Re: kernel BUG at lib/string.c:LINE! (6)

2020-12-23 Thread Dmitry Vyukov
On Tue, Dec 22, 2020 at 11:07 PM Florian Westphal wrote: > > Linus Torvalds wrote: > > On Tue, Dec 22, 2020 at 6:44 AM syzbot > > wrote: > > > > > > The issue was bisected to: > > > > > > commit 2f78788b55ba ("ilog2: improve ilog2 for constant arguments") > > > > That looks unlikely, although po

Re: kernel BUG at lib/string.c:LINE! (6)

2020-12-22 Thread Florian Westphal
Linus Torvalds wrote: > On Tue, Dec 22, 2020 at 6:44 AM syzbot > wrote: > > > > The issue was bisected to: > > > > commit 2f78788b55ba ("ilog2: improve ilog2 for constant arguments") > > That looks unlikely, although possibly some constant folding > improvement might make the fortify code notice

Re: kernel BUG at lib/string.c:LINE! (6)

2020-12-22 Thread Linus Torvalds
On Tue, Dec 22, 2020 at 6:44 AM syzbot wrote: > > The issue was bisected to: > > commit 2f78788b55ba ("ilog2: improve ilog2 for constant arguments") That looks unlikely, although possibly some constant folding improvement might make the fortify code notice something with it. > detected buffer ov