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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-06-09 12:17:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-06-09 12:17:43 -0700 |
| commit | 95fc76c81b9270a9ab38f4947fe5cb786c8c79cc (patch) | |
| tree | 86e6bd940dcd585823cf79428c8f4eb4eeddff80 /arch/powerpc/include | |
| parent | Merge tag 'net-5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff) | |
| parent | powerpc/32: Fix overread/overwrite of thread_struct via ptrace (diff) | |
| download | linux-dev-95fc76c81b9270a9ab38f4947fe5cb786c8c79cc.tar.xz linux-dev-95fc76c81b9270a9ab38f4947fe5cb786c8c79cc.zip | |
Merge tag 'powerpc-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- On 32-bit fix overread/overwrite of thread_struct via ptrace
PEEK/POKE.
- Fix softirqs not switching to the softirq stack since we moved
irq_exit().
- Force thread size increase when KASAN is enabled to avoid stack
overflows.
- On Book3s 64 mark more code as not to be instrumented by KASAN to
avoid crashes.
- Exempt __get_wchan() from KASAN checking, as it's inherently racy.
- Fix a recently introduced crash in the papr_scm driver in some
configurations.
- Remove include of <generated/compile.h> which is forbidden.
Thanks to Ariel Miculas, Chen Jingwen, Christophe Leroy, Erhard Furtner,
He Ying, Kees Cook, Masahiro Yamada, Nageswara R Sastry, Paul Mackerras,
Sachin Sant, Vaibhav Jain, and Wanming Hu.
* tag 'powerpc-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/32: Fix overread/overwrite of thread_struct via ptrace
powerpc/book3e: get rid of #include <generated/compile.h>
powerpc/kasan: Force thread size increase with KASAN
powerpc/papr_scm: don't requests stats with '0' sized stats buffer
powerpc: Don't select HAVE_IRQ_EXIT_ON_IRQ_STACK
powerpc/kasan: Silence KASAN warnings in __get_wchan()
powerpc/kasan: Mark more real-mode code as not to be instrumented
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/thread_info.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index 125328d1b980..af58f1ed3952 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -14,10 +14,16 @@ #ifdef __KERNEL__ -#if defined(CONFIG_VMAP_STACK) && CONFIG_THREAD_SHIFT < PAGE_SHIFT +#ifdef CONFIG_KASAN +#define MIN_THREAD_SHIFT (CONFIG_THREAD_SHIFT + 1) +#else +#define MIN_THREAD_SHIFT CONFIG_THREAD_SHIFT +#endif + +#if defined(CONFIG_VMAP_STACK) && MIN_THREAD_SHIFT < PAGE_SHIFT #define THREAD_SHIFT PAGE_SHIFT #else -#define THREAD_SHIFT CONFIG_THREAD_SHIFT +#define THREAD_SHIFT MIN_THREAD_SHIFT #endif #define THREAD_SIZE (1 << THREAD_SHIFT) |