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63f4c34561
linux/drivers/tty
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Tony Lindgren 63f4c34561 serial: core: Disable uart_start() on uart_remove_one_port() 
While rebinding a uart device in a loop I noticed we may see a tx related
race on uart_remove_one_port():

uart_write from n_tty_write
n_tty_write from file_tty_write.constprop.0
file_tty_write.constprop.0 from vfs_write
vfs_write from ksys_write
ksys_write from ret_fast_syscall

Let's disallow tx on port->UPF_DEAD. This flag gets set before we start
tearing down the port in uart_remove_one_port().

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230419115423.59957-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-20 13:43:44 +02:00
..
hvc xen: branch for v6.3-rc4 2023-03-24 09:44:43 -07:00
ipwireless
serdev serdev: Set fwnode for serdev devices 2023-03-09 17:09:56 +01:00
serial serial: core: Disable uart_start() on uart_remove_one_port() 2023-04-20 13:43:44 +02:00
vt tty: vt: protect KD_FONT_OP_GET_TALL from unbound access 2023-03-09 17:56:56 +01:00
amiserial.c tty: Convert hw_stopped in tty_struct to bool 2023-03-17 15:01:09 +01:00
ehv_bytechan.c tty: evh_bytechan: Replace NO_IRQ by 0 2022-11-02 08:10:42 +01:00
goldfish.c tty: goldfish: Fix free_irq() on remove 2022-06-10 13:31:31 +02:00
Kconfig tty: Fix typo in LEGACY_TIOCSTI Kconfig description 2023-04-05 19:36:00 +02:00
Makefile
mips_ejtag_fdc.c serial: Convert SERIAL_XMIT_SIZE to UART_XMIT_SIZE 2022-06-27 14:41:31 +02:00
moxa.c tty: moxa: Rename dtr/rts parameters/variables to active 2023-01-19 16:04:35 +01:00
mxser.c tty: Convert hw_stopped in tty_struct to bool 2023-03-17 15:01:09 +01:00
n_gsm.c tty: n_gsm: fix redundant assignment of gsm->encoding 2023-04-20 13:27:10 +02:00
n_hdlc.c tty: n_hdlc: remove HDLC_MAGIC 2022-09-22 16:12:34 +02:00
n_null.c
n_tty.c n_tty: Reindent if condition 2023-03-17 15:01:09 +01:00
nozomi.c
pty.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
rpmsg_tty.c tty: rpmsg: Fix race condition releasing tty port 2022-01-26 14:50:26 +01:00
synclink_gt.c tty: synclink_gt: don't allocate and pass dummy flags 2023-04-20 13:32:53 +02:00
sysrq.c treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
tty_audit.c
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: Convert tty_buffer flags to bool 2022-11-09 13:02:16 +01:00
tty_io.c tty: Prevent writing chars during tcsetattr TCSADRAIN/FLUSH 2023-03-29 10:55:53 +02:00
tty_ioctl.c tty: Prevent writing chars during tcsetattr TCSADRAIN/FLUSH 2023-03-29 10:55:53 +02:00
tty_jobctrl.c signal: Replace __group_send_sig_info with send_signal_locked 2022-05-11 14:33:17 -05:00
tty_ldisc.c tty: tty_ldisc: Remove the ret variable 2023-03-09 17:11:18 +01:00
tty_ldsem.c tty/ldsem: Fix syntax errors in comments 2021-12-21 09:15:49 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: Convert ->dtr_rts() to take bool argument 2023-01-19 16:04:35 +01:00
tty.h tty: Prevent writing chars during tcsetattr TCSADRAIN/FLUSH 2023-03-29 10:55:53 +02:00
ttynull.c
vcc.c termios: start unifying non-UAPI parts of asm/termios.h 2022-09-09 10:44:34 +02:00