================================================================================ UBSAN: shift-out-of-bounds in drivers/media/rc/mceusb.c:1173:29 shift exponent 49 is too large for 32-bit type 'int' CPU: 0 PID: 2635 Comm: systemd-journal Not tainted 5.10.0-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_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:devkmsg_read+0x3df/0x750 kernel/printk/printk.c:754 Code: 01 80 3c 02 00 0f 85 19 03 00 00 48 c7 c7 c0 95 66 87 4c 89 6d 00 e8 00 0d 97 04 e8 0b 4b 00 00 e8 b6 4e 1c 00 fb 48 8b 2c 24 <4c> 89 ff 48 c7 c3 ea ff ff ff 48 89 ee e8 df 96 16 00 49 39 ef 77 RSP: 0018:ffffc90000267d68 EFLAGS: 00000202 RAX: 0000000002e4286b RBX: ffff88810edd20f8 RCX: ffffffff8126e037 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8129b43a RBP: 0000000000002000 R08: 0000000000000001 R09: ffffffff8a02c65f R10: fffffbfff14058cb R11: 000000000000005c R12: 1ffff9200004cfb2 R13: 000000000001483b R14: ffff88810edd0068 R15: 000000000000007f vfs_read+0x1b5/0x570 fs/read_write.c:494 ksys_read+0x12d/0x250 fs/read_write.c:634 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fc7784b722d Code: c1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 97 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffcaedda600 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffcaeddd080 RCX: 00007fc7784b722d RDX: 0000000000002000 RSI: 00007ffcaeddae80 RDI: 0000000000000009 RBP: 0000000000000000 R08: 0000000000000008 R09: 0000564e75efb7b8 R10: 0000564e75efb780 R11: 0000000000000293 R12: 00007ffcaeddae80 R13: 00007ffcaeddcfd8 R14: 0000564e745e3958 R15: 0005b707dbd665e9 ================================================================================