c:31: TPASS: shmmin = 1
shmctl03.c:33: TFAIL: /proc/sys/kernel/shmmax != 2147483647 got 4294967295
shmctl03.c:34: TPASS: /proc/sys/kernel/shmmni = 4096
shmctl03.c:35: TFAIL: /proc/sys/kernel/shmall != 4278190079 got 4294967295


## Source
* Kernel version: 6.16.0-rc4-next-20250701
* Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git sha: 3f804361f3b9af33e00b90ec9cb5afcc96831e60
* Git describe: 6.16.0-rc4-next-20250701
* Project details:
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250701/
* Architectures: arm64
* Toolchains: gcc-13
* Build name: gcc-13-lkftconfig-compat

## Build arm64
* Test log: https://qa-reports.linaro.org/api/testruns/28971382/log_file/
* Test details 1:
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250701/testrun/28971327/suite/ltp-syscalls/test/mseal02/log
* Test details 2:
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250627/testrun/28914507/suite/ltp-syscalls/test/shmctl03/log
* Test results compare 1:
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250701/testrun/28971324/suite/ltp-syscalls/test/mseal02/history/
* Test results compare 2:
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250627/testrun/28914507/suite/ltp-syscalls/test/shmctl03/history/
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2zGk12rggXwQHzqasQsWpTN3qyv/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2zGk12rggXwQHzqasQsWpTN3qyv/config

--
Linaro LKFT
https://lkft.linaro.org