Hello Sumit Garg,
This is a semi-automatic email about new static checker warnings.
The patch 5946d1f5b309: "kdb: Switch to use safer dbg_io_ops over
console APIs" from Jun 4, 2020, leads to the following Smatch
complaint:
kernel/debug/kdb/kdb_io.c:565 kdb_msg_write()
error: we previously assumed 'dbg_io_ops' could be null (see line 552)
kernel/debug/kdb/kdb_io.c
551
552 if (dbg_io_ops) {
^^^^^^^^^^
Check for NULL
553 const char *cp = msg;
554 int len = msg_len;
555
556 while (len--) {
557 dbg_io_ops->write_char(*cp);
558 cp++;
559 }
560 }
561
562 for_each_console(c) {
563 if (!(c->flags & CON_ENABLED))
564 continue;
565 if (c == dbg_io_ops->cons)
^^^^^^^^^^
New unchecked dereference.
566 continue;
567 /*
regards,
dan carpenter
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