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[elf-fdpic] move allocation of elf_thread_status into elf_dump_thread_status()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2020-06-15 10:41:08 -04:00
parent 5074c7f69f
commit 38a62779ae
1 changed files with 10 additions and 14 deletions
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24
fs/binfmt_elf_fdpic.c
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@@ -1466,12 +1466,13 @@ struct elf_thread_status
* we need to keep a linked list of every thread's pr_status and then create * we need to keep a linked list of every thread's pr_status and then create
* a single section for them in the final core file. * a single section for them in the final core file.
*/ */
static int elf_dump_thread_status(long signr, struct elf_thread_status *t) static struct elf_thread_status *elf_dump_thread_status(long signr, struct task_struct *p, int *sz)
{ {
struct task_struct *p = t->thread; struct elf_thread_status *t;
int sz = 0;
t->num_notes = 0; t = kzalloc(sizeof(struct elf_thread_status), GFP_KERNEL);
if (!t)
return t;
fill_prstatus(&t->prstatus, p, signr); fill_prstatus(&t->prstatus, p, signr);
elf_core_copy_task_regs(p, &t->prstatus.pr_reg); elf_core_copy_task_regs(p, &t->prstatus.pr_reg);
@@ -1479,16 +1480,16 @@ static int elf_dump_thread_status(long signr, struct elf_thread_status *t)
fill_note(&t->notes[0], "CORE", NT_PRSTATUS, sizeof(t->prstatus), fill_note(&t->notes[0], "CORE", NT_PRSTATUS, sizeof(t->prstatus),
&t->prstatus); &t->prstatus);
t->num_notes++; t->num_notes++;
sz += notesize(&t->notes[0]); *sz += notesize(&t->notes[0]);
t->prstatus.pr_fpvalid = elf_core_copy_task_fpregs(p, NULL, &t->fpu); t->prstatus.pr_fpvalid = elf_core_copy_task_fpregs(p, NULL, &t->fpu);
if (t->prstatus.pr_fpvalid) { if (t->prstatus.pr_fpvalid) {
fill_note(&t->notes[1], "CORE", NT_PRFPREG, sizeof(t->fpu), fill_note(&t->notes[1], "CORE", NT_PRFPREG, sizeof(t->fpu),
&t->fpu); &t->fpu);
t->num_notes++; t->num_notes++;
sz += notesize(&t->notes[1]); *sz += notesize(&t->notes[1]);
} }
return sz; return t;
} }
static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum, static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum,
@@ -1621,20 +1622,15 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
for (ct = current->mm->core_state->dumper.next; for (ct = current->mm->core_state->dumper.next;
ct; ct = ct->next) { ct; ct = ct->next) {
tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); tmp = elf_dump_thread_status(cprm->siginfo->si_signo,
ct->task, &thread_status_size);
if (!tmp) if (!tmp)
goto end_coredump; goto end_coredump;
tmp->thread = ct->task;
tmp->next = thread_list; tmp->next = thread_list;
thread_list = tmp; thread_list = tmp;
} }
for (tmp = thread_list; tmp; tmp = tmp->next) {
int sz = elf_dump_thread_status(cprm->siginfo->si_signo, tmp);
thread_status_size += sz;
}
/* now collect the dump for the current */ /* now collect the dump for the current */
fill_prstatus(prstatus, current, cprm->siginfo->si_signo); fill_prstatus(prstatus, current, cprm->siginfo->si_signo);
elf_core_copy_regs(&prstatus->pr_reg, cprm->regs); elf_core_copy_regs(&prstatus->pr_reg, cprm->regs);