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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-04-10 17:27:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-04-10 17:27:08 -0700 |
| commit | e774d5f1bc27a85f858bce7688509e866f8e8a4e (patch) | |
| tree | 8d689ac21221c3fd067a411e21e71991a5cdf49a /arch/riscv/kernel/process.c | |
| parent | c43adb3613a8b1be0396d0a38a8ab6be633d48d8 (diff) | |
| parent | 08ee1559052be302f1d3752f48360b89517d9f8d (diff) | |
Merge tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above"
* tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
prctl: cfi: change the branch landing pad prctl()s to be more descriptive
riscv: ptrace: cfi: expand "SS" references to "shadow stack" in uapi headers
prctl: rename branch landing pad implementation functions to be more explicit
riscv: ptrace: expand "LP" references to "branch landing pads" in uapi headers
riscv: cfi: clear CFI lock status in start_thread()
riscv: ptrace: cfi: fix "PRACE" typo in uapi header
Diffstat (limited to 'arch/riscv/kernel/process.c')
| -rw-r--r-- | arch/riscv/kernel/process.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 5957effab57c..b2df7f72241a 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -160,6 +160,7 @@ void start_thread(struct pt_regs *regs, unsigned long pc, * clear shadow stack state on exec. * libc will set it later via prctl. */ + set_shstk_lock(current, false); set_shstk_status(current, false); set_shstk_base(current, 0, 0); set_active_shstk(current, 0); @@ -167,6 +168,7 @@ void start_thread(struct pt_regs *regs, unsigned long pc, * disable indirect branch tracking on exec. * libc will enable it later via prctl. */ + set_indir_lp_lock(current, false); set_indir_lp_status(current, false); #ifdef CONFIG_64BIT |