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    [PATCH] sysrq: disable lockdep on reboot · b2e9c7d0
    Peter Zijlstra 提交于
    SysRq : Emergency Sync
    Emergency Sync complete
    SysRq : Emergency Remount R/O
    Emergency Remount complete
    SysRq : Resetting
    BUG: warning at kernel/lockdep.c:1816/trace_hardirqs_on() (Not tainted)
    
    Call Trace:
     [<ffffffff8026d56d>] show_trace+0xae/0x319
     [<ffffffff8026d7ed>] dump_stack+0x15/0x17
     [<ffffffff802a68d1>] trace_hardirqs_on+0xbc/0x13d
     [<ffffffff803a8eec>] sysrq_handle_reboot+0x9/0x11
     [<ffffffff803a8f8d>] __handle_sysrq+0x99/0x130
     [<ffffffff803a903b>] handle_sysrq+0x17/0x19
     [<ffffffff803a36ee>] kbd_event+0x32e/0x57d
     [<ffffffff80401e35>] input_event+0x42d/0x45b
     [<ffffffff804063eb>] atkbd_interrupt+0x44d/0x53d
     [<ffffffff803fe5c5>] serio_interrupt+0x49/0x86
     [<ffffffff803ff2a4>] i8042_interrupt+0x202/0x21a
     [<ffffffff80210cf0>] handle_IRQ_event+0x2c/0x64
     [<ffffffff802bfd8b>] __do_IRQ+0xaf/0x114
     [<ffffffff8026ea24>] do_IRQ+0xf8/0x107
     [<ffffffff8025f886>] ret_from_intr+0x0/0xf
    DWARF2 unwinder stuck at ret_from_intr+0x0/0xf
    Leftover inexact backtrace:
     <IRQ> <EOI> [<ffffffff80258e36>] mwait_idle+0x3f/0x54
     [<ffffffff8024a33a>] cpu_idle+0xa2/0xc5
     [<ffffffff8026c34e>] rest_init+0x2b/0x2d
     [<ffffffff809708bc>] start_kernel+0x24a/0x24c
     [<ffffffff8097028b>] _sinittext+0x28b/0x292
    
    Since we're shutting down anyway, don't bother being smart,
    just turn the thing off.
    Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
    Acked-by: NIngo Molnar <mingo@elte.hu>
    Cc: Arjan van de Ven <arjan@linux.intel.com>
    Signed-off-by: NAndrew Morton <akpm@osdl.org>
    Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
    b2e9c7d0
sysrq.c 10.8 KB