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[Xen-devel] Re: [GIT PULL tip/x86/mm] xen/x86 fixes

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Date: Fri, 11 Mar 2011 17:21:29 -0500

Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>

Delivery-date: Fri, 11 Mar 2011 14:24:20 -0800

List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On Fri, Mar 11, 2011 at 01:17:23PM +0000, Stefano Stabellini wrote: > Hello, > recently we had a couple of long discussions with Yinghai about boot > crashes on xen, related to pagetable initialization. > As a result we came up with three patches, two of them fix the first [1] > boot crash and provide a nice cleanup on native: I don't know why this is happening now, but it could be very well related to the build config. Smaller builds don't seem to encounter this, while this is a distro type build. If I use: > Stefano Stabellini (1): > xen: set max_pfn_mapped to the last pfn mapped it hangs during bootup. The machine hangs during the box (no keyboard interaction) and I can see this in the bootup. Mar 11 16:30:08 phenom kernel: [ 9.060569] lp: driver loaded but no devices found Mar 11 16:30:08 phenom kernel: [ 9.065769] piix4_smbus 0000:00:14.0: SMBus Host Controller at 0xb00, revision 0 Mar 11 16:30:08 phenom kernel: [ 9.075831] SP5100 TCO timer: SP5100 TCO WatchDog Timer Driver v0.01 Mar 11 16:30:08 phenom kernel: [ 9.075984] ------------[ cut here ]------------ Mar 11 16:30:08 phenom kernel: [ 9.075993] WARNING: at /home/konrad/ssd/linux/arch/x86/mm/ioremap.c:109 __ioremap_caller+0x3a3/0x3b0() Mar 11 16:30:08 phenom kernel: [ 9.075997] Hardware name: TA890FXE Mar 11 16:30:08 phenom kernel: [ 9.075999] Modules linked in: sp5100_tco(+) i2c_piix4 i2c_algo_bit video lp parport usb_storage usbhid hid uas btrfs r8169 ahci libahci zlib_deflate libcrc32c Mar 11 16:30:08 phenom kernel: [ 9.076024] Pid: 449, comm: modprobe Tainted: G W 2.6.38-rc8-master-00310-gecfaad3 #40 Mar 11 16:30:08 phenom kernel: [ 9.076027] Call Trace: Mar 11 16:30:08 phenom kernel: [ 9.076034] [<ffffffff8106214f>] ? warn_slowpath_common+0x7f/0xc0 Mar 11 16:30:08 phenom kernel: [ 9.076039] [<ffffffff81007b4f>] ? xen_restore_fl_direct_end+0x0/0x1 Mar 11 16:30:08 phenom kernel: [ 9.076045] [<ffffffff810621aa>] ? warn_slowpath_null+0x1a/0x20 Mar 11 16:30:08 phenom kernel: [ 9.076049] [<ffffffff8103e9a3>] ? __ioremap_caller+0x3a3/0x3b0 Mar 11 16:30:08 phenom kernel: [ 9.076055] [<ffffffff815c157a>] ? error_exit+0x2a/0x60 Mar 11 16:30:08 phenom kernel: [ 9.076059] [<ffffffff815c10a1>] ? retint_restore_args+0x5/0x6 Mar 11 16:30:08 phenom kernel: [ 9.076064] [<ffffffffa012257d>] ? sp5100_tco_init+0xfc/0xb7f [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076068] [<ffffffff8103ea77>] ? ioremap_nocache+0x17/0x20 Mar 11 16:30:08 phenom kernel: [ 9.076072] [<ffffffffa012257d>] ? sp5100_tco_init+0xfc/0xb7f [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076077] [<ffffffff813b7417>] ? platform_drv_probe+0x17/0x20 Mar 11 16:30:08 phenom kernel: [ 9.076081] [<ffffffff813b6116>] ? driver_probe_device+0x96/0x1c0 Mar 11 16:30:08 phenom kernel: [ 9.076084] [<ffffffff813b62e0>] ? __device_attach+0x0/0x60 Mar 11 16:30:08 phenom kernel: [ 9.076087] [<ffffffff813b6333>] ? __device_attach+0x53/0x60 Mar 11 16:30:08 phenom kernel: [ 9.076091] [<ffffffff813b51a8>] ? bus_for_each_drv+0x68/0x90 Mar 11 16:30:08 phenom kernel: [ 9.076094] [<ffffffff813b63ff>] ? device_attach+0x8f/0xb0 Mar 11 16:30:08 phenom kernel: [ 9.076097] [<ffffffff813b4f7d>] ? bus_probe_device+0x2d/0x50 Mar 11 16:30:08 phenom kernel: [ 9.076101] [<ffffffff813b38e9>] ? device_add+0x639/0x710 Mar 11 16:30:08 phenom kernel: [ 9.076105] [<ffffffff813b2121>] ? dev_set_name+0x41/0x50 Mar 11 16:30:08 phenom kernel: [ 9.076109] [<ffffffff813b7e98>] ? platform_device_add+0x138/0x1f0 Mar 11 16:30:08 phenom kernel: [ 9.076112] [<ffffffff813b82ce>] ? platform_device_register_resndata+0xae/0xc0 Mar 11 16:30:08 phenom kernel: [ 9.076117] [<ffffffffa0006000>] ? sp5100_tco_init_module+0x0/0x1000 [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076121] [<ffffffffa0006051>] ? sp5100_tco_init_module+0x51/0x1000 [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076125] [<ffffffffa0006000>] ? sp5100_tco_init_module+0x0/0x1000 [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076129] [<ffffffff8100214c>] ? do_one_initcall+0x13c/0x190 Mar 11 16:30:08 phenom kernel: [ 9.076133] [<ffffffff8109fd8b>] ? sys_init_module+0xfb/0x250 Mar 11 16:30:08 phenom kernel: [ 9.076137] [<ffffffff8100bfc2>] ? system_call_fastpath+0x16/0x1b Mar 11 16:30:08 phenom kernel: [ 9.076140] ---[ end trace a7919e7f17c0a727 ]--- Mar 11 16:30:08 phenom kernel: [ 9.076310] PGD 1f0827067 PUD 1f0828067 PMD 1dcdfd067 PTE 0 Mar 11 16:30:08 phenom kernel: [ 9.076329] CPU 0 Mar 11 16:30:08 phenom kernel: [ 9.076332] Modules linked in: sp5100_tco(+) i2c_piix4 i2c_algo_bit video lp parport usb_storage usbhid hid uas btrfs r8169 ahci libahci zlib_deflate libcrc32c Mar 11 16:30:08 phenom kernel: [ 9.076359] Mar 11 16:30:08 phenom kernel: [ 9.076364] Pid: 449, comm: modprobe Tainted: G W 2.6.38-rc8-master-00310-gecfaad3 #40 BIOSTAR Group TA890FXE/TA890FXE Mar 11 16:30:08 phenom kernel: [ 9.076380] RIP: e030:[<ffffffffa0122616>] [<ffffffffa0122616>] sp5100_tco_init+0x195/0xb7f [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076392] RSP: e02b:ffff8801cfe1dce8 EFLAGS: 00010202 Mar 11 16:30:08 phenom kernel: [ 9.076400] RAX: ffffc90012658e00 RBX: 0000000000000cd7 RCX: 0000000000b8fe08 Mar 11 16:30:08 phenom kernel: [ 9.076407] RDX: 0000000000000cd7 RSI: 00000000000000a0 RDI: ffff8801dde1c000 Mar 11 16:30:08 phenom kernel: [ 9.076411] RBP: ffff8801cfe1dd08 R08: ffff8801c8a8c800 R09: ffff880000000000 Mar 11 16:30:08 phenom kernel: [ 9.076417] R10: 0000000000000010 R11: 0000000000000000 R12: 00000000ffffffed Mar 11 16:30:08 phenom kernel: [ 9.076424] R13: ffffffffa0124088 R14: 0000000000000000 R15: 0000000000000000 Mar 11 16:30:08 phenom kernel: [ 9.076436] FS: 00007ff69583f700(0000) GS:ffff8800bfed1000(0000) knlGS:0000000000000000 Mar 11 16:30:08 phenom kernel: [ 9.076442] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b Mar 11 16:30:08 phenom kernel: [ 9.076450] CR2: ffffc90012658e00 CR3: 00000001cfe7c000 CR4: 0000000000000660 Mar 11 16:30:08 phenom kernel: [ 9.076458] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Mar 11 16:30:08 phenom kernel: [ 9.076465] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Mar 11 16:30:08 phenom kernel: [ 9.076470] Process modprobe (pid: 449, threadinfo ffff8801cfe1c000, task ffff8801cca516c0) Mar 11 16:30:08 phenom kernel: [ 9.076483] ffff8801cfe1dd18 0000000e813b5fba ffff8801dcef6c10 ffff8801dcef6c10 Mar 11 16:30:08 phenom kernel: [ 9.076495] ffff8801cfe1dd18 ffffffff813b7417 ffff8801cfe1dd48 ffffffff813b6116 Mar 11 16:30:08 phenom kernel: [ 9.076505] ffff8801cfe1dd68 ffffffffa0124088 ffff8801dcef6c10 ffffffff813b62e0 Mar 11 16:30:08 phenom kernel: [ 9.076525] [<ffffffff813b7417>] platform_drv_probe+0x17/0x20 Mar 11 16:30:08 phenom kernel: [ 9.076532] [<ffffffff813b6116>] driver_probe_device+0x96/0x1c0 Mar 11 16:30:08 phenom kernel: [ 9.076538] [<ffffffff813b62e0>] ? __device_attach+0x0/0x60 Mar 11 16:30:08 phenom kernel: [ 9.076545] [<ffffffff813b6333>] __device_attach+0x53/0x60 Mar 11 16:30:08 phenom kernel: [ 9.076550] [<ffffffff813b51a8>] bus_for_each_drv+0x68/0x90 Mar 11 16:30:08 phenom kernel: [ 9.076555] [<ffffffff813b63ff>] device_attach+0x8f/0xb0 Mar 11 16:30:08 phenom kernel: [ 9.076560] [<ffffffff813b4f7d>] bus_probe_device+0x2d/0x50 Mar 11 16:30:08 phenom kernel: [ 9.076566] [<ffffffff813b38e9>] device_add+0x639/0x710 Mar 11 16:30:08 phenom kernel: [ 9.076573] [<ffffffff813b2121>] ? dev_set_name+0x41/0x50 Mar 11 16:30:08 phenom kernel: [ 9.076578] [<ffffffff813b7e98>] platform_device_add+0x138/0x1f0 Mar 11 16:30:08 phenom kernel: [ 9.076584] [<ffffffff813b82ce>] platform_device_register_resndata+0xae/0xc0 Mar 11 16:30:08 phenom kernel: [ 9.076590] [<ffffffffa0006000>] ? sp5100_tco_init_module+0x0/0x1000 [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076597] [<ffffffffa0006051>] sp5100_tco_init_module+0x51/0x1000 [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076603] [<ffffffffa0006000>] ? sp5100_tco_init_module+0x0/0x1000 [sp5100_tco] Mar 11 16:30:08 phenom kernel: [ 9.076609] [<ffffffff8100214c>] do_one_initcall+0x13c/0x190 Mar 11 16:30:08 phenom kernel: [ 9.076614] [<ffffffff8109fd8b>] sys_init_module+0xfb/0x250 Mar 11 16:30:08 phenom kernel: [ 9.076620] [<ffffffff8100bfc2>] system_call_fastpath+0x16/0x1b Mar 11 16:30:08 phenom kernel: [ 9.076722] RSP <ffff8801cfe1dce8> Mar 11 16:30:08 phenom kernel: [ 9.076730] ---[ end trace a7919e7f17c0a728 ]--- Mar 11 16:30:08 phenom kernel: [ 9.129655] [drm] Initialized drm 1.1.0 20060810 Mar 11 16:30:08 phenom kernel: [ 9.163789] EXT4-fs (sdd1): mounted filesystem with ordered data mode. Opts: errors=remount-ro Mar 11 16:30:08 phenom kernel: [ 9.169000] MCE: In-kernel MCE decoding enabled. Mar 11 16:30:08 phenom kernel: [ 9.180697] udev[419]: renamed network interface eth0 to eth2 Mar 11 16:30:08 phenom kernel: [ 9.190273] EDAC MC: Ver: 2.1.0 Mar 11 2011 A normal boot has this in /proc/ioports: 0b00-0b1f : pnp 00:09 0b00-0b07 : piix4_smbus (there is no sp5100_tco, even thought it is loaded). If I back out that patch, the machine boots fine. > Yinghai Lu (1): > x86: Cleanup highmap after brk is concluded If I use this one above, the machine crashes right away. I tried a build with just that patch and had the same failure. Attached is the config I used.

Attachment: .config
Description: Text document

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