Got this while installing on HP 6910p Laptop -
[ 536.461411] Pid: 0, comm: swapper Not tainted 2.6.24-16-generic #1
[ 536.461459] [<c0164924>] __report_bad_irq+0x24/0x80
[ 536.461487] [<c0164bfb>] note_interrupt+0x27b/0x2c0
[ 536.461518] [<c0163e20>] handle_IRQ_event+0x30/0x60
[ 536.461542] [<c01655b6>] handle_fasteoi_irq+0x86/0xe0
[ 536.461563] [<c0106f1b>] do_IRQ+0x3b/0x70
[ 536.461593] [<c0105413>] common_interrupt+0x23/0x30
[ 536.461623] [<c012007b>] __is_prefetch+0x9b/0x240
[ 536.461644] [<f888659e>] acpi_idle_enter_simple+0x14c/0x1b6 [processor]
[ 536.461694] [<c029042c>] cpuidle_idle_call+0x7c/0xb0
[ 536.461710] [<c0102695>] cpu_idle+0x45/0xd0
[ 536.461726] [<c041ba4a>] start_kernel+0x30a/0x3a0
[ 536.461740] [<c041b130>] unknown_bootoption+0x0/0x1e0
[ 536.461778] =======================
[ 536.461781] handlers:
[ 536.461784] [<f8b42be0>] (sdhci_irq+0x0/0x5c0 [sdhci])
[ 536.461797] [<f8bb4830>] (yenta_interrupt+0x0/0xe0 [yenta_socket])
[ 536.461810] [<f8997e60>] (ata_interrupt+0x0/0x1f0 [libata])
[ 536.461850] Disabling IRQ #19
This bug disables an SD card reader in this laptop but is otherwise pretty harmless. I've just checked that a vanilla 2.6.25.3 kernel has this bug fixed.