Re: 9.99.104: panic in tcp_shutdown_wrapper

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

Hi,

I've committed a possible fix.  Could you try it?

Thanks,
  ozaki-r

On Sun, Oct 30, 2022 at 12:17 AM Thomas Klausner <wiz%netbsd.org@localhost> wrote:
>
> Hi!
>
> A couple hours later, my shell was in an NFS mounted directory (probably idle for some time) and I tried tab-completing an entry, and it panicked again.
> Same location as below.
>
> Hand copied:
> tcp_shutdown_wrapper+0x20
> nfs_disconnect+0x69
> nfs_reconnect+0x1a
> nfs_request+0x7fb
> nfs_access+0x1ed
> VOP_ACCESS+0x61
> nfs_lookup+052f
> VOP_LOOKUP+0x8a
> lookup_once+0x1a6
> namei_tryemulroot+0xb00
> namei+0x29
> vn_open+0x133
> do_open+0xc3
> do_sys_openat+0x74
> sys_open+0x24
> syscall+0x196
>
>  Thomas
>
> > On 29.10.2022, at 11:53, Thomas Klausner <wiz%NetBSD.org@localhost> wrote:
> >
> > Hi!
> >
> > I’ve upgraded from 9.99.100 (stable) to 9.99.104 this morning (kernel + user land, but packages still the old ones built on 9.99.100 in case it matters).
> > A couple hours later I started transmission-gtk and the machine immediately panicked.
> >
> > Hand copied:
> >
> > uvm_fault(0xfffff8b04ab6d8f0, 0x0, 1) -> e
> > Fatal page fault in supervisor mode
> > Trap type 6 code 0 rip 0xffffffff80b06b82 cs 0x8 rflags 0x10246 cr2 0x38 ilevel 0 rsp 0xfffffc62191caaaf0
> > Curlwp 0xffffff8b08ac6d040 pid 6904.22757 lowest kstack 0xfffffc62191ca62c0
> > Kernel: page fault trap, code = 0
> > Stopped in pid 6904.22757 (transmission-gtk) at netbsd:tcp_shutdown_wrapper+0x20
> > : movq 38(%rax), %r14
> > tcp_shutdown_wrapper() at netbsd:tcp_shutdown_wrapper:0x20
> > nfs_disconnect() at netbsd:nfs_disconnect+0x69
> > nfs_reconnect() at netbsd:nfs_reconnect+0x1a
> > nfs_request() at netbsd:nfs_request+0x7fb
> > nfs_statvfs() at netbsd:nfs_statvfs+0x173
> > VFS_STATVFS() at netbsd:VFS_STATVFS+0x22
> > dostatvfs() at netbsd:dostatvfs+0x132
> > do_sys_getvfsstat() at netbsd:do_sys_getvfsstat+0x9f
> > sys___getvfsstat90() at netbsd:sys___getvfsstat90+0x2b
> > syscall() at netbsd:syscall+0x196
> >
> > I have nfs mounted some shares from a Synology station.
> >
> > Ideas? Perhaps the pcb merge changes from this week?
> > Thomas
>