diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/signal_32.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/kernel/signal_64.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/setup.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 8 |
5 files changed, 35 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 41e9ab40cd5..f70bd090dac 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -822,6 +822,7 @@ static void __init prom_send_capabilities(void) /* try calling the ibm,client-architecture-support method */ if (call_prom_ret("call-method", 3, 2, &ret, ADDR("ibm,client-architecture-support"), + root, ADDR(ibm_architecture_vec)) == 0) { /* the call exists... */ if (ret) @@ -1622,6 +1623,15 @@ static int __init prom_find_machine_type(void) if (strstr(p, RELOC("Power Macintosh")) || strstr(p, RELOC("MacRISC"))) return PLATFORM_POWERMAC; +#ifdef CONFIG_PPC64 + /* We must make sure we don't detect the IBM Cell + * blades as pSeries due to some firmware issues, + * so we do it here. + */ + if (strstr(p, RELOC("IBM,CBEA")) || + strstr(p, RELOC("IBM,CPBW-1.0"))) + return PLATFORM_GENERIC; +#endif /* CONFIG_PPC64 */ i += sl + 1; } } diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 01e3c08cb55..8fdeca2d459 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -803,10 +803,13 @@ static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int if (__get_user(cmcp, &ucp->uc_regs)) return -EFAULT; mcp = (struct mcontext __user *)(u64)cmcp; + /* no need to check access_ok(mcp), since mcp < 4GB */ } #else if (__get_user(mcp, &ucp->uc_regs)) return -EFAULT; + if (!access_ok(VERIFY_READ, mcp, sizeof(*mcp))) + return -EFAULT; #endif restore_sigmask(&set); if (restore_user_regs(regs, mcp, sig)) @@ -908,13 +911,14 @@ int sys_debug_setcontext(struct ucontext __user *ctx, { struct sig_dbg_op op; int i; + unsigned char tmp; unsigned long new_msr = regs->msr; #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE) unsigned long new_dbcr0 = current->thread.dbcr0; #endif for (i=0; i<ndbg; i++) { - if (__copy_from_user(&op, dbg, sizeof(op))) + if (copy_from_user(&op, dbg + i, sizeof(op))) return -EFAULT; switch (op.dbg_type) { case SIG_DBG_SINGLE_STEPPING: @@ -959,6 +963,11 @@ int sys_debug_setcontext(struct ucontext __user *ctx, current->thread.dbcr0 = new_dbcr0; #endif + if (!access_ok(VERIFY_READ, ctx, sizeof(*ctx)) + || __get_user(tmp, (u8 __user *) ctx) + || __get_user(tmp, (u8 __user *) (ctx + 1) - 1)) + return -EFAULT; + /* * If we get a fault copying the context into the kernel's * image of the user's registers, we can't just return -EFAULT diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 27f65b95184..c2db642f4cd 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -182,6 +182,8 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, err |= __get_user(msr, &sc->gp_regs[PT_MSR]); if (err) return err; + if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128))) + return -EFAULT; /* Copy 33 vec registers (vr0..31 and vscr) from the stack */ if (v_regs != 0 && (msr & MSR_VEC) != 0) err |= __copy_from_user(current->thread.vr, v_regs, diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c index 6574b22b3cf..fd3e5609e3e 100644 --- a/arch/powerpc/platforms/cell/setup.c +++ b/arch/powerpc/platforms/cell/setup.c @@ -125,14 +125,13 @@ static void __init cell_init_early(void) static int __init cell_probe(void) { - /* XXX This is temporary, the Cell maintainer will come up with - * more appropriate detection logic - */ unsigned long root = of_get_flat_dt_root(); - if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) - return 0; - return 1; + if (of_flat_dt_is_compatible(root, "IBM,CBEA") || + of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) + return 1; + + return 0; } /* diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 5f79f01c44f..3ba87835757 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -389,6 +389,7 @@ static int __init pSeries_probe_hypertas(unsigned long node, static int __init pSeries_probe(void) { + unsigned long root = of_get_flat_dt_root(); char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(), "device_type", NULL); if (dtype == NULL) @@ -396,6 +397,13 @@ static int __init pSeries_probe(void) if (strcmp(dtype, "chrp")) return 0; + /* Cell blades firmware claims to be chrp while it's not. Until this + * is fixed, we need to avoid those here. + */ + if (of_flat_dt_is_compatible(root, "IBM,CPBW-1.0") || + of_flat_dt_is_compatible(root, "IBM,CBEA")) + return 0; + DBG("pSeries detected, looking for LPAR capability...\n"); /* Now try to figure out if we are running on LPAR */ |