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author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-02 11:33:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-02 11:33:15 -0700 |
commit | ab2e7f4b46bf8fccf088ec496b3bb26b43e91340 (patch) | |
tree | 0a3010aa08436bdee650fbf4d0371b8d17555ff3 /scripts | |
parent | d7e0a795bf37a13554c80cfc5ba97abedf53f391 (diff) | |
parent | 11779842dd6f59505f5685bdd6ebaaa7a5bc1d94 (diff) |
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- Rejig task/thread info to place thread info in task struct
- Amba bus cleanups (removing unused functions)
- Handle Amba device probe without IRQ domains
- Parse linux,usable-memory-range in decompressor
- Mark OCRAM as read-only after initialisation
- Refactor page fault handling
- Fix PXN handling with LPAE kernels
- Warning and build fixes from Arnd
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (32 commits)
ARM: 9151/1: Thumb2: avoid __builtin_thread_pointer() on Clang
ARM: 9150/1: Fix PID_IN_CONTEXTIDR regression when THREAD_INFO_IN_TASK=y
ARM: 9147/1: add printf format attribute to early_print()
ARM: 9146/1: RiscPC needs older gcc version
ARM: 9145/1: patch: fix BE32 compilation
ARM: 9144/1: forbid ftrace with clang and thumb2_kernel
ARM: 9143/1: add CONFIG_PHYS_OFFSET default values
ARM: 9142/1: kasan: work around LPAE build warning
ARM: 9140/1: allow compile-testing without machine record
ARM: 9137/1: disallow CONFIG_THUMB with ARMv4
ARM: 9136/1: ARMv7-M uses BE-8, not BE-32
ARM: 9135/1: kprobes: address gcc -Wempty-body warning
ARM: 9101/1: sa1100/assabet: convert LEDs to gpiod APIs
ARM: 9131/1: mm: Fix PXN process with LPAE feature
ARM: 9130/1: mm: Provide die_kernel_fault() helper
ARM: 9126/1: mm: Kill page table base print in show_pte()
ARM: 9127/1: mm: Cleanup access_error()
ARM: 9129/1: mm: Kill task_struct argument for __do_page_fault()
ARM: 9128/1: mm: Refactor the __do_page_fault()
ARM: imx6: mark OCRAM mapping read-only
...
Diffstat (limited to 'scripts')
-rw-r--r-- | scripts/gcc-plugins/arm_ssp_per_task_plugin.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/scripts/gcc-plugins/arm_ssp_per_task_plugin.c b/scripts/gcc-plugins/arm_ssp_per_task_plugin.c index 8c1af9bdcb1b..7328d037f975 100644 --- a/scripts/gcc-plugins/arm_ssp_per_task_plugin.c +++ b/scripts/gcc-plugins/arm_ssp_per_task_plugin.c @@ -4,7 +4,7 @@ __visible int plugin_is_GPL_compatible; -static unsigned int sp_mask, canary_offset; +static unsigned int canary_offset; static unsigned int arm_pertask_ssp_rtl_execute(void) { @@ -13,7 +13,7 @@ static unsigned int arm_pertask_ssp_rtl_execute(void) for (insn = get_insns(); insn; insn = NEXT_INSN(insn)) { const char *sym; rtx body; - rtx mask, masked_sp; + rtx current; /* * Find a SET insn involving a SYMBOL_REF to __stack_chk_guard @@ -30,19 +30,13 @@ static unsigned int arm_pertask_ssp_rtl_execute(void) /* * Replace the source of the SET insn with an expression that - * produces the address of the copy of the stack canary value - * stored in struct thread_info + * produces the address of the current task's stack canary value */ - mask = GEN_INT(sext_hwi(sp_mask, GET_MODE_PRECISION(Pmode))); - masked_sp = gen_reg_rtx(Pmode); + current = gen_reg_rtx(Pmode); - emit_insn_before(gen_rtx_set(masked_sp, - gen_rtx_AND(Pmode, - stack_pointer_rtx, - mask)), - insn); + emit_insn_before(gen_load_tp_hard(current), insn); - SET_SRC(body) = gen_rtx_PLUS(Pmode, masked_sp, + SET_SRC(body) = gen_rtx_PLUS(Pmode, current, GEN_INT(canary_offset)); } return 0; @@ -72,7 +66,6 @@ __visible int plugin_init(struct plugin_name_args *plugin_info, const char * const plugin_name = plugin_info->base_name; const int argc = plugin_info->argc; const struct plugin_argument *argv = plugin_info->argv; - int tso = 0; int i; if (!plugin_default_version_check(version, &gcc_version)) { @@ -91,11 +84,6 @@ __visible int plugin_init(struct plugin_name_args *plugin_info, return 1; } - if (!strcmp(argv[i].key, "tso")) { - tso = atoi(argv[i].value); - continue; - } - if (!strcmp(argv[i].key, "offset")) { canary_offset = atoi(argv[i].value); continue; @@ -105,9 +93,6 @@ __visible int plugin_init(struct plugin_name_args *plugin_info, return 1; } - /* create the mask that produces the base of the stack */ - sp_mask = ~((1U << (12 + tso)) - 1); - PASS_INFO(arm_pertask_ssp_rtl, "expand", 1, PASS_POS_INSERT_AFTER); register_callback(plugin_info->base_name, PLUGIN_PASS_MANAGER_SETUP, |