On Thu, Sep 08, 2022 at 11:25:08PM +0200, Vlastimil Babka (SUSE) wrote: > > I tend to agree with you. A mount operation shouldn’t panic the > > kernel. > > Hmm kmalloc(64) shouldn't normally due that due to the the underlying page > allocation falling into the "too small to fail" category, wonder if > syzkaller was doing anything special here? Here's the repro: https://syzkaller.appspot.com/x/repro.c?x=17cd7fa3080000 you can see it does: fd = open("/proc/thread-self/fail-nth", O_RDWR); if (fd == -1) exit(1); char buf[16]; sprintf(buf, "%d", nth); if (write(fd, buf, strlen(buf)) != (ssize_t)strlen(buf)) so this is the kind of stupid nitpicky bug that we shouldn't be reporting, let alone fixing, IMO.
