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Date: Sat, 18 Feb 2017 00:38:06 +0100 From: Gabriel C <nix.or.die@...il.com> To: Cong Wang <xiyou.wangcong@...il.com> Cc: lkml <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, "David S. Miller" <davem@...emloft.net>, "Peter Zijlstra (Intel)" <peterz@...radead.org> Subject: Re: e1000_netpoll() , BUG: sleeping function called from invalid context On 18.02.2017 00:25, Cong Wang wrote: > On Fri, Feb 17, 2017 at 3:16 PM, Gabriel C <nix.or.die@...il.com> wrote: >> >> >> On 17.02.2017 23:38, Cong Wang wrote: >>> >>> On Fri, Feb 17, 2017 at 1:20 PM, Gabriel C <nix.or.die@...il.com> wrote: >>>> >>>> Hi all, >>>> >>>> while poking at a different issue I found the following on my logs : >>>> >>>> [85362.132770] BUG: sleeping function called from invalid context at >>>> kernel/irq/manage.c:110 >>>> [85362.132771] in_atomic(): 1, irqs_disabled(): 1, pid: 1153, name: >>>> systemd-journal >>>> [85362.132772] no locks held by systemd-journal/1153. >>>> [85362.132772] irq event stamp: 60088359 >>>> [85362.132777] hardirqs last enabled at (60088359): [<ffffffff810d07c2>] >>>> vprintk_emit+0x432/0x470 >>>> [85362.132779] hardirqs last disabled at (60088358): [<ffffffff810d03ec>] >>>> vprintk_emit+0x5c/0x470 >>>> [85362.132782] softirqs last enabled at (60088258): [<ffffffff810688fd>] >>>> __do_softirq+0x22d/0x290 >>>> [85362.132784] softirqs last disabled at (60088233): [<ffffffff81068c0a>] >>>> irq_exit+0x6a/0xd0 >>>> [85362.132784] Preemption disabled at: >>>> [85362.132787] [<ffffffff815203de>] write_msg+0x4e/0xf0 >>>> [85362.132790] CPU: 0 PID: 1153 Comm: systemd-journal Tainted: G >>>> I >>>> 4.10.0-rc8-debug-00001-ga1015e374d94-dirty #5 >>>> [85362.132791] Hardware name: FUJITSU PRIMERGY >>>> TX200 S5 /D2709, BIOS 6.00 Rev. 1.14.2709 >>>> 02/04/2013 >>>> [85362.132792] Call Trace: >>>> [85362.132796] dump_stack+0x86/0xc1 >>>> [85362.132799] ___might_sleep+0x213/0x230 >>>> [85362.132801] __might_sleep+0x6b/0x80 >>>> [85362.132803] synchronize_irq+0x33/0x90 >>>> [85362.132805] ? __irq_put_desc_unlock+0x19/0x40 >>>> [85362.132807] ? __disable_irq_nosync+0x4e/0x60 >>>> [85362.132808] disable_irq+0x17/0x20 >>> >>> >>> >>> Hmm, your kernel base version is 4.10.0-rc8 but the symbols here >>> look like prior to my commit, because with my commit here should >>> be disable_hardirq() calling synchronize_hardirq(). >>> >>> Did you revert it or make any local changes? >> >> >> The kernel is -rc8 with reverted d966564fcdc19e13eb6ba1fbe6b8101070339c3d >> + >> http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=202461e2f3c15dbfb05825d29ace0d20cdf55fa4 >> + an debug patch from Thomas to find these goldfish issues. >> ( >> http://ftp.frugalware.org/pub/other/people/crazy/kernel/t/goldfish-debug.patch >> ) >> >> No other changes.. > > That is weird, the stack trace doesn't match the source code for some reason. > Can you objdump your e1000.ko module to see if that is true? > My card seems to use the e1000e driver which is buit-in.. Anyway here an objdump -x : http://ftp.frugalware.org/pub/other/people/crazy/kernel/t/objdump-x_e1000.ko.txt
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