Messages in this thread | | | Date | Thu, 30 Jan 2020 13:10:57 +0200 | From | Mike Rapoport <> | Subject | Re: [GIT PULL] x86/asm changes for v5.6 |
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On Thu, Jan 30, 2020 at 08:55:49AM +0100, Borislav Petkov wrote: > Hello Damian, > > On Thu, Jan 30, 2020 at 06:47:14AM +0100, Damian Tometzki wrote: > > in my qemu env the system isnt coming up. I tried both with and without the > > changes from Borislav. > > in the future, please do not hijack the thread like that but start a new > one or open a bug on bugzilla.kernel.org. Your issue is something else. > > > 0.605193] ------------[ cut here ]------------ > > [ 0.605933] General protection fault in user access. Non-canonical > > address? > > There it is. > > > [ 0.605948] WARNING: CPU: 0 PID: 1 at arch/x86/mm/extable.c:77 > > ex_handler_uaccess+0x48/0x50 > > [ 0.606931] Modules linked in: > > [ 0.606931] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0 #15 > > [ 0.606931] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > > rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014 > > [ 0.606931] RIP: 0010:ex_handler_uaccess+0x48/0x50
...
> It looks like dquot_init->register_sysctl_table-> ... does copy_to_user > at some point and it goes off into the weeds and %rsi becomes > non-canonical. > > Please start a new thread or open a bug and upload your .config and > dmesg. We'll continue debugging that there.
Maybe that won't be needed.
It seems that this a random boot crash caused by 987f028b8637cfa7 ("char: hpet: Use flexible-array member") and fix is on the way:
https://lore.kernel.org/lkml/202001300450.00U4ocvS083098@www262.sakura.ne.jp/
> Thx. > > -- > Regards/Gruss, > Boris. > > SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg
-- Sincerely yours, Mike.
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