On Wed, Jun 25, 2025 at 05:57:18PM +0200, Nam Cao wrote: > On Wed, Jun 25, 2025 at 05:33:54PM +0200, Sebastian Andrzej Siewior wrote: > > On 2025-06-25 17:27:02 [+0200], Nam Cao wrote: > > > To be sure, I tried your suggestion. Systemd sometimes failed to boot, and > > > my stress test crashed instantly. > > > > I had a trace_printk() there while testing and it never triggered. > > This code path is only executed for broken userspace. Forgot to mention, my test crashed because the __llist_add(n, &txlist) below doesn't care if 'n' is already in a list. By changing to from llist_del_first() to llist_del_first_init(), it is possible for 'n' to be in a list, therefore __llist_add() would break. Nam
