When em28xx_ir_init() fails due to an configuration error, it frees the memory of struct em28xx_IR *ir, but doesn't set the corresponding pointer in the device struct to NULL. On device removal, em28xx_ir_fini() gets called, which then calls rc_unregister_device() with a pointer to freed memory.
Fixes bug 26572 (http://bugzilla.kernel.org/show_bug.cgi?id=26572) Signed-off-by: Frank Schäfer <fschaefer....@googlemail.com> Cc: sta...@kernel.org --- drivers/media/usb/em28xx/em28xx-input.c | 11 +++++------ 1 Datei geändert, 5 Zeilen hinzugefügt(+), 6 Zeilen entfernt(-) diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c index 3899ea8..3598221 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -600,7 +600,7 @@ static int em28xx_ir_init(struct em28xx *dev) ir = kzalloc(sizeof(*ir), GFP_KERNEL); rc = rc_allocate_device(); if (!ir || !rc) - goto err_out_free; + goto error; /* record handles to ourself */ ir->dev = dev; @@ -629,14 +629,14 @@ static int em28xx_ir_init(struct em28xx *dev) break; default: err = -ENODEV; - goto err_out_free; + goto error; } /* By default, keep protocol field untouched */ rc_type = RC_BIT_UNKNOWN; err = em28xx_ir_change_protocol(rc, &rc_type); if (err) - goto err_out_free; + goto error; /* This is how often we ask the chip for IR information */ ir->polling = 100; /* ms */ @@ -661,7 +661,7 @@ static int em28xx_ir_init(struct em28xx *dev) /* all done */ err = rc_register_device(rc); if (err) - goto err_out_stop; + goto error; em28xx_register_i2c_ir(dev); @@ -674,9 +674,8 @@ static int em28xx_ir_init(struct em28xx *dev) return 0; -err_out_stop: +error: dev->ir = NULL; -err_out_free: rc_free_device(rc); kfree(ir); return err; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
