----- Original Message ----- > From: "CAI Qian" <caiqian@xxxxxxxxxx> > To: "linux-mm" <linux-mm@xxxxxxxxx> > Cc: "linux-kernel" <linux-kernel@xxxxxxxxxxxxxxx> > Sent: Tuesday, January 8, 2013 5:46:32 PM > Subject: mmap regression on power7? > > Noticed that this test is failing at the moment up to v3.8.0-rc1, This turned out to be a possible gcc regression introduced in 4.7, so will be tracked there. > 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 > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@xxxxxxxxx. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a> > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>