Hello, syzbot found the following issue on: HEAD commit: 97fa5887cf28 USB: new quirk for Dell Gen 2 devices git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=170ebdc3f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=d7b232ec3adf5c8d dashboard link: https://syzkaller.appspot.com/bug?extid=02b16343704b3af1667e compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1124ad81f00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d6004df00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+02b16343704b3af1667e@xxxxxxxxxxxxxxxxxxxxxxxxx kobject_add_internal failed for raw-gadget with -EEXIST, don't try to register things with the same name in the same directory. UDC core: USB Raw Gadget: driver registration failed: -17 misc raw-gadget: fail, usb_gadget_register_driver returned -17 ------------[ cut here ]------------ Unexpected driver unregister! WARNING: CPU: 0 PID: 1308 at drivers/base/driver.c:194 driver_unregister drivers/base/driver.c:194 [inline] WARNING: CPU: 0 PID: 1308 at drivers/base/driver.c:194 driver_unregister+0x8c/0xb0 drivers/base/driver.c:191 Modules linked in: CPU: 0 PID: 1308 Comm: syz-executor314 Not tainted 5.18.0-rc5-syzkaller-00157-g97fa5887cf28 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:driver_unregister drivers/base/driver.c:194 [inline] RIP: 0010:driver_unregister+0x8c/0xb0 drivers/base/driver.c:191 Code: 68 4c 89 e7 e8 65 b9 db fe 48 89 ef e8 fd a0 ff ff 5d 41 5c e9 75 fa 78 fe e8 70 fa 78 fe 48 c7 c7 80 7a 81 86 e8 12 96 ee 02 <0f> 0b 5d 41 5c e9 5a fa 78 fe e8 75 93 ad fe eb 96 e8 6e 93 ad fe RSP: 0018:ffffc90001087a78 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88811d184050 RCX: 0000000000000000 RDX: ffff88810902d580 RSI: ffffffff812bdce8 RDI: fffff52000210f41 RBP: ffff88811d184098 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff812b86be R11: 0000000000000000 R12: 0000000000000000 R13: ffff88811d184008 R14: ffff88811d05b1a8 R15: ffff8881008456a0 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fea994ab2d0 CR3: 0000000007825000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> usb_gadget_unregister_driver+0x48/0x70 drivers/usb/gadget/udc/core.c:1590 raw_release+0x18a/0x290 drivers/usb/gadget/legacy/raw_gadget.c:401 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:37 [inline] do_exit+0xaff/0x2980 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 get_signal+0x22df/0x24c0 kernel/signal.c:2864 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867 exit_to_user_mode_loop kernel/entry/common.c:166 [inline] exit_to_user_mode_prepare+0x156/0x200 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fea99520a57 Code: Unable to access opcode bytes at RIP 0x7fea99520a2d. RSP: 002b:00007fea994aa258 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffef RBX: 00007fea994ab2d0 RCX: 00007fea99520a57 RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000003 RBP: 0000000000000000 R08: 000000000000ffff R09: 000000000000000b R10: 00007fea994aa300 R11: 0000000000000246 R12: 00007fea995a55e0 R13: 00007fea994aa2a0 R14: 00007fea994ac400 R15: 0000000000000003 </TASK> --- 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
