Booting 4.5.0-rc1 with new UBSAN checker enabled: [ 4.556968] ================================================================================ [ 4.556972] UBSAN: Undefined behaviour in drivers/usb/core/devio.c:1517:25 [ 4.556975] shift exponent -1 is negative [ 4.556979] CPU: 2 PID: 3624 Comm: usb Not tainted 4.5.0-rc1 #252 [ 4.556981] Hardware name: Apple Inc. MacBookPro10,2/Mac-AFD8A9D944EA4843, BIOS MBP102.88Z.0106.B0A.1509130955 09/13/2015 [ 4.556984] 0000000000000000 0000000000000000 ffffffff845c6528 ffff8802493b3c68 [ 4.556988] ffffffff81b2e7d9 0000000000000007 ffff8802493b3c98 ffff8802493b3c80 [ 4.556992] ffffffff81bcb87d ffffffffffffffff ffff8802493b3d10 ffffffff81bcc1c1 [ 4.556996] Call Trace: [ 4.557004] [<ffffffff81b2e7d9>] dump_stack+0x45/0x6c [ 4.557010] [<ffffffff81bcb87d>] ubsan_epilogue+0xd/0x40 [ 4.557015] [<ffffffff81bcc1c1>] __ubsan_handle_shift_out_of_bounds+0xf1/0x140 [ 4.557020] [<ffffffff81438f49>] ? __kmalloc+0x209/0x5f0 [ 4.557025] [<ffffffff8220a615>] ? usb_alloc_urb+0x15/0x40 [ 4.557030] [<ffffffff822247af>] ? proc_do_submiturb+0x9af/0x2c30 [ 4.557034] [<ffffffff82226794>] proc_do_submiturb+0x2994/0x2c30 [ 4.557039] [<ffffffff811eb821>] ? blocking_notifier_call_chain+0x11/0x20 [ 4.557044] [<ffffffff8222733b>] usbdev_do_ioctl+0x90b/0x2170 [ 4.557049] [<ffffffff81279fe4>] ? hrtimer_start_range_ns+0x274/0xc60 [ 4.557053] [<ffffffff82228bb9>] usbdev_ioctl+0x9/0x10 [ 4.557059] [<ffffffff8148a322>] do_vfs_ioctl+0xd2/0xcb0 [ 4.557063] [<ffffffff8148af74>] SyS_ioctl+0x74/0x80 [ 4.557067] [<ffffffff82b40a57>] entry_SYSCALL_64_fastpath+0x12/0x6a [ 4.557070] ================================================================================ -- 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
