================================================================================ UBSAN: shift-out-of-bounds in drivers/media/rc/mceusb.c:704:13 shift exponent 318 is too large for 32-bit type 'unsigned int' CPU: 1 PID: 25693 Comm: systemd-udevd Not tainted 5.11.0-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+0xfa/0x151 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:635 RIP: 0010:_raw_spin_unlock_irqrestore+0x30/0x40 kernel/locking/spinlock.c:192 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 aa e8 79 fb 48 89 ef e8 22 9b 7a fb 80 e7 02 74 06 e8 a8 3d 98 fb fb 65 ff 0d 10 13 55 7a <5b> 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 fd 65 ff RSP: 0018:ffffc900138cf6f0 EFLAGS: 00000286 RAX: 0000000000004329 RBX: 0000000000000202 RCX: 1ffffffff1195d09 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff85acdbe8 RBP: ffffffff8a5ce208 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff814519c8 R11: 000000000000003f R12: 1ffffffff14b9c40 R13: 0000000000000000 R14: dead000000000100 R15: dffffc0000000000 __debug_check_no_obj_freed lib/debugobjects.c:997 [inline] debug_check_no_obj_freed+0x20c/0x420 lib/debugobjects.c:1018 slab_free_hook mm/slub.c:1539 [inline] slab_free_freelist_hook+0xb6/0x130 mm/slub.c:1580 slab_free mm/slub.c:3143 [inline] kfree+0xdb/0x390 mm/slub.c:4139 tomoyo_check_open_permission+0x172/0x380 security/tomoyo/file.c:786 tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline] tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:308 security_file_open+0x52/0x4f0 security/security.c:1576 do_dentry_open+0x353/0x1090 fs/open.c:804 do_open fs/namei.c:3254 [inline] path_openat+0x1b9a/0x2730 fs/namei.c:3371 do_filp_open+0x17e/0x3c0 fs/namei.c:3398 do_sys_openat2+0x16d/0x420 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_open fs/open.c:1196 [inline] __se_sys_open fs/open.c:1192 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1192 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f59009a46f0 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24 RSP: 002b:00007ffe6aaa2eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f59009a46f0 RDX: 0000000000000180 RSI: 00000000000800c2 RDI: 0000556238839dd0 RBP: 000000000003a2f8 R08: 000000000000fc00 R09: 0000000000000030 R10: 0000000000000000 R11: 0000000000000246 R12: 0000556238839de7 R13: 8421084210842109 R14: 00000000000800c2 R15: 00007f5900a32540 ================================================================================