mirror of
https://github.com/torvalds/linux
synced 2024-10-07 20:05:15 +00:00
7ab8716713
Tegra USB controllers seem to issue DMA in full 32-bit words only and thus
may overwrite unevenly-sized buffers. One such occurrence is detected by
SLUB when receiving a reply to a 1-byte buffer (below). Fix this by
allocating a bounce buffer also for buffers with sizes not a multiple of 4.
=============================================================================
BUG kmalloc-64 (Tainted: G B ): kmalloc Redzone overwritten
-----------------------------------------------------------------------------
0x8555cd02-0x8555cd03 @offset=3330. First byte 0x0 instead of 0xcc
Allocated in usb_get_status+0x2b/0xac age=1 cpu=3 pid=41
__kmem_cache_alloc_node+0x12f/0x1e4
__kmalloc+0x33/0x8c
usb_get_status+0x2b/0xac
hub_probe+0x5e9/0xcec
usb_probe_interface+0xbf/0x21c
really_probe+0xa5/0x2c4
__driver_probe_device+0x75/0x174
driver_probe_device+0x31/0x94
__device_attach_driver+0x65/0xc0
bus_for_each_drv+0x4b/0x74
__device_attach+0x69/0x120
bus_probe_device+0x65/0x6c
device_add+0x48b/0x5f8
usb_set_configuration+0x37b/0x6b4
usb_generic_driver_probe+0x37/0x68
usb_probe_device+0x35/0xb4
Slab 0xbf622b80 objects=21 used=18 fp=0x8555cdc0 flags=0x800(slab|zone=0)
Object 0x8555cd00 @offset=3328 fp=0x00000000
Redzone 8555ccc0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555ccd0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555cce0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555ccf0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd00: 01 00 00 00 cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd10: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd20: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd30: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555cd40: cc cc cc cc ....
Padding 8555cd74: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
CPU: 3 PID: 41 Comm: kworker/3:1 Tainted: G B 6.6.0-rc1mq-00118-g59786f827ea1 #1115
Hardware name: NVIDIA Tegra SoC (Flattened Device Tree)
Workqueue: usb_hub_wq hub_event
[<8010ca28>] (unwind_backtrace) from [<801090a5>] (show_stack+0x11/0x14)
[<801090a5>] (show_stack) from [<805da2fb>] (dump_stack_lvl+0x4d/0x7c)
[<805da2fb>] (dump_stack_lvl) from [<8026464f>] (check_bytes_and_report+0xb3/0xe4)
[<8026464f>] (check_bytes_and_report) from [<802648e1>] (check_object+0x261/0x290)
[<802648e1>] (check_object) from [<802671b1>] (free_to_partial_list+0x105/0x3f8)
[<802671b1>] (free_to_partial_list) from [<80268613>] (__kmem_cache_free+0x103/0x128)
[<80268613>] (__kmem_cache_free) from [<80425a67>] (usb_get_status+0x73/0xac)
[<80425a67>] (usb_get_status) from [<80421b31>] (hub_probe+0x5e9/0xcec)
[<80421b31>] (hub_probe) from [<80428bbb>] (usb_probe_interface+0xbf/0x21c)
[<80428bbb>] (usb_probe_interface) from [<803ee13d>] (really_probe+0xa5/0x2c4)
[<803ee13d>] (really_probe) from [<803ee3d1>] (__driver_probe_device+0x75/0x174)
[<803ee3d1>] (__driver_probe_device) from [<803ee501>] (driver_probe_device+0x31/0x94)
usb 1-1: device descriptor read/8, error -71
Fixes:
|
||
|---|---|---|
| .. | ||
| atm | ||
| c67x00 | ||
| cdns3 | ||
| chipidea | ||
| class | ||
| common | ||
| core | ||
| dwc2 | ||
| dwc3 | ||
| early | ||
| fotg210 | ||
| gadget | ||
| host | ||
| image | ||
| isp1760 | ||
| misc | ||
| mon | ||
| mtu3 | ||
| musb | ||
| phy | ||
| renesas_usbhs | ||
| roles | ||
| serial | ||
| storage | ||
| typec | ||
| usbip | ||
| Kconfig | ||
| Makefile | ||
| usb-skeleton.c | ||