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08b33249d8
linux/drivers/tty
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Dongxing Zhang 08b33249d8 tty/vt: Fix the memory leak in visual_init 
If vc->vc_uni_pagedir_loc is not NULL, its refcount needs to be
decreased before vc_uni_pagedir_loc is re-assigned.

unreferenced object 0xffff88002cdd13b0 (size 512):
  comm "setfont", pid 503, jiffies 4294896503 (age 722.828s)
  hex dump (first 32 bytes):
    40 92 61 2b 00 88 ff ff 00 00 00 00 00 00 00 00  @.a+............
    00 00 00 00 00 00 00 00 a0 ad 61 2b 00 88 ff ff  ..........a+....
  backtrace:
    [<ffffffff817b755e>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff811d4898>] kmem_cache_alloc_trace+0x1c8/0x240
    [<ffffffff814ae7d3>] con_do_clear_unimap.isra.2+0x83/0xe0
    [<ffffffff814ae9b2>] con_clear_unimap+0x22/0x40
    [<ffffffff814a8db8>] vt_ioctl+0xeb8/0x1170
    [<ffffffff8149b458>] tty_ioctl+0x208/0xca0
    [<ffffffff81207858>] do_vfs_ioctl+0x2f8/0x510
    [<ffffffff81207af1>] SyS_ioctl+0x81/0xa0
    [<ffffffff817ca2b2>] system_call_fastpath+0x16/0x75
    [<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88002b619240 (size 256):
  comm "setfont", pid 503, jiffies 4294896503 (age 722.828s)
  hex dump (first 32 bytes):
    90 bc 84 d5 00 88 ff ff 58 85 84 d5 00 88 ff ff  ........X.......
    88 ac 84 d5 00 88 ff ff e0 b1 84 d5 00 88 ff ff  ................
  backtrace:
    [<ffffffff817b755e>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff811d4898>] kmem_cache_alloc_trace+0x1c8/0x240
    [<ffffffff814ae286>] con_insert_unipair+0x86/0x170
    [<ffffffff814af107>] con_set_unimap+0x1b7/0x280
    [<ffffffff814a8d65>] vt_ioctl+0xe65/0x1170
    [<ffffffff8149b458>] tty_ioctl+0x208/0xca0
    [<ffffffff81207858>] do_vfs_ioctl+0x2f8/0x510
    [<ffffffff81207af1>] SyS_ioctl+0x81/0xa0
    [<ffffffff817ca2b2>] system_call_fastpath+0x16/0x75
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: Dongxing Zhang <dongxing.zhang@intel.com>
Signed-off-by: Xiaoming Wang <xiaoming.wang@intel.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-23 15:11:08 -07:00
..
hvc xen: features and cleanups for 4.2-rc0 2015-07-01 11:53:46 -07:00
ipwireless Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
serial serial: amba-pl011: Fix devm_ioremap_resource return value check 2015-07-23 15:05:53 -07:00
vt tty/vt: Fix the memory leak in visual_init 2015-07-23 15:11:08 -07:00
amiserial.c tty: amiserial.c: move assignment out of if () block 2015-05-10 19:04:16 +02:00
bfin_jtag_comm.c TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation 2015-03-07 03:44:14 +01:00
cyclades.c tty: remove buf parameter from tty_name() 2015-05-06 22:26:57 +02:00
ehv_bytechan.c tty: remove unused variable sprop 2015-02-03 15:52:13 -08:00
goldfish.c staging: goldfish: Fix pointer cast for 32 bits 2015-05-31 11:40:14 +09:00
isicom.c tty/isicom: fix big-endian compile warning 2015-02-02 10:11:25 -08:00
Kconfig ttyFDC: Implement KGDB IO operations. 2015-03-31 12:04:13 +02:00
Makefile TTY: Add MIPS EJTAG Fast Debug Channel TTY driver 2015-03-31 12:04:12 +02:00
metag_da.c tty/metag_da: Avoid module_init/module_exit in non-modular code 2015-06-16 14:12:31 -04:00
mips_ejtag_fdc.c ttyFDC: Fix to use native endian MMIO reads 2015-05-26 16:46:52 +02:00
moxa.c TTY: fix decimal printf format specifiers prefixed with 0x 2014-09-08 15:51:35 -07:00
moxa.h
mxser.c
mxser.h
n_gsm.c tty: Spelling s/reseved/reserved/ 2015-05-24 13:06:08 -07:00
n_hdlc.c pty: Fix input race when closing 2015-05-10 19:26:37 +02:00
n_r3964.c
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c n_tty: signal and flush atomically 2015-07-23 15:05:53 -07:00
nozomi.c drivers/tty/nozomi.c: rename CONFIG_MAGIC 2015-05-10 19:19:06 +02:00
pty.c pty: Fix input race when closing 2015-05-10 19:26:37 +02:00
rocket_int.h
rocket.c TTY: fix misspelling of current function in string 2015-01-09 14:38:15 -08:00
rocket.h tty: rocket: fix comment of ROCKET_SPD_HI 2015-05-24 12:49:16 -07:00
synclink_gt.c tty: synclink_gt.c: move assignment out of if () block 2015-05-10 19:04:18 +02:00
synclink.c tty: synclink.c: move assignment out of if () block 2015-05-10 19:04:18 +02:00
synclinkmp.c tty: synclinkmp.c: move assignment out of if () block 2015-05-10 19:04:18 +02:00
sysrq.c Minor merge needed, due to function move. 2015-07-01 10:49:25 -07:00
tty_audit.c
tty_buffer.c Merge 4.1-rc4 into tty-next 2015-05-18 14:08:58 -07:00
tty_io.c tty: remove buf parameter from tty_name() 2015-05-06 22:26:57 +02:00
tty_ioctl.c tty: remove buf parameter from tty_name() 2015-05-06 22:26:57 +02:00
tty_ldisc.c tty: remove buf parameter from tty_name() 2015-05-06 22:26:57 +02:00
tty_ldsem.c tty: tty_ldsem.c: move assignment out of if () block 2015-05-10 19:04:18 +02:00
tty_mutex.c tty: Make lock subclasses available for other tty locks 2015-02-02 10:11:27 -08:00
tty_port.c tty: Deletion of unnecessary checks before two function calls 2014-11-26 19:35:49 -08:00