Hello, syzbot found the following issue on: HEAD commit: 407ab579 Merge tag 'for-linus' of git://git.kernel.org/pub.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16d84062500000 kernel config: https://syzkaller.appspot.com/x/.config?x=a3f13716fa0212fd dashboard link: https://syzkaller.appspot.com/bug?extid=641bd6ff9b25e6d3aad1 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=102c2094500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16a8dfa8500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+641bd6ff9b25e6d3aad1@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff88810ed7cc00 (size 1024): comm "kworker/0:3", pid 4907, jiffies 4294954595 (age 14.630s) hex dump (first 32 bytes): 48 92 b6 11 81 88 ff ff 48 92 b6 11 81 88 ff ff H.......H....... 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000acb2212d>] kmalloc include/linux/slab.h:552 [inline] [<00000000acb2212d>] kzalloc include/linux/slab.h:664 [inline] [<00000000acb2212d>] usb_set_configuration+0x18c/0xb90 drivers/usb/core/message.c:1987 [<00000000398ef244>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<00000000c8516fd1>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000eb555eca>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<0000000082b68944>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<000000000485fb4d>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000a0e84ad1>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<0000000017598cdd>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000201e5839>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000ec5f56bf>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<0000000049b5ad41>] usb_new_device.cold+0x166/0x578 drivers/usb/core/hub.c:2554 [<0000000030bc00f0>] hub_port_connect drivers/usb/core/hub.c:5222 [inline] [<0000000030bc00f0>] hub_port_connect_change drivers/usb/core/hub.c:5362 [inline] [<0000000030bc00f0>] port_event drivers/usb/core/hub.c:5508 [inline] [<0000000030bc00f0>] hub_event+0x144a/0x20d0 drivers/usb/core/hub.c:5590 [<00000000e89e69ae>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272 [<0000000063d76c23>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418 [<00000000a311ec69>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<00000000690c42fe>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 BUG: memory leak unreferenced object 0xffff888110d0ab40 (size 32): comm "kworker/0:3", pid 4907, jiffies 4294954595 (age 14.630s) hex dump (first 32 bytes): 31 2d 31 3a 30 2e 30 00 00 00 00 00 00 00 00 00 1-1:0.0......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000faadb384>] kvasprintf+0x6c/0xf0 lib/kasprintf.c:25 [<00000000ae06ab4d>] kvasprintf_const+0x58/0x110 lib/kasprintf.c:49 [<0000000098542b5a>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:289 [<00000000d0bb751d>] dev_set_name+0x63/0x90 drivers/base/core.c:2722 [<00000000b7617caa>] usb_set_configuration+0x6be/0xb90 drivers/usb/core/message.c:2094 [<00000000398ef244>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<00000000c8516fd1>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000eb555eca>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<0000000082b68944>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<000000000485fb4d>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000a0e84ad1>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<0000000017598cdd>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000201e5839>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000ec5f56bf>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<0000000049b5ad41>] usb_new_device.cold+0x166/0x578 drivers/usb/core/hub.c:2554 [<0000000030bc00f0>] hub_port_connect drivers/usb/core/hub.c:5222 [inline] [<0000000030bc00f0>] hub_port_connect_change drivers/usb/core/hub.c:5362 [inline] [<0000000030bc00f0>] port_event drivers/usb/core/hub.c:5508 [inline] [<0000000030bc00f0>] hub_event+0x144a/0x20d0 drivers/usb/core/hub.c:5590 BUG: memory leak unreferenced object 0xffff88811182b900 (size 256): comm "kworker/0:3", pid 4907, jiffies 4294954600 (age 14.580s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 08 b9 82 11 81 88 ff ff ................ 08 b9 82 11 81 88 ff ff 40 44 58 82 ff ff ff ff ........@DX..... backtrace: [<000000000b81baae>] kmalloc include/linux/slab.h:552 [inline] [<000000000b81baae>] kzalloc include/linux/slab.h:664 [inline] [<000000000b81baae>] device_private_init drivers/base/core.c:2778 [inline] [<000000000b81baae>] device_add+0x7e8/0xc30 drivers/base/core.c:2828 [<000000002061ca5e>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159 [<00000000398ef244>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<00000000c8516fd1>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000eb555eca>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<0000000082b68944>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<000000000485fb4d>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000a0e84ad1>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<0000000017598cdd>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000201e5839>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000ec5f56bf>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<0000000049b5ad41>] usb_new_device.cold+0x166/0x578 drivers/usb/core/hub.c:2554 [<0000000030bc00f0>] hub_port_connect drivers/usb/core/hub.c:5222 [inline] [<0000000030bc00f0>] hub_port_connect_change drivers/usb/core/hub.c:5362 [inline] [<0000000030bc00f0>] port_event drivers/usb/core/hub.c:5508 [inline] [<0000000030bc00f0>] hub_event+0x144a/0x20d0 drivers/usb/core/hub.c:5590 [<00000000e89e69ae>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272 [<0000000063d76c23>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418 [<00000000a311ec69>] kthread+0x178/0x1b0 kernel/kthread.c:292 --- This report is generated by a bot. 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