Nearly succes with suspend to disk in -test5-mm2

[Mathieu LESNIAK]

Hi,

I've tested the last kernel of -mm series, -test5-mm2. One of the 
important feature to me is the suspend to disk, and it's one of the 
first kernel that suspend fine on my laptop. I'm now able to do a 
suspend / resume cycle with nearly no problem :)
However, I saw some oops while resuming. Nothing critical, but if it an 
help debugging ...

See the attached file for the syslog part showing suspend / resume with 
the oops.

I can give more details on my setup if you want.

Mathieu LESNIAK
Sep 15 20:46:38 minimaverick kernel: Stopping tasks: ================================|
Sep 15 20:46:38 minimaverick kernel: Freeing memory: ........................|
Sep 15 20:46:38 minimaverick kernel: hdc: start_power_step(step: 0)
Sep 15 20:46:38 minimaverick kernel: hdc: completing PM request, suspend
Sep 15 20:46:38 minimaverick kernel: hda: start_power_step(step: 0)
Sep 15 20:46:38 minimaverick kernel: hda: start_power_step(step: 1)
Sep 15 20:46:38 minimaverick kernel: hda: complete_power_step(step: 1, stat: 50, err: 0)
Sep 15 20:46:38 minimaverick kernel: hda: completing PM request, suspend
Sep 15 20:46:38 minimaverick kernel: eth0: remaining active for wake-on-lan
Sep 15 20:46:38 minimaverick kernel: PM: Attempting to suspend to disk.
Sep 15 20:46:38 minimaverick kernel: PM: snapshotting memory.
Sep 15 20:46:38 minimaverick kernel: /critical section: Counting pages to copy[nosave c044d000] (pages needed: 3978+512=4490 free: 44901)
Sep 15 20:46:38 minimaverick kernel: Alloc pagedir
Sep 15 20:46:39 minimaverick kernel: [nosave c044d000]<7>PM: Image restored successfully.
Sep 15 20:46:39 minimaverick kernel: Freeing prev allocated pagedir
Sep 15 20:46:39 minimaverick kernel: eth0: autonegotiation did not complete in 4000 usec.
Sep 15 20:46:39 minimaverick kernel: hda: Wakeup request inited, waiting for !BSY...
Sep 15 20:46:39 minimaverick kernel: hda: start_power_step(step: 1000)
Sep 15 20:46:39 minimaverick kernel: blk: queue c1377800, I/O limit 4095Mb (mask 0xffffffff)
Sep 15 20:46:39 minimaverick kernel: hda: completing PM request, resume
Sep 15 20:46:39 minimaverick kernel: hdc: Wakeup request inited, waiting for !BSY...
Sep 15 20:46:39 minimaverick kernel: hdc: start_power_step(step: 1000)
Sep 15 20:46:39 minimaverick kernel: hdc: completing PM request, resume
Sep 15 20:46:39 minimaverick kernel: Restarting tasks...<3>bad: scheduling while atomic!
Sep 15 20:46:39 minimaverick kernel: Call Trace:
Sep 15 20:46:39 minimaverick kernel:  [schedule+1436/1456] schedule+0x59c/0x5b0
Sep 15 20:46:39 minimaverick kernel:  [wake_up_process+38/48] wake_up_process+0x26/0x30
Sep 15 20:46:39 minimaverick kernel:  [thaw_processes+164/256] thaw_processes+0xa4/0x100
Sep 15 20:46:39 minimaverick kernel:  [acpi_pm_finish+20/54] acpi_pm_finish+0x14/0x36
Sep 15 20:46:39 minimaverick kernel:  [finish+22/64] finish+0x16/0x40
Sep 15 20:46:39 minimaverick kernel:  [pm_suspend_disk+126/192] pm_suspend_disk+0x7e/0xc0
Sep 15 20:46:39 minimaverick kernel:  [enter_state+165/176] enter_state+0xa5/0xb0
Sep 15 20:46:39 minimaverick kernel:  [state_store+103/113] state_store+0x67/0x71
Sep 15 20:46:39 minimaverick kernel:  [subsys_attr_store+58/64] subsys_attr_store+0x3a/0x40
Sep 15 20:46:39 minimaverick kernel:  [flush_write_buffer+59/80] flush_write_buffer+0x3b/0x50
Sep 15 20:46:39 minimaverick kernel:  [sysfs_write_file+96/112] sysfs_write_file+0x60/0x70
Sep 15 20:46:39 minimaverick kernel:  [sysfs_write_file+0/112] sysfs_write_file+0x0/0x70
Sep 15 20:46:39 minimaverick kernel:  [vfs_write+184/304] vfs_write+0xb8/0x130
Sep 15 20:46:39 minimaverick kernel:  [sys_write+66/112] sys_write+0x42/0x70
Sep 15 20:46:39 minimaverick kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
Sep 15 20:46:39 minimaverick kernel: 
Sep 15 20:46:39 minimaverick kernel:  done
Sep 15 20:46:39 minimaverick kernel: bad: scheduling while atomic!
Sep 15 20:46:39 minimaverick kernel: Call Trace:
Sep 15 20:46:39 minimaverick kernel:  [schedule+1436/1456] schedule+0x59c/0x5b0
Sep 15 20:46:39 minimaverick kernel:  [sys_write+66/112] sys_write+0x42/0x70
Sep 15 20:46:39 minimaverick kernel:  [work_resched+5/22] work_resched+0x5/0x16
Sep 15 20:46:39 minimaverick kernel: 
Sep 15 20:46:39 minimaverick kernel: Unable to handle kernel paging request at virtual address 401279b8
Sep 15 20:46:39 minimaverick kernel:  printing eip:
Sep 15 20:46:39 minimaverick kernel: 401279b8
Sep 15 20:46:39 minimaverick kernel: *pde = 084d3067
Sep 15 20:46:39 minimaverick kernel: *pte = 00000000
Sep 15 20:46:39 minimaverick kernel: Oops: 0004 [#1]
Sep 15 20:46:39 minimaverick kernel: PREEMPT 
Sep 15 20:46:39 minimaverick kernel: CPU:    0
Sep 15 20:46:39 minimaverick kernel: EIP:    0073:[<401279b8>]    Not tainted VLI
Sep 15 20:46:39 minimaverick kernel: EFLAGS: 00010246
Sep 15 20:46:39 minimaverick kernel: EIP is at 0x401279b8
Sep 15 20:46:39 minimaverick kernel: eax: 00000004   ebx: 00000001   ecx: 080f8c08   edx: 00000004
Sep 15 20:46:39 minimaverick kernel: esi: 00000004   edi: 080f8c08   ebp: bffff7c8   esp: bffff798
Sep 15 20:46:39 minimaverick kernel: ds: 007b   es: 007b   ss: 007b
Sep 15 20:46:39 minimaverick kernel: Process bash (pid: 429, threadinfo=c80f4000 task=ca26f310)
Sep 15 20:46:39 minimaverick kernel:  <6>note: bash[429] exited with preempt_count 1
Sep 15 20:46:39 minimaverick kernel: Losing too many ticks!
Sep 15 20:46:39 minimaverick kernel: TSC cannot be used as a timesource. (Are you running with SpeedStep?)
Sep 15 20:46:39 minimaverick kernel: Falling back to a sane timesource.