AuxXxilium/linux_dsm_epyc7002
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97839ca4b0
linux_dsm_epyc7002/drivers/usb/gadget
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Chao Bi 97839ca4b0 usb: gadget: ffs: race between ffs_epfile_io() and ffs_func_eps_disable() 
ffs_epfile_io() is called from userspace, while ffs_func_eps_disable() might be
called from USB disconnect interrupt, the two functions would run in parallel
but they are not well protected, that epfile->ep would be removed by
ffs_func_eps_disable() during ffs_epfile_io() is referring this pointer, then
it leads to kernel PANIC.

The scenario is as below:

Thread 1                                 Thread 2
   |                                        |
SyS_read                             dwc3_gadget_disconnect_interrupt
   |                                        |
ffs_epfile_read                         reset_config
   |                                        |
ffs_epfile_io                       ffs_func_eps_disable
   |                                        |
 -----                      usb_ep_disable():  epfile->ep->ep->desc = NULL
   |                                        |
usb_ep_align_maybe():                     -----
it refers ep->desc->wMaxPacketSize        -----

Signed-off-by: Chao Bi <chao.bi@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-04-16 10:11:47 -05:00
..
acm_ms.c usb: gadget: fix up some comments about CONFIG_USB_DEBUG 2013-12-20 09:51:24 -06:00
amd5536udc.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
amd5536udc.h
at91_udc.c usb: gadget: at91_udc: fix ep maxpacket initialisation 2014-03-05 09:44:49 -06:00
at91_udc.h usb: gadget: at91_udc: add usb_clk for transition to common clk framework 2013-08-02 15:17:03 +03:00
atmel_usba_udc.c usb: gadget: atmel_usba: fix crashed during stopping when DEBUG is enabled 2014-03-05 14:40:10 -06:00
atmel_usba_udc.h usb: gadget: at91: using USBA_NR_DMAS for DMA channels 2014-02-19 13:47:12 -06:00
audio.c
bcm63xx_udc.c usb: gadget: bcm63xx_udc: fix build failure on DMA channel code 2014-02-18 10:34:54 -06:00
cdc2.c usb: gadget: cdc2: fix conversion to new interface of f_ecm 2013-09-17 10:38:52 -05:00
composite.c usb: gadget: composite: switch over to ERR_CAST() 2014-03-17 16:05:31 -07:00
config.c
configfs.c usb: gadget: configfs: include appropriate header file in configfs.c 2013-12-19 09:27:42 -06:00
configfs.h usb: gadget: configfs: add a method to unregister the gadget 2013-10-01 09:50:22 -05:00
dbgp.c
dummy_hcd.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
epautoconf.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
ether.c usb: gadget: ether: put_usb_function on unbind 2013-07-25 20:35:23 +03:00
f_acm.c usb: acm gadget: Null termintate strings table 2013-08-30 11:10:36 -07:00
f_ecm.c usb: gadget: f_ecm: remove compatibility layer 2013-12-12 13:43:36 -06:00
f_eem.c usb: gadget: f_eem: Staticize eem_alloc 2013-09-17 11:06:50 -05:00
f_fs.c usb: gadget: ffs: race between ffs_epfile_io() and ffs_func_eps_disable() 2014-04-16 10:11:47 -05:00
f_hid.c usb: gadget: factor out alloc_ep_req 2013-11-26 13:41:32 -06:00
f_loopback.c usb: gadget: f_loopback: Fix sparse warning 2013-12-17 13:17:42 -06:00
f_mass_storage.c usb: gadget: f_mass_storage: Fix sparse warning 2013-12-17 13:17:43 -06:00
f_mass_storage.h usb: gadget: f_mass_storage: remove compatibility layer 2013-10-10 10:24:53 -05:00
f_midi.c usb: gadget: Convert to snd_card_new() with a device pointer 2014-02-14 08:14:11 +01:00
f_ncm.c usb: gadget: f_ncm: Fix sparse warning 2013-12-17 13:17:43 -06:00
f_obex.c usb: gadget: f_obex: Fix sparse warning 2013-12-17 13:17:43 -06:00
f_phonet.c usb: gadget: f_phonet: Fix sparse warning 2013-12-17 13:17:44 -06:00
f_rndis.c usb: gadget: rndis: merge u_rndis.ko with usb_f_rndis.ko 2013-12-12 13:43:38 -06:00
f_serial.c usb: gadget: f_serial: Fix sparse warning 2013-12-17 13:17:44 -06:00
f_sourcesink.c usb: gadget: f_sourcesink: Fix sparse warning 2013-12-17 13:17:44 -06:00
f_subset.c usb: gadget: f_subset: switch over to PTR_RET 2014-03-17 16:05:31 -07:00
f_uac1.c usb: gadget: f_uac1: Staticize local functions 2013-08-09 16:34:19 +03:00
f_uac2.c usb: gadget: Convert to snd_card_new() with a device pointer 2014-02-14 08:14:11 +01:00
f_uvc.c Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2013-07-13 12:09:57 -07:00
f_uvc.h usb: gadget: uvc: Fix coding style issues introduced by SS support 2013-03-18 11:18:18 +02:00
fotg210-udc.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
fotg210.h usb: gadget: add Faraday fotg210_udc driver 2013-06-10 17:58:11 +03:00
fsl_mxc_udc.c usb: gadget: use dev_get_platdata() 2013-07-30 11:18:46 +03:00
fsl_qe_udc.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
fsl_qe_udc.h
fsl_udc_core.c usb : gadget : fsl: fix the fault issue on rmmod 2014-04-16 10:11:46 -05:00
fsl_usb2_udc.h
functions.c
fusb300_udc.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
fusb300_udc.h usb: gadget: fusb300_udc: add FUSB300_EPSET0_STL_CLR for clearing EP0 stall 2013-04-02 16:57:24 +03:00
g_ffs.c usb: gadget: g_ffs: convert to new interface of f_fs 2013-12-12 13:43:39 -06:00
g_zero.h usb: gadget: f_sourcesink: add configfs support 2013-11-26 13:47:41 -06:00
gadget_chips.h
gmidi.c
goku_udc.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
goku_udc.h
gr_udc.c usb: gadget: gr_udc: remove some unneeded error handling 2014-02-20 09:16:17 -06:00
gr_udc.h usb: gadget: Add UDC driver for Aeroflex Gaisler GRUSBDC 2013-12-23 19:26:13 -06:00
hid.c usb: gadget: use dev_get_platdata() 2013-07-30 11:18:46 +03:00
inode.c usb: gadget: gadgetfs: Initialize CHIP to NULL before UDC probe 2014-04-16 10:11:46 -05:00
Kconfig usb: gadget: s3c-hsotg: fix build on x86 and other architectures 2014-02-18 10:52:52 -06:00
lpc32xx_udc.c Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2014-04-05 13:20:43 -07:00
m66592-udc.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
m66592-udc.h
Makefile usb: gadget: Add UDC driver for Aeroflex Gaisler GRUSBDC 2013-12-23 19:26:13 -06:00
mass_storage.c usb: gadget: mass_storage: convert to new interface of f_mass_storage 2013-10-10 10:24:10 -05:00
multi.c usb: gadget: fix up some comments about CONFIG_USB_DEBUG 2013-12-20 09:51:24 -06:00
mv_u3d_core.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
mv_u3d.h
mv_udc_core.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
mv_udc.h usb: gadget: mv_udc_core: remove unused clock 2013-04-02 11:42:45 +03:00
ncm.c usb: gadget: ncm: convert to new function interface 2013-06-10 17:12:52 +03:00
ndis.h
net2272.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
net2272.h
net2280.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
net2280.h
nokia.c usb: gadget: nokia: fix error recovery path for optional functions 2013-12-17 13:17:41 -06:00
omap_udc.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
omap_udc.h
pch_udc.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
printer.c usb: patches for v3.15 2014-03-07 16:47:36 -08:00
pxa25x_udc.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
pxa25x_udc.h
pxa27x_udc.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
pxa27x_udc.h
r8a66597-udc.c usb: gadget: add "maxpacket_limit" field to struct usb_ep 2013-12-17 13:17:41 -06:00
r8a66597-udc.h
rndis.c usb: gadget: rndis: Include "u_rndis.h" 2014-04-16 10:11:47 -05:00
rndis.h usb: gadget: rndis: init & exit rndis at module load/unload 2013-06-10 17:58:09 +03:00
s3c2410_udc.c usb: gadget: s3c2410_udc: Fix build error 2014-02-18 10:52:53 -06:00
s3c2410_udc.h
s3c-hsotg.c usb: gadget: s3c-hsotg: add proper suspend/resume support 2014-03-05 14:40:06 -06:00
s3c-hsotg.h usb: gadget: s3c-hsotg: get phy bus width from phy subsystem 2013-12-23 14:31:49 -06:00
s3c-hsudc.c usb: gadget: s3c-hsudc: remove unused label 2014-02-18 10:52:53 -06:00
serial.c usb: gadget: serial: convert to new interface of f_obex 2013-04-03 14:43:36 +03:00
storage_common.c usb: gadget: storage_common: pass filesem to fsg_store_cdrom 2013-10-15 06:52:08 -05:00
storage_common.h usb: gadget: mass storage: fix return of delayed status 2013-11-25 10:56:33 -06:00
tcm_usb_gadget.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-04-12 16:51:08 -07:00
tcm_usb_gadget.h
u_ecm.h usb: gadget: f_ecm: add configfs support 2013-06-10 17:27:54 +03:00
u_eem.h usb: gadget: f_eem: add configfs support 2013-06-10 17:58:00 +03:00
u_ether_configfs.h usb: gadget: add helpers for configfs support for USB Ethernet 2013-06-10 17:15:43 +03:00
u_ether.c usb: gadget: u_ether: move hardware transmit to RX NAPI 2014-03-07 10:03:24 -06:00
u_ether.h usb: gadget: f_rndis: remove compatibility layer 2013-12-12 13:43:37 -06:00
u_f.c usb: gadget: factor out alloc_ep_req 2013-11-26 13:41:32 -06:00
u_f.h usb: gadget: factor out alloc_ep_req 2013-11-26 13:41:32 -06:00
u_fs.h usb: gadget: f_fs: Add flags to descriptors block 2014-03-05 14:40:11 -06:00
u_gether.h usb: gadget: f_subset: add configfs support 2013-06-10 17:58:08 +03:00
u_ncm.h usb: gadget: f_ncm: add configfs support 2013-06-10 17:15:02 +03:00
u_phonet.h usb: gadget: f_phonet: remove compatibility layer 2013-06-10 17:31:55 +03:00
u_rndis.h usb: gadget: rndis: merge u_rndis.ko with usb_f_rndis.ko 2013-12-12 13:43:38 -06:00
u_serial.c tty: Fix low_latency BUG 2014-02-28 16:31:00 -08:00
u_serial.h usb: gadget: nokia: use function framework for ACM 2013-04-03 14:43:20 +03:00
u_uac1.c usb: gadget: u_uac1: add __user annotation 2013-08-09 16:34:13 +03:00
u_uac1.h
udc-core.c usb: gadget: udc-core: Do not report -EISNAM error from gadgetfs 2013-10-04 09:44:43 -05:00
usbstring.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
uvc_queue.c usb: gadget: uvc: Fix error handling in uvc_queue_buffer() 2013-08-09 17:40:54 +03:00
uvc_queue.h usb: gadget/uvc: Port UVC webcam gadget to use videobuf2 framework 2013-04-02 11:42:48 +03:00
uvc_v4l2.c usb: gadget/uvc: Add support for 'get_unmapped_area' for MMUless architectures 2013-04-02 11:42:49 +03:00
uvc_video.c usb: gadget/uvc: Port UVC webcam gadget to use videobuf2 framework 2013-04-02 11:42:48 +03:00
uvc.h [media] f_uvc: add v4l2_device and replace parent with v4l2_dev 2013-06-21 11:04:47 -03:00
webcam.c
zero.c usb: gadget: zero: Fix SuperSpeed enumeration for alternate setting 1 2014-04-16 10:11:45 -05:00