Hi, I tried Linux 2.6.12-rc6 recently and got these messages "Debug: sleeping function called from invalid context at mm/slab.c:2093 in_atomic():1, irqs_disabled():1" in dmesg (the current tree from git also shows them, but the ones pasted below are from vanilla rc6). 2.6.11.12 with the same configuration doesn't show these. ... ACPI: PCI Interrupt 0000:00:0d.0[A] -> GSI 16 (level, low) -> IRQ 16 sym0: <895> rev 0x1 at pci 0000:00:0d.0 irq 16 sym0: Tekram NVRAM, ID 7, Fast-40, LVD, parity checking sym0: SCSI BUS has been reset. scsi0 : sym-2.2.0 Vendor: COMPAQ Model: BB018222B8 Rev: B016 Type: Direct-Access ANSI SCSI revision: 02 target0:0:0: tagged command queuing enabled, command queue depth 32. target0:0:0: Beginning Domain Validation Debug: sleeping function called from invalid context at mm/slab.c:2093 in_atomic():1, irqs_disabled():1 [<c0103c4e>] dump_stack+0x1e/0x20 [<c01166f4>] __might_sleep+0xa4/0xc0 [<c014528a>] __kmalloc+0x8a/0x90 [<c014531c>] kcalloc+0x3c/0x70 [<e082ea9d>] sym_alloc_lcb_tags+0x7d/0x140 [sym53c8xx] [<e082e3fb>] sym_get_ccb+0x25b/0x2d0 [sym53c8xx] [<e0825ced>] sym_queue_command+0xbd/0xf0 [sym53c8xx] [<e0826142>] sym53c8xx_queue_command+0x72/0xa0 [sym53c8xx] [<c02b566a>] scsi_dispatch_cmd+0x19a/0x2d0 [<c02bc232>] scsi_request_fn+0x1d2/0x4a0 [<c028d97c>] blk_insert_request+0xbc/0x100 [<c02bab4b>] scsi_insert_special_req+0x3b/0x40 [<c02badee>] scsi_wait_req+0x6e/0xb0 [<c02c10a8>] spi_wait_req+0x48/0x90 [<c02c2525>] spi_dv_device_compare_inquiry+0xc5/0x130 [<c02c285c>] spi_dv_device_internal+0x5c/0x330 [<c02c2c1a>] spi_dv_device+0xea/0x160 [<e0826a1b>] sym53c8xx_slave_configure+0x10b/0x110 [sym53c8xx] [<c02bdd20>] scsi_add_lun+0x340/0x370 [<c02bde3a>] scsi_probe_and_add_lun+0xea/0x230 [<c02be7b3>] scsi_scan_target+0xe3/0x170 [<c02be8d7>] scsi_scan_channel+0x97/0xb0 [<c02be995>] scsi_scan_host_selected+0xa5/0x120 [<c02bea41>] scsi_scan_host+0x31/0x40 [<e0827fab>] sym2_probe+0xfb/0x150 [sym53c8xx] [<c0222a3b>] pci_device_probe_static+0x4b/0x70 [<c0222a9c>] __pci_device_probe+0x3c/0x50 [<c0222adc>] pci_device_probe+0x2c/0x60 [<c028596e>] driver_probe_device+0x2e/0x80 [<c0285ad3>] driver_attach+0x53/0xa0 [<c0286036>] bus_add_driver+0xa6/0xe0 [<c0222d7d>] pci_register_driver+0x5d/0x90 [<e0804032>] sym2_init+0x32/0x51 [sym53c8xx] [<c01361ea>] sys_init_module+0x18a/0x270 [<c0102d95>] syscall_call+0x7/0xb target0:0:0: asynchronous. WIDTH IS 1 target0:0:0: wide asynchronous. target0:0:0: Domain Validation skipping write tests target0:0:0: FAST-40 WIDE SCSI 80.0 MB/s ST (25 ns, offset 31) target0:0:0: Ending Domain Validation SCSI device sda: 35565080 512-byte hdwr sectors (18209 MB) SCSI device sda: drive cache: write back SCSI device sda: 35565080 512-byte hdwr sectors (18209 MB) SCSI device sda: drive cache: write back sda: sda1 sda2 Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 Vendor: PLEXTOR Model: CD-ROM PX-32TS Rev: 1.02 Type: CD-ROM ANSI SCSI revision: 02 target0:0:2: Beginning Domain Validation target0:0:2: asynchronous. target0:0:2: Domain Validation skipping write tests target0:0:2: FAST-20 SCSI 20.0 MB/s ST (50 ns, offset 15) target0:0:2: Ending Domain Validation Vendor: TANDBERG Model: TDC 4222 Rev: =07: Type: Sequential-Access ANSI SCSI revision: 02 target0:0:6: Beginning Domain Validation target0:0:6: asynchronous. target0:0:6: Domain Validation skipping write tests target0:0:6: FAST-5 SCSI 4.8 MB/s ST (208 ns, offset 8) target0:0:6: Ending Domain Validation Vendor: TANDBERG Model: SLR6 Rev: 0404 Type: Sequential-Access ANSI SCSI revision: 02 target0:0:8: Beginning Domain Validation target0:0:8: asynchronous. WIDTH IS 1 target0:0:8: wide asynchronous. target0:0:8: Domain Validation skipping write tests target0:0:8: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 15) target0:0:8: Ending Domain Validation libata version 1.11 loaded. sata_via version 1.1 ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20 (level, low) -> IRQ 20 sata_via(0000:00:0f.0): routed to hard irq line 0 ... -- Matthias Andree - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html