================================================================================ UBSAN: shift-out-of-bounds in drivers/hid/hid-core.c:1315:20 shift exponent 4294967295 is too large for 32-bit type 'int' CPU: 0 PID: 2645 Comm: systemd-udevd 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 snto32.cold+0x37/0x3c drivers/hid/hid-core.c:1315 hid_input_field drivers/hid/hid-core.c:1548 [inline] hid_report_raw_event+0x7a9/0x11b0 drivers/hid/hid-core.c:1783 hid_input_report+0x360/0x4c0 drivers/hid/hid-core.c:1850 hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284 __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:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:64 Code: c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 RSP: 0018:ffffc90000197c88 EFLAGS: 00010206 RAX: ffff88811d648f00 RBX: ffffed1023ac9200 RCX: 0000000000000140 RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffffed1023ac90c0 RBP: 0000000000001000 R08: ffffed1023ac9000 R09: ffffed1023ac9000 R10: ffffffff8145fae8 R11: 0000000000000001 R12: ffff88811d648000 R13: ffff88811d648fff R14: ffff888100042140 R15: 0000000000001000 kasan_poison_shadow mm/kasan/common.c:130 [inline] kasan_unpoison_shadow+0x33/0x40 mm/kasan/common.c:144 __kasan_kmalloc.constprop.0+0x4b/0xd0 mm/kasan/common.c:456 slab_post_alloc_hook mm/slab.h:512 [inline] slab_alloc_node mm/slub.c:2889 [inline] slab_alloc mm/slub.c:2897 [inline] kmem_cache_alloc_trace+0x133/0x2a0 mm/slub.c:2914 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:682 [inline] kernfs_iop_get_link fs/kernfs/symlink.c:135 [inline] kernfs_iop_get_link+0x61/0x6e0 fs/kernfs/symlink.c:126 vfs_readlink+0x1d7/0x390 fs/namei.c:4552 do_readlinkat+0x27e/0x2f0 fs/stat.c:419 __do_sys_readlinkat fs/stat.c:434 [inline] __se_sys_readlinkat fs/stat.c:431 [inline] __x64_sys_readlinkat+0x93/0xf0 fs/stat.c:431 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f6098e0f0ba Code: 48 8b 0d e1 bd 2b 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 49 89 ca b8 0b 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ae bd 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffdc8784608 EFLAGS: 00000206 ORIG_RAX: 000000000000010b RAX: ffffffffffffffda RBX: 0000563db834b890 RCX: 00007f6098e0f0ba RDX: 0000563db834b890 RSI: 00007ffdc87846d0 RDI: 00000000ffffff9c RBP: 0000000000000064 R08: 0000563db73a1670 R09: 0000000000000070 R10: 0000000000000063 R11: 0000000000000206 R12: 00007ffdc87846d0 R13: 00000000ffffff9c R14: 00007ffdc8784660 R15: 0000000000000063 ================================================================================