Commit:     c2c88f109eebb940ddca17472d2e149560bcf7eb
Parent:     7a5e6bc29aca331267dfc9f49129b9432ac84d70
Author:     Bernhard Walle <[EMAIL PROTECTED]>
AuthorDate: Fri Mar 16 13:38:30 2007 -0800
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri Mar 16 19:25:06 2007 -0700

    [PATCH] Initialise SAK member for each virtual console to prevent oops
    Initialise the SAK member of the vc_cons variable on all virtual terminals,
    not only the first one.  This prevents an oops when trying Sysrq-C on e.g.
    the second virtual terminal:
      kernel BUG at kernel/workqueue.c:212!
      invalid opcode: 0000 [1] SMP
      CPU 0
      Modules linked in: i915 drm deflate zlib_deflate twofish twofish_common 
serpent blowfish des ce
      Pid: 0, comm: swapper Not tainted 2.6.21-rc3-default #15
      RIP: 0010:[<ffffffff8028c955>]  [<ffffffff8028c955>] queue_work+0x32/0x51
      RSP: 0018:ffffffff805fada8  EFLAGS: 00010013
      RAX: ffffffff80683f38 RBX: ffffffff804ae700 RCX: 0000000000000000
      RDX: 0000000000000000 RSI: ffffffff80683f30 RDI: ffff81000134a840
      RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000002
      R10: ffffffff805990e0 R11: ffff810037f4c0f0 R12: 000000000000006b
      R13: ffff81007aa23000 R14: 0000000000000001 R15: 0000000000000096
      FS:  0000000000000000(0000) GS:ffffffff804d8000(0000) 
      CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
      CR2: 00002b72026e9000 CR3: 0000000079175000 CR4: 00000000000006e0
      Process swapper (pid: 0, threadinfo ffffffff8059e000, task 
      Stack:  0000000000000096 ffffffff803635db ffffffff805fadf8 
       ffff8100013c2e40 0000000000000025 ffff81007c931c00 ffff81007aa23000
       0000000000000001 ffffffff8035e3ee 0000000000000092 ffff810037cc8000
      Call Trace:
       <IRQ>  [<ffffffff803635db>] __handle_sysrq+0x98/0x129
       [<ffffffff8035e3ee>] kbd_event+0x32e/0x56a
       [<ffffffff8037d502>] input_event+0x422/0x44a
       [<ffffffff80381d71>] atkbd_interrupt+0x449/0x503
       [<ffffffff8037a42d>] serio_interrupt+0x37/0x6f
       [<ffffffff8037affb>] i8042_interrupt+0x1f4/0x20a
       [<ffffffff8026bd20>] smp_send_timer_broadcast_ipi+0x2d/0x4e
       [<ffffffff8020eee5>] handle_IRQ_event+0x25/0x53
       [<ffffffff802a924c>] handle_edge_irq+0xe4/0x128
       [<ffffffff802562ac>] call_softirq+0x1c/0x28
       [<ffffffff802632eb>] do_IRQ+0x6c/0xd3
       [<ffffffff8024f4e7>] mwait_idle+0x0/0x45
       [<ffffffff80255631>] ret_from_intr+0x0/0xa
       <EOI>  [<ffffffff80248a4d>] datagram_poll+0x0/0xc8
       [<ffffffff8024f529>] mwait_idle+0x42/0x45
       [<ffffffff80242c05>] cpu_idle+0x8b/0xae
       [<ffffffff805a8779>] start_kernel+0x2b9/0x2c5
       [<ffffffff805a815e>] _sinittext+0x15e/0x162
      Code: 0f 0b eb fe 48 8b 07 48 63 d2 48 f7 d0 48 8b 3c d0 e8 13 ff
      RIP  [<ffffffff8028c955>] queue_work+0x32/0x51
       RSP <ffffffff805fada8>
      Kernel panic - not syncing: Aiee, killing interrupt handler!
    Signed-off-by: Bernhard Walle <[EMAIL PROTECTED]>
    Acked-by: Eric Biederman <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
 drivers/char/vt.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 0fefe2a..1bbb45b 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -724,6 +724,7 @@ int vc_allocate(unsigned int currcons)      /* return 0 on 
success */
                return -ENOMEM;
            memset(vc, 0, sizeof(*vc));
            vc_cons[currcons].d = vc;
+           INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
            visual_init(vc, currcons, 1);
            if (!*vc->vc_uni_pagedir_loc)
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