On Wed, Nov 11, 2020 at 05:55:27AM -0800, syzbot wrote: > 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 #syz dup: memory leak in hub_event Alan Stern
