torvalds/linux
torvalds/linux
2
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-04 20:19:47 +08:00
Code

kselftest/arm64: Don't open code SVE_PT_SIZE() in fp-ptrace

Browse Source 
In fp-trace when allocating a buffer to write SVE register data we open
code the addition of the header size to the VL depeendent register data
size, which lead to an underallocation bug when we cut'n'pasted the code
for FPSIMD format writes. Use the SVE_PT_SIZE() macro that the kernel
UAPI provides for this.

Fixes: b84d2b2795 ("kselftest/arm64: Test FPSIMD format data writes via NT_ARM_SVE in fp-ptrace")
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250812-arm64-fp-trace-macro-v1-1-317cfff986a5@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2025-08-12 15:49:27 +01:00 committed by Catalin Marinas
parent ceca927c86
commit d82aa5d350
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/testing/selftests/arm64/fp/fp-ptrace.c
View File

@ -1187,7 +1187,7 @@ static void sve_write_sve(pid_t child, struct test_config *config)
if (!vl) if (!vl)
return; return;
iov.iov_len = SVE_PT_SVE_OFFSET + SVE_PT_SVE_SIZE(vq, SVE_PT_REGS_SVE); iov.iov_len = SVE_PT_SIZE(vq, SVE_PT_REGS_SVE);
iov.iov_base = malloc(iov.iov_len); iov.iov_base = malloc(iov.iov_len);
if (!iov.iov_base) { if (!iov.iov_base) {
ksft_print_msg("Failed allocating %lu byte SVE write buffer\n", ksft_print_msg("Failed allocating %lu byte SVE write buffer\n",
@ -1234,8 +1234,7 @@ static void sve_write_fpsimd(pid_t child, struct test_config *config)
if (!vl) if (!vl)
return; return;
iov.iov_len = SVE_PT_SVE_OFFSET + SVE_PT_SVE_SIZE(vq, iov.iov_len = SVE_PT_SIZE(vq, SVE_PT_REGS_FPSIMD);
SVE_PT_REGS_FPSIMD);
iov.iov_base = malloc(iov.iov_len); iov.iov_base = malloc(iov.iov_len);
if (!iov.iov_base) { if (!iov.iov_base) {
ksft_print_msg("Failed allocating %lu byte SVE write buffer\n", ksft_print_msg("Failed allocating %lu byte SVE write buffer\n",