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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-21 15:17:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-21 15:17:34 -0800 |
| commit | eb6d5bbea2fbfaade9e29bf5ce4abe3a8384678f (patch) | |
| tree | e77cab319e261dac7d074cdee8494b1464f1de7f /arch/m68k/kernel | |
| parent | bcf5470eb4a13e5670fefb21525b43ef385c6fc6 (diff) | |
| parent | 1e5b5df65af99013b4d31607ddb3ca5731dbe44d (diff) | |
Merge tag 'm68k-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- Add seccomp support
- defconfig updates
- Miscellaneous fixes and improvements
* tag 'm68k-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: /proc/hardware should depend on PROC_FS
selftests/seccomp: Add m68k support
m68k: Add kernel seccomp support
m68k: Check syscall_trace_enter() return code
m68k: defconfig: Update defconfigs for v6.2-rc3
m68k: q40: Do not initialise statics to 0
Diffstat (limited to 'arch/m68k/kernel')
| -rw-r--r-- | arch/m68k/kernel/entry.S | 6 | ||||
| -rw-r--r-- | arch/m68k/kernel/ptrace.c | 6 |
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index 18f278bdbd21..4dd2fd7acba9 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -184,9 +184,12 @@ do_trace_entry: jbsr syscall_trace_enter RESTORE_SWITCH_STACK addql #4,%sp + addql #1,%d0 | optimization for cmpil #-1,%d0 + jeq ret_from_syscall movel %sp@(PT_OFF_ORIG_D0),%d0 cmpl #NR_syscalls,%d0 jcs syscall + jra ret_from_syscall badsys: movel #-ENOSYS,%sp@(PT_OFF_D0) jra ret_from_syscall @@ -211,6 +214,9 @@ ENTRY(system_call) | syscall trace? tstb %a1@(TINFO_FLAGS+2) jmi do_trace_entry + | seccomp filter active? + btst #5,%a1@(TINFO_FLAGS+2) + bnes do_trace_entry cmpl #NR_syscalls,%d0 jcc badsys syscall: diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c index 0a4184a37461..cd0172d29430 100644 --- a/arch/m68k/kernel/ptrace.c +++ b/arch/m68k/kernel/ptrace.c @@ -21,7 +21,7 @@ #include <linux/signal.h> #include <linux/regset.h> #include <linux/elf.h> - +#include <linux/seccomp.h> #include <linux/uaccess.h> #include <asm/page.h> #include <asm/processor.h> @@ -278,6 +278,10 @@ asmlinkage int syscall_trace_enter(void) if (test_thread_flag(TIF_SYSCALL_TRACE)) ret = ptrace_report_syscall_entry(task_pt_regs(current)); + + if (secure_computing() == -1) + return -1; + return ret; } |