Re: 2.6.0-test1: illegal context call in slab.c

From: Roger Luethi (
Date: Mon Jul 21 2003 - 17:16:36 EST

On Mon, 21 Jul 2003 11:28:55 -0400, Douglas J Hunley wrote:
> Issues with the kernel? Or is it the nvidia module? Thanks.

Not nvidia this time. It seems to be the kernel proper. My vanilla kernel
gave me the same warning:

Debug: sleeping function called from illegal context at mm/slab.c:1811
Call Trace:
 [<c011e85c>] __might_sleep+0x5c/0x60
 [<c0151204>] kmem_cache_alloc+0x184/0x190
 [<c026e098>] alloc_skb+0x48/0xf0
 [<c026e073>] alloc_skb+0x23/0xf0
 [<c026d596>] sock_alloc_send_pskb+0xd6/0x200
 [<c026d6ee>] sock_alloc_send_skb+0x2e/0x30
 [<fa8bcf20>] unix_dgram_sendmsg+0x160/0x5c0 [unix]
 [<c026a24d>] sock_aio_write+0xbd/0xe0
 [<c016ef59>] do_sync_write+0x89/0xc0
 [<c0238ea7>] taskfile_output_data+0x77/0x90
 [<c0239f81>] task_out_intr+0x181/0x260
 [<c0239e00>] task_out_intr+0x0/0x260
 [<c016f077>] vfs_write+0xe7/0x120
 [<c016f14f>] sys_write+0x3f/0x60
 [<c0109eff>] syscall_call+0x7/0xb

bad: scheduling while atomic!
Call Trace:
 [<c011c510>] schedule+0x500/0x510
 [<c016f14f>] sys_write+0x3f/0x60
 [<c0109f26>] work_resched+0x5/0x16

Unable to handle kernel paging request at virtual address 491f3b50
 printing eip:
*pde = 37455067
*pte = 00000000
Oops: 0004 [#1]
CPU: 0
EIP: 0073:[<491f3b50>] Not tainted
EFLAGS: 00010246
EIP is at 0x491f3b50
eax: 0804d2a6 ebx: 0000005b ecx: 000003d8 edx: 00000008
esi: 0000031b edi: 0804d708 ebp: 00000383 esp: bfff756c
ds: 007b es: 007b ss: 007b
Process klogd (pid: 3138, threadinfo=f7452000 task=f7be0740)
 <6>note: klogd[3138] exited with preempt_count 1
bad: scheduling while atomic!
Call Trace:
 [<c011c510>] schedule+0x500/0x510
 [<c0159a61>] unmap_page_range+0x41/0x70
 [<c0159c70>] unmap_vmas+0x1e0/0x340
 [<c015f259>] exit_mmap+0xc9/0x2a0
 [<c011f5c4>] mmput+0xa4/0x130
 [<c0125655>] do_exit+0x265/0x990
 [<c010a82c>] die+0x1fc/0x200
 [<c011a204>] do_page_fault+0x2c4/0x4aa
 [<c016f056>] vfs_write+0xc6/0x120
 [<c011c1fe>] schedule+0x1ee/0x510
 [<c016f14f>] sys_write+0x3f/0x60
 [<c0119f40>] do_page_fault+0x0/0x4aa
 [<c010a0a9>] error_code+0x2d/0x38

Linux 2.6.0-test1, gcc 3.2.3
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This archive was generated by hypermail 2b29 : Wed Jul 23 2003 - 22:00:45 EST