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UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18
shift exponent 109 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 12191 Comm: syz-executor.5 Not tainted 5.12.0-rc2-next-20210309-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 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:327
 red_calc_qavg_from_idle_time include/net/red.h:312 [inline]
 red_adaptative_algo include/net/red.h:444 [inline]
 red_adaptative_timer.cold+0x1bd/0x26c net/sched/sch_red.c:324
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1431
 expire_timers kernel/time/timer.c:1476 [inline]
 __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1745
 __run_timers kernel/time/timer.c:1726 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1758
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:422
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:slow_down_io arch/x86/include/asm/paravirt.h:42 [inline]
RIP: 0010:outb_p arch/x86/include/asm/io.h:334 [inline]
RIP: 0010:vga_io_w include/video/vga.h:209 [inline]
RIP: 0010:setop drivers/video/fbdev/vga16fb.c:150 [inline]
RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1162 [inline]
RIP: 0010:vga16fb_imageblit+0x82e/0x2210 drivers/video/fbdev/vga16fb.c:1260
Code: 98 b6 de 8b 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 83 19 00 00 ff 15 32 0b e6 07 31 c0 ba cf 03 00 00 ee <48> c7 c2 98 b6 de 8b 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80
RSP: 0018:ffffc90001b2f550 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90013eec000
RDX: 00000000000003cf RSI: ffffffff83f8aaa2 RDI: 0000000000000003
RBP: ffffc90001b2f6dc R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff83f8aa95 R11: 0000000000000001 R12: ffffffff8131ec10
R13: ffff888142ba4d60 R14: ffffc90001b2f6f8 R15: ffffc90001b2f6d8
 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:139 [inline]
 bit_putcs+0x6e1/0xd20 drivers/video/fbdev/core/bitblit.c:188
 fbcon_putcs+0x35a/0x450 drivers/video/fbdev/core/fbcon.c:1296
 do_update_region+0x399/0x630 drivers/tty/vt/vt.c:676
 insert_char+0x2fa/0x3e0 drivers/tty/vt/vt.c:849
 vc_con_write_normal drivers/tty/vt/vt.c:2813 [inline]
 do_con_write+0xe9e/0x1e60 drivers/tty/vt/vt.c:2914
 con_write+0x21/0x40 drivers/tty/vt/vt.c:3254
 process_output_block drivers/tty/n_tty.c:591 [inline]
 n_tty_write+0x410/0xfd0 drivers/tty/n_tty.c:2353
 do_tty_write drivers/tty/tty_io.c:1043 [inline]
 file_tty_write.constprop.0+0x526/0x910 drivers/tty/tty_io.c:1133
 call_write_iter include/linux/fs.h:1977 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x796/0xa30 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465f69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f924340d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465f69
RDX: 00000000000001b7 RSI: 0000000020001040 RDI: 0000000000000005
RBP: 00000000004bfa67 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffc5b58ae8f R14: 00007f924340d300 R15: 0000000000022000
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