On Thu, Jun 05, 2014 at 03:33:21PM +0800, Liu ShuoX wrote: > On Thu 5.Jun'14 at 9:19:19 +0200, Peter Zijlstra wrote: > >On Thu, Jun 05, 2014 at 10:36:10AM +0800, Liu ShuoX wrote: > >>From: Zhang Yanmin <yanmin.zh...@intel.com> > >> > >>We hit a kernel panic when running perf to collect some performance data. > >>kenel is x86_64 and user space apps are 32bit. > >> > >>[ 71.965351, 1] [ Binder_2] BUG: unable to handle kernel NULL > >>pointer dereference at 0000000000000004 > >>[ 71.965360, 1] [ Binder_2] IP: [<ffffffff82012091>] > >>get_segment_base+0x71/0xc0 > >>[ 71.965367, 1] [ Binder_2] PGD 6c65f067 PUD 0 > >>[ 71.965375, 1] [ Binder_2] Oops: 0000 [#1] PREEMPT SMP > >>[ 71.965413, 1] [ Binder_2] Modules linked in: ddrgx > >>snd_merr_dpcm_wm8958 snd_intel_sst snd_soc_sst_platform snd_soc_wm8994 > >>snd_soc_wm_hubs lm3559 imx1x5 atomisp_css2401a0_v21 libmsrlisthelper rmi4 > >>bcm_bt_lpm videobuf_vmalloc videobuf_core fps_throttle hdmi_audio pn544(O) > >>tngdisp bcm4335(O) cfg80211 > >>[ 71.965420, 1] [ Binder_2] CPU: 1 PID: 304 Comm: Binder_2 Tainted: > >>G W O 3.10.20-263902-g184bfbc-dirty #14 > >>[ 71.965426, 1] [ Binder_2] task: ffff8800764dc300 ti: > >>ffff88006c6e8000 task.ti: ffff88006c6e8000 > >>[ 71.965439, 1] [ Binder_2] RIP: 0010:[<ffffffff82012091>] > >>[<ffffff?f82012091>] get_segment_base+0x71/0xc0 > > > > ^ > >>[ 71.965<44, 1] [ Binder_2] RSP: 0018:ffff^X8007ea87b98 EFLAGS: > >>00010092 > > ^ ^ > >>[ 71.965447, 1] [ !Binder_2] RAX: 0000000000000024 RBX: > >>0000000000000000 RCX: 0000000000000000 > > ^ > >>[ 71.965450, 1] [ Binder_2] RDX: 0000000000000000 RSI: > >>0000000000000000 RDI: 0000000000000009 > >>[ 71.965454, 1] [ Binder_2] RBP: ffff88007ea87ba8 R08: > >>ffffffff83143b3c R09: ffffffff831848a8 > >>[ 71.965458, 1] [ Binder_2] R10: 0000000000000000 R11: > >>00000000001bf2d8 R12: 0000000000000000 > >>[ 71.965462, 1] [ Binder_2] R13: ffff88006c6e9fd8 R14: > >>ffff88006c6e9f58 R15: ffff8800764dc300 > >>[ 71.965468, 1_ [ Binder_2] FS: 0000000000000000(0000) > >>GS:ffff88007ea80000(006b) knlGS:00000000f704add0 > > ^ > > > >Are you suffering some serious corruption? > The log captured by pstore after rebooting, so there are some > corruption. Please ignore those.
Why does pstore cause corruption? I thought that stuff was supposed to be 'good' ?
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