[Users] Another 2.6.24 problem

[Kir Kolyshkin]

Dietmar,

The best course of action in such cases is to file bugs directly into 
bugzilla.openvz.org.

Dietmar Maurer wrote:
> Hi all,
>
> With latest 2.6.24 from git we get errors inside 'futex_wake'
> Not always in same program. It only happens from time to time.
>
> Any idea what can cause that? v2.6.24-ovz004 works without problems.
>
> - Dietmar
>
>
>
> Unable to handle kernel paging request at ffffffff8fcc289b RIP:
>  [<ffffffff8025cbf2>] futex_wake+0x58/0xd4
> PGD 203067 PUD 207063 PMD 0
> Oops: 0000 [1] PREEMPT SMP
> CPU: 2
> Modules linked in: e1000 thermal e1000e button processor evdev floppy sg
> pcspkr sermouse psmouse dm_mod usbhid hid usb_storage sd_mod
> sr_mod ide_disk ide_generic ide_cd cdrom ide_core shpchp pci_hotplug
> uhci_hcd ehci_hcd iTCO_wdt ahci libata scsi_mod i2c_i801 i2c_core isofs
> zlib_inflate msdos fat
> Pid: 4927, comm: pycentral Not tainted 2.6.24 #1 ovz005
> RIP: 0010:[<ffffffff8025cbf2>]  [<ffffffff8025cbf2>]
> futex_wake+0x58/0xd4
> RSP: 0018:ffff810205287dd8  EFLAGS: 00010282
> RAX: 000000000001fec2 RBX: 00002ad4fac5d0e4 RCX: 000000000000a1dc
> RDX: 00000000a3a5f0f6 RSI: 0000000097c3d800 RDI: ffffffff8fcc2883
> RBP: 0000000000000000 R08: 00002ad4fab5a2b4 R09: 0000000000000000
> R10: 00002ad4fac5d0e0 R11: 0000000000000202 R12: ffffffff80637f80
> R13: ffff81011451c520 R14: ffffffff80637f88 R15: 000000007fffffff
> FS:  00002ad4fb121f60(0000) GS:ffff810215d19b40(0000)
> knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: ffffffff8fcc289b CR3: 0000000175d6e000 CR4: 00000000000006e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process pycentral (pid: 4927, veid=0, threadinfo ffff810205286000, task
> ffff810215f6e120)
> Stack:  00002ad4fac5d000 ffff81011451c4c0 00000000000000e6
> ffffffff802b0e9a
>  ffff810205287ea8 00002ad4fab5a2b4 00002ad4fac5d0e0 00002ad4fab5c000
>  0000000000000001 00000000fab5c320 000000007fffffff ffffffff8025d8c4
> Call Trace:
>  [<ffffffff802b0e9a>] may_open+0xc2/0x21f
>  [<ffffffff8025d8c4>] do_futex+0x84/0xa66
>  [<ffffffff8025e3a0>] sys_futex+0xfa/0x118
>  [<ffffffff8020c03e>] system_call+0x7e/0x83
>
>
> Code: 48 8b 5f 18 eb 43 48 8b 14 24 48 39 57 48 48 8d 47 48 75 2e
> RIP  [<ffffffff8025cbf2>] futex_wake+0x58/0xd4
>  RSP <ffff810205287dd8>
> CR2: ffffffff8fcc289b
> ---[ end trace 542031ea75a6aeb3 ]---
> note: pycentral[4927] exited with preempt_count 1
>