bad: scheduling while atomic! / kernel 2.6.2

[Michael Sauer]

I get this about once in a month and filled a bugreport in february (via 
e-mail), but didn't hear anything, trying here now.

Symptoms: Running some random x application, the system seems to freeze short, 
then i get input back for about 1 minute but cannot run any new application 
(can't even login at console). The example below was triggered by opera.

Important hardware: amd duron 1300 (not overclocked), gigabye 7zxr, nvidia 
gforce 2 (with newest nvidia drivers 1.0-5336)
[18:25:52]root@vivane:/proc>cat interrupts 
CPU0       
0: 1642874 XT-PIC  timer
2: 0 XT-PIC  cascade
5: 2 XT-PIC  bttv0
8: 4 XT-PIC  rtc
9: 30416 XT-PIC  Ensoniq AudioPCI, eth0
10: 203081 XT-PIC  Ensoniq AudioPCI, uhci_hcd, uhci_hcd
11: 132737 XT-PIC  nvidia
14: 17761 XT-PIC  ide0
15: 20 XT-PIC  ide1
NMI: 0 
LOC: 1642806 
ERR: 3649
MIS: 0
[18:25:54]root@vivane:/proc>cat dma
4: cascade

taken from kern.log:
17:55:58 vivane kernel: Unable to handle kernel paging request at virtual 
address 1400000c
17:55:58 vivane kernel:  printing eip:
17:55:58 vivane kernel: c013f22e
17:55:58 vivane kernel: *pde = 00000000 
17:55:58 vivane kernel: Oops: 0002 [#1] 
17:55:58 vivane kernel: CPU:    0
17:55:58 vivane kernel: EIP:    0060:[<c013f22e>]    Tainted: P
17:55:58 vivane kernel: EFLAGS: 00010002
17:55:58 vivane kernel: EIP is at cache_alloc_refill+0xce/0x220
17:55:58 vivane kernel: eax: 14000008   ebx: f7e0dac0   ecx: 0000000b   edx: 
c1be1a50
17:55:58 vivane kernel: esi: d2be0080   edi: c1be1a44   ebp: f7e0dad0   esp: 
d8061e0c
17:55:58 vivane kernel: ds: 007b   es: 007b   ss: 0068
17:55:58 vivane kernel: Process opera (pid: 13216, threadinfo=d8060000 
task=f747acc0)
17:55:58 vivane kernel: Stack: 00000010 00000202 c03e2914 d436d0d8 c1be1a50 
c1be1a58 00000246 00000050
17:55:58 vivane kernel:        c1be1a44 df0b48c0 c013f5d6 c1be1a44 00000050 
ec2c494c f7973e00 ec2c494c
17:55:58 vivane kernel:        c0196b98 c1be1a44 00000050 c016d5dc f7973e00 
e138de74 ec2c494c d100b3c8
17:55:58 vivane kernel: Call Trace:
17:55:58 vivane kernel:  [<c013f5d6>] kmem_cache_alloc+0x56/0x70 
17:55:58 vivane kernel:  [<c0196b98>] ext3_alloc_inode+0x18/0x40
17:55:58 vivane kernel:  [<c016d5dc>] alloc_inode+0x1c/0x150
17:55:58 vivane kernel:  [<c016dfcc>] new_inode+0x1c/0x80
17:55:58 vivane kernel:  [<c018d7c5>] ext3_new_inode+0x45/0x790
17:55:58 vivane kernel:  [<c016c410>] d_alloc+0x20/0x200
17:55:58 vivane kernel:  [<c0194d75>] ext3_create+0x55/0xb0
17:55:58 vivane kernel:  [<c0163656>] vfs_create+0x76/0xd0
17:55:58 vivane kernel:  [<c0163c49>] open_namei+0x3e9/0x450
17:55:58 vivane kernel:  [<c015355e>] filp_open+0x3e/0x70
17:55:58 vivane kernel:  [<c0153a1b>] sys_open+0x5b/0x90
17:55:58 vivane kernel:  [<c010941b>] syscall_call+0x7/0xb
17:55:58 vivane kernel:
17:55:58 vivane kernel: Code: 89 50 04 89 02 c7 46 04 00 02 20 00 83 7e 14 ff 
c7 06 00 01
17:55:58 vivane kernel:  <6>note: opera[13216] exited with preempt_count 1
17:55:58 vivane kernel: Debug: sleeping function called from invalid context 
at include/linux/rwsem.h:43
17:55:58 vivane kernel: in_atomic():1, irqs_disabled():0
17:55:58 vivane kernel: Call Trace:
17:55:58 vivane kernel:  [<c011d02b>] __might_sleep+0xab/0xd0
17:55:58 vivane kernel:  [<c0121667>] do_exit+0xa7/0x440
17:55:58 vivane kernel:  [<c01199c0>] do_page_fault+0x0/0x53c
17:55:58 vivane kernel:  [<c010a501>] die+0xe1/0xf0
17:55:58 vivane kernel:  [<c0119b9e>] do_page_fault+0x1de/0x53c
17:55:58 vivane kernel:  [<c018ed6c>] ext3_get_block_handle+0xac/0x360
17:55:58 vivane kernel:  [<c015706e>] __find_get_block+0x6e/0x100
17:55:58 vivane kernel:  [<c01199c0>] do_page_fault+0x0/0x53c
17:55:58 vivane kernel:  [<c0109e45>] error_code+0x2d/0x38
17:55:58 vivane kernel:  [<c013f22e>] cache_alloc_refill+0xce/0x220
17:55:58 vivane kernel:  [<c013f5d6>] kmem_cache_alloc+0x56/0x70
17:55:58 vivane kernel:  [<c0196b98>] ext3_alloc_inode+0x18/0x40
17:55:58 vivane kernel:  [<c016d5dc>] alloc_inode+0x1c/0x150
17:55:58 vivane kernel:  [<c016dfcc>] new_inode+0x1c/0x80
17:55:58 vivane kernel:  [<c018d7c5>] ext3_new_inode+0x45/0x790
17:55:58 vivane kernel:  [<c016c410>] d_alloc+0x20/0x200
17:55:58 vivane kernel:  [<c0194d75>] ext3_create+0x55/0xb0 
17:55:58 vivane kernel:  [<c0163656>] vfs_create+0x76/0xd0 
17:55:58 vivane kernel:  [<c0163c49>] open_namei+0x3e9/0x450 
17:55:58 vivane kernel:  [<c015355e>] filp_open+0x3e/0x70
17:55:58 vivane kernel:  [<c0153a1b>] sys_open+0x5b/0x90
17:55:58 vivane kernel:  [<c010941b>] syscall_call+0x7/0xb
17:55:58 vivane kernel:  
17:55:58 vivane kernel: bad: scheduling while atomic!
17:55:58 vivane kernel: Call Trace:
17:55:58 vivane kernel:  [<c011bbdd>] schedule+0x56d/0x580
17:55:58 vivane kernel:  [<c0144aa3>] unmap_page_range+0x43/0x70
17:55:58 vivane kernel:  [<c0144c84>] unmap_vmas+0x1b4/0x210
17:55:58 vivane kernel:  [<c0148bab>] exit_mmap+0x7b/0x190
17:55:58 vivane kernel:  [<c011d6e4>] mmput+0x64/0xc0
17:55:58 vivane kernel:  [<c01216c6>] do_exit+0x106/0x440
17:55:58 vivane kernel:  [<c01199c0>] do_page_fault+0x0/0x53c
17:55:58 vivane kernel:  [<c010a501>] die+0xe1/0xf0
17:55:58 vivane kernel:  [<c0119b9e>] do_page_fault+0x1de/0x53c
17:55:58 vivane kernel:  [<c018ed6c>] ext3_get_block_handle+0xac/0x360
17:55:58 vivane kernel:  [<c015706e>] __find_get_block+0x6e/0x100
17:55:58 vivane kernel:  [<c01199c0>] do_page_fault+0x0/0x53c
17:55:58 vivane kernel:  [<c0109e45>] error_code+0x2d/0x38
17:55:58 vivane kernel:  [<c013f22e>] cache_alloc_refill+0xce/0x220
17:55:58 vivane kernel:  [<c013f5d6>] kmem_cache_alloc+0x56/0x70
17:55:58 vivane kernel:  [<c0196b98>] ext3_alloc_inode+0x18/0x40
17:55:58 vivane kernel:  [<c016d5dc>] alloc_inode+0x1c/0x150
17:55:58 vivane kernel:  [<c016dfcc>] new_inode+0x1c/0x80
17:55:58 vivane kernel:  [<c018d7c5>] ext3_new_inode+0x45/0x790
17:55:58 vivane kernel:  [<c016c410>] d_alloc+0x20/0x200
17:55:58 vivane kernel:  [<c0194d75>] ext3_create+0x55/0xb0
17:55:58 vivane kernel:  [<c0163656>] vfs_create+0x76/0xd0
17:55:58 vivane kernel:  [<c0163c49>] open_namei+0x3e9/0x450
17:55:58 vivane kernel:  [<c015355e>] filp_open+0x3e/0x70
17:55:58 vivane kernel:  [<c0153a1b>] sys_open+0x5b/0x90
17:55:58 vivane kernel:  [<c010941b>] syscall_call+0x7/0xb

The bad: scheduling while atomic! messages didn't stop so i only took the 
first one. I had to reset the computer because no input was possible anymore.
--
	mIc

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