================================================================================ UBSAN: shift-out-of-bounds in drivers/media/rc/mceusb.c:1173:29 shift exponent 119 is too large for 32-bit type 'int' CPU: 1 PID: 7202 Comm: kworker/1:4 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395 mceusb_handle_command drivers/media/rc/mceusb.c:1173 [inline] mceusb_process_ir_data drivers/media/rc/mceusb.c:1278 [inline] mceusb_dev_recv.cold+0x188/0x220 drivers/media/rc/mceusb.c:1376 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1657 usb_hcd_giveback_urb+0x38c/0x430 drivers/usb/core/hcd.c:1728 dummy_timer+0x11f4/0x32a0 drivers/usb/gadget/udc/dummy_hcd.c:1971 call_timer_fn+0x1a5/0x690 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x692/0xa50 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1744 __do_softirq+0x1b7/0x9c5 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu+0x119/0x1b0 kernel/softirq.c:420 irq_exit_rcu+0x5/0x10 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:console_unlock+0x809/0xbf0 kernel/printk/printk.c:2562 Code: 20 93 58 87 e8 e8 9b fd ff e8 a3 3f 00 00 31 ff 4c 89 ee e8 69 8d 16 00 4d 85 ed 0f 85 23 02 00 00 e8 6b 85 16 00 ff 34 24 9d <8b> 5c 24 34 31 ff 89 de e8 da 8c 16 00 85 db 0f 84 98 f9 ff ff e8 RSP: 0018:ffffc90004f17540 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000fa60000 RDX: 0000000000040000 RSI: ffffffff8129bfb5 RDI: ffffffff8129c1dd RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8a02c5e7 R10: fffffbfff14058bc R11: 0000000000000000 R12: ffffffff82ccbec0 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc90004f175a0 vprintk_emit+0x191/0x3e0 kernel/printk/printk.c:2074 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4283 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4294 __dev_printk+0xcf/0xf5 drivers/base/core.c:4306 _dev_info+0xd7/0x109 drivers/base/core.c:4352 announce_device drivers/usb/core/hub.c:2276 [inline] usb_new_device.cold+0x306/0x1057 drivers/usb/core/hub.c:2535 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2348/0x42d0 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x15c0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x38c/0x460 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 ================================================================================