Hello, syzbot found the following issue on: HEAD commit: 9cdbf646 Merge tag 'io_uring-5.12-2021-04-16' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=136ce5a6d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=fd35e661e44323ea dashboard link: https://syzkaller.appspot.com/bug?extid=d1e69c888f0d3866ead4 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ecba29d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=143cf955d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d1e69c888f0d3866ead4@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff8881120e1400 (size 1024): comm "kworker/0:2", pid 3660, jiffies 4294952380 (age 24.950s) hex dump (first 32 bytes): c8 78 3c 12 81 88 ff ff c8 78 3c 12 81 88 ff ff .x<......x<..... 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff82ba5d37>] kmalloc include/linux/slab.h:554 [inline] [<ffffffff82ba5d37>] kzalloc include/linux/slab.h:684 [inline] [<ffffffff82ba5d37>] usb_set_configuration+0x187/0xb90 drivers/usb/core/message.c:1992 [<ffffffff82bb69ec>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82ba874c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff825f67f9>] really_probe+0x159/0x4a0 drivers/base/dd.c:559 [<ffffffff825f6bc4>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745 [<ffffffff825f72de>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851 [<ffffffff825f3747>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<ffffffff825f6e72>] __device_attach+0x122/0x250 drivers/base/dd.c:919 [<ffffffff825f53e6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<ffffffff825f1935>] device_add+0x5d5/0xc40 drivers/base/core.c:3242 [<ffffffff841df2d9>] usb_new_device.cold+0x16a/0x582 drivers/usb/core/hub.c:2555 [<ffffffff82b9b24e>] hub_port_connect drivers/usb/core/hub.c:5223 [inline] [<ffffffff82b9b24e>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] [<ffffffff82b9b24e>] port_event drivers/usb/core/hub.c:5509 [inline] [<ffffffff82b9b24e>] hub_event+0x142e/0x20c0 drivers/usb/core/hub.c:5591 [<ffffffff81259619>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275 [<ffffffff81259f09>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421 [<ffffffff81261638>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<ffffffff8100227f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 BUG: memory leak unreferenced object 0xffff888110a217a0 (size 32): comm "kworker/0:2", pid 3660, jiffies 4294952380 (age 24.950s) hex dump (first 32 bytes): 31 2d 31 3a 30 2e 32 34 31 00 00 00 00 00 00 00 1-1:0.241....... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff8223411c>] kvasprintf+0x6c/0xf0 lib/kasprintf.c:25 [<ffffffff822341f8>] kvasprintf_const+0x58/0x110 lib/kasprintf.c:49 [<ffffffff822f402b>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:289 [<ffffffff825ec413>] dev_set_name+0x63/0x90 drivers/base/core.c:3028 [<ffffffff82ba6269>] usb_set_configuration+0x6b9/0xb90 drivers/usb/core/message.c:2099 [<ffffffff82bb69ec>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82ba874c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff825f67f9>] really_probe+0x159/0x4a0 drivers/base/dd.c:559 [<ffffffff825f6bc4>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745 [<ffffffff825f72de>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851 [<ffffffff825f3747>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<ffffffff825f6e72>] __device_attach+0x122/0x250 drivers/base/dd.c:919 [<ffffffff825f53e6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<ffffffff825f1935>] device_add+0x5d5/0xc40 drivers/base/core.c:3242 [<ffffffff841df2d9>] usb_new_device.cold+0x16a/0x582 drivers/usb/core/hub.c:2555 [<ffffffff82b9b24e>] hub_port_connect drivers/usb/core/hub.c:5223 [inline] [<ffffffff82b9b24e>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] [<ffffffff82b9b24e>] port_event drivers/usb/core/hub.c:5509 [inline] [<ffffffff82b9b24e>] hub_event+0x142e/0x20c0 drivers/usb/core/hub.c:5591 BUG: memory leak unreferenced object 0xffff88810c472800 (size 256): comm "kworker/0:2", pid 3660, jiffies 4294952409 (age 24.660s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 08 28 47 0c 81 88 ff ff .........(G..... 08 28 47 0c 81 88 ff ff b0 c4 5e 82 ff ff ff ff .(G.......^..... backtrace: [<ffffffff825f1b71>] kmalloc include/linux/slab.h:554 [inline] [<ffffffff825f1b71>] kzalloc include/linux/slab.h:684 [inline] [<ffffffff825f1b71>] device_private_init drivers/base/core.c:3084 [inline] [<ffffffff825f1b71>] device_add+0x811/0xc40 drivers/base/core.c:3134 [<ffffffff82ba6589>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164 [<ffffffff82bb69ec>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82ba874c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff825f67f9>] really_probe+0x159/0x4a0 drivers/base/dd.c:559 [<ffffffff825f6bc4>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745 [<ffffffff825f72de>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851 [<ffffffff825f3747>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<ffffffff825f6e72>] __device_attach+0x122/0x250 drivers/base/dd.c:919 [<ffffffff825f53e6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<ffffffff825f1935>] device_add+0x5d5/0xc40 drivers/base/core.c:3242 [<ffffffff841df2d9>] usb_new_device.cold+0x16a/0x582 drivers/usb/core/hub.c:2555 [<ffffffff82b9b24e>] hub_port_connect drivers/usb/core/hub.c:5223 [inline] [<ffffffff82b9b24e>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] [<ffffffff82b9b24e>] port_event drivers/usb/core/hub.c:5509 [inline] [<ffffffff82b9b24e>] hub_event+0x142e/0x20c0 drivers/usb/core/hub.c:5591 [<ffffffff81259619>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275 [<ffffffff81259f09>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421 [<ffffffff81261638>] kthread+0x178/0x1b0 kernel/kthread.c:292 [ 176. --- This report is generated by a bot. 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