Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Bring the PTRACE_SYSEMU semantics in line with the man page.
- Annotate variable assignment in get_user() with the type to avoid
sparse warnings.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Add get_user() type annotation on the !access_ok() path
arm64: Fix PTRACE_SYSEMU semantics
+5
-4
+1
-1
arch/arm64/include/asm/uaccess.h
+1
-1
arch/arm64/include/asm/uaccess.h
+4
-3
arch/arm64/kernel/ptrace.c
+4
-3
arch/arm64/kernel/ptrace.c
···
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int syscall_trace_enter(struct pt_regs *regs)
1831
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{
1832
-
if (test_thread_flag(TIF_SYSCALL_TRACE) ||
1833
-
test_thread_flag(TIF_SYSCALL_EMU)) {
1832
+
unsigned long flags = READ_ONCE(current_thread_info()->flags);
1833
+
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+
if (flags & (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE)) {
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tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER);
1835
-
if (!in_syscall(regs) || test_thread_flag(TIF_SYSCALL_EMU))
1836
+
if (!in_syscall(regs) || (flags & _TIF_SYSCALL_EMU))
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1837
return -1;
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}
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