================================================================================ UBSAN: shift-out-of-bounds in drivers/media/rc/mceusb.c:704:13 shift exponent 176 is too large for 32-bit type 'unsigned int' CPU: 1 PID: 26652 Comm: systemd-udevd Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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_dev_printdata.cold+0x19/0x1e drivers/media/rc/mceusb.c:704 mceusb_process_ir_data drivers/media/rc/mceusb.c:1275 [inline] mceusb_dev_recv+0x3cf/0x18c0 drivers/media/rc/mceusb.c:1376 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f4/0x32a0 drivers/usb/gadget/udc/dummy_hcd.c:1971 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x67c/0xa10 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+0x1b0/0x944 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 kernel/softirq.c:420 [inline] irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:lock_acquire+0x1c2/0x6f0 kernel/locking/lockdep.c:5410 Code: f5 da 7e e8 f0 96 ff ff b8 ff ff ff ff 48 83 c4 20 65 0f c1 05 27 f5 da 7e 83 f8 01 4c 8b 54 24 08 0f 85 c4 03 00 00 41 52 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffffc90013ae7c80 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff9200275cf92 RCX: 0000000000000001 RDX: 1ffff110226bc7d3 RSI: 0000000000000008 RDI: ffffffff89b79e18 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8a1c2637 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888103eb3df0 R14: 0000000000000000 R15: 0000000000000000 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] proc_reg_release+0x1a7/0x360 fs/proc/inode.c:573 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x1e3/0x1f0 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f3260ee0a4b Code: 48 8b 34 24 eb c5 66 0f 1f 84 00 00 00 00 00 48 c7 c0 ff ff ff ff eb c8 0f 1f 80 00 00 00 00 48 63 7f 70 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 f3 c3 0f 1f 00 48 8b 15 19 74 32 00 f7 d8 RSP: 002b:00007fffe4cf07b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 000055ae3a4d5d40 RCX: 00007f3260ee0a4b RDX: 00007f3261204900 RSI: 0000000000000001 RDI: 0000000000000007 RBP: 00007f3261205440 R08: 00007f32620d88c0 R09: 0000000000000018 R10: 46fca7723320126e R11: 0000000000000206 R12: 0000000000000000 R13: 000055ae3a4d5d40 R14: 000055ae3a4dba51 R15: 000055ae3a4c2ca0 ================================================================================