Hi, Sebastian I just add the RT patches, nothing else. Thanks Feng >-----Original Message----- >From: Sebastian Andrzej Siewior [mailto:sebastian.siewior@xxxxxxxxxxxxx] >Sent: Monday, June 26, 2017 10:55 PM >To: Steven Rostedt >Cc: Feng Feng24 Liu; Mike Galbraith; linux-kernel@xxxxxxxxxxxxxxx; >linux-rt-users@xxxxxxxxxxxxxxx; tmac@xxxxxx >Subject: Re: BUG: unable to handle kernel NULL pointer dereference at >0000000000000038 !//RE: kernel BUG at kernel/locking/rtmutex.c:1027 > >On 2017-06-26 10:24:18 [-0400], Steven Rostedt wrote: >> > CPU: 17 PID: 1738811 Comm: ip Not tainted 4.4.70-thinkcloud-nfv #1 >> > Hardware name: LENOVO System x3650 M5: -[8871AC1]-/01GR174, BIOS >> > -[TCE124M-2.10]- 06/23/2016 >> > task: ffff881cda2c27c0 ti: ffff881ea0538000 task.ti: >> > ffff881ea0538000 >> > RIP: 0010:[<ffffffff810a2cb4>] [<ffffffff810a2cb4>] >> > __try_to_take_rt_mutex+0x34/0x160 >> > RSP: 0018:ffff881ea053bb50 EFLAGS: 00010082 >> > RAX: 0000000000000000 RBX: ffff881f805416a8 RCX: 0000000000000000 >> > RDX: ffff881ea053bb98 RSI: ffff881cda2c27c0 RDI: ffff881f805416a8 >> > RBP: ffff881ea053bb60 R08: 0000000000000001 R09: 0000000000000002 >> > R10: 0000000000000a01 R11: 0000000000000001 R12: ffff881cda2c27c0 >> > R13: ffff881cda2c27c0 R14: 0000000000000202 R15: ffff881f6b0c27c0 >> > FS: 00007f28be315740(0000) GS:ffff88205f8c0000(0000) >> > knlGS:0000000000000000 >> > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> > CR2: 0000000000000038 CR3: 0000001e9e479000 CR4: 00000000003406e0 >> > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >> > Stack: >> > ffff881f805416a8 ffff881ea053bb98 ffff881ea053bc28 ffffffff81a8f03d >> > ffff881ea053c000 01ff881ea053bb90 ffff881cda2c27c0 ffff881f6b0c27c1 >> > ffff881cda2c2eb0 0000000000000001 0000000000000000 >> > 0000000000000000 Call Trace: >> > [<ffffffff81a8f03d>] rt_spin_lock_slowlock+0x13d/0x390 >> > [<ffffffff81a903bf>] rt_spin_lock+0x1f/0x30 >> > [<ffffffff8141757f>] lockref_get_not_dead+0xf/0x50 >> > [<ffffffff811e0a01>] ns_get_path+0x61/0x1d0 >> >> Hmm, this is in the filesystem code. What were you doing when this >> happened? > >and do you have any patches except the RT patch? > >> >> > <4>Jun 24 10:01:19 node-1 kernel: [44959.446268] >> > [<ffffffff8121eea9>] proc_ns_follow_link+0x89/0xa0 >> >> Do you know what proc file it was reading? >> >> -- Steve > >Sebastian ��.n��������+%������w��{.n�����{�����ǫ���ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
