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Date: Tue, 8 Jan 2013 04:46:32 -0500 (EST)
From: CAI Qian <caiqian@...hat.com>
To: linux-mm <linux-mm@...ck.org>
Cc: linux-kernel <linux-kernel@...r.kernel.org>
Subject: mmap regression on power7?
Noticed that this test is failing at the moment up to v3.8.0-rc1,
http://ltp.git.sourceforge.net/git/gitweb.cgi?p=ltp/ltp.git;a=blob;f=testcases/kernel/mem/mtest06/mmap1.c
mmap1 0 TINFO : created writing thread[70366791266816]
mmap1 0 TINFO : [70366791266816] - map, change contents, unmap files 1000 times
mmap1 0 TINFO : [70366799655424] - read contents of memory 0x3fff8b180000 1000 times
mmap1 0 TINFO : created reading thread[70366799655424]
mmap1 0 TINFO : [70366799655424] Unexpected page fault at 0x3fff8b1803a8
Bisecting going back to v2.6.38 has no such problem and keep running
despite sometimes it triggered memory allocation failures.
swapper: page allocation failure. order:0, mode:0x0
Call Trace:
[c00000013feab370] [c0000000000143f4] .show_stack+0x74/0x1c0 (unreliable)
[c00000013feab420] [c0000000001474d0] .__alloc_pages_nodemask+0x4f0/0x8e0
[c00000013feab5c0] [c000000000031870] .iommu_alloc_coherent+0x100/0x280
[c00000013feab680] [c000000000031020] .dma_iommu_alloc_coherent+0x30/0x50
[c00000013feab6f0] [d000000001712220] .ibmvscsi_queuecommand+0x5b0/0x600 [ibmvscsic]
[c00000013feab7d0] [c0000000003aa0d0] .scsi_dispatch_cmd+0x120/0x380
[c00000013feab870] [c0000000003b2a8c] .scsi_request_fn+0x4fc/0x620
[c00000013feab950] [c0000000002a13ac] .__blk_run_queue+0x15c/0x1c0
[c00000013feab9e0] [c0000000002a1514] .blk_run_queue+0x34/0x60
[c00000013feaba70] [c0000000003b1894] .scsi_run_queue+0x114/0x450
[c00000013feabb50] [c0000000003b2de8] .scsi_next_command+0x48/0x70
[c00000013feabbe0] [c0000000003b3e60] .scsi_io_completion+0x3e0/0x580
[c00000013feabcc0] [c0000000003a9d98] .scsi_finish_command+0x128/0x180
[c00000013feabd60] [c0000000003b4118] .scsi_softirq_done+0x108/0x1d0
[c00000013feabe00] [c0000000002a795c] .blk_done_softirq+0xbc/0xf0
[c00000013feabea0] [c000000000092e90] .__do_softirq+0x110/0x290
[c00000013feabf90] [c000000000020eb8] .call_do_softirq+0x14/0x24
[c00000013e963960] [c00000000000f2b4] .do_softirq+0xf4/0x120
[c00000013e963a00] [c000000000092ca4] .irq_exit+0xb4/0xc0
[c00000013e963a80] [c00000000000f540] .do_IRQ+0x160/0x2c0
[c00000013e963b40] [c000000000004898] hardware_interrupt_entry+0x18/0x80
--- Exception: 501 at .arch_local_irq_restore+0x34/0x60
LR = .cpu_idle+0x170/0x210
[c00000013e963e30] [c000000000016c14] .cpu_idle+0x164/0x210 (unreliable)
[c00000013e963ee0] [c00000000059e454] .start_secondary+0x324/0x35c
[c00000013e963f90] [c000000000008268] .start_secondary_prolog+0x10/0x14
Mem-Info:
Node 0 DMA per-cpu:
CPU 0: hi: 6, btch: 1 usd: 5
CPU 1: hi: 6, btch: 1 usd: 1
CPU 2: hi: 6, btch: 1 usd: 5
CPU 3: hi: 6, btch: 1 usd: 5
CPU 4: hi: 6, btch: 1 usd: 3
CPU 5: hi: 6, btch: 1 usd: 1
CPU 6: hi: 6, btch: 1 usd: 5
CPU 7: hi: 6, btch: 1 usd: 4
CPU 8: hi: 6, btch: 1 usd: 1
CPU 9: hi: 6, btch: 1 usd: 5
CPU 10: hi: 6, btch: 1 usd: 5
CPU 11: hi: 6, btch: 1 usd: 5
CPU 12: hi: 6, btch: 1 usd: 4
CPU 13: hi: 6, btch: 1 usd: 1
CPU 14: hi: 6, btch: 1 usd: 5
CPU 15: hi: 6, btch: 1 usd: 3
CPU 16: hi: 6, btch: 1 usd: 5
CPU 17: hi: 6, btch: 1 usd: 1
CPU 18: hi: 6, btch: 1 usd: 5
CPU 19: hi: 6, btch: 1 usd: 2
CPU 20: hi: 6, btch: 1 usd: 4
CPU 21: hi: 6, btch: 1 usd: 1
CPU 22: hi: 6, btch: 1 usd: 5
CPU 23: hi: 6, btch: 1 usd: 1
CPU 24: hi: 6, btch: 1 usd: 5
CPU 25: hi: 6, btch: 1 usd: 1
CPU 26: hi: 6, btch: 1 usd: 5
CPU 27: hi: 6, btch: 1 usd: 5
CPU 28: hi: 6, btch: 1 usd: 5
CPU 29: hi: 6, btch: 1 usd: 1
CPU 30: hi: 6, btch: 1 usd: 1
CPU 31: hi: 6, btch: 1 usd: 1
CPU 32: hi: 6, btch: 1 usd: 5
CPU 33: hi: 6, btch: 1 usd: 5
CPU 34: hi: 6, btch: 1 usd: 1
CPU 35: hi: 6, btch: 1 usd: 1
CPU 36: hi: 6, btch: 1 usd: 5
CPU 37: hi: 6, btch: 1 usd: 5
CPU 38: hi: 6, btch: 1 usd: 4
CPU 39: hi: 6, btch: 1 usd: 2
CPU 40: hi: 6, btch: 1 usd: 4
CPU 41: hi: 6, btch: 1 usd: 5
CPU 42: hi: 6, btch: 1 usd: 5
CPU 43: hi: 6, btch: 1 usd: 2
CPU 44: hi: 6, btch: 1 usd: 5
CPU 45: hi: 6, btch: 1 usd: 5
CPU 46: hi: 6, btch: 1 usd: 5
CPU 47: hi: 6, btch: 1 usd: 5
CPU 48: hi: 6, btch: 1 usd: 1
CPU 49: hi: 6, btch: 1 usd: 1
CPU 50: hi: 6, btch: 1 usd: 3
CPU 51: hi: 6, btch: 1 usd: 5
CPU 52: hi: 6, btch: 1 usd: 5
CPU 53: hi: 6, btch: 1 usd: 2
CPU 54: hi: 6, btch: 1 usd: 5
CPU 55: hi: 6, btch: 1 usd: 5
CPU 56: hi: 6, btch: 1 usd: 1
CPU 57: hi: 6, btch: 1 usd: 1
CPU 58: hi: 6, btch: 1 usd: 5
CPU 59: hi: 6, btch: 1 usd: 4
Node 1 DMA per-cpu:
CPU 0: hi: 6, btch: 1 usd: 5
CPU 1: hi: 6, btch: 1 usd: 5
CPU 2: hi: 6, btch: 1 usd: 5
CPU 3: hi: 6, btch: 1 usd: 4
CPU 4: hi: 6, btch: 1 usd: 5
CPU 5: hi: 6, btch: 1 usd: 3
CPU 6: hi: 6, btch: 1 usd: 5
CPU 7: hi: 6, btch: 1 usd: 5
CPU 8: hi: 6, btch: 1 usd: 5
CPU 9: hi: 6, btch: 1 usd: 2
CPU 10: hi: 6, btch: 1 usd: 5
CPU 11: hi: 6, btch: 1 usd: 3
CPU 12: hi: 6, btch: 1 usd: 5
CPU 13: hi: 6, btch: 1 usd: 2
CPU 14: hi: 6, btch: 1 usd: 5
CPU 15: hi: 6, btch: 1 usd: 4
CPU 16: hi: 6, btch: 1 usd: 5
CPU 17: hi: 6, btch: 1 usd: 5
CPU 18: hi: 6, btch: 1 usd: 5
CPU 19: hi: 6, btch: 1 usd: 5
CPU 20: hi: 6, btch: 1 usd: 5
CPU 21: hi: 6, btch: 1 usd: 5
CPU 22: hi: 6, btch: 1 usd: 5
CPU 23: hi: 6, btch: 1 usd: 4
CPU 24: hi: 6, btch: 1 usd: 5
CPU 25: hi: 6, btch: 1 usd: 4
CPU 26: hi: 6, btch: 1 usd: 5
CPU 27: hi: 6, btch: 1 usd: 5
CPU 28: hi: 6, btch: 1 usd: 5
CPU 29: hi: 6, btch: 1 usd: 1
CPU 30: hi: 6, btch: 1 usd: 5
CPU 31: hi: 6, btch: 1 usd: 5
CPU 32: hi: 6, btch: 1 usd: 5
CPU 33: hi: 6, btch: 1 usd: 5
CPU 34: hi: 6, btch: 1 usd: 2
CPU 35: hi: 6, btch: 1 usd: 5
CPU 36: hi: 6, btch: 1 usd: 5
CPU 37: hi: 6, btch: 1 usd: 5
CPU 38: hi: 6, btch: 1 usd: 1
CPU 39: hi: 6, btch: 1 usd: 4
CPU 40: hi: 6, btch: 1 usd: 0
CPU 41: hi: 6, btch: 1 usd: 4
CPU 42: hi: 6, btch: 1 usd: 5
CPU 43: hi: 6, btch: 1 usd: 5
CPU 44: hi: 6, btch: 1 usd: 5
CPU 45: hi: 6, btch: 1 usd: 5
CPU 46: hi: 6, btch: 1 usd: 5
CPU 47: hi: 6, btch: 1 usd: 4
CPU 48: hi: 6, btch: 1 usd: 5
CPU 49: hi: 6, btch: 1 usd: 3
CPU 50: hi: 6, btch: 1 usd: 5
CPU 51: hi: 6, btch: 1 usd: 5
CPU 52: hi: 6, btch: 1 usd: 5
CPU 53: hi: 6, btch: 1 usd: 2
CPU 54: hi: 6, btch: 1 usd: 2
CPU 55: hi: 6, btch: 1 usd: 2
CPU 56: hi: 6, btch: 1 usd: 5
CPU 57: hi: 6, btch: 1 usd: 1
CPU 58: hi: 6, btch: 1 usd: 5
CPU 59: hi: 6, btch: 1 usd: 5
active_anon:2553 inactive_anon:3246 isolated_anon:0
active_file:34958 inactive_file:31322 isolated_file:0
unevictable:0 dirty:13086 writeback:1581 unstable:0
free:291 slab_reclaimable:2076 slab_unreclaimable:3873
mapped:186 shmem:3 pagetables:796 bounce:0
Node 0 DMA free:10176kB min:7296kB low:9088kB high:10944kB active_anon:96128kB inactive_anon:138368kB active_file:1837440kB inactive_file:1605056kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4190720kB mlocked:0kB dirty:459840kB writeback:62848kB mapped:11840kB shmem:192kB slab_reclaimable:127360kB slab_unreclaimable:226688kB kernel_stack:9088kB pagetables:35520kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Node 1 DMA free:8448kB min:1792kB low:2240kB high:2688kB active_anon:67264kB inactive_anon:69376kB active_file:399872kB inactive_file:399552kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:1047680kB mlocked:0kB dirty:377664kB writeback:38336kB mapped:64kB shmem:0kB slab_reclaimable:5504kB slab_unreclaimable:21184kB kernel_stack:480kB pagetables:15424kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Node 0 DMA: 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB 0*8192kB 0*16384kB = 0kB
Node 1 DMA: 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB 0*8192kB 0*16384kB = 0kB
66497 total pagecache pages
56 pages in swap cache
Swap cache stats: add 538, delete 482, find 127/141
Free swap = 5161024kB
Total swap = 5177280kB
81920 pages RAM
900 pages reserved
47062 pages shared
39873 pages non-shared
sd 0:0:1:0: Can't allocate memory for indirect table
sd 0:0:1:0: couldn't convert cmd to srp_cmd
CAI Qian
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