Hi Al,
On Mon, 14 May 2018 05:04:15 +0100 Al Viro wrote:
>
> On Mon, May 14, 2018 at 12:20:16PM +0900, Tetsuo Handa wrote:
>
> > But there remains a refcount bug because deactivate_locked_super() from
> > kernfs_mount_ns() triggers kobj_ns_drop() from sysfs_kill_sb()
Hi Al,
On Mon, 14 May 2018 05:04:15 +0100 Al Viro wrote:
>
> On Mon, May 14, 2018 at 12:20:16PM +0900, Tetsuo Handa wrote:
>
> > But there remains a refcount bug because deactivate_locked_super() from
> > kernfs_mount_ns() triggers kobj_ns_drop() from sysfs_kill_sb() via
> > sb->kill_sb() when
On Mon, May 14, 2018 at 05:04:15AM +0100, Al Viro wrote:
> diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
> index b428d317ae92..92682fcc41f6 100644
> --- a/fs/sysfs/mount.c
> +++ b/fs/sysfs/mount.c
> @@ -25,7 +25,7 @@ static struct dentry *sysfs_mount(struct file_system_type
> *fs_type,
> {
>
On Mon, May 14, 2018 at 05:04:15AM +0100, Al Viro wrote:
> diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
> index b428d317ae92..92682fcc41f6 100644
> --- a/fs/sysfs/mount.c
> +++ b/fs/sysfs/mount.c
> @@ -25,7 +25,7 @@ static struct dentry *sysfs_mount(struct file_system_type
> *fs_type,
> {
>
On Mon, May 14, 2018 at 12:20:16PM +0900, Tetsuo Handa wrote:
> But there remains a refcount bug because deactivate_locked_super() from
> kernfs_mount_ns() triggers kobj_ns_drop() from sysfs_kill_sb() via
> sb->kill_sb() when kobj_ns_drop() is always called by sysfs_mount()
> if kernfs_mount_ns()
On Mon, May 14, 2018 at 12:20:16PM +0900, Tetsuo Handa wrote:
> But there remains a refcount bug because deactivate_locked_super() from
> kernfs_mount_ns() triggers kobj_ns_drop() from sysfs_kill_sb() via
> sb->kill_sb() when kobj_ns_drop() is always called by sysfs_mount()
> if kernfs_mount_ns()
On Sun, May 13, 2018 at 11:19:46AM +0900, Tetsuo Handa wrote:
> This is what I reported at
> https://groups.google.com/d/msg/syzkaller-bugs/ISOJlV2I2QM/qHslGMi3AwAJ .
>
> We are currently waiting for comments from Al Viro.
1) the damn thing is unusable without javashit. Which gets about
the
On Sun, May 13, 2018 at 11:19:46AM +0900, Tetsuo Handa wrote:
> This is what I reported at
> https://groups.google.com/d/msg/syzkaller-bugs/ISOJlV2I2QM/qHslGMi3AwAJ .
>
> We are currently waiting for comments from Al Viro.
1) the damn thing is unusable without javashit. Which gets about
the
On 2018/05/13 2:01, syzbot wrote:
> Call Trace:
> __list_del_entry include/linux/list.h:117 [inline]
> list_del include/linux/list.h:125 [inline]
> kernfs_kill_sb+0xa0/0x350 fs/kernfs/mount.c:361
> sysfs_kill_sb+0x22/0x40 fs/sysfs/mount.c:50
> deactivate_locked_super+0x97/0x100 fs/super.c:316
On 2018/05/13 2:01, syzbot wrote:
> Call Trace:
> __list_del_entry include/linux/list.h:117 [inline]
> list_del include/linux/list.h:125 [inline]
> kernfs_kill_sb+0xa0/0x350 fs/kernfs/mount.c:361
> sysfs_kill_sb+0x22/0x40 fs/sysfs/mount.c:50
> deactivate_locked_super+0x97/0x100 fs/super.c:316
Hello,
syzbot found the following crash on:
HEAD commit:f0ab773f5c96 Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=140ce81780
kernel config: https://syzkaller.appspot.com/x/.config?x=fcce42b221691ff9
Hello,
syzbot found the following crash on:
HEAD commit:f0ab773f5c96 Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=140ce81780
kernel config: https://syzkaller.appspot.com/x/.config?x=fcce42b221691ff9
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