Re: memory leak in create_ctx

2019-06-30 Thread syzbot
Hello, syzbot has tested the proposed patch but the reproducer still triggered crash: memory leak in create_ctx 2019/07/01 05:38:26 executed programs: 23 BUG: memory leak unreferenced object 0x888102914e00 (size 512): comm "syz-executor.4", pid 7333, jiffies 4294944085 (age 13.950s) h

RE: memory leak in create_ctx

2019-06-30 Thread John Fastabend
syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:79c3ba32 Merge tag 'drm-fixes-2019-06-07-1' of git://anong.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=170e0bfea0 > kernel config: https://syzkaller.appspot.com/x/

Re: memory leak in create_ctx

2019-06-13 Thread John Fastabend
Hillf Danton wrote: > > Hi Dmitry > > On Tue, 11 Jun 2019 19:45:28 +0800 Dmitry Vyukov wrote: > > > > I've run the repro as "./syz-execprog -repeat=0 -procs=6 repro" and > > in 10 mins I got the following splat, which indeed suggests a bpf bug. > > But we of course can have both bpf stack overfl

Re: memory leak in create_ctx

2019-06-11 Thread Jakub Kicinski
On Tue, 11 Jun 2019 13:45:11 +0200, Dmitry Vyukov wrote: > Do you see the bug? Jakub said he can't repro. > The repro has these suspicious bpf syscalls and there is currently > some nasty bpf bug that plagues us and leads to random assorted > splats. Ah, must be the BPF interaction indeed :S The r

Re: memory leak in create_ctx

2019-06-11 Thread Dmitry Vyukov
,On Sun, Jun 9, 2019 at 4:56 AM Hillf Danton wrote: > > > Hi > > On Sat, 08 Jun 2019 12:13:06 -0700 (PDT) syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit:79c3ba32 Merge tag 'drm-fixes-2019-06-07-1' of git://anong.. > > git tree: upstream > > cons

[net/tls] Re: memory leak in create_ctx

2019-06-10 Thread Eric Biggers
Looks like a TLS bug. icsk->icsk_ulp_data isn't always freed. On Sat, Jun 08, 2019 at 12:13:06PM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:79c3ba32 Merge tag 'drm-fixes-2019-06-07-1' of git://anong.. > git tree: upstream > console output: h

Re: memory leak in create_ctx

2019-06-08 Thread Jakub Kicinski
On Sat, 08 Jun 2019 12:13:06 -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:79c3ba32 Merge tag 'drm-fixes-2019-06-07-1' of git://anong.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=170e0bfea0 > kernel confi