On Mon, Feb 03, 2025 at 07:05:32PM +0800, Edward Adam Davis wrote:
> On Mon, 3 Feb 2025 09:14:51 +0100, Greg KH wrote:
> > On Mon, Feb 03, 2025 at 11:27:56AM +0800, Edward Adam Davis wrote:
> > > syzbot reported a uninit-value in full_proxy_unlocked_ioctl. [1]
> > >
> > > The newly created fsd does not initialize methods, and increases the
> > > initialization of methods for fsd.
> > >
> > > [1]
> > > BUG: KMSAN: uninit-value in full_proxy_unlocked_ioctl+0xed/0x3a0 fs/debugfs/file.c:399
> > > full_proxy_unlocked_ioctl+0xed/0x3a0 fs/debugfs/file.c:399
> > > vfs_ioctl fs/ioctl.c:51 [inline]
> > > __do_sys_ioctl fs/ioctl.c:906 [inline]
> > > __se_sys_ioctl+0x246/0x440 fs/ioctl.c:892
> > > __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:892
> > > x64_sys_call+0x19f0/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:17
> > > do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> > > do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
> > > entry_SYSCALL_64_after_hwframe+0x77/0x7f
> > >
> > > Fixes: 41a0ecc0997c ("debugfs: get rid of dynamically allocation proxy_ops")
> > > Reported-by: syzbot+8928e473a91452caca2f@xxxxxxxxxxxxxxxxxxxxxxxxx
> > > Closes: https://syzkaller.appspot.com/bug?extid=8928e473a91452caca2f
> > > Tested-by: syzbot+8928e473a91452caca2f@xxxxxxxxxxxxxxxxxxxxxxxxx
> > > Signed-off-by: Edward Adam Davis <eadavis@xxxxxx>
> > > ---
> > > fs/debugfs/file.c | 1 +
> > > 1 file changed, 1 insertion(+)
> >
> > Is this still an issue on 6.14-rc1, specifically after commit
> > 57b314752ec0 ("debugfs: Fix the missing initializations in
> > __debugfs_file_get()")?
> No.
Great, I'll forget about it then :)
thanks!
greg k-h
