Juliana Rodrigueiro 07efe13b95 isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack ... [ Upstream commit d8a1de3d5b ] Since linux 4.9 it is not possible to use buffers on the stack for DMA transfers. During usb probe the driver crashes with "transfer buffer is on stack" message. This fix k-allocates a buffer to be used on "read_reg_atomic", which is a macro that calls "usb_control_msg" under the hood. Kernel 4.19 backtrace: usb_hcd_submit_urb+0x3e5/0x900 ? sched_clock+0x9/0x10 ? log_store+0x203/0x270 ? get_random_u32+0x6f/0x90 ? cache_alloc_refill+0x784/0x8a0 usb_submit_urb+0x3b4/0x550 usb_start_wait_urb+0x4e/0xd0 usb_control_msg+0xb8/0x120 hfcsusb_probe+0x6bc/0xb40 [hfcsusb] usb_probe_interface+0xc2/0x260 really_probe+0x176/0x280 driver_probe_device+0x49/0x130 __driver_attach+0xa9/0xb0 ? driver_probe_device+0x130/0x130 bus_for_each_dev+0x5a/0x90 driver_attach+0x14/0x20 ? driver_probe_device+0x130/0x130 bus_add_driver+0x157/0x1e0 driver_register+0x51/0xe0 usb_register_driver+0x5d/0x120 ? 0xf81ed000 hfcsusb_drv_init+0x17/0x1000 [hfcsusb] do_one_initcall+0x44/0x190 ? free_unref_page_commit+0x6a/0xd0 do_init_module+0x46/0x1c0 load_module+0x1dc1/0x2400 sys_init_module+0xed/0x120 do_fast_syscall_32+0x7a/0x200 entry_SYSENTER_32+0x6b/0xbe Signed-off-by: Juliana Rodrigueiro <juliana.rodrigueiro@intra2net.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-08-29 08:28:35 +02:00
..
capi	isdn: fix kernel-infoleak in capi_unlocked_ioctl	2019-01-09 17:38:31 +01:00
divert	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
gigaset	isdn: bas_gigaset: use usb_fill_int_urb() properly	2019-05-16 19:41:31 +02:00
hardware	isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack	2019-08-29 08:28:35 +02:00
hisax	isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()	2019-02-12 19:47:18 +01:00
hysdn	isdn: mark expected switch fall-throughs	2018-07-04 22:17:32 +09:00
i4l	isdn: i4l: isdn_tty: Fix some concurrency double-free bugs	2019-02-27 10:08:55 +01:00
isdnloop
mISDN	mISDN: make sure device name is NUL terminated	2019-06-22 08:15:16 +02:00
Kconfig
Makefile