mmap04 fails on riscv64 since v7.0-rc1

[andreas-schwab]

This started with kernel commit 6c7559f22b6f ("riscv/mm: ensure PROT_WRITE
leads to VM_READ | VM_WRITE"), see
https://lore.kernel.org/linux-riscv/20251112-v5_user_cfi_series-v23-6-b55691eacf4f@rivosinc.com/
for details.

tst_test.c:2042: TINFO: LTP version: 20260529.5ccf816f
tst_test.c:2045: TINFO: Tested kernel: 7.0.10-5-default #1 SMP PREEMPT_DYNAMIC Sat May 23 12:09:09 UTC 2026 (bb95589) riscv64
tst_kconfig.c:90: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:753: TINFO: CONFIG_FAULT_INJECTION kernel option detected which might slow the execution
tst_test.c:1870: TINFO: Overall timeout per run is 0h 04m 00s
mmap04.c:66: TPASS: mapping permissions in /proc matched: ---p
mmap04.c:66: TPASS: mapping permissions in /proc matched: ---s
mmap04.c:66: TPASS: mapping permissions in /proc matched: r--p
mmap04.c:66: TPASS: mapping permissions in /proc matched: r--s
mmap04.c:68: TFAIL: mapping permissions in /proc mismatched, expected: -w-p, found: rw-p
mmap04.c:68: TFAIL: mapping permissions in /proc mismatched, expected: -w-s, found: rw-s
mmap04.c:66: TPASS: mapping permissions in /proc matched: rw-p
mmap04.c:66: TPASS: mapping permissions in /proc matched: rw-s
mmap04.c:66: TPASS: mapping permissions in /proc matched: r-xp
mmap04.c:66: TPASS: mapping permissions in /proc matched: r-xs
mmap04.c:68: TFAIL: mapping permissions in /proc mismatched, expected: -wxp, found: rwxp
mmap04.c:68: TFAIL: mapping permissions in /proc mismatched, expected: -wxs, found: rwxs
mmap04.c:66: TPASS: mapping permissions in /proc matched: rwxp
mmap04.c:66: TPASS: mapping permissions in /proc matched: rwxs

Summary:
passed 10
failed 4
broken 0
skipped 0
warnings 0