Messages in this thread |  | | | Date | Mon, 07 Nov 2005 19:04:16 +0100 | | From | Patrizio Bassi <> | | Subject | Re: 2.6.14-git4 suspend fails: kernel NULL pointer dereference |
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Pavel Machek ha scritto:
>Hi! > > > >>echo shutdown > /sys/power/disk >>echo disk > /sys/power/state >> >>Unable to handle kernel NULL pointer dereference at virtual address 00000004 >> printing eip: >>EIP: 0060:[<c0132a5e>] Not tainted VLI >>EFLAGS: 00010286 (2.6.14-git4) >>EIP is at enter_state+0xe/0x90 >> >> > >It works for me, with pretty recent tree. But I see a potential >problem there, you are not using ACPI, right? > >I think it is caused by this commit: > >commit eb9289eb20df6b54214c45ac7c6bf5179a149026 >tree dac51cecdd94e0c7273c990259ddd800057311b9 >parent 0245b3e787dc3267a915e1f56419e7e9c197e148 >author Shaohua Li <shaohua.li@intel.com> Sun, 30 Oct 2005 15:00:01 >-0800 >committer Linus Torvalds <torvalds@g5.osdl.org> Sun, 30 Oct 2005 >17:37:15 -0800 > > [PATCH] introduce .valid callback for pm_ops > > Add pm_ops.valid callback, so only the available pm states show in > /sys/power/state. And this also makes an earlier states error >report at > enter_state before we do actual suspend/resume. > >Try this patch. > > Pavel > >diff --git a/kernel/power/main.c b/kernel/power/main.c >--- a/kernel/power/main.c >+++ b/kernel/power/main.c >@@ -167,7 +167,7 @@ static int enter_state(suspend_state_t s > { > int error; > >- if (pm_ops->valid && !pm_ops->valid(state)) >+ if (pm_ops && pm_ops->valid && !pm_ops->valid(state)) > return -ENODEV; > if (down_trylock(&pm_sem)) > return -EBUSY; > > > >
i'm using ACPI. i'òll try the patch and report asap.
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