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signal/arm: Push siginfo generation into arm_notify_die

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In arm_notify_die call force_sig_fault to let the generic
code handle siginfo generation.

This removes some boiler plate making the code easier to
maintain in the long run.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2018-04-16 13:25:24 -05:00
parent c852680959
commit 05e792e30e
4 changed files with 30 additions and 71 deletions
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16
arch/arm/kernel/swp_emulate.c
View file

@ -98,22 +98,20 @@ static int proc_status_show(struct seq_file *m, void *v)
*/
static void set_segfault(struct pt_regs *regs, unsigned long addr)
{
siginfo_t info;
int si_code;
clear_siginfo(&info);
down_read(&current->mm->mmap_sem);
if (find_vma(current->mm, addr) == NULL)
info.si_code = SEGV_MAPERR;
si_code = SEGV_MAPERR;
else
info.si_code = SEGV_ACCERR;
si_code = SEGV_ACCERR;
up_read(&current->mm->mmap_sem);
info.si_signo = SIGSEGV;
info.si_errno = 0;
info.si_addr = (void *) instruction_pointer(regs);
pr_debug("SWP{B} emulation: access caused memory abort!\n");
arm_notify_die("Illegal memory access", regs, &info, 0, 0);
arm_notify_die("Illegal memory access", regs,
SIGSEGV, si_code,
(void __user *)instruction_pointer(regs),
0, 0);
abtcounter++;
}