================================================================================ UBSAN: shift-out-of-bounds in drivers/media/rc/mceusb.c:704:13 shift exponent 230 is too large for 32-bit type 'unsigned int' CPU: 1 PID: 2644 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_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+0x3cb/0x1990 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:check_kcov_mode+0x31/0x40 kernel/kcov.c:175 Code: 89 c2 81 e2 00 01 00 00 a9 00 01 ff 00 74 10 31 c0 85 d2 74 15 8b 96 dc 13 00 00 85 d2 74 0b 8b 86 b8 13 00 00 39 f8 0f 94 c0 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 31 c0 65 8b 15 67 b0 RSP: 0018:ffffc900002077b0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff88810f048000 RDI: 0000000000000003 RBP: 0000000000000001 R08: ffffffff86418a80 R09: ffffffff82091b0d R10: 0000000000000008 R11: 0000000000000000 R12: ffff88810f048000 R13: ffffffff863b7485 R14: 0000000000000000 R15: ffffc900002079c0 write_comp_data kernel/kcov.c:218 [inline] __sanitizer_cov_trace_switch+0x63/0xf0 kernel/kcov.c:320 vsnprintf+0x17d/0x14f0 lib/vsprintf.c:2575 tomoyo_supervisor+0x10c/0xf20 security/tomoyo/common.c:2069 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573 tomoyo_path_perm+0x2ec/0x3f0 security/tomoyo/file.c:838 security_inode_getattr+0xcf/0x140 security/security.c:1280 vfs_getattr fs/stat.c:121 [inline] vfs_statx+0x164/0x390 fs/stat.c:189 vfs_fstatat fs/stat.c:207 [inline] vfs_lstat include/linux/fs.h:3124 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:362 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fc7f22ec335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007ffdce213438 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000555a26d7ad60 RCX: 00007fc7f22ec335 RDX: 00007ffdce213470 RSI: 00007ffdce213470 RDI: 0000555a26d79d60 RBP: 00007ffdce213530 R08: 0000000000000003 R09: 0000000000001010 R10: 0000000000000020 R11: 0000000000000246 R12: 0000555a26d79d60 R13: 0000555a26d79d6a R14: 0000555a26d76e45 R15: 0000555a26d76e4a ================================================================================