Re: 2.4.39 "Sleeping function called from illegal context at slab.c:1374"

[Andreas Boman]

* Mike Anderson ([e-mail]) wrote:
> Andrew Morton [[e-mail]] wrote:
> > That is known - sg_init() is blatantly calling vmalloc under
> > write_lock_irqsave().
> 
> I had not already seen a patch for this.
> 
> During Douglas Gilbert's time-off he connects when he can so it maybe a
> bit until he can address this. 
> 
> In the interim a quick patch below should fix the problem, and still
> provide for safe additions.
> 
> I have done just minor testing on 2.5.40 using the sg_utils.

This seems to have fixed that particular warning, and got me a new one:

 Debug: sleeping function called from illegal context at /usr/src/linux-2.5.40/include/asm/semaphore.h:119
 debb7e38 debb7e5c c016f69b c0356860 00000077 df354680 e0907020 e0907028 
        e0907020 debb7e78 c0241e06 e09070bc dfd563c8 e0907020 e0907028 debb6000 
        debb7e94 c0240348 e0907020 c01f483f e0907020 00000000 00000000 debb7ee4 
 Call Trace:
  [driverfs_create_dir+75/240]driverfs_create_dir+0x4b/0xf0
  [device_make_dir+70/144]device_make_dir+0x46/0x90
  [device_register+184/368]device_register+0xb8/0x170
  [sprintf+31/48]sprintf+0x1f/0x30
  [<e08fe86a>]sg_attach+0x23a/0x450 [sg]
  [<e09023ce>].rodata.str1.1+0x6a/0x2b0 [sg]
  [<e0902387>].rodata.str1.1+0x23/0x2b0 [sg]
  [<e0903ca0>]sg_fops+0x0/0x58 [sg]
  [<e0903be0>]sg_template+0x0/0x94 [sg]
  [scsi_register_device+269/336]scsi_register_device+0x10d/0x150
  [<e08fecd3>]init_sg+0x23/0x60 [sg]
  [<e0903be0>]sg_template+0x0/0x94 [sg]
  [sys_init_module+1311/1648]sys_init_module+0x51f/0x670
  [<e08fc060>]E __insmod_sg_O/lib/modules/2.5.40anb4/kernel/drivers/scsi/sg.o_M3D9B4C96_V132392+0x60/0x80 [sg]
  [<e0902614>]__ksymtab+0x0/0x28 [sg]
  [<e08fc060>]E __insmod_sg_O/lib/modules/2.5.40anb4/kernel/drivers/scsi/sg.o_M3D9B4C96_V132392+0x60/0x80 [sg]
  [syscall_call+7/11]syscall_call+0x7/0xb

modprobe cdrom and sr_mod follow without problems, but  then when i modprobe
ide-scsi:

 scsi1 : SCSI host adapter emulation for IDE ATAPI devices
 scsi_eh_offline_sdevs: Device set offline - notready or command retry failedafter error recovery: host1 channel 0 id 0 lun 0
   Vendor:           Model:                   Rev:     
   Type:   Direct-Access                      ANSI SCSI revision: 00
 hda: lost interrupt
 ide-scsi: (IO,CoD) != (0,1) while issuing a packet command
 hda: DMA disabled
 hda: ATAPI reset complete

and the box is dead again.