Jia-Ju Bai 5cc09cfdc3 net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive() ... [ Upstream commit b7ac893652 ] The kernel may sleep while holding a spinlock. The function call path (from bottom to top) in Linux 4.19 is: net/nfc/nci/uart.c, 349: nci_skb_alloc in nci_uart_default_recv_buf net/nfc/nci/uart.c, 255: (FUNC_PTR)nci_uart_default_recv_buf in nci_uart_tty_receive net/nfc/nci/uart.c, 254: spin_lock in nci_uart_tty_receive nci_skb_alloc(GFP_KERNEL) can sleep at runtime. (FUNC_PTR) means a function pointer is called. To fix this bug, GFP_KERNEL is replaced with GFP_ATOMIC for nci_skb_alloc(). This bug is found by a static analysis tool STCheck written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-12-31 16:34:38 +01:00
..
hci	NFC: Fix possible memory corruption when handling SHDLC I-Frame commands	2018-09-18 19:55:01 -07:00
nci	net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive()	2019-12-31 16:34:38 +01:00
af_nfc.c	net: socket: mark socket protocol handler structs as const	2017-05-16 11:54:07 -04:00
core.c	NFC: Convert timers to use timer_setup()	2017-11-06 01:12:10 +01:00
digital.h
digital_core.c	NFC: digital: Abort cmd when deactivating target	2017-11-10 00:03:39 +01:00
digital_dep.c	NFC: digital: NFC-DEP Target WT(nfcdep,max) is now 14	2017-06-23 00:19:59 +02:00
digital_technology.c	NFC: digital: NFC-A SEL_RES must be one byte	2017-06-23 00:19:59 +02:00
Kconfig
llcp.h	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
llcp_commands.c	net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails	2019-03-10 07:17:18 +01:00
llcp_core.c	net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails	2019-03-10 07:17:18 +01:00
llcp_sock.c	net: use skb_queue_empty_lockless() in poll() handlers	2019-11-10 11:27:48 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
netlink.c	nfc: netlink: fix double device reference drop	2019-11-12 19:20:30 +01:00
nfc.h	nfc: netlink: HCI event connectivity implementation	2015-12-29 19:06:20 +01:00
rawsock.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00