Hi Sebastian, Syzbot has noted the new fixing commit -- "mm/page_alloc: protect PCP lists with a spinlock", but it's not really happy with two commands in one email. Let's try it one more time in this separate email: #syz dup: BUG: sleeping function called from invalid context in relay_open_buf -- Best Regards, Aleksandr On Mon, Jun 20, 2022 at 12:19 PM Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote: > > #syz fix: mm/page_alloc: protect PCP lists with a spinlock > #syz dup: BUG: sleeping function called from invalid context in relay_open_buf > > The version of the patch above in next-20220614 is buggy leading to the > report below. The version in next-20220620 is fine. Not sure how to tell > syz bot this… > > On 2022-06-18 15:15:20 [-0700], syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 35d872b9ea5b Add linux-next specific files for 20220614 > > git tree: linux-next > > console output: https://syzkaller.appspot.com/x/log.txt?x=155b0d10080000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=d7bf2236c6bb2403 > > dashboard link: https://syzkaller.appspot.com/bug?extid=b577bc624afda52c78de > > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > > > Unfortunately, I don't have any reproducer for this issue yet. > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+b577bc624afda52c78de@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > BUG: sleeping function called from invalid context at mm/vmalloc.c:2980 > … > > Preemption disabled at: > > [<ffffffff81bc76f5>] rmqueue_pcplist mm/page_alloc.c:3813 [inline] > > [<ffffffff81bc76f5>] rmqueue mm/page_alloc.c:3858 [inline] > > [<ffffffff81bc76f5>] get_page_from_freelist+0x455/0x3a20 mm/page_alloc.c:4293 > > Sebastian > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/YrBJxrbq8Yvrpshj%40linutronix.de.
