Re: [syzbot] [mm?] WARNING in set_mm_walk
Shakeel Butt <[email protected]>
| Newsgroups | org.kvack.linux-mm,org.kernel.vger.cgroups,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Wed, Aug 12, 2026 at 02:03:58PM -0700, Andrew Morton wrote: > On Wed, 12 Aug 2026 05:26:24 -0700 syzbot <[email protected]> wrote: > > > syzbot has found a reproducer for the following issue on: > > > > HEAD commit: f5bbbfec59b4 Merge tag 'probes-fixes-v7.2-rc7' of git://gi.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=11f44c79580000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=c44651ea7dd2f307 > > dashboard link: https://syzkaller.appspot.com/bug?extid=12ee2725d5fde63a9c96 > > compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10d11149580000 > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: [email protected] > > > > ------------[ cut here ]------------ > > current_is_kswapd() > > WARNING: mm/vmscan.c:3800 at set_mm_walk+0x210/0x270 mm/vmscan.c:3800, CPU#2: kswapd0/111 > > Thanks. Shakeel is working on a series which will fix this by removing > the calling code. But it isn't a minor patch. > > Shakeel, it would be good to have a backportable quick-fix to make this > warning go away? > Actually the first patch [1] of the series will fix this warning and we can backport just that patch to the older stable kernels. Do you want me to send that patch as a standalone? [1] https://lore.kernel.org/all/[email protected]/