Oopsen with pcmcia aironet wireless (2.5.47)

I see lots of oopsen when I insert an Aironet PC4800 802.11 card.

Dell Inspiron 8000
Red Hat 8.0 + linux 2.5.47

Nov 12 15:40:38 localhost cardmgr[647]: socket 1: Aironet PC4800
Nov 12 15:40:38 localhost kernel: cs: memory probe 0xa0000000-0xa0ffffff: clean.Nov 12 15:40:38 localhost cardmgr[647]: executing: 'modprobe airo_cs'
Nov 12 15:40:38 localhost kernel: airo:  Probing for PCI adapters
Nov 12 15:40:38 localhost kernel: airo:  Finished probing for PCI adapters
Nov 12 15:40:38 localhost kernel: airo: MAC enabled eth1 0:40:96:28:c5:9c
Nov 12 15:40:38 localhost kernel: eth1: index 0x05: Vcc 5.0, Vpp 5.0, irq 3, io
0x0100-0x013f
Nov 12 15:40:38 localhost cardmgr[647]: executing: './network start eth1'
Nov 12 15:40:38 localhost /etc/hotplug/net.agent: invoke ifup eth1
Nov 12 15:40:38 localhost /etc/hotplug/net.agent: invoke ifup wifi0
Nov 12 15:40:39 localhost kernel: end_request: I/O error, dev hdb, sector 0
Nov 12 15:40:39 localhost last message repeated 3 times
Nov 12 15:40:39 localhost kernel: end_request: I/O error, dev hdc, sector 0
Nov 12 15:40:39 localhost last message repeated 2 times
Nov 12 15:40:39 localhost kernel: Debug: sleeping function called from illegal context at include/asm/semaphore.h:145
Nov 12 15:40:39 localhost kernel: Call Trace:
Nov 12 15:40:39 localhost kernel:  [<e1a59215>] PC4500_readrid+0x55/0x160 [airo]Nov 12 15:40:39 localhost kernel:  [<e1a5f5fa>] .rodata.str1.1+0x2e2/0x73f [airo]
Nov 12 15:40:39 localhost kernel:  [<e1a566a9>] readStatsRid+0x29/0x50 [airo]
Nov 12 15:40:39 localhost kernel:  [<e1a56c99>] airo_get_stats+0x29/0xe0 [airo]
Nov 12 15:40:39 localhost kernel:  [<c013f82c>] __pagevec_free+0x1c/0x30
Nov 12 15:40:39 localhost kernel:  [<c013d29e>] release_pages+0x14e/0x180
Nov 12 15:40:39 localhost kernel:  [<c013f3c1>] buffered_rmqueue+0xb1/0x150
Nov 12 15:40:39 localhost kernel:  [<c013f4e4>] __alloc_pages+0x84/0x2c0
Nov 12 15:40:39 localhost kernel:  [<c013d2f3>] __pagevec_release+0x23/0x40
Nov 12 15:40:39 localhost kernel:  [<c0133b68>] do_anonymous_page+0x1b8/0x1e0
Nov 12 15:40:39 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:39 localhost kernel:  [<c0163f03>] alloc_inode+0x173/0x1a0
Nov 12 15:40:39 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:39 localhost kernel:  [<c01648d7>] get_new_inode_fast+0x47/0x100
Nov 12 15:40:39 localhost kernel:  [<c0164c40>] iget_locked+0x70/0x80
Nov 12 15:40:39 localhost kernel:  [<c01651af>] wake_up_inode+0xf/0xd0
Nov 12 15:40:39 localhost kernel:  [<c021bf57>] vsnprintf+0x207/0x450
Nov 12 15:40:39 localhost kernel:  [<c021c1f7>] vsprintf+0x27/0x30
Nov 12 15:40:39 localhost kernel:  [<c021c21f>] sprintf+0x1f/0x30
Nov 12 15:40:39 localhost kernel:  [<c0331b1b>] sprintf_stats+0xeb/0x100
Nov 12 15:40:39 localhost kernel:  [<c0331b82>] dev_get_info+0x52/0xc0
Nov 12 15:40:39 localhost kernel:  [<c0178aa1>] proc_file_read+0x1a1/0x1c0
Nov 12 15:40:39 localhost kernel:  [<c014c57c>] vfs_read+0xdc/0x150
Nov 12 15:40:39 localhost kernel:  [<c01108ff>] sys_mmap2+0x9f/0xe0
Nov 12 15:40:39 localhost kernel:  [<c014c83e>] sys_read+0x3e/0x60
Nov 12 15:40:39 localhost kernel:  [<c010b183>] syscall_call+0x7/0xb
Nov 12 15:40:39 localhost kernel:
Nov 12 15:40:40 localhost kernel: Debug: sleeping function called from illegal context at include/asm/semaphore.h:145
Nov 12 15:40:40 localhost kernel: Call Trace:
Nov 12 15:40:40 localhost kernel:  [<e1a59215>] PC4500_readrid+0x55/0x160 [airo]Nov 12 15:40:40 localhost kernel:  [<e1a5f5fa>] .rodata.str1.1+0x2e2/0x73f [airo]
Nov 12 15:40:40 localhost kernel:  [<e1a566a9>] readStatsRid+0x29/0x50 [airo]
Nov 12 15:40:40 localhost kernel:  [<e1a56c99>] airo_get_stats+0x29/0xe0 [airo]
Nov 12 15:40:40 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:40 localhost kernel:  [<c0163f03>] alloc_inode+0x173/0x1a0
Nov 12 15:40:40 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:40 localhost kernel:  [<c01648d7>] get_new_inode_fast+0x47/0x100
Nov 12 15:40:40 localhost kernel:  [<c0164c40>] iget_locked+0x70/0x80
Nov 12 15:40:40 localhost kernel:  [<c01651af>] wake_up_inode+0xf/0xd0
Nov 12 15:40:40 localhost kernel:  [<c021bf57>] vsnprintf+0x207/0x450
Nov 12 15:40:40 localhost kernel:  [<c021c1f7>] vsprintf+0x27/0x30
Nov 12 15:40:40 localhost kernel:  [<c021c21f>] sprintf+0x1f/0x30
Nov 12 15:40:40 localhost kernel:  [<c0331b1b>] sprintf_stats+0xeb/0x100
Nov 12 15:40:40 localhost kernel:  [<c0331b82>] dev_get_info+0x52/0xc0
Nov 12 15:40:40 localhost kernel:  [<c0178aa1>] proc_file_read+0x1a1/0x1c0
Nov 12 15:40:40 localhost kernel:  [<c014c57c>] vfs_read+0xdc/0x150
Nov 12 15:40:40 localhost kernel:  [<c01108ff>] sys_mmap2+0x9f/0xe0
Nov 12 15:40:40 localhost kernel:  [<c014c83e>] sys_read+0x3e/0x60
Nov 12 15:40:40 localhost kernel:  [<c010b183>] syscall_call+0x7/0xb
Nov 12 15:40:40 localhost kernel:
Nov 12 15:40:40 localhost kernel: bad: scheduling while atomic!
Nov 12 15:40:40 localhost kernel: Call Trace:
Nov 12 15:40:40 localhost kernel:  [<c0118dfb>] schedule+0x30b/0x310
Nov 12 15:40:40 localhost kernel:  [<e1a58bc0>] issuecommand+0x60/0x90 [airo]
Nov 12 15:40:40 localhost kernel:  [<e1a59187>] PC4500_accessrid+0x57/0x90 [airo]
Nov 12 15:40:40 localhost kernel:  [<e1a59242>] PC4500_readrid+0x82/0x160 [airo]Nov 12 15:40:40 localhost kernel:  [<e1a566a9>] readStatsRid+0x29/0x50 [airo]
Nov 12 15:40:40 localhost kernel:  [<e1a56c99>] airo_get_stats+0x29/0xe0 [airo]
Nov 12 15:40:40 localhost kernel:  [<c021bf57>] vsnprintf+0x207/0x450
Nov 12 15:40:40 localhost kernel:  [<c021c1f7>] vsprintf+0x27/0x30
Nov 12 15:40:40 localhost kernel:  [<c021c21f>] sprintf+0x1f/0x30
Nov 12 15:40:40 localhost kernel:  [<c0331b1b>] sprintf_stats+0xeb/0x100
Nov 12 15:40:40 localhost kernel:  [<c0331b82>] dev_get_info+0x52/0xc0
Nov 12 15:40:40 localhost kernel:  [<c0178aa1>] proc_file_read+0x1a1/0x1c0
Nov 12 15:40:40 localhost kernel:  [<c014c57c>] vfs_read+0xdc/0x150
Nov 12 15:40:40 localhost kernel:  [<c01108ff>] sys_mmap2+0x9f/0xe0
Nov 12 15:40:40 localhost kernel:  [<c014c83e>] sys_read+0x3e/0x60
Nov 12 15:40:40 localhost kernel:  [<c010b183>] syscall_call+0x7/0xb
Nov 12 15:40:40 localhost kernel:
Nov 12 15:40:41 localhost kernel: Debug: sleeping function called from illegal context at include/asm/semaphore.h:145
Nov 12 15:40:41 localhost kernel: Call Trace:
Nov 12 15:40:41 localhost kernel:  [<e1a59215>] PC4500_readrid+0x55/0x160 [airo]Nov 12 15:40:41 localhost kernel:  [<e1a5f5fa>] .rodata.str1.1+0x2e2/0x73f [airo]
Nov 12 15:40:41 localhost kernel:  [<e1a566a9>] readStatsRid+0x29/0x50 [airo]
Nov 12 15:40:41 localhost kernel:  [<e1a56c99>] airo_get_stats+0x29/0xe0 [airo]
Nov 12 15:40:41 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:41 localhost kernel:  [<c0163f03>] alloc_inode+0x173/0x1a0
Nov 12 15:40:41 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:41 localhost kernel:  [<c01648d7>] get_new_inode_fast+0x47/0x100
Nov 12 15:40:41 localhost kernel:  [<c0164c40>] iget_locked+0x70/0x80
Nov 12 15:40:41 localhost kernel:  [<c01651af>] wake_up_inode+0xf/0xd0
Nov 12 15:40:41 localhost kernel:  [<c021bf57>] vsnprintf+0x207/0x450
Nov 12 15:40:41 localhost kernel:  [<c021c1f7>] vsprintf+0x27/0x30
Nov 12 15:40:41 localhost kernel:  [<c021c21f>] sprintf+0x1f/0x30
Nov 12 15:40:41 localhost kernel:  [<c0331b1b>] sprintf_stats+0xeb/0x100
Nov 12 15:40:41 localhost kernel:  [<c0331b82>] dev_get_info+0x52/0xc0
Nov 12 15:40:41 localhost kernel:  [<c0178aa1>] proc_file_read+0x1a1/0x1c0
Nov 12 15:40:41 localhost kernel:  [<c014c57c>] vfs_read+0xdc/0x150
Nov 12 15:40:41 localhost kernel:  [<c01108ff>] sys_mmap2+0x9f/0xe0
Nov 12 15:40:41 localhost kernel:  [<c014c83e>] sys_read+0x3e/0x60
Nov 12 15:40:41 localhost kernel:  [<c010b183>] syscall_call+0x7/0xb
Nov 12 15:40:41 localhost kernel:
Nov 12 15:40:42 localhost kernel: Debug: sleeping function called from illegal context at include/asm/semaphore.h:145
Nov 12 15:40:42 localhost kernel: Call Trace:
Nov 12 15:40:42 localhost kernel:  [<e1a59215>] PC4500_readrid+0x55/0x160 [airo]Nov 12 15:40:42 localhost kernel:  [<e1a5f5fa>] .rodata.str1.1+0x2e2/0x73f [airo]
Nov 12 15:40:42 localhost kernel:  [<e1a566a9>] readStatsRid+0x29/0x50 [airo]
Nov 12 15:40:42 localhost kernel:  [<e1a56c99>] airo_get_stats+0x29/0xe0 [airo]
Nov 12 15:40:42 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:42 localhost kernel:  [<c0163f03>] alloc_inode+0x173/0x1a0
Nov 12 15:40:42 localhost kernel:  [<c0176578>] proc_alloc_inode+0x18/0x50
Nov 12 15:40:42 localhost kernel:  [<c01648d7>] get_new_inode_fast+0x47/0x100
Nov 12 15:40:42 localhost kernel:  [<c0164c40>] iget_locked+0x70/0x80
Nov 12 15:40:42 localhost kernel:  [<c01651af>] wake_up_inode+0xf/0xd0
Nov 12 15:40:42 localhost kernel:  [<c021bf57>] vsnprintf+0x207/0x450
Nov 12 15:40:42 localhost kernel:  [<c021c1f7>] vsprintf+0x27/0x30
Nov 12 15:40:42 localhost kernel:  [<c021c21f>] sprintf+0x1f/0x30
Nov 12 15:40:42 localhost kernel:  [<c0331b1b>] sprintf_stats+0xeb/0x100
Nov 12 15:40:42 localhost kernel:  [<c0331b82>] dev_get_info+0x52/0xc0
Nov 12 15:40:42 localhost kernel:  [<c0178aa1>] proc_file_read+0x1a1/0x1c0
Nov 12 15:40:42 localhost kernel:  [<c014c57c>] vfs_read+0xdc/0x150
Nov 12 15:40:42 localhost kernel:  [<c01108ff>] sys_mmap2+0x9f/0xe0
Nov 12 15:40:42 localhost kernel:  [<c014c83e>] sys_read+0x3e/0x60
Nov 12 15:40:42 localhost kernel:  [<c010b183>] syscall_call+0x7/0xb
Nov 12 15:40:42 localhost kernel:

They are debug warnings, not oopses.

hm. IDE sick?

airo_get_stats is called under the read_lock(&dev_base_lock); which was taken in dev_get_info. So it may not call sleeping functions (ie:
down_interruptible()).

It would appear that no netdevice->get_stats() method is allowed to sleep, which seems pretty dumb, IMVHO.

Forwarded to airo maintainer.

Javier :
Most drivers collect stats based on Tx/Rx packets (they just
increment counters). Look at other driver for details. If you really want to get stats out of the firmware, you may use the techinique I used in orinoco for wireless stats, which is to use previous stats and only call async the stat function.

	Have fun...

	Jean