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s390/test_unwind: unify error handling paths

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Handle the case of "unwind state reliable but addr is 0" like other error
cases in this function and trigger output of failing stacktrace to aid
debugging.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2021-04-09 00:21:14 +02:00 committed by Heiko Carstens
parent 4dd4269ea5
commit f169f42130
1 changed files with 2 additions and 2 deletions
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4
arch/s390/lib/test_unwind.c
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@ -64,8 +64,8 @@ static noinline int test_unwind(struct task_struct *task, struct pt_regs *regs,
break;
if (state.reliable && !addr) {
pr_err("unwind state reliable but addr is 0\n");
kfree(bt);
return -EINVAL;
ret = -EINVAL;
break;
}
sprint_symbol(sym, addr);
if (bt_pos < BT_BUF_SIZE) {