On Thu, Aug 13, 2020 at 03:52:13AM -0400, Qian Cai wrote:
> > No sane application would ever do this, it's behaviour as expected,
> > so I don't think there's anything to care about here.
>
> It looks me the kernel warning is trivial to trigger by an non-root user.
> Shouldn???t we worry a bit
> On Aug 13, 2020, at 1:44 AM, Dave Chinner wrote:
>
> Ok:
>
> file.fd_write = safe_open("./testfile", O_RDWR|O_CREAT);
>
> file.fd_read = safe_open("./testfile", O_RDWR|O_CREAT|O_DIRECT);
>
> file.ptr = safe_mmap(NULL, fsize, PROT_READ|PROT_WRITE, MAP_SHARED,
>
On Mon, Aug 10, 2020 at 10:03:03PM -0400, Qian Cai wrote:
> On Sun, Jul 26, 2020 at 04:24:12PM +0100, Christoph Hellwig wrote:
> > On Fri, Jul 24, 2020 at 02:24:32PM -0400, Qian Cai wrote:
> > > On Fri, Jun 19, 2020 at 05:17:47PM -0700, Matthew Wilcox wrote:
> > > > On Fri, Jun 19, 2020 at
On Sun, Jul 26, 2020 at 04:24:12PM +0100, Christoph Hellwig wrote:
> On Fri, Jul 24, 2020 at 02:24:32PM -0400, Qian Cai wrote:
> > On Fri, Jun 19, 2020 at 05:17:47PM -0700, Matthew Wilcox wrote:
> > > On Fri, Jun 19, 2020 at 05:17:50PM -0400, Qian Cai wrote:
> > > > Running a syscall fuzzer by a
On Sun, Jul 26, 2020 at 04:24:12PM +0100, Christoph Hellwig wrote:
> On Fri, Jul 24, 2020 at 02:24:32PM -0400, Qian Cai wrote:
> > On Fri, Jun 19, 2020 at 05:17:47PM -0700, Matthew Wilcox wrote:
> > > On Fri, Jun 19, 2020 at 05:17:50PM -0400, Qian Cai wrote:
> > > > Running a syscall fuzzer by a
On Fri, Jul 24, 2020 at 02:24:32PM -0400, Qian Cai wrote:
> On Fri, Jun 19, 2020 at 05:17:47PM -0700, Matthew Wilcox wrote:
> > On Fri, Jun 19, 2020 at 05:17:50PM -0400, Qian Cai wrote:
> > > Running a syscall fuzzer by a normal user could trigger this,
> > >
> > > [55649.32][T515839]
On Fri, Jun 19, 2020 at 05:17:47PM -0700, Matthew Wilcox wrote:
> On Fri, Jun 19, 2020 at 05:17:50PM -0400, Qian Cai wrote:
> > Running a syscall fuzzer by a normal user could trigger this,
> >
> > [55649.32][T515839] WARNING: CPU: 6 PID: 515839 at
> > fs/iomap/direct-io.c:391
On Fri, Jun 19, 2020 at 05:17:47PM -0700, Matthew Wilcox wrote:
> On Fri, Jun 19, 2020 at 05:17:50PM -0400, Qian Cai wrote:
> > Running a syscall fuzzer by a normal user could trigger this,
> >
> > [55649.32][T515839] WARNING: CPU: 6 PID: 515839 at
> > fs/iomap/direct-io.c:391
On Fri, Jun 19, 2020 at 05:17:50PM -0400, Qian Cai wrote:
> Running a syscall fuzzer by a normal user could trigger this,
>
> [55649.32][T515839] WARNING: CPU: 6 PID: 515839 at
> fs/iomap/direct-io.c:391 iomap_dio_actor+0x29c/0x420
...
> 371 static loff_t
> 372 iomap_dio_actor(struct inode
Running a syscall fuzzer by a normal user could trigger this,
[55649.32][T515839] WARNING: CPU: 6 PID: 515839 at fs/iomap/direct-io.c:391
iomap_dio_actor+0x29c/0x420
[55649.339490][T515839] Modules linked in: vfio_pci vfio_virqfd
vfio_iommu_type1 vfio processor efivarfs ip_tables x_tables
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