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Date: Thu, 15 Nov 2012 09:49:47 +0100 From: Jiri Slaby <jslaby@...e.cz> To: gregkh@...uxfoundation.org Cc: alan@...ux.intel.com, linux-kernel@...r.kernel.org, jirislaby@...il.com Subject: [PATCH 0/9] TTY: memory leaks patchset I introduced severe memory leaks by (still -next) commit "TTY: move tty buffers to tty_port", especially in the pty driver. I did not realize that tty_port is not destroyed as I had imagined. Most of the drivers simply do not use the tty_port-reference-counted model. In this series, some are converted to reference counting -- those which already do reference counting with their own kref. The rest is just forced to call a newly added function which properly destroys the tty_port. Plus there is one patch to fix isicom accessing unsafe tty pointer. This series should go upstream regardless "TTY: move tty buffers to tty_port" if we decide to revert that commit due to the reported warnings I cannot reproduce and neither catch the root cause. At least while trying to reproduce those I found the leaks fixed here. Jiri Slaby (9): TTY: isicom, stop using port->tty TTY: pty, fix tty buffers leak ISDN: capi, use kref from tty_port MMC: sdio_uart, remove unused member from sdio_uart_port MMC: sdio, use kref from tty_port TTY: n_gsm, use kref from tty_port TTY: introduce tty_port_destroy TTY: isicom, fix tty buffers memory leak TTY: call tty_port_destroy in the rest of drivers arch/alpha/kernel/srmcons.c | 5 ++++- arch/ia64/hp/sim/simserial.c | 1 + arch/m68k/emu/nfcon.c | 6 ++++-- arch/parisc/kernel/pdc_cons.c | 5 +++-- arch/um/drivers/line.c | 2 ++ arch/xtensa/platforms/iss/console.c | 1 + drivers/char/pcmcia/synclink_cs.c | 5 ++++- drivers/char/ttyprintk.c | 4 +++- drivers/isdn/capi/capi.c | 34 ++++++++++++++++----------------- drivers/isdn/gigaset/common.c | 10 ++++++---- drivers/isdn/i4l/isdn_tty.c | 4 ++++ drivers/misc/pti.c | 7 +++++-- drivers/mmc/card/sdio_uart.c | 24 +++++++++++------------ drivers/net/usb/hso.c | 5 +++-- drivers/s390/char/con3215.c | 1 + drivers/s390/char/sclp_tty.c | 4 +++- drivers/s390/char/sclp_vt220.c | 2 ++ drivers/s390/char/tty3270.c | 2 ++ drivers/staging/ccg/u_serial.c | 5 ++++- drivers/staging/dgrp/dgrp_specproc.c | 2 ++ drivers/staging/dgrp/dgrp_tty.c | 4 +++- drivers/staging/ipack/devices/ipoctal.c | 2 ++ drivers/tty/amiserial.c | 2 ++ drivers/tty/bfin_jtag_comm.c | 6 ++++-- drivers/tty/cyclades.c | 8 +++++--- drivers/tty/ehv_bytechan.c | 2 ++ drivers/tty/hvc/hvsi.c | 1 + drivers/tty/ipwireless/tty.c | 1 + drivers/tty/isicom.c | 23 ++++++++++++---------- drivers/tty/moxa.c | 4 ++++ drivers/tty/mxser.c | 25 ++++++++++++++++-------- drivers/tty/n_gsm.c | 11 +++++------ drivers/tty/nozomi.c | 13 +++++++++---- drivers/tty/pty.c | 2 +- drivers/tty/rocket.c | 2 ++ drivers/tty/serial/68328serial.c | 2 ++ drivers/tty/serial/ifx6x60.c | 5 ++++- drivers/tty/serial/kgdb_nmi.c | 2 ++ drivers/tty/serial/serial_core.c | 6 ++++++ drivers/tty/synclink.c | 1 + drivers/tty/synclink_gt.c | 5 ++++- drivers/tty/synclinkmp.c | 5 ++++- drivers/tty/tty_port.c | 18 +++++++++++++++-- drivers/tty/vt/vt.c | 5 ++++- drivers/usb/gadget/u_serial.c | 5 ++++- drivers/usb/serial/usb-serial.c | 1 + include/linux/tty.h | 1 + net/irda/ircomm/ircomm_tty.c | 1 + 48 files changed, 202 insertions(+), 90 deletions(-) -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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