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Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6809489B33; Tue, 15 Dec 2020 08:06:56 +0000 (UTC) Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by gabe.freedesktop.org (Postfix) with ESMTPS id BB4A86E112 for ; Mon, 14 Dec 2020 09:13:12 +0000 (UTC) Received: by mail-il1-f199.google.com with SMTP id q2so12952952ilt.20 for ; Mon, 14 Dec 2020 01:13:12 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=Xwq+h39/FNGcyxtgEq8iwiPV6bbaAoQGXtrZlx1lkEA=; b=L7feVYq2dSYb6sZSUMWCmSG1AjYWSzkw3vr4u+X/T4qsEutx6w8q7sX2bfSgKnDcJA jZzWQCdUPuAc/R6twBs5rBW2nO5SpMRYzgHqzw+YGlLZ7LqfNXA0kKVIt25s1UKT3cOP isN7SWmX3A6KWHq5urBLGP+rgFxJx0Vw0GTLWN6xwh7NJ4fJtl+dheEiiBbCLky+8AdE +hLl3mKuzG2OtmtoANe8i93ZORGN/xSdElGhuDzCT0YcUeiVSTLS9BLeWVpJAkJabiMg rnmnllJrEXTNWL0mh0O/HSX/lh5OQj5v/EBHYK1DItw21n6aTv5r2B+AdF1PK4anXbXz RnjQ== X-Gm-Message-State: AOAM5315XZTsHbdGMZpGlw5xrTUDbFnG/jwU4Mv/jfypSSJo3x4KYwYo R0dYD5OQrthb5BdN3w25rGPHJB4CcD46ah/zYWzESW2AhRQE X-Google-Smtp-Source: ABdhPJw8ZFAjwxvmwvqPi0SPPyyv9Z+QTUIXnzL62HLv85D0ycwzfSH4pN+2ewuQ8JhjdX086viZYubBgKBUbuHzI2tIbDYzaqrl MIME-Version: 1.0 X-Received: by 2002:a92:998c:: with SMTP id t12mr10118400ilk.140.1607937191228; Mon, 14 Dec 2020 01:13:11 -0800 (PST) Date: Mon, 14 Dec 2020 01:13:11 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001aba8205b6690d78@google.com> Subject: memory leak in dlfb_usb_probe From: syzbot To: b.zolnierkie@samsung.com, bernie@plugable.com, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com X-Mailman-Approved-At: Tue, 15 Dec 2020 08:06:55 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hello, syzbot found the following issue on: HEAD commit: a68a0262 mm/madvise: remove racy mm ownership check git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1538046b500000 kernel config: https://syzkaller.appspot.com/x/.config?x=4305fa9ea70c7a9f dashboard link: https://syzkaller.appspot.com/bug?extid=c9e365d7f450e8aa615d compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1779cc13500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1173d00f500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c9e365d7f450e8aa615d@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88810adde100 (size 32): comm "kworker/1:0", pid 17, jiffies 4294947788 (age 19.520s) hex dump (first 32 bytes): 10 30 c3 0d 81 88 ff ff c0 fa 63 12 81 88 ff ff .0........c..... 00 30 c3 0d 81 88 ff ff 80 d1 3a 08 81 88 ff ff .0........:..... backtrace: [<0000000019512953>] kmalloc include/linux/slab.h:552 [inline] [<0000000019512953>] kzalloc include/linux/slab.h:664 [inline] [<0000000019512953>] dlfb_alloc_urb_list drivers/video/fbdev/udlfb.c:1892 [inline] [<0000000019512953>] dlfb_usb_probe.cold+0x289/0x988 drivers/video/fbdev/udlfb.c:1704 [<0000000072160152>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<00000000463fbcb4>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000b881a711>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000364bbda5>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<00000000eecca418>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159 [<00000000edfeca2d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<000000001830872b>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 BUG: memory leak unreferenced object 0xffff8881083ad180 (size 192): comm "kworker/1:0", pid 17, jiffies 4294947788 (age 19.520s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 98 d1 3a 08 81 88 ff ff ..........:..... backtrace: [<00000000a7783a78>] kmalloc include/linux/slab.h:557 [inline] [<00000000a7783a78>] usb_alloc_urb+0x66/0xe0 drivers/usb/core/urb.c:74 [<0000000082822843>] dlfb_alloc_urb_list drivers/video/fbdev/udlfb.c:1897 [inline] [<0000000082822843>] dlfb_usb_probe.cold+0x2aa/0x988 drivers/video/fbdev/udlfb.c:1704 [<0000000072160152>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<00000000463fbcb4>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000b881a711>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000364bbda5>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<00000000eecca418>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159 [<00000000edfeca2d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<000000001830872b>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 BUG: memory leak unreferenced object 0xffff88811263fb20 (size 32): comm "kworker/1:0", pid 17, jiffies 4294947788 (age 19.530s) hex dump (first 32 bytes): 00 fb 63 12 81 88 ff ff 10 30 c3 0d 81 88 ff ff ..c......0...... 00 30 c3 0d 81 88 ff ff c0 53 c8 0b 81 88 ff ff .0.......S...... backtrace: [<0000000019512953>] kmalloc include/linux/slab.h:552 [inline] [<0000000019512953>] kzalloc include/linux/slab.h:664 [inline] [<0000000019512953>] dlfb_alloc_urb_list drivers/video/fbdev/udlfb.c:1892 [inline] [<0000000019512953>] dlfb_usb_probe.cold+0x289/0x988 drivers/video/fbdev/udlfb.c:1704 [<0000000072160152>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<00000000463fbcb4>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000b881a711>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000364bbda5>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<00000000eecca418>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159 [<00000000edfeca2d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<000000001830872b>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel