On Wed, Jul 27, 2016 at 04:45:35PM +0530, Abdul Haleem wrote: > Hi, > > Kernel OOPS messages were seen while compiling linux test project (LTP) > source on 4.7.0-rc5 mainline. > > Kernel config : pseries_le_defconfig > Machine Type : PowerVM LPAR > Machine hardware : LPAR uses 16 vCPUs, and 29G memory > > trace messages: > *15:34:57* [ 862.548866] Unable to handle kernel paging request for data at > address 0x00000000 > *15:34:57* [ 862.548904] Faulting instruction address: 0xc000000000260900 > *15:34:57* [ 862.548911] Oops: Kernel access of bad area, sig: 11 [#1] > *15:34:57* [ 862.548917] SMP NR_CPUS=2048 NUMA pSeries > *15:34:57* [ 862.548924] Modules linked in: rtc_generic(E) pseries_rng(E) > autofs4(E) > *15:34:57* [ 862.548938] CPU: 0 PID: 129 Comm: kswapd2 Tainted: G > E 4.7.0-rc5-autotest #1 > *15:34:57* [ 862.548946] task: c0000007766a2600 ti: c000000776764000 > task.ti: c000000776764000 > *15:34:57* [ 862.548953] NIP: c000000000260900 LR: c00000000026452c CTR: > 0000000000000000 > *15:34:57* [ 862.548961] REGS: c000000776767830 TRAP: 0300 Tainted: G > E (4.7.0-rc5-autotest) > *15:34:57* [ 862.548968] MSR: 800000010280b033 > <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]> CR: 24000222 XER: 20000001 > *15:34:57* [ 862.548996] CFAR: c000000000008468 DAR: 0000000000000000 DSISR: > 40000000 SOFTE: 0 > *15:34:57* GPR00: c00000000026452c c000000776767ab0 c0000000013ac100 > c00000077ff54200 > *15:34:57* GPR04: 0000000000000000 c000000776767ba0 0000000000000001 > c00000000151c100 > *15:34:57* GPR08: 0000000000000000 00000000000b4057 0000000080000000 > c00000071664b7a0 > *15:34:57* GPR12: 0000000000000000 c00000000e800000 0000000000000001 > f0000000015dc000 > *15:34:57* GPR16: c00000077ff54700 0000000000000000 0000000000000000 > c00000077ff54700 > *15:34:57* GPR20: 0000000000000001 0000000000000100 0000000000000200 > c00000077ff54200 > *15:34:57* GPR24: c000000776767ba0 0000000000000020 0000000000000000 > 0000000000000001 > *15:34:57* GPR28: 0000000000000010 0000000000000000 c000000776767ba0 > f0000000015dc020 > *15:34:57* [ 862.549094] NIP [c000000000260900] > move_active_pages_to_lru.isra.16+0xa0/0x380 > *15:34:57* [ 862.549102] LR [c00000000026452c] shrink_active_list+0x2fc/0x510 > *15:34:57* [ 862.549108] Call Trace: > *15:34:57* [ 862.549112] [c000000776767ab0] [f0000000015dc000] > 0xf0000000015dc000 (unreliable) > *15:34:57* [ 862.549122] [c000000776767b60] [c00000000026452c] > shrink_active_list+0x2fc/0x510 > *15:34:57* [ 862.549131] [c000000776767c50] [c0000000002665d4] > kswapd+0x434/0xa70 > *15:34:57* [ 862.549139] [c000000776767d80] [c0000000000f1b50] > kthread+0x110/0x130 > *15:34:57* [ 862.549148] [c000000776767e30] [c0000000000095f0] > ret_from_kernel_thread+0x5c/0x6c > *15:34:57* [ 862.549155] Instruction dump: > *15:34:57* [ 862.549161] 60000000 3b200020 3a800001 7b7c26e4 3aa00100 > 3ac00200 3a400000 3a770500 > *15:34:57* [ 862.549174] 3a200000 60000000 60000000 60420000 <e93d0000> > 7fbd4840 419e01b8 ebfd0008 > *15:34:57* [ 862.549193] ---[ end trace fcc50906d9164c56 ]--- > *15:34:57* [ 862.550562] > *15:35:18* [ 883.551577] INFO: rcu_sched self-detected stall on CPU > *15:35:18* [ 883.551578] INFO: rcu_sched self-detected stall on CPU > *15:35:18* [ 883.551588] 2-...: (5249 ticks this GP) > idle=cc5/140000000000001/0 softirq=50260/50260 fqs=5249 > *15:35:18* [ 883.551591] (t=5250 jiffies g=48365 c=48364 q=182) >
Is the problem repeatable? Comm says kswapd2, could you post the topology? > Regard's > Abdul > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
