Hi, > Hi! > > I've got the following error report while running the syzkaller fuzzer. > > On commit 3c49de52d5647cda8b42c4255cf8a29d1e22eff5 (Dec 2). > > general protection fault: 0000 [#1] SMP KASAN > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 0 PID: 10564 Comm: syz-executor0 Not tainted 4.9.0-rc7+ #4 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > task: ffff88006cd0db40 task.stack: ffff88006a050000 > RIP: 0010:[<ffffffff8201aa9e>] [<ffffffff8201aa9e>] > __list_del_entry+0xce/0x280 lib/list_debug.c:57 > RSP: 0018:ffff88006a056ea8 EFLAGS: 00010246 > RAX: dffffc0000000000 RBX: 1ffff1000d40add6 RCX: ffffffff860ceac8 > RDX: 0000000000000000 RSI: ffff88006cd0e340 RDI: ffffffff860cead0 > RBP: ffff88006a056f38 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000000000 R14: ffffffff860cea00 R15: ffff88006a056f10 > FS: 0000000000000000(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000000002000d000 CR3: 0000000005c1d000 CR4: 00000000000006f0 > Stack: > ffffffff859785e0 0000000041b58ab3 ffffffff8593717a ffffffff8201a9d0 > 1ffff1000d40ade0 ffff88006cd0db40 ffffffff817e5a3c ffff88006cd0e338 > 0000000000000a06 1ffff1000d40ade4 ffff88006cd0e340 0000000000000000 > Call Trace: > [<ffffffff8201ac5d>] list_del+0xd/0x70 lib/list_debug.c:77 > [<ffffffff830ebf80>] usb_gadget_unregister_driver+0x120/0x240 > drivers/usb/gadget/udc/core.c:1365 > [<ffffffff832245d0>] dev_release+0x80/0x160 > drivers/usb/gadget/legacy/inode.c:1187 > [<ffffffff81805852>] __fput+0x332/0x7f0 fs/file_table.c:208 > [<ffffffff81805d95>] ____fput+0x15/0x20 fs/file_table.c:244 > [<ffffffff81338b9b>] task_work_run+0x19b/0x270 kernel/task_work.c:116 > [< inline >] exit_task_work include/linux/task_work.h:21 > [<ffffffff812c7eca>] do_exit+0x16aa/0x2530 kernel/exit.c:828 > [<ffffffff812cd749>] do_group_exit+0x149/0x420 kernel/exit.c:932 > [<ffffffff812faa9d>] get_signal+0x76d/0x17b0 kernel/signal.c:2307 > [<ffffffff811cfee2>] do_signal+0xd2/0x2120 arch/x86/kernel/signal.c:807 > [<ffffffff81003d00>] exit_to_usermode_loop+0x170/0x200 > arch/x86/entry/common.c:156 > [< inline >] prepare_exit_to_usermode arch/x86/entry/common.c:190 > [<ffffffff81007293>] syscall_return_slowpath+0x3d3/0x420 > arch/x86/entry/common.c:259 > [<ffffffff84f47f62>] entry_SYSCALL_64_fastpath+0xc0/0xc2 > Code: c5 0f 84 e2 00 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f > 84 ec 00 00 00 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> > 3c 02 00 0f 85 35 01 00 00 4d 8b 04 24 49 39 c8 0f 85 e1 00 > RIP [<ffffffff8201aa9e>] __list_del_entry+0xce/0x280 lib/list_debug.c:57 > RSP <ffff88006a056ea8> > ---[ end trace 883f708e6720200f ]--- > Kernel panic - not syncing: Fatal exception > Dumping ftrace buffer: > (ftrace buffer empty) > Kernel Offset: disabled > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html Looks similar to the oops which I had reported a few days ago. See mail "PROBLEM: Oops when unbinding an inactive gadget configfs configuration from UDC". Maybe you want to test my bugfix proposal "usb: gadget: udc: core: fix return code of usb_gadget_probe_driver()". Regards, Felix -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
