lkml.org 
[lkml]   [2009]   [Aug]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Date
    SubjectPatch "page-allocator: preserve PFN ordering when __GFP_COLD is set" fails on my system
    Hi,

    I get the following Ooops message when "udevadm" is running on an ARM S3C2440
    CPU based system:

    [...]
    starting udevd...done
    Unable to handle kernel paging request at virtual address e3540000
    pgd = c39d4000
    [e3540000] *pgd=00000000
    Internal error: Oops: 5 [#1]
    Modules linked in:
    CPU: 0 Not tainted (2.6.31-rc4-00296-ge084b2d-dirty #10)
    PC is at strlen+0xc/0x20
    LR is at kobject_get_path+0x24/0xa4
    pc : [<c0115338>] lr : [<c0111f48>] psr: a0000013
    sp : c39bdea0 ip : 00000005 fp : c029645b
    r10: c02e0430 r9 : 00000000 r8 : c3802c60
    r7 : c001de30 r6 : 000000d0 r5 : 00000001 r4 : c001de30
    r3 : e3550001 r2 : e3540000 r1 : 000000d0 r0 : e3540000
    Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
    Control: c000717f Table: 339d4000 DAC: 00000015
    Process udevadm (pid: 325, stack limit = 0xc39bc270)
    Stack: (0xc39bdea0 to 0xc39be000)
    dea0: c001de28 00000003 c393d778 c399d000 c3802c60 c014dce0 c029645b c0112200
    dec0: c393d778 00000000 00000003 c393d780 c399d000 c0112400 00000000 00020001
    dee0: c0307fdc 00000000 c3950960 c027ddc3 c380cda0 c343b3d4 c3811e60 00000000
    df00: 00000000 c393d778 00000003 c3960520 c393d780 c02e0470 c3960538 c39bdf88
    df20: 00019cb0 c014dd80 c382db20 00000000 c3960538 c38ede7c 00000003 c014d464
    df40: c38ede7c c00bf224 c382db20 00019cb0 c39bdf88 00000004 00000003 c39bc000
    df60: 00000000 c0080bd8 c343b3d4 00000020 00000000 00000000 c382db20 00000004
    df80: c0022fa8 c0080d38 00000000 00000000 bead3250 00000000 00026d98 00000003
    dfa0: bead3250 c0022e00 00026d98 00000003 00000003 00019cb0 00000003 00000000
    dfc0: 00026d98 00000003 bead3250 00000004 00022a90 bead3678 00019cb0 00019cb0
    dfe0: 00022a94 bead3250 00018114 400d8f1c 40000010 00000003 00000000 00000000
    [<c0115338>] (strlen+0xc/0x20) from [<c0111f48>] (kobject_get_path+0x24/0xa4)
    [<c0111f48>] (kobject_get_path+0x24/0xa4) from [<c014dce0>] (dev_uevent+0x1dc/0x208)
    [<c014dce0>] (dev_uevent+0x1dc/0x208) from [<c0112400>] (kobject_uevent_env+0x18c/0x3a8)
    [<c0112400>] (kobject_uevent_env+0x18c/0x3a8) from [<c014dd80>] (store_uevent+0x74/0x88)
    [<c014dd80>] (store_uevent+0x74/0x88) from [<c014d464>] (dev_attr_store+0x20/0x28)
    [<c014d464>] (dev_attr_store+0x20/0x28) from [<c00bf224>] (sysfs_write_file+0x104/0x13c)
    [<c00bf224>] (sysfs_write_file+0x104/0x13c) from [<c0080bd8>] (vfs_write+0xb0/0x15c)
    [<c0080bd8>] (vfs_write+0xb0/0x15c) from [<c0080d38>] (sys_write+0x40/0x6c)
    [<c0080d38>] (sys_write+0x40/0x6c) from [<c0022e00>] (ret_fast_syscall+0x0/0x2c)
    Code: c02dbe78 e1a02000 ea000000 e2800001 (e5d03000)
    ---[ end trace 4d391449ae70e71a ]---
    Segmentation fault
    [...]

    This Oops does not occure in v2.6.31-rc4 and occures in v2.6.31-rc5. Bisected
    to the commit:

    e084b2d95e48b31aa45f9c49ffc6cdae8bdb21d4
    "page-allocator: preserve PFN ordering when __GFP_COLD is set"

    But its curious: The same binary kernel still runs without this oops on an ARM
    S3C2410 CPU.

    Regards,
    Juergen

    --
    Pengutronix e.K. | Juergen Beisert |
    Linux Solutions for Science and Industry | Phone: +49-8766-939 228 |
    Vertretung Sued/Muenchen, Germany | Fax: +49-5121-206917-5555 |
    Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de/ |


    \
     
     \ /
      Last update: 2009-08-11 18:35    [W:0.026 / U:0.552 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site