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[PATCH] Initialise SAK member for each virtual console to prevent oops
author
Bernhard Walle
<bwalle@suse.de>
Fri, 16 Mar 2007 21:38:30 +0000
(13:38 -0800)
committer
Linus Torvalds
<torvalds@woody.linux-foundation.org>
Sat, 17 Mar 2007 02:25:06 +0000
(19:25 -0700)
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) knlGS:
0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0:
000000008005003b
CR2:
00002b72026e9000
CR3:
0000000079175000
CR4:
00000000000006e0
Process swapper (pid: 0, threadinfo
ffffffff8059e000
, task
ffffffff80490840
)
Stack:
0000000000000096
ffffffff803635db
ffffffff805fadf8
0000000000000001
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 <bwalle@suse.de>
Acked-by: Eric Biederman <ebiederm@xmission.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/char/vt.c
patch
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blob
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history
diff --git
a/drivers/char/vt.c
b/drivers/char/vt.c
index
0fefe2a
..
1bbb45b
100644
(file)
--- 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)
con_set_default_unimap(vc);