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OpenCloudOS-Kernel/arch/riscv/kernel
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Al Viro 762df359aa
riscv: fix a nasty sigreturn bug... 
riscv has an equivalent of arm bug fixed by 653d48b221 ("arm: fix
really nasty sigreturn bug"); if signal gets caught by an interrupt that
hits when we have the right value in a0 (-513), *and* another signal
gets delivered upon sigreturn() (e.g. included into the blocked mask for
the first signal and posted while the handler had been running), the
syscall restart logics will see regs->cause equal to EXC_SYSCALL (we are
in a syscall, after all) and a0 already restored to its original value
(-513, which happens to be -ERESTARTNOINTR) and assume that we need to
apply the usual syscall restart logics.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fixes: e2c0cdfba7 ("RISC-V: User-facing API")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/YxJEiSq%2FCGaL6Gm9@ZenIV/
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
 		2022-09-17 01:48:23 -07:00
..
compat_vdso riscv: compat: vdso: Add COMPAT_VDSO base code implementation 2022-04-26 13:36:53 -07:00
probes riscv:uprobe fix SR_SPIE set/clear handling 2022-08-11 14:14:52 -07:00
vdso riscv: compat: vdso: Add COMPAT_VDSO base code implementation 2022-04-26 13:36:53 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile RISC-V: kexec: Fix build error without CONFIG_KEXEC 2022-07-14 14:23:41 -07:00
alternative.c riscv: make patch-function pointer more generic in cpu_manufacturer_info struct 2022-06-16 15:47:40 -07:00
asm-offsets.c RISC-V: Add arch functions for non-retentive suspend entry/exit 2022-03-10 09:29:31 -08:00
cacheinfo.c drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() 2021-09-01 10:29:10 +02:00
compat_signal.c riscv: compat: signal: Add rt_frame implementation 2022-05-17 16:37:21 -07:00
compat_syscall_table.c riscv: compat: syscall: Add compat_sys_call_table implementation 2022-04-26 13:36:25 -07:00
cpu-hotplug.c riscv: cpu-hotplug: clear cpu from numa map when teardown 2022-02-10 09:16:50 -08:00
cpu.c RISC-V: Add Sstc extension support 2022-08-11 14:41:52 -07:00
cpu_ops.c riscv: ensure cpu_ops_sbi is declared 2022-08-11 13:46:51 -07:00
cpu_ops_sbi.c riscv: cpu_ops_sbi: Add 64bit hartid support on RV64 2022-07-19 16:38:58 -07:00
cpu_ops_spinwait.c RISC-V: cpu_ops_spinwait.c should include head.h 2022-08-11 13:24:16 -07:00
cpufeature.c riscv: Ensure isa-ext static keys are writable 2022-08-16 18:07:43 -07:00
crash_dump.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
crash_save_regs.S RISC-V: Fixup get incorrect user mode PC for kernel mode regs 2022-08-11 08:54:40 -07:00
efi-header.S RISC-V: Add PE/COFF header for EFI stub 2020-10-02 14:31:16 -07:00
efi.c riscv: read-only pages should not be writable 2022-05-28 11:39:31 +02:00
elf_kexec.c RISCV: kexec: Fix build error without CONFIG_MODULES 2022-07-14 14:23:33 -07:00
entry.S context_tracking: Split user tracking Kconfig 2022-06-29 17:04:09 -07:00
fpu.S riscv: abstract out CSR names for supervisor vs machine mode 2019-11-05 09:20:42 -08:00
ftrace.c ftrace: Remove return value of ftrace_arch_modify_*() 2022-05-26 21:13:00 -04:00
head.S riscv: Initialize thread pointer before calling C functions 2022-06-01 21:46:23 -07:00
head.h RISC-V: Move spinwait booting method to its own config 2022-01-20 09:27:16 -08:00
image-vars.h arch/riscv:fix typo in a comment in arch/riscv/kernel/image-vars.h 2021-02-18 23:18:00 -08:00
irq.c RISC-V: Remove do_IRQ() function 2020-06-09 19:11:24 -07:00
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kexec_relocate.S riscv: Don't use va_pa_offset on kdump 2022-01-09 10:38:06 -08:00
kgdb.c riscv: Fix "no previous prototype" compile warning in kgdb.c file 2020-07-09 20:09:30 -07:00
machine_kexec.c RISC-V: Fixup schedule out issue in machine_crash_shutdown() 2022-08-11 08:54:46 -07:00
machine_kexec_file.c RISC-V: Add kexec_file support 2022-05-19 12:14:18 -07:00
mcount-dyn.S riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT 2021-01-14 15:09:05 -08:00
mcount.S riscv: Workaround mcount name prior to clang-13 2021-04-26 08:25:01 -07:00
module-sections.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
module.c riscv: implement module alternatives 2022-05-11 21:36:31 -07:00
patch.c riscv: patch_text: Fixup last cpu should be master 2022-04-22 08:29:24 -07:00
perf_callchain.c riscv: Fix fill_callchain return value 2022-03-30 23:01:42 -07:00
perf_regs.c perf/arch: Remove perf_sample_data::regs_user_copy 2020-11-09 18:12:34 +01:00
process.c This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
ptrace.c riscv: compat: ptrace: Add compat_arch_ptrace implement 2022-05-17 16:37:22 -07:00
reset.c riscv: Use do_kernel_power_off() 2022-05-19 19:30:30 +02:00
riscv_ksyms.c riscv: provide memmove implementation 2020-12-10 17:27:54 -08:00
sbi.c RISC-V: Fix IPI/RFENCE hmask on non-monotonic hartid ordering 2022-02-14 12:27:45 -08:00
setup.c RISC-V: Clean up the Zicbom block size probing 2022-09-13 02:06:11 -07:00
signal.c riscv: fix a nasty sigreturn bug... 2022-09-17 01:48:23 -07:00
smp.c Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
smpboot.c riscv: cpu: Add 64bit hartid support on RV64 2022-07-19 16:39:14 -07:00
soc.c riscv: Fix builtin DTB handling 2021-01-07 19:00:50 -08:00
stacktrace.c riscv: Rename "sp_in_global" to "current_stack_pointer" 2022-03-30 15:15:27 -07:00
suspend.c RISC-V: Add arch functions for non-retentive suspend entry/exit 2022-03-10 09:29:31 -08:00
suspend_entry.S RISC-V: Split out the XIP fixups into their own file 2022-05-25 14:43:33 -07:00
sys_riscv.c riscv: mmap with PROT_WRITE but no PROT_READ is invalid 2022-07-21 15:53:46 -07:00
syscall_table.c riscv/vdso: Refactor asm/vdso.h 2021-10-02 13:42:23 -07:00
time.c RISC-V Patches for the 5.13 Merge Window, Part 1 2021-05-06 09:24:18 -07:00
trace_irq.c riscv: fix oops caused by irqsoff latency tracer 2022-02-24 20:30:30 -08:00
trace_irq.h riscv: fix oops caused by irqsoff latency tracer 2022-02-24 20:30:30 -08:00
traps.c riscv: traps: add missing prototype 2022-08-18 14:42:58 -07:00
traps_misaligned.c riscv: traps_misaligned: do not duplicate stringify 2022-08-11 08:56:53 -07:00
vdso.c riscv: compat: Using seperated vdso_maps for compat_vdso_info 2022-05-25 17:24:06 -07:00
vmlinux-xip.lds.S riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove `.fixup` section 2022-01-05 17:53:37 -08:00
vmlinux.lds.S riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove `.fixup` section 2022-01-05 17:53:37 -08:00