The patch titled
Initialise SAK member for each virtual console to prevent oops
has been added to the -mm tree. Its filename is
initialise-sak-member-for-each-virtual-console-to-prevent-oops.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Initialise SAK member for each virtual console to prevent oops
From: Bernhard Walle <bwalle@xxxxxxx>
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@xxxxxxx>
Acked-by: Eric Biederman <ebiederm@xxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/vt.c | 1 +
1 file changed, 1 insertion(+)
diff -puN drivers/char/vt.c~initialise-sak-member-for-each-virtual-console-to-prevent-oops drivers/char/vt.c
--- a/drivers/char/vt.c~initialise-sak-member-for-each-virtual-console-to-prevent-oops
+++ a/drivers/char/vt.c
@@ -724,6 +724,7 @@ int vc_allocate(unsigned int currcons) /
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);
_
Patches currently in -mm which might be from bwalle@xxxxxxx are
origin.patch
initialise-sak-member-for-each-virtual-console-to-prevent-oops.patch
git-r8169.patch
fix-wrong-proc-iomem-on-sgi-altix.patch
ia64-platform_kernel_launch_event-is-noop-on-generic-kernel.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
