Hello, syzbot found the following issue on: HEAD commit: 6ebb6814 Merge tag 'perf-urgent-2021-05-23' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1334afc7d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=ae7b129a135ab06b dashboard link: https://syzkaller.appspot.com/bug?extid=b558506ba8165425fee2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11ca4a35d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b558506ba8165425fee2@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff888118ddde40 (size 192): comm "kworker/1:2", pid 1931, jiffies 4295045866 (age 18.790s) hex dump (first 32 bytes): 40 39 e7 18 81 88 ff ff 00 00 00 00 00 00 00 00 @9.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728 [<ffffffff82be65e7>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff82624159>] really_probe+0x159/0x500 drivers/base/dd.c:576 [<ffffffff8262458b>] driver_probe_device+0x8b/0x100 drivers/base/dd.c:763 [<ffffffff82624cb6>] __device_attach_driver+0xf6/0x120 drivers/base/dd.c:870 [<ffffffff82621047>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<ffffffff82624832>] __device_attach+0x122/0x260 drivers/base/dd.c:938 [<ffffffff82622ce6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<ffffffff8261f105>] device_add+0x5d5/0xd70 drivers/base/core.c:3320 [<ffffffff82be3b89>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164 [<ffffffff82bf3f0c>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82be5d4c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff82624159>] really_probe+0x159/0x500 drivers/base/dd.c:576 [<ffffffff8262458b>] driver_probe_device+0x8b/0x100 drivers/base/dd.c:763 [<ffffffff82624cb6>] __device_attach_driver+0xf6/0x120 drivers/base/dd.c:870 BUG: memory leak unreferenced object 0xffff888113abcf00 (size 192): comm "kworker/1:1", pid 8586, jiffies 4295046670 (age 10.750s) hex dump (first 32 bytes): 40 69 0c 13 81 88 ff ff 00 00 00 00 00 00 00 00 @i.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728 [<ffffffff82be65e7>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff82624159>] really_probe+0x159/0x500 drivers/base/dd.c:576 [<ffffffff8262458b>] driver_probe_device+0x8b/0x100 drivers/base/dd.c:763 [<ffffffff82624cb6>] __device_attach_driver+0xf6/0x120 drivers/base/dd.c:870 [<ffffffff82621047>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<ffffffff82624832>] __device_attach+0x122/0x260 drivers/base/dd.c:938 [<ffffffff82622ce6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<ffffffff8261f105>] device_add+0x5d5/0xd70 drivers/base/core.c:3320 [<ffffffff82be3b89>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164 [<ffffffff82bf3f0c>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82be5d4c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff82624159>] really_probe+0x159/0x500 drivers/base/dd.c:576 [<ffffffff8262458b>] driver_probe_device+0x8b/0x100 drivers/base/dd.c:763 [<ffffffff82624cb6>] __device_attach_driver+0xf6/0x120 drivers/base/dd.c:870 BUG: memory leak unreferenced object 0xffff888118ee1900 (size 192): comm "kworker/0:0", pid 8419, jiffies 4295046919 (age 8.260s) hex dump (first 32 bytes): 40 49 0a 19 81 88 ff ff 00 00 00 00 00 00 00 00 @I.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728 [<ffffffff82be65e7>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff82624159>] really_probe+0x159/0x500 drivers/base/dd.c:576 [<ffffffff8262458b>] driver_probe_device+0x8b/0x100 drivers/base/dd.c:763 [<ffffffff82624cb6>] __device_attach_driver+0xf6/0x120 drivers/base/dd.c:870 [<ffffffff82621047>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<ffffffff82624832>] __device_attach+0x122/0x260 drivers/base/dd.c:938 [<ffffffff82622ce6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<ffffffff8261f105>] device_add+0x5d5/0xd70 drivers/base/core.c:3320 [<ffffffff82be3b89>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164 [<ffffffff82bf3f0c>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82be5d4c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff82624159>] really_probe+0x159/0x500 drivers/base/dd.c:576 [<ffffffff8262458b>] driver_probe_device+0x8b/0x100 drivers/base/dd.c:763 [<ffffffff82624cb6>] __device_attach_driver+0xf6/0x120 drivers/base/dd.c:870 --- 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@xxxxxxxxxxxxxxxx. 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
