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linux/drivers/tty
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Paul Fulghum fc01d8c61c tty/n_hdlc: fix __might_sleep warning 
Fix __might_sleep warning[1] in tty/n_hdlc.c read due to copy_to_user
call while current is TASK_INTERRUPTIBLE.  This is a false positive
since the code path does not depend on current state remaining
TASK_INTERRUPTIBLE.  The loop breaks out and sets TASK_RUNNING after
calling copy_to_user.

This patch supresses the warning by setting TASK_RUNNING before calling
copy_to_user.

[1] https://syzkaller.appspot.com/bug?id=17d5de7f1fcab794cb8c40032f893f52de899324

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Reported-by: syzbot <syzbot+c244af085a0159d22879@syzkaller.appspotmail.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: stable <stable@vger.kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-18 13:27:54 +01:00
..
hvc
tty: Use of_node_name_{eq,prefix} for node name comparisons
2018-12-17 16:12:17 +01:00
ipwireless
ipwireless: switch to ->[sg]et_serial()
2018-10-13 00:50:31 -04:00
serdev
serdev: document the write functions using kernel-doc
2018-11-27 19:44:21 +01:00
serial
serial: 8250: Fix serial8250 initialization crash
2019-01-18 13:03:47 +01:00
vt
TTY/Serial fixes for 4.20-rc2
2018-11-10 13:32:14 -06:00
amiserial.c
kill TIOCSERGSTRUCT
2018-10-13 00:50:53 -04:00
cyclades.c
cyclades: switch to ->[sg]et_serial()
2018-10-13 00:50:30 -04:00
ehv_bytechan.c
tty: Convert to using %pOFn instead of device_node.name
2018-09-18 16:07:25 +02:00
goldfish.c
headers: separate linux/mod_devicetable.h from linux/platform_device.h
2018-07-07 17:52:26 +02:00
isicom.c
isicom: switch to ->[sg]et_serial()
2018-10-13 00:50:31 -04:00
Kconfig
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2018-04-09 09:04:10 -07:00
Makefile
tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
2018-03-26 15:57:24 +02:00
mips_ejtag_fdc.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
moxa.c
moxa: switch to ->[sg]et_serial()
2018-10-13 00:50:32 -04:00
moxa.h
tty: moxa: Add support for CMSPAR
2017-11-28 15:32:33 +01:00
mxser.c
mxser: switch to ->[sg]et_serial()
2018-10-13 00:50:32 -04:00
mxser.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
n_gsm.c
change semantics of ldisc ->compat_ioctl()
2018-10-13 00:50:53 -04:00
n_hdlc.c
tty/n_hdlc: fix __might_sleep warning
2019-01-18 13:27:54 +01:00
n_null.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
n_r3964.c
tty: Don't block on IO when ldisc change is pending
2018-12-05 12:16:33 +01:00
n_tracerouter.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
n_tracesink.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
n_tracesink.h
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
n_tty.c
tty: Don't block on IO when ldisc change is pending
2018-12-05 12:16:33 +01:00
nozomi.c
tty/nozomi: fix inconsistent indentation
2018-04-25 14:54:26 +02:00
pty.c
pty: fix compat ioctls
2018-10-13 00:50:51 -04:00
rocket_int.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rocket.c
tty: rocket: Fix possible buffer overwrite on register_PCI
2018-08-02 10:11:32 +02:00
rocket.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
synclink_gt.c
synclink_gt(): fix compat_ioctl()
2018-10-13 00:50:52 -04:00
synclink.c
synclink: reduce pointless checks in ->ioctl()
2018-10-13 00:50:43 -04:00
synclinkmp.c
synclink: reduce pointless checks in ->ioctl()
2018-10-13 00:50:43 -04:00
sysrq.c
tty/sysrq: Do not call sync directly from sysrq_do_reset()
2018-12-05 12:02:12 +01:00
tty_audit.c
audit: use current whenever possible
2018-11-26 18:41:21 -05:00
tty_baudrate.c
termios, tty/tty_baudrate.c: fix buffer overrun
2018-11-08 03:36:45 -08:00
tty_buffer.c
tty: wipe buffer.
2018-10-11 19:50:00 +02:00
tty_io.c
tty: Don't hold ldisc lock in tty_reopen() if ldisc present
2019-01-11 17:03:42 +01:00
tty_ioctl.c
move compat handling of tty ioctls to tty_compat_ioctl()
2018-09-14 11:12:17 -04:00
tty_jobctrl.c
tty: add SPDX identifiers to all remaining files in drivers/tty/
2017-11-08 13:08:12 +01:00
tty_ldisc.c
tty/ldsem: Add lockdep asserts for ldisc_sem
2018-12-05 12:16:33 +01:00
tty_ldsem.c
tty/ldsem: Decrement wait_readers on timeouted down_read()
2018-12-05 12:16:33 +01:00
tty_mutex.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tty_port.c
tty: do not set TTY_IO_ERROR flag if console port
2018-11-27 09:58:11 +01:00
vcc.c
tty: vcc: Convert timers to use timer_setup()
2017-11-04 12:01:54 +01:00