diff options
Diffstat (limited to 'arch')
50 files changed, 256 insertions, 249 deletions
diff --git a/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi b/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi index a83b9d4f172e..add54f4e7be9 100644 --- a/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi +++ b/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi @@ -58,7 +58,7 @@ gic: interrupt-controller@f1001000 { compatible = "arm,gic-400"; reg = <0x0 0xf1001000 0x0 0x1000>, /* GICD */ - <0x0 0xf1002000 0x0 0x100>; /* GICC */ + <0x0 0xf1002000 0x0 0x2000>; /* GICC */ #address-cells = <0>; #interrupt-cells = <3>; interrupt-controller; diff --git a/arch/arm64/boot/dts/nvidia/tegra132-norrin.dts b/arch/arm64/boot/dts/nvidia/tegra132-norrin.dts index 6e5f8465669e..a5ff8cfedf34 100644 --- a/arch/arm64/boot/dts/nvidia/tegra132-norrin.dts +++ b/arch/arm64/boot/dts/nvidia/tegra132-norrin.dts @@ -9,8 +9,8 @@ compatible = "nvidia,norrin", "nvidia,tegra132", "nvidia,tegra124"; aliases { - rtc0 = "/i2c@7000d000/as3722@40"; - rtc1 = "/rtc@7000e000"; + rtc0 = &as3722; + rtc1 = &tegra_rtc; serial0 = &uarta; }; diff --git a/arch/arm64/boot/dts/nvidia/tegra132.dtsi b/arch/arm64/boot/dts/nvidia/tegra132.dtsi index b0bcda8cc51f..5bfd497f6367 100644 --- a/arch/arm64/boot/dts/nvidia/tegra132.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra132.dtsi @@ -573,7 +573,7 @@ status = "disabled"; }; - rtc@7000e000 { + tegra_rtc: rtc@7000e000 { compatible = "nvidia,tegra124-rtc", "nvidia,tegra20-rtc"; reg = <0x0 0x7000e000 0x0 0x100>; interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>; diff --git a/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi b/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi index a80c578484ba..b6d70d0073e7 100644 --- a/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi +++ b/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi @@ -60,7 +60,7 @@ vddrf-supply = <&vreg_l1_1p3>; vddch0-supply = <&vdd_ch0_3p3>; - local-bd-address = [ 02 00 00 00 5a ad ]; + local-bd-address = [ 00 00 00 00 00 00 ]; max-speed = <3200000>; }; diff --git a/arch/arm64/include/asm/asm-bug.h b/arch/arm64/include/asm/asm-bug.h index 03f52f84a4f3..bc2dcc8a0000 100644 --- a/arch/arm64/include/asm/asm-bug.h +++ b/arch/arm64/include/asm/asm-bug.h @@ -28,6 +28,7 @@ 14470: .long 14471f - 14470b; \ _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \ .short flags; \ + .align 2; \ .popsection; \ 14471: #else diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 94108e2e0917..05d3f772a9b9 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -250,6 +250,7 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) case PSR_AA32_MODE_SVC: case PSR_AA32_MODE_ABT: case PSR_AA32_MODE_UND: + case PSR_AA32_MODE_SYS: if (!vcpu_el1_is_32bit(vcpu)) return -EINVAL; break; @@ -270,7 +271,7 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) if (*vcpu_cpsr(vcpu) & PSR_MODE32_BIT) { int i, nr_reg; - switch (*vcpu_cpsr(vcpu)) { + switch (*vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK) { /* * Either we are dealing with user mode, and only the * first 15 registers (+ PC) must be narrowed to 32bit. diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index 9f3663facaa0..198c4c919c67 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -430,7 +430,9 @@ resume: movec %a0,%dfc /* restore status register */ - movew %a1@(TASK_THREAD+THREAD_SR),%sr + movew %a1@(TASK_THREAD+THREAD_SR),%d0 + oriw #0x0700,%d0 + movew %d0,%sr rts diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c index 4fab34791758..060394b00037 100644 --- a/arch/m68k/mac/misc.c +++ b/arch/m68k/mac/misc.c @@ -451,30 +451,18 @@ void mac_poweroff(void) void mac_reset(void) { - if (macintosh_config->adb_type == MAC_ADB_II && - macintosh_config->ident != MAC_MODEL_SE30) { - /* need ROMBASE in booter */ - /* indeed, plus need to MAP THE ROM !! */ - - if (mac_bi_data.rombase == 0) - mac_bi_data.rombase = 0x40800000; - - /* works on some */ - rom_reset = (void *) (mac_bi_data.rombase + 0xa); - - local_irq_disable(); - rom_reset(); #ifdef CONFIG_ADB_CUDA - } else if (macintosh_config->adb_type == MAC_ADB_EGRET || - macintosh_config->adb_type == MAC_ADB_CUDA) { + if (macintosh_config->adb_type == MAC_ADB_EGRET || + macintosh_config->adb_type == MAC_ADB_CUDA) { cuda_restart(); + } else #endif #ifdef CONFIG_ADB_PMU - } else if (macintosh_config->adb_type == MAC_ADB_PB2) { + if (macintosh_config->adb_type == MAC_ADB_PB2) { pmu_restart(); + } else #endif - } else if (CPU_IS_030) { - + if (CPU_IS_030) { /* 030-specific reset routine. The idea is general, but the * specific registers to reset are '030-specific. Until I * have a non-030 machine, I can't test anything else. @@ -522,6 +510,18 @@ void mac_reset(void) "jmp %/a0@\n\t" /* jump to the reset vector */ ".chip 68k" : : "r" (offset), "a" (rombase) : "a0"); + } else { + /* need ROMBASE in booter */ + /* indeed, plus need to MAP THE ROM !! */ + + if (mac_bi_data.rombase == 0) + mac_bi_data.rombase = 0x40800000; + + /* works on some */ + rom_reset = (void *)(mac_bi_data.rombase + 0xa); + + local_irq_disable(); + rom_reset(); } /* should never get here */ diff --git a/arch/microblaze/kernel/Makefile b/arch/microblaze/kernel/Makefile index 15a20eb814ce..46dcc3b6a00f 100644 --- a/arch/microblaze/kernel/Makefile +++ b/arch/microblaze/kernel/Makefile @@ -7,7 +7,6 @@ ifdef CONFIG_FUNCTION_TRACER # Do not trace early boot code and low level code CFLAGS_REMOVE_timer.o = -pg CFLAGS_REMOVE_intc.o = -pg -CFLAGS_REMOVE_early_printk.o = -pg CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_process.o = -pg endif diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c index 85dbda4a08a8..03da36dc6d9c 100644 --- a/arch/microblaze/kernel/cpu/cpuinfo-static.c +++ b/arch/microblaze/kernel/cpu/cpuinfo-static.c @@ -18,7 +18,7 @@ static const char family_string[] = CONFIG_XILINX_MICROBLAZE0_FAMILY; static const char cpu_ver_string[] = CONFIG_XILINX_MICROBLAZE0_HW_VER; #define err_printk(x) \ - early_printk("ERROR: Microblaze " x "-different for kernel and DTS\n"); + pr_err("ERROR: Microblaze " x "-different for kernel and DTS\n"); void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu) { diff --git a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c index 00297e8e1c88..317508493b81 100644 --- a/arch/parisc/kernel/parisc_ksyms.c +++ b/arch/parisc/kernel/parisc_ksyms.c @@ -21,6 +21,7 @@ EXPORT_SYMBOL(memset); #include <linux/atomic.h> EXPORT_SYMBOL(__xchg8); EXPORT_SYMBOL(__xchg32); +EXPORT_SYMBOL(__cmpxchg_u8); EXPORT_SYMBOL(__cmpxchg_u32); EXPORT_SYMBOL(__cmpxchg_u64); #ifdef CONFIG_SMP diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 9bcf345cb208..c25f160bb997 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -513,7 +513,7 @@ struct hvcall_mpp_data { unsigned long backing_mem; }; -int h_get_mpp(struct hvcall_mpp_data *); +long h_get_mpp(struct hvcall_mpp_data *mpp_data); struct hvcall_mpp_x_data { unsigned long coalesced_bytes; diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 6c196b941355..c2fff9a33928 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -1886,10 +1886,10 @@ out: * h_get_mpp * H_GET_MPP hcall returns info in 7 parms */ -int h_get_mpp(struct hvcall_mpp_data *mpp_data) +long h_get_mpp(struct hvcall_mpp_data *mpp_data) { - int rc; - unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; + unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + long rc; rc = plpar_hcall9(H_GET_MPP, retbuf); diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c index a291b5a94d4d..fea4dfa54e3c 100644 --- a/arch/powerpc/platforms/pseries/lparcfg.c +++ b/arch/powerpc/platforms/pseries/lparcfg.c @@ -112,8 +112,8 @@ struct hvcall_ppp_data { */ static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) { - unsigned long rc; - unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; + unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + long rc; rc = plpar_hcall9(H_GET_PPP, retbuf); @@ -192,7 +192,7 @@ static void parse_ppp_data(struct seq_file *m) struct hvcall_ppp_data ppp_data; struct device_node *root; const __be32 *perf_level; - int rc; + long rc; rc = h_get_ppp(&ppp_data); if (rc) diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index c55ccec0a169..d9d366829370 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -569,10 +569,12 @@ static const struct fsl_msi_feature ipic_msi_feature = { .msiir_offset = 0x38, }; +#ifdef CONFIG_EPAPR_PARAVIRT static const struct fsl_msi_feature vmpic_msi_feature = { .fsl_pic_ip = FSL_PIC_IP_VMPIC, .msiir_offset = 0, }; +#endif static const struct of_device_id fsl_of_msi_ids[] = { { diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S index 5ca2860cc06c..851c967c49cc 100644 --- a/arch/riscv/kernel/entry.S +++ b/arch/riscv/kernel/entry.S @@ -231,7 +231,7 @@ ret_from_syscall_rejected: andi t0, t0, _TIF_SYSCALL_WORK bnez t0, handle_syscall_trace_exit -ret_from_exception: +SYM_CODE_START_NOALIGN(ret_from_exception) REG_L s0, PT_STATUS(sp) csrc CSR_STATUS, SR_IE #ifdef CONFIG_TRACE_IRQFLAGS @@ -245,6 +245,7 @@ ret_from_exception: andi s0, s0, SR_SPP #endif bnez s0, resume_kernel +SYM_CODE_END(ret_from_exception) resume_userspace: /* Interrupts must be disabled here so flags are checked atomically */ diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index 894ae66421a7..94721c484d63 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -18,6 +18,18 @@ register unsigned long sp_in_global __asm__("sp"); #ifdef CONFIG_FRAME_POINTER +extern asmlinkage void ret_from_exception(void); + +static inline int fp_is_valid(unsigned long fp, unsigned long sp) +{ + unsigned long low, high; + + low = sp + sizeof(struct stackframe); + high = ALIGN(sp, THREAD_SIZE); + + return !(fp < low || fp > high || fp & 0x07); +} + void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, bool (*fn)(void *, unsigned long), void *arg) { @@ -41,27 +53,32 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, } for (;;) { - unsigned long low, high; struct stackframe *frame; if (unlikely(!__kernel_text_address(pc) || (level++ >= 0 && !fn(arg, pc)))) break; - /* Validate frame pointer */ - low = sp + sizeof(struct stackframe); - high = ALIGN(sp, THREAD_SIZE); - if (unlikely(fp < low || fp > high || fp & 0x7)) + if (unlikely(!fp_is_valid(fp, sp))) break; + /* Unwind stack frame */ frame = (struct stackframe *)fp - 1; sp = fp; - if (regs && (regs->epc == pc) && (frame->fp & 0x7)) { + if (regs && (regs->epc == pc) && fp_is_valid(frame->ra, sp)) { + /* We hit function where ra is not saved on the stack */ fp = frame->ra; pc = regs->ra; } else { fp = frame->fp; pc = ftrace_graph_ret_addr(current, NULL, frame->ra, &frame->ra); + if (pc == (unsigned long)ret_from_exception) { + if (unlikely(!__kernel_text_address(pc) || !fn(arg, pc))) + break; + + pc = ((struct pt_regs *)sp)->epc; + fp = ((struct pt_regs *)sp)->s0; + } } } diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index 1aa11a8f57dd..05fed61c5e3b 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -27,7 +27,6 @@ int __bootdata(is_full_image) = 1; struct initrd_data __bootdata(initrd_data); u64 __bootdata_preserved(stfle_fac_list[16]); -u64 __bootdata_preserved(alt_stfle_fac_list[16]); struct oldmem_data __bootdata_preserved(oldmem_data); void error(char *x) diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index 646b12981f20..0f6ff2008a15 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -161,28 +161,86 @@ typedef struct { unsigned char bytes[16]; } cpacf_mask_t; -/** - * cpacf_query() - check if a specific CPACF function is available - * @opcode: the opcode of the crypto instruction - * @func: the function code to test for - * - * Executes the query function for the given crypto instruction @opcode - * and checks if @func is available - * - * Returns 1 if @func is available for @opcode, 0 otherwise +/* + * Prototype for a not existing function to produce a link + * error if __cpacf_query() or __cpacf_check_opcode() is used + * with an invalid compile time const opcode. */ -static __always_inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask) +void __cpacf_bad_opcode(void); + +static __always_inline void __cpacf_query_rre(u32 opc, u8 r1, u8 r2, + cpacf_mask_t *mask) { asm volatile( - " lghi 0,0\n" /* query function */ - " lgr 1,%[mask]\n" - " spm 0\n" /* pckmo doesn't change the cc */ - /* Parameter regs are ignored, but must be nonzero and unique */ - "0: .insn rrf,%[opc] << 16,2,4,6,0\n" - " brc 1,0b\n" /* handle partial completion */ - : "=m" (*mask) - : [mask] "d" ((unsigned long)mask), [opc] "i" (opcode) - : "cc", "0", "1"); + " la %%r1,%[mask]\n" + " xgr %%r0,%%r0\n" + " .insn rre,%[opc] << 16,%[r1],%[r2]\n" + : [mask] "=R" (*mask) + : [opc] "i" (opc), + [r1] "i" (r1), [r2] "i" (r2) + : "cc", "r0", "r1"); +} + +static __always_inline void __cpacf_query_rrf(u32 opc, + u8 r1, u8 r2, u8 r3, u8 m4, + cpacf_mask_t *mask) +{ + asm volatile( + " la %%r1,%[mask]\n" + " xgr %%r0,%%r0\n" + " .insn rrf,%[opc] << 16,%[r1],%[r2],%[r3],%[m4]\n" + : [mask] "=R" (*mask) + : [opc] "i" (opc), [r1] "i" (r1), [r2] "i" (r2), + [r3] "i" (r3), [m4] "i" (m4) + : "cc", "r0", "r1"); +} + +static __always_inline void __cpacf_query(unsigned int opcode, + cpacf_mask_t *mask) +{ + switch (opcode) { + case CPACF_KDSA: + __cpacf_query_rre(CPACF_KDSA, 0, 2, mask); + break; + case CPACF_KIMD: + __cpacf_query_rre(CPACF_KIMD, 0, 2, mask); + break; + case CPACF_KLMD: + __cpacf_query_rre(CPACF_KLMD, 0, 2, mask); + break; + case CPACF_KM: + __cpacf_query_rre(CPACF_KM, 2, 4, mask); + break; + case CPACF_KMA: + __cpacf_query_rrf(CPACF_KMA, 2, 4, 6, 0, mask); + break; + case CPACF_KMAC: + __cpacf_query_rre(CPACF_KMAC, 0, 2, mask); + break; + case CPACF_KMC: + __cpacf_query_rre(CPACF_KMC, 2, 4, mask); + break; + case CPACF_KMCTR: + __cpacf_query_rrf(CPACF_KMCTR, 2, 4, 6, 0, mask); + break; + case CPACF_KMF: + __cpacf_query_rre(CPACF_KMF, 2, 4, mask); + break; + case CPACF_KMO: + __cpacf_query_rre(CPACF_KMO, 2, 4, mask); + break; + case CPACF_PCC: + __cpacf_query_rre(CPACF_PCC, 0, 0, mask); + break; + case CPACF_PCKMO: + __cpacf_query_rre(CPACF_PCKMO, 0, 0, mask); + break; + case CPACF_PRNO: + __cpacf_query_rre(CPACF_PRNO, 2, 4, mask); + break; + default: + __cpacf_bad_opcode(); + } } static __always_inline int __cpacf_check_opcode(unsigned int opcode) @@ -206,10 +264,21 @@ static __always_inline int __cpacf_check_opcode(unsigned int opcode) case CPACF_KMA: return test_facility(146); /* check for MSA8 */ default: - BUG(); + __cpacf_bad_opcode(); + return 0; } } +/** + * cpacf_query() - check if a specific CPACF function is available + * @opcode: the opcode of the crypto instruction + * @func: the function code to test for + * + * Executes the query function for the given crypto instruction @opcode + * and checks if @func is available + * + * Returns 1 if @func is available for @opcode, 0 otherwise + */ static __always_inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask) { if (__cpacf_check_opcode(opcode)) { diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 834b1ec5dd7a..d2ba82873abf 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -833,8 +833,8 @@ static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj, scpdata_len += padding; } - reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len; - reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len; + reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN + scpdata_len; + reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN + scpdata_len; reipl_block_nvme->nvme.scp_data_len = scpdata_len; return count; @@ -1603,9 +1603,9 @@ static int __init dump_nvme_init(void) } dump_block_nvme->hdr.len = IPL_BP_NVME_LEN; dump_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION; - dump_block_nvme->fcp.len = IPL_BP0_NVME_LEN; - dump_block_nvme->fcp.pbt = IPL_PBT_NVME; - dump_block_nvme->fcp.opt = IPL_PB0_NVME_OPT_DUMP; + dump_block_nvme->nvme.len = IPL_BP0_NVME_LEN; + dump_block_nvme->nvme.pbt = IPL_PBT_NVME; + dump_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_DUMP; dump_capabilities |= DUMP_TYPE_NVME; return 0; } diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index b7ce6c7c84c6..50cb4c3d3682 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -154,7 +154,7 @@ unsigned int __bootdata_preserved(zlib_dfltcc_support); EXPORT_SYMBOL(zlib_dfltcc_support); u64 __bootdata_preserved(stfle_fac_list[16]); EXPORT_SYMBOL(stfle_fac_list); -u64 __bootdata_preserved(alt_stfle_fac_list[16]); +u64 alt_stfle_fac_list[16]; struct oldmem_data __bootdata_preserved(oldmem_data); unsigned long VMALLOC_START; diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile index cc513add48eb..6056f2ae0263 100644 --- a/arch/s390/kernel/vdso32/Makefile +++ b/arch/s390/kernel/vdso32/Makefile @@ -20,7 +20,10 @@ KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) KBUILD_AFLAGS_32 += -m31 -s KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) -KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin +KBUILD_CFLAGS_32 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS)) +KBUILD_CFLAGS_32 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_32)) +KBUILD_CFLAGS_32 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_32)) +KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin -fasynchronous-unwind-tables LDFLAGS_vdso32.so.dbg += -shared -soname=linux-vdso32.so.1 \ --hash-style=both --build-id=sha1 -melf_s390 -T diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index 42d918d50a1f..498d56757c4d 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -25,7 +25,11 @@ KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS)) KBUILD_AFLAGS_64 += -m64 -s KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS)) -KBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin +KBUILD_CFLAGS_64 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS_64)) +KBUILD_CFLAGS_64 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_64)) +KBUILD_CFLAGS_64 := $(filter-out -munaligned-symbols,$(KBUILD_CFLAGS_64)) +KBUILD_CFLAGS_64 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_64)) +KBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin -fasynchronous-unwind-tables ldflags-y := -shared -soname=linux-vdso64.so.1 \ --hash-style=both --build-id=sha1 -T diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 1a374d021e25..88020b4ddbab 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -1229,8 +1229,12 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, EMIT6_DISP_LH(0xeb000000, is32 ? (op32) : (op64), \ (insn->imm & BPF_FETCH) ? src_reg : REG_W0, \ src_reg, dst_reg, off); \ - if (is32 && (insn->imm & BPF_FETCH)) \ - EMIT_ZERO(src_reg); \ + if (insn->imm & BPF_FETCH) { \ + /* bcr 14,0 - see atomic_fetch_{add,and,or,xor}() */ \ + _EMIT2(0x07e0); \ + if (is32) \ + EMIT_ZERO(src_reg); \ + } \ } while (0) case BPF_ADD: case BPF_ADD | BPF_FETCH: diff --git a/arch/sh/kernel/kprobes.c b/arch/sh/kernel/kprobes.c index 1c7f358ef0be..5db45517bb1e 100644 --- a/arch/sh/kernel/kprobes.c +++ b/arch/sh/kernel/kprobes.c @@ -44,17 +44,12 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) if (OPCODE_RTE(opcode)) return -EFAULT; /* Bad breakpoint */ + memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); p->opcode = opcode; return 0; } -void __kprobes arch_copy_kprobe(struct kprobe *p) -{ - memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); - p->opcode = *p->addr; -} - void __kprobes arch_arm_kprobe(struct kprobe *p) { *p->addr = BREAKPOINT_INSTRUCTION; diff --git a/arch/sh/lib/checksum.S b/arch/sh/lib/checksum.S index 3e07074e0098..06fed5a21e8b 100644 --- a/arch/sh/lib/checksum.S +++ b/arch/sh/lib/checksum.S @@ -33,7 +33,8 @@ */ /* - * asmlinkage __wsum csum_partial(const void *buf, int len, __wsum sum); + * unsigned int csum_partial(const unsigned char *buf, int len, + * unsigned int sum); */ .text @@ -45,31 +46,11 @@ ENTRY(csum_partial) * Fortunately, it is easy to convert 2-byte alignment to 4-byte * alignment for the unrolled loop. */ + mov r5, r1 mov r4, r0 - tst #3, r0 ! Check alignment. - bt/s 2f ! Jump if alignment is ok. - mov r4, r7 ! Keep a copy to check for alignment + tst #2, r0 ! Check alignment. + bt 2f ! Jump if alignment is ok. ! - tst #1, r0 ! Check alignment. - bt 21f ! Jump if alignment is boundary of 2bytes. - - ! buf is odd - tst r5, r5 - add #-1, r5 - bt 9f - mov.b @r4+, r0 - extu.b r0, r0 - addc r0, r6 ! t=0 from previous tst - mov r6, r0 - shll8 r6 - shlr16 r0 - shlr8 r0 - or r0, r6 - mov r4, r0 - tst #2, r0 - bt 2f -21: - ! buf is 2 byte aligned (len could be 0) add #-2, r5 ! Alignment uses up two bytes. cmp/pz r5 ! bt/s 1f ! Jump if we had at least two bytes. @@ -77,17 +58,16 @@ ENTRY(csum_partial) bra 6f add #2, r5 ! r5 was < 2. Deal with it. 1: + mov r5, r1 ! Save new len for later use. mov.w @r4+, r0 extu.w r0, r0 addc r0, r6 bf 2f add #1, r6 2: - ! buf is 4 byte aligned (len could be 0) - mov r5, r1 mov #-5, r0 - shld r0, r1 - tst r1, r1 + shld r0, r5 + tst r5, r5 bt/s 4f ! if it's =0, go to 4f clrt .align 2 @@ -109,31 +89,30 @@ ENTRY(csum_partial) addc r0, r6 addc r2, r6 movt r0 - dt r1 + dt r5 bf/s 3b cmp/eq #1, r0 - ! here, we know r1==0 - addc r1, r6 ! add carry to r6 + ! here, we know r5==0 + addc r5, r6 ! add carry to r6 4: - mov r5, r0 + mov r1, r0 and #0x1c, r0 tst r0, r0 - bt 6f - ! 4 bytes or more remaining - mov r0, r1 - shlr2 r1 + bt/s 6f + mov r0, r5 + shlr2 r5 mov #0, r2 5: addc r2, r6 mov.l @r4+, r2 movt r0 - dt r1 + dt r5 bf/s 5b cmp/eq #1, r0 addc r2, r6 - addc r1, r6 ! r1==0 here, so it means add carry-bit + addc r5, r6 ! r5==0 here, so it means add carry-bit 6: - ! 3 bytes or less remaining + mov r1, r5 mov #3, r0 and r0, r5 tst r5, r5 @@ -159,16 +138,6 @@ ENTRY(csum_partial) mov #0, r0 addc r0, r6 9: - ! Check if the buffer was misaligned, if so realign sum - mov r7, r0 - tst #1, r0 - bt 10f - mov r6, r0 - shll8 r6 - shlr16 r0 - shlr8 r0 - or r0, r6 -10: rts mov r6, r0 diff --git a/arch/sparc/include/asm/smp_64.h b/arch/sparc/include/asm/smp_64.h index e75783b6abc4..16ab904616a0 100644 --- a/arch/sparc/include/asm/smp_64.h +++ b/arch/sparc/include/asm/smp_64.h @@ -47,7 +47,6 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask); int hard_smp_processor_id(void); #define raw_smp_processor_id() (current_thread_info()->cpu) -void smp_fill_in_cpu_possible_map(void); void smp_fill_in_sib_core_maps(void); void cpu_play_dead(void); @@ -77,7 +76,6 @@ void __cpu_die(unsigned int cpu); #define smp_fill_in_sib_core_maps() do { } while (0) #define smp_fetch_global_regs() do { } while (0) #define smp_fetch_global_pmu() do { } while (0) -#define smp_fill_in_cpu_possible_map() do { } while (0) #define smp_init_cpu_poke() do { } while (0) #define scheduler_poke() do { } while (0) diff --git a/arch/sparc/include/uapi/asm/termbits.h b/arch/sparc/include/uapi/asm/termbits.h index ce5ad5d0f105..0614e179bccc 100644 --- a/arch/sparc/include/uapi/asm/termbits.h +++ b/arch/sparc/include/uapi/asm/termbits.h @@ -13,16 +13,6 @@ typedef unsigned int tcflag_t; typedef unsigned long tcflag_t; #endif -#define NCC 8 -struct termio { - unsigned short c_iflag; /* input mode flags */ - unsigned short c_oflag; /* output mode flags */ - unsigned short c_cflag; /* control mode flags */ - unsigned short c_lflag; /* local mode flags */ - unsigned char c_line; /* line discipline */ - unsigned char c_cc[NCC]; /* control characters */ -}; - #define NCCS 17 struct termios { tcflag_t c_iflag; /* input mode flags */ diff --git a/arch/sparc/include/uapi/asm/termios.h b/arch/sparc/include/uapi/asm/termios.h index ee86f4093d83..cceb32260881 100644 --- a/arch/sparc/include/uapi/asm/termios.h +++ b/arch/sparc/include/uapi/asm/termios.h @@ -40,5 +40,14 @@ struct winsize { unsigned short ws_ypixel; }; +#define NCC 8 +struct termio { + unsigned short c_iflag; /* input mode flags */ + unsigned short c_oflag; /* output mode flags */ + unsigned short c_cflag; /* control mode flags */ + unsigned short c_lflag; /* local mode flags */ + unsigned char c_line; /* line discipline */ + unsigned char c_cc[NCC]; /* control characters */ +}; #endif /* _UAPI_SPARC_TERMIOS_H */ diff --git a/arch/sparc/kernel/prom_64.c b/arch/sparc/kernel/prom_64.c index f883a50fa333..4eae633f7198 100644 --- a/arch/sparc/kernel/prom_64.c +++ b/arch/sparc/kernel/prom_64.c @@ -483,7 +483,9 @@ static void *record_one_cpu(struct device_node *dp, int cpuid, int arg) ncpus_probed++; #ifdef CONFIG_SMP set_cpu_present(cpuid, true); - set_cpu_possible(cpuid, true); + + if (num_possible_cpus() < nr_cpu_ids) + set_cpu_possible(cpuid, true); #endif return NULL; } diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 48abee4eee29..9e6e7f983d14 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -684,7 +684,6 @@ void __init setup_arch(char **cmdline_p) paging_init(); init_sparc64_elf_hwcap(); - smp_fill_in_cpu_possible_map(); /* * Once the OF device tree and MDESC have been setup and nr_cpus has * been parsed, we know the list of possible cpus. Therefore we can diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 0224d8f19ed6..1414efd49761 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1210,20 +1210,6 @@ void __init smp_setup_processor_id(void) xcall_deliver_impl = hypervisor_xcall_deliver; } -void __init smp_fill_in_cpu_possible_map(void) -{ - int possible_cpus = num_possible_cpus(); - int i; - - if (possible_cpus > nr_cpu_ids) - possible_cpus = nr_cpu_ids; - - for (i = 0; i < possible_cpus; i++) - set_cpu_possible(i, true); - for (; i < NR_CPUS; i++) - set_cpu_possible(i, false); -} - void smp_fill_in_sib_core_maps(void) { unsigned int i; diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 02b0befd6763..95ad6b190d1d 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -673,24 +673,26 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_port *port, goto cleanup; } - *winch = ((struct winch) { .list = LIST_HEAD_INIT(winch->list), - .fd = fd, + *winch = ((struct winch) { .fd = fd, .tty_fd = tty_fd, .pid = pid, .port = port, .stack = stack }); + spin_lock(&winch_handler_lock); + list_add(&winch->list, &winch_handlers); + spin_unlock(&winch_handler_lock); + if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, IRQF_SHARED, "winch", winch) < 0) { printk(KERN_ERR "register_winch_irq - failed to register " "IRQ\n"); + spin_lock(&winch_handler_lock); + list_del(&winch->list); + spin_unlock(&winch_handler_lock); goto out_free; } - spin_lock(&winch_handler_lock); - list_add(&winch->list, &winch_handlers); - spin_unlock(&winch_handler_lock); - return; out_free: diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index fefd343412c7..b3a4cc5a2091 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -1097,7 +1097,7 @@ static int __init ubd_init(void) if (irq_req_buffer == NULL) { printk(KERN_ERR "Failed to initialize ubd buffering\n"); - return -1; + return -ENOMEM; } io_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE, sizeof(struct io_thread_req *), @@ -1108,7 +1108,7 @@ static int __init ubd_init(void) if (io_req_buffer == NULL) { printk(KERN_ERR "Failed to initialize ubd buffering\n"); - return -1; + return -ENOMEM; } platform_driver_register(&ubd_driver); mutex_lock(&ubd_lock); diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c index 45a4bcd27a39..310fb14a85f7 100644 --- a/arch/um/drivers/vector_kern.c +++ b/arch/um/drivers/vector_kern.c @@ -141,7 +141,7 @@ static bool get_bpf_flash(struct arglist *def) if (allow != NULL) { if (kstrtoul(allow, 10, &result) == 0) - return (allow > 0); + return result > 0; } return false; } diff --git a/arch/um/include/asm/mmu.h b/arch/um/include/asm/mmu.h index 5b072aba5b65..a7cb380c0b5c 100644 --- a/arch/um/include/asm/mmu.h +++ b/arch/um/include/asm/mmu.h @@ -15,8 +15,6 @@ typedef struct mm_context { struct page *stub_pages[2]; } mm_context_t; -extern void __switch_mm(struct mm_id * mm_idp); - /* Avoid tangled inclusion with asm/ldt.h */ extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm); extern void free_ldt(struct mm_context *mm); diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h index e82e203f5f41..92dbf727e384 100644 --- a/arch/um/include/shared/skas/mm_id.h +++ b/arch/um/include/shared/skas/mm_id.h @@ -15,4 +15,6 @@ struct mm_id { int kill; }; +void __switch_mm(struct mm_id *mm_idp); + #endif diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index d4d6db4dde22..5d72d52fbc1b 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -249,6 +249,7 @@ config UNWINDER_ORC config UNWINDER_FRAME_POINTER bool "Frame pointer unwinder" + select ARCH_WANT_FRAME_POINTERS select FRAME_POINTER help This option enables the frame pointer unwinder for unwinding kernel @@ -272,7 +273,3 @@ config UNWINDER_GUESS overhead. endchoice - -config FRAME_POINTER - depends on !UNWINDER_ORC && !UNWINDER_GUESS - bool diff --git a/arch/x86/crypto/nh-avx2-x86_64.S b/arch/x86/crypto/nh-avx2-x86_64.S index 6a0b15e7196a..54c0ee41209d 100644 --- a/arch/x86/crypto/nh-avx2-x86_64.S +++ b/arch/x86/crypto/nh-avx2-x86_64.S @@ -153,5 +153,6 @@ SYM_FUNC_START(nh_avx2) vpaddq T1, T0, T0 vpaddq T4, T0, T0 vmovdqu T0, (HASH) + vzeroupper RET SYM_FUNC_END(nh_avx2) diff --git a/arch/x86/crypto/sha256-avx2-asm.S b/arch/x86/crypto/sha256-avx2-asm.S index 9bcdbc47b8b4..f7d728776855 100644 --- a/arch/x86/crypto/sha256-avx2-asm.S +++ b/arch/x86/crypto/sha256-avx2-asm.S @@ -710,6 +710,7 @@ done_hash: popq %r13 popq %r12 popq %rbx + vzeroupper RET SYM_FUNC_END(sha256_transform_rorx) diff --git a/arch/x86/crypto/sha512-avx2-asm.S b/arch/x86/crypto/sha512-avx2-asm.S index 5cdaab7d6901..1c4e5d88e167 100644 --- a/arch/x86/crypto/sha512-avx2-asm.S +++ b/arch/x86/crypto/sha512-avx2-asm.S @@ -679,6 +679,7 @@ done_hash: pop %r12 pop %rbx + vzeroupper RET SYM_FUNC_END(sha512_transform_rorx) diff --git a/arch/x86/entry/vsyscall/vsyscall_64.c b/arch/x86/entry/vsyscall/vsyscall_64.c index fd2ee9408e91..ba3172d5b328 100644 --- a/arch/x86/entry/vsyscall/vsyscall_64.c +++ b/arch/x86/entry/vsyscall/vsyscall_64.c @@ -98,11 +98,6 @@ static int addr_to_vsyscall_nr(unsigned long addr) static bool write_ok_or_segv(unsigned long ptr, size_t size) { - /* - * XXX: if access_ok, get_user, and put_user handled - * sig_on_uaccess_err, this could go away. - */ - if (!access_ok((void __user *)ptr, size)) { struct thread_struct *thread = ¤t->thread; @@ -120,10 +115,8 @@ static bool write_ok_or_segv(unsigned long ptr, size_t size) bool emulate_vsyscall(unsigned long error_code, struct pt_regs *regs, unsigned long address) { - struct task_struct *tsk; unsigned long caller; int vsyscall_nr, syscall_nr, tmp; - int prev_sig_on_uaccess_err; long ret; unsigned long orig_dx; @@ -172,8 +165,6 @@ bool emulate_vsyscall(unsigned long error_code, goto sigsegv; } - tsk = current; - /* * Check for access_ok violations and find the syscall nr. * @@ -234,12 +225,8 @@ bool emulate_vsyscall(unsigned long error_code, goto do_ret; /* skip requested */ /* - * With a real vsyscall, page faults cause SIGSEGV. We want to - * preserve that behavior to make writing exploits harder. + * With a real vsyscall, page faults cause SIGSEGV. */ - prev_sig_on_uaccess_err = current->thread.sig_on_uaccess_err; - current->thread.sig_on_uaccess_err = 1; - ret = -EFAULT; switch (vsyscall_nr) { case 0: @@ -262,23 +249,12 @@ bool emulate_vsyscall(unsigned long error_code, break; } - current->thread.sig_on_uaccess_err = prev_sig_on_uaccess_err; - check_fault: if (ret == -EFAULT) { /* Bad news -- userspace fed a bad pointer to a vsyscall. */ warn_bad_vsyscall(KERN_INFO, regs, "vsyscall fault (exploit attempt?)"); - - /* - * If we failed to generate a signal for any reason, - * generate one here. (This should be impossible.) - */ - if (WARN_ON_ONCE(!sigismember(&tsk->pending.signal, SIGBUS) && - !sigismember(&tsk->pending.signal, SIGSEGV))) - goto sigsegv; - - return true; /* Don't emulate the ret. */ + goto sigsegv; } regs->ax = ret; diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index bbbf27cfe701..0702e0c5dbb8 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -519,7 +519,6 @@ struct thread_struct { unsigned long iopl_emul; unsigned int iopl_warn:1; - unsigned int sig_on_uaccess_err:1; /* * Protection Keys Register for Userspace. Loaded immediately on diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index c132daabe615..fb539244c546 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -982,7 +982,8 @@ static void __send_cleanup_vector(struct apic_chip_data *apicd) hlist_add_head(&apicd->clist, per_cpu_ptr(&cleanup_list, cpu)); apic->send_IPI(cpu, IRQ_MOVE_CLEANUP_VECTOR); } else { - apicd->prev_vector = 0; + pr_warn("IRQ %u schedule cleanup for offline CPU %u\n", apicd->irq, cpu); + free_moved_vector(apicd); } raw_spin_unlock(&vector_lock); } @@ -1019,6 +1020,7 @@ void irq_complete_move(struct irq_cfg *cfg) */ void irq_force_complete_move(struct irq_desc *desc) { + unsigned int cpu = smp_processor_id(); struct apic_chip_data *apicd; struct irq_data *irqd; unsigned int vector; @@ -1043,10 +1045,11 @@ void irq_force_complete_move(struct irq_desc *desc) goto unlock; /* - * If prev_vector is empty, no action required. + * If prev_vector is empty or the descriptor is neither currently + * nor previously on the outgoing CPU no action required. */ vector = apicd->prev_vector; - if (!vector) + if (!vector || (apicd->cpu != cpu && apicd->prev_cpu != cpu)) goto unlock; /* diff --git a/arch/x86/kernel/tsc_sync.c b/arch/x86/kernel/tsc_sync.c index 9452dc9664b5..7a1e3f53be24 100644 --- a/arch/x86/kernel/tsc_sync.c +++ b/arch/x86/kernel/tsc_sync.c @@ -192,11 +192,9 @@ bool tsc_store_and_check_tsc_adjust(bool bootcpu) cur->warned = false; /* - * If a non-zero TSC value for socket 0 may be valid then the default - * adjusted value cannot assumed to be zero either. + * The default adjust value cannot be assumed to be zero on any socket. */ - if (tsc_async_resets) - cur->adjusted = bootval; + cur->adjusted = bootval; /* * Check whether this CPU is the first in a package to come up. In diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 6222aa3221f5..786584a9904c 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -934,9 +934,8 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function) entry->eax = entry->ebx = entry->ecx = 0; break; case 0x80000008: { - unsigned g_phys_as = (entry->eax >> 16) & 0xff; - unsigned virt_as = max((entry->eax >> 8) & 0xff, 48U); - unsigned phys_as = entry->eax & 0xff; + unsigned int virt_as = max((entry->eax >> 8) & 0xff, 48U); + unsigned int phys_as; /* * If TDP (NPT) is disabled use the adjusted host MAXPHYADDR as @@ -944,16 +943,16 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function) * reductions in MAXPHYADDR for memory encryption affect shadow * paging, too. * - * If TDP is enabled but an explicit guest MAXPHYADDR is not - * provided, use the raw bare metal MAXPHYADDR as reductions to - * the HPAs do not affect GPAs. + * If TDP is enabled, use the raw bare metal MAXPHYADDR as + * reductions to the HPAs do not affect GPAs. */ - if (!tdp_enabled) - g_phys_as = boot_cpu_data.x86_phys_bits; - else if (!g_phys_as) - g_phys_as = phys_as; + if (!tdp_enabled) { + phys_as = boot_cpu_data.x86_phys_bits; + } else { + phys_as = entry->eax & 0xff; + } - entry->eax = g_phys_as | (virt_as << 8); + entry->eax = phys_as | (virt_as << 8); entry->ecx &= ~(GENMASK(31, 16) | GENMASK(11, 8)); entry->edx = 0; cpuid_entry_override(entry, CPUID_8000_0008_EBX); diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt index ec31f5b60323..1c25c1072a84 100644 --- a/arch/x86/lib/x86-opcode-map.txt +++ b/arch/x86/lib/x86-opcode-map.txt @@ -148,7 +148,7 @@ AVXcode: 65: SEG=GS (Prefix) 66: Operand-Size (Prefix) 67: Address-Size (Prefix) -68: PUSH Iz (d64) +68: PUSH Iz 69: IMUL Gv,Ev,Iz 6a: PUSH Ib (d64) 6b: IMUL Gv,Ev,Ib diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index abc6fbc3d5f2..31afd82b9524 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -716,39 +716,8 @@ kernelmode_fixup_or_oops(struct pt_regs *regs, unsigned long error_code, WARN_ON_ONCE(user_mode(regs)); /* Are we prepared to handle this kernel fault? */ - if (fixup_exception(regs, X86_TRAP_PF, error_code, address)) { - /* - * Any interrupt that takes a fault gets the fixup. This makes - * the below recursive fault logic only apply to a faults from - * task context. - */ - if (in_interrupt()) - return; - - /* - * Per the above we're !in_interrupt(), aka. task context. - * - * In this case we need to make sure we're not recursively - * faulting through the emulate_vsyscall() logic. - */ - if (current->thread.sig_on_uaccess_err && signal) { - sanitize_error_code(address, &error_code); - - set_signal_archinfo(address, error_code); - - if (si_code == SEGV_PKUERR) { - force_sig_pkuerr((void __user *)address, pkey); - } else { - /* XXX: hwpoison faults will set the wrong code. */ - force_sig_fault(signal, si_code, (void __user *)address); - } - } - - /* - * Barring that, we can do the fixup and be happy. - */ + if (fixup_exception(regs, X86_TRAP_PF, error_code, address)) return; - } /* * AMD erratum #91 manifests as a spurious page fault on a PREFETCH diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 7a7701d1e18d..59373a4abfb4 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -41,7 +41,8 @@ KCOV_INSTRUMENT := n # make up the standalone purgatory.ro PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel -PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss -g0 +PURGATORY_CFLAGS := -mcmodel=small -ffreestanding -fno-zero-initialized-in-bss -g0 +PURGATORY_CFLAGS += -fpic -fvisibility=hidden PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING PURGATORY_CFLAGS += -fno-stack-protector diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c index 3167228ca174..d7549953bb79 100644 --- a/arch/x86/tools/relocs.c +++ b/arch/x86/tools/relocs.c @@ -692,6 +692,15 @@ static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel, if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) { continue; } + + /* + * Do not perform relocations in .notes sections; any + * values there are meant for pre-boot consumption (e.g. + * startup_xen). + */ + if (sec_applies->shdr.sh_type == SHT_NOTE) + continue; + sh_symtab = sec_symtab->symtab; sym_strtab = sec_symtab->link->strtab; for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) { |