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linux/drivers/tty
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Tetsuo Handa 3d63b7e4ae n_tty: Fix stall at n_tty_receive_char_special(). 
syzbot is reporting stalls at n_tty_receive_char_special() [1]. This is
because comparison is not working as expected since ldata->read_head can
change at any moment. Mitigate this by explicitly masking with buffer size
when checking condition for "while" loops.

[1] https://syzkaller.appspot.com/bug?id=3d7481a346958d9469bebbeb0537d5f056bdd6e8

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+18df353d7540aa6b5467@syzkaller.appspotmail.com>
Fixes: bc5a5e3f45d04784 ("n_tty: Don't wrap input buffer indices at buffer size")
Cc: stable <stable@vger.kernel.org>
Cc: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-28 21:30:16 +09:00
..
hvc
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
ipwireless
tty: ipwireless: Replace GFP_ATOMIC with GFP_KERNEL in ipwireless_network_create
2018-04-23 10:57:06 +02:00
serdev
serdev: Fix typo in serdev_device_alloc
2018-03-14 15:02:45 +01:00
serial
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
vt
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
amiserial.c
tty: replace ->proc_fops with ->proc_show
2018-05-16 07:24:30 +02:00
cyclades.c
tty: replace ->proc_fops with ->proc_show
2018-05-16 07:24:30 +02:00
ehv_bytechan.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
goldfish.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
isicom.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
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
tty: moxa: Add support for CMSPAR
2017-11-28 15:32:33 +01:00
moxa.h
tty: moxa: Add support for CMSPAR
2017-11-28 15:32:33 +01:00
mxser.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
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
Merge 4.17-rc3 into tty-next
2018-04-30 05:14:55 -07:00
n_hdlc.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
n_null.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
n_r3964.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
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
n_tty: Fix stall at n_tty_receive_char_special().
2018-06-28 21:30:16 +09:00
nozomi.c
tty/nozomi: fix inconsistent indentation
2018-04-25 14:54:26 +02:00
pty.c
tty: Fix data race in tty_insert_flip_string_fixed_flag
2018-05-14 13:52:35 +02:00
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
treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
2017-11-21 15:57:05 -08:00
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
tty: replace ->proc_fops with ->proc_show
2018-05-16 07:24:30 +02:00
synclink.c
tty: replace ->proc_fops with ->proc_show
2018-05-16 07:24:30 +02:00
synclinkmp.c
tty: replace ->proc_fops with ->proc_show
2018-05-16 07:24:30 +02:00
sysrq.c
fs: add ksys_sync() helper; remove in-kernel calls to sys_sync()
2018-04-02 20:16:05 +02:00
tty_audit.c
tty: Remove redundant license text
2017-11-08 13:08:12 +01:00
tty_baudrate.c
tty: add SPDX identifiers to all remaining files in drivers/tty/
2017-11-08 13:08:12 +01:00
tty_buffer.c
tty: add SPDX identifiers to all remaining files in drivers/tty/
2017-11-08 13:08:12 +01:00
tty_io.c
vfs: change inode times to use struct timespec64
2018-06-05 16:57:31 -07:00
tty_ioctl.c
tty: add missing const to termios hw-change helper
2018-05-22 10:08:05 +02:00
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
proc: introduce proc_create_seq{,_data}
2018-05-16 07:23:35 +02:00
tty_ldsem.c
tty: Remove redundant license text
2017-11-08 13:08:12 +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: add SPDX identifiers to all remaining files in drivers/tty/
2017-11-08 13:08:12 +01:00
vcc.c
tty: vcc: Convert timers to use timer_setup()
2017-11-04 12:01:54 +01:00