On Mon, Jul 13, 2020 at 9:38 PM Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx> wrote: > > On Mon, Jul 13, 2020 at 6:29 PM Peilin Ye <yepeilin.cs@xxxxxxxxx> wrote: > > > > Prevent __btf_resolve_helper_id() from dereferencing `btf_vmlinux` > > as NULL. This patch fixes the following syzbot bug: > > > > https://syzkaller.appspot.com/bug?id=5edd146856fd513747c1992442732e5a0e9ba355 The link looks wrong? Nothing in the stack trace indicates this issue. > > Reported-by: syzbot+ee09bda7017345f1fbe6@xxxxxxxxxxxxxxxxxxxxxxxxx > > Signed-off-by: Peilin Ye <yepeilin.cs@xxxxxxxxx> > > --- > > Thank you for reviewing my patch! I am new to Linux kernel development; would > > the log message and errno be appropriate for this case? > > I think it's good enough, thanks for the fix. > > Acked-by: Andrii Nakryiko <andriin@xxxxxx> > > > > > Change in v2: > > - Split NULL and IS_ERR cases. > > > > kernel/bpf/btf.c | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > [...]
