Reuben Farrelly <[email protected]> wrote:
>
> >
> >Reuben, could you please try the patch below? Thanks!
> >
> >Russell, could you please tell me if ldisc->write_wakeup (tty_wakwup) and
> >ldisc->read are allowed to be called from an IRQ context? IOW I wonder if
> >I can use spil_lock_bh instead of spil_lock_irqsave to protect serport
> >flags.
> >
> >--
> >Dmitry
> >
> > serport.c | 98
> > +++++++++++++++++++++++++++++++++++++++++++-------------------
> > 1 files changed, 68 insertions(+), 30 deletions(-)
> >
> >Index: dtor/drivers/input/serio/serport.c
> >===================================================================
> >--- dtor.orig/drivers/input/serio/serport.c
> >+++ dtor/drivers/input/serio/serport.c
> >@@ -27,11 +27,15 @@ MODULE_LICENSE("GPL");
> > MODULE_ALIAS_LDISC(N_MOUSE);
>
>
> I've done some testing this afternoon and it seems that this patch
> fixes the problem in -mm4. I don't even have a serial
> mouse/keyboard, but do have a serial PCI card onboard. The box has a
> USB connection to a Belkin KVM instead of directly attached input devices.
>
> I also note that it is occurring on kernel-smp-2.6.11-1.1219_FC4 - so
> it is probably a problem in mainline as well as -mm.
Can you please confirm that the above fix is present in 2.6.12-rc5 and that
2.6.12-rc5 is working OK?
>
> Now I'm crashing a bit further through the shutdown, here's the stacktrace:
Is this still occurring in either 2.6.12-rc5 or 2.6.12-rc5-mm1?
> INIT: Sending processes the TERM signal
> Stopping yum: Disabling nightly yum update: [ OK ]
> [ OK ]
> Stopping cups-config-daemon: [ OK ]
> Stopping HAL daemon: [ OK ]
> Stopping system message bus: [ OK ]
> Stopping atd: [ OK ]
> Stopping cups: [ OK ]
> Shutting down xfs: [ OK ]
> [ OK ] down console mouse services: [ OK ]
> Shutting down NFS mountd: [ OK ]
> Shutting down NFS daemon: nfsd: last server has exited
> nfsd: unexporting all filesystems
> RPC: error 5 connecting to server localhost
> RPC: failed to contact portmap (errno -5).
> Unable to handle kernel paging request at virtual address f2826d2c
> printing eip:
> c01337a9
> *pde = 00000000
> Oops: 0000 [#1]
> SMP DEBUG_PAGEALLOC
> Modules linked in: nfsd exportfs md5 ipv6 lp snd_usb_audio
> snd_usb_lib pwc video
> dev usb_storage autofs4 eeprom lm85 i2c_sensor rfcomm l2cap bluetooth nfs lockd
> sunrpc dm_mod video button battery ac ohci1394 ieee1394 uhci_hcd
> ehci_hcd parpor
> t_serial parport_pc parport hw_random i2c_i801 i2c_core emu10k1_gp
> gameport snd_
> emu10k1 snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm_oss
> snd_mixer_oss snd_
> pcm snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore
> e100 mii flopp
> y ext3 jbd ata_piix libata sd_mod scsi_mod
> CPU: 0
> EIP: 0060:[<c01337a9>] Not tainted VLI
> EFLAGS: 00010087 (2.6.12-rc1-mm4)
> EIP is at worker_thread+0x149/0x230
> eax: 00000001 ebx: 00000212 ecx: f7eb4018 edx: f2826d20
> esi: f2826d24 edi: f7eb4000 ebp: 00000000 esp: f7e83f7c
> ds: 007b es: 007b ss: 0068
> Process events/0 (pid: 8, threadinfo=f7e83000 task=f7fefad0)
> Stack: f7eb4028 f7eb4010 f7eb4018 f7e83000 f2826d20 c014f4b0 00000001 00000000
> 000f41fa 00010000 00000000 00000000 f7fefad0 c011ea50 00100100 00200200
> ffffffff ffffffff fffffffc f7e46f54 f7eb4000 c0133660 c0137694 ffffffff
> Call Trace:
> [<c014f4b0>] cache_reap+0x0/0x240
> [<c011ea50>] default_wake_function+0x0/0x10
> [<c0133660>] worker_thread+0x0/0x230
> [<c0137694>] kthread+0x94/0xa0
> [<c0137600>] kthread+0x0/0xa0
> [<c01023f5>] kernel_thread_helper+0x5/0x10
> Code: 00 00 89 f8 e8 19 e3 1e 00 89 c3 8b 47 40 40 89 47 40 83 f8 03
> 0f 8f bd 00
> 00 00 8b 77 10 3b 74 24 04 74 71 8d 56 fc 89 54 24 10 <8b> 42 0c 89
> 44 24 14 8b
> 6a 10 8b 46 04 8b 16 89 10 89 36 89 42
> [ OK ]
> Shutting down NFS quotas: [FAILED]
> Shutting down NFS services: [ OK ]
> Stopping sshd: [ OK ]
> Stopping postfix: Shutting down postfix: <3>BUG: soft lockup
> detected on CPU#0!
>
> Pid: 3413, comm: rpc.rquotad
> EIP: 0060:[<c0321ac0>] CPU: 0
> EIP is at _spin_lock_irqsave+0x20/0x50
> EFLAGS: 00000286 Not tainted (2.6.12-rc1-mm4)
> EAX: f7eb4000 EBX: 00000246 ECX: f7eb4000 EDX: c22021a0
> ESI: f7eb4000 EDI: c22021a0 EBP: c01335b0 DS: 007b ES: 007b
> CR0: 8005003b CR2: 800147fc CR3: 37256d20 CR4: 000006e0
> [<c013350c>] __queue_work+0xc/0x50
> [<c012cc17>] run_timer_softirq+0xd7/0x1c0
> [<c0128950>] __do_softirq+0x80/0x100
> [<c0106adb>] do_softirq+0x4b/0x50
> =======================
> [<c010511c>] apic_timer_interrupt+0x1c/0x30
> [<c02b7ed8>] kfree_skbmem+0x8/0x20
> [<c02b007b>] cpufreq_governor+0x3b/0x50
> [<c014eed2>] kfree+0x62/0x90
> [<c02b7ed8>] kfree_skbmem+0x8/0x20
> [<c02b7fcc>] __kfree_skb+0xdc/0x1a0
> [<c02d2501>] netlink_recvmsg+0xf1/0x230
> [<c02b422a>] sock_recvmsg+0xfa/0x120
> [<c02b40d2>] sock_sendmsg+0xe2/0x110
> [<c0137b20>] autoremove_wake_function+0x0/0x30
> [<c0149d32>] __alloc_pages+0x122/0x440
> [<c01d94a2>] copy_from_user+0x42/0x80
> [<c02b5ba9>] sys_recvmsg+0x109/0x1e0
> [<c01d94a2>] copy_from_user+0x42/0x80
> [<c02b553e>] sys_sendto+0xfe/0x140
> [<c011a863>] do_page_fault+0x253/0x6a1
> [<c017c6a1>] d_alloc+0x141/0x1a0
> [<c01648d1>] fd_install+0x21/0x50
> [<c02b3e57>] sock_map_fd+0xf7/0x130
> [<c032068d>] schedule+0x97d/0xc10
> [<c02b5e67>] sys_socketcall+0x1e7/0x200
> [<c0103fbb>] sysenter_past_esp+0x54/0x79
>
> System is an up to date FC4- devel box with a 2.8 Ghz SMP Intel processor.
>
> reuben
>
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