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| author | Jiri Slaby <jslaby@suse.cz> | 2011-03-23 10:48:36 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-19 14:43:01 -0700 |
| commit | a9dccddb60913056bcadaeeacfe0395447fd2472 (patch) | |
| tree | 8f1fccdba560437d52040677347e7c2f40c18626 | |
| parent | 6716671d8c1c07a8072098764d1b7cbfef7412ad (diff) | |
| download | linux-stable-a9dccddb60913056bcadaeeacfe0395447fd2472.tar.gz linux-stable-a9dccddb60913056bcadaeeacfe0395447fd2472.tar.bz2 linux-stable-a9dccddb60913056bcadaeeacfe0395447fd2472.zip | |
TTY: plug in deinitialize_tty_struct
Used the newly introduced deinitialize_tty_struct to properly shut
down ldisc.
It is intended to fix the Julian's reported problem. He reports that
kmemleak checker warns about memory leak:
unreferenced object 0xc0e19860 (size 8):
comm cat, pid 1226, jiffies 4294919464 (age 287.476s)
hex dump (first 8 bytes):
44 de 2d c1 01 00 00 00 D.-.....
backtrace:
[<c1065a74>] create_object+0x109/0x1ad
[<c1063d2b>] kmem_cache_alloc+0x60/0x68
[<c113505c>] tty_ldisc_get+0x54/0x76
[<c11358c9>] tty_ldisc_init+0xa/0x20
[<c1130ab4>] initialize_tty_struct+0x2d/0x1ac
[<c1130c8c>] tty_init_dev+0x59/0x10d
[<c113136d>] tty_open+0x24a/0x3a2
...
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Reported-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/tty/pty.c | 6 | ||||
| -rw-r--r-- | drivers/tty/tty_io.c | 5 |
2 files changed, 7 insertions, 4 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index b25d6c4014a5..21bddf359dbb 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -304,7 +304,7 @@ static int pty_install(struct tty_driver *driver, struct tty_struct *tty) the easy way .. */ retval = tty_init_termios(tty); if (retval) - goto err_module_put; + goto err_deinit_tty; retval = tty_init_termios(o_tty); if (retval) @@ -327,7 +327,8 @@ static int pty_install(struct tty_driver *driver, struct tty_struct *tty) return 0; err_free_termios: tty_free_termios(tty); -err_module_put: +err_deinit_tty: + deinitialize_tty_struct(o_tty); module_put(o_tty->driver->owner); err_free_tty: free_tty_struct(o_tty); @@ -592,6 +593,7 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty) pty_count++; return 0; err_free_mem: + deinitialize_tty_struct(o_tty); kfree(o_tty->termios); kfree(tty->termios); module_put(o_tty->driver->owner); diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index f5dd23520fe3..8540f2bab9c6 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1399,7 +1399,7 @@ struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx, retval = tty_driver_install_tty(driver, tty); if (retval < 0) - goto err_free_tty; + goto err_deinit_tty; /* * Structures all installed ... call the ldisc open routines. @@ -1411,7 +1411,8 @@ struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx, goto err_release_tty; return tty; -err_free_tty: +err_deinit_tty: + deinitialize_tty_struct(tty); free_tty_struct(tty); err_module_put: module_put(driver->owner); |