I noticed various slab errors with complete kernel crashes with my USB keyboard/mouse on a 32bit parisc machine with both 2.6.28-rc1 and -rc2. Kernel 2.6.27 was still OK. Linux kernel bootlog shows: --------------- ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver ohci_hcd 0000:00:0e.2: OHCI Host Controller ohci_hcd 0000:00:0e.2: new USB bus registered, assigned bus number 1 ohci_hcd 0000:00:0e.2: irq 1, io mem 0xf2007000 usb usb1: configuration #1 chosen from 1 choice hub 1-0:1.0: USB hub found hub 1-0:1.0: 3 ports detected usb usb1: New USB device found, idVendor=1d6b, idProduct=0001 usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: OHCI Host Controller usb usb1: Manufacturer: Linux 2.6.28-rc2 ohci_hcd usb usb1: SerialNumber: 0000:00:0e.2 uhci_hcd: USB Universal Host Controller Interface driver After sucessful bootup (without any USB devices attached) I get this when I insert a USB keyboard: --------------- usb 1-1: new low speed USB device using ohci_hcd and address 2 usb 1-1: configuration #1 chosen from 1 choice input: SILITEK USB Keyboard and Mouse as /class/input/input0 Slab corruption: size-4096 start=8dd9b000, len=4096 000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 generic-usb 0004:047B:0002.0001: input,hidraw0: USB HID v1.00 Keyboard [SILITEK USB Keyboard and Mouse] on usb-0000:00:0e.2-1/input0 input: SILITEK USB Keyboard and Mouse as /class/input/input1 generic-usb 0003:047B:0002.0002: input,hidraw1: USB HID v1.00 Mouse [SILITEK USB Keyboard and Mouse] on usb-0000:00:0e.2-1/input1 usb 1-1: New USB device found, idVendor=047b, idProduct=0002 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: USB Keyboard and Mouse usb 1-1: Manufacturer: SILITEK Similiar when I insert a mouse: ------------------ usb 1-1: new low speed USB device using ohci_hcd and address 2 usb 1-1: configuration #1 chosen from 1 choice input: Logitech N48 as /class/input/input0 Slab corruption: shmem_inode_cache start=8bd9daa0, len=640 Redzone: 0x0/0x9f911029d74e35b. Last user: [<00000000>](0x0) 000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Prev obj: start=8bd9d870, len=640 Redzone: 0x6b6b6b6b6b6b6b6b/0x0. Last user: [<00000000>](0x0) 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 slab error in cache_alloc_debugcheck_after(): cache `shmem_inode_cache': double free, or memory outside objecn Backtrace: [<101a4e84>] cache_alloc_debugcheck_after+0xd8/0x200 [<101a540c>] kmem_cache_alloc+0x1a0/0x1e8 [<101a26e4>] shmem_alloc_inode+0x18/0x34 [<101be158>] alloc_inode+0x28/0x238 [<101bf204>] new_inode+0x20/0xc0 [<101a0eb8>] shmem_get_inode+0x34/0x1ac [<101a1be0>] shmem_symlink+0x60/0x260 [<101b6034>] vfs_symlink+0x74/0xc8 [<101b6118>] sys_symlinkat+0x90/0xfc [<101190c0>] syscall_exit+0x0/0x28 8bd9da98: redzone 1:0x0, redzone 2:0x9f911029d74e35b Slab corruption: size-4096 start=8bd18000, len=4096 000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 generic-usb 0003:046D:C001.0001: input,hidraw0: USB HID v1.00 Mouse [Logitech N48] on usb-0000:00:0e.2-1/inpu0 usb 1-1: New USB device found, idVendor=046d, idProduct=c001 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: N48 usb 1-1: Manufacturer: Logitech On 2.6.28-rc1 I saw e.g. this: -------------------- usbcore: registered new interface driver usbhid usbhid: v2.6:USB HID core driver usb 1-1: new low speed USB device using ohci_hcd and address 2 usb 1-1: configuration #1 chosen from 1 choice input: Logitech N48 as /class/input/input0 generic-usb 0003:046D:C001.0001: input,hidraw0: USB HID v1.00 Mouse [Logitech N48] on usb-0000:00:0e.2-1/inpu0 usb 1-1: New USB device found, idVendor=046d, idProduct=c001 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: N48 usb 1-1: Manufacturer: Logitech usb 1-2: new low speed USB device using ohci_hcd and address 3 usb 1-2: configuration #1 chosen from 1 choice slab error in cache_alloc_debugcheck_after(): cache `size-512': double free, or memory outside object was oven Backtrace: [<101a5724>] cache_alloc_debugcheck_after+0xd8/0x200 [<101a5cac>] kmem_cache_alloc+0x1a0/0x1e8 [<1042e294>] hid_register_report+0x60/0xc4 [<1042e5f8>] hid_add_field+0x40/0x1a4 [<1042ec40>] hid_parser_main+0x94/0xc4 Helge -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
