> -----Original Message----- > From: Justin Piszcz [mailto:jpis...@lucidpixels.com] > Sent: Friday, February 27, 2015 9:54 AM > To: linux-kernel@vger.kernel.org > Subject: 3.19 kernel: BUG: unable to handle kernel NULL pointer dereference > > Hello, > > With kernel 3.15, I do not recall having any issues, with 3.19, I am getting > a kernel crash when I copy files over NFS from machine A to B. > Is this a known issue? > > I suspect it has to do something with this: > Feb 27 09:31:20 remote-host [ 15.745342] dmar: DRHD: handling fault status > reg 2 > Feb 27 09:31:20 remote-host [ 15.745361] dmar: DMAR:[DMA Read] Request > device [04:00.0] fault addr 0 #012[ 15.745361] DMAR:[fault reason 06] PTE > Read access is not set >
[ .. ] Here is another crash with debugging enabled: Feb 27 10:44:42 remote-host Feb 27 10:44:42 remote-host [ 2256.999876] RIP Feb 27 10:44:42 remote-host [<ffffffff814e4d01>] intel_unmap_sg+0x1/0x10 Feb 27 10:44:42 remote-host [ 2257.002194] RSP <ffff880c3fc03e38> Feb 27 10:44:42 remote-host [ 2257.003562] CR2: 0000000000000010 Feb 27 10:44:43 remote-host [ 2258.263414] ---[ end trace 8c48fd88f48d9b7a ]--- Feb 27 10:44:43 remote-host [ 2258.263421] Kernel panic - not syncing: Fatal exception in interrupt Feb 27 10:44:43 remote-host [ 2258.266476] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) Feb 27 10:44:43 remote-host [ 2258.270538] drm_kms_helper: panic occurred, switching back to text console Feb 27 10:44:43 remote-host [ 2258.273269] ---[ end Kernel panic - not syncing: Fatal exception in interrupt Feb 27 10:44:43 remote-host [ 2258.273278] ------------[ cut here ]------------ Feb 27 10:44:43 remote-host [ 2258.273284] WARNING: CPU: 6 PID: 0 at arch/x86/kernel/smp.c:124 native_smp_send_reschedule+0x61/0x70() Feb 27 10:44:43 remote-host [ 2258.273289] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G D 3.19.0 #3 Feb 27 10:44:43 remote-host [ 2258.273292] Hardware name: Supermicro X8DTH-i/6/iF/6F/X8DTH, BIOS 2.1b 05/04/12 Feb 27 10:44:43 remote-host [ 2258.273295] ffffffff81c08a23 Feb 27 10:44:43 remote-host ffff880c3fc03820 Feb 27 10:44:43 remote-host ffffffff818b4dc6 Feb 27 10:44:43 remote-host ffffffff81e45698 Feb 27 10:44:43 remote-host Feb 27 10:44:43 remote-host [ 2258.273306] 0000000000000000 Feb 27 10:44:43 remote-host ffff880c3fc03860 Feb 27 10:44:43 remote-host ffffffff810d8f8b Feb 27 10:44:43 remote-host 0000000000000001 Feb 27 10:44:43 remote-host Feb 27 10:44:43 remote-host [ 2258.273318] 0000000000000000 Feb 27 10:44:43 remote-host ffff880627c11a40 Feb 27 10:44:43 remote-host 0000000000000006 Feb 27 10:44:43 remote-host ffff880624632410 Feb 27 10:44:43 remote-host Feb 27 10:44:43 remote-host [ 2258.273330] Call Trace: Feb 27 10:44:43 remote-host [ 2258.273333] <IRQ> Feb 27 10:44:43 remote-host [<ffffffff818b4dc6>] dump_stack+0x45/0x57 Feb 27 10:44:43 remote-host [ 2258.273346] [<ffffffff810d8f8b>] warn_slowpath_common+0x7b/0xc0 Feb 27 10:44:43 remote-host [ 2258.273350] [<ffffffff810d90a5>] warn_slowpath_null+0x15/0x20 Feb 27 10:44:43 remote-host [ 2258.273355] [<ffffffff810690d1>] native_smp_send_reschedule+0x61/0x70 Feb 27 10:44:43 remote-host [ 2258.273363] [<ffffffff81107141>] trigger_load_balance+0x141/0x1f0 Feb 27 10:44:43 remote-host [ 2258.273367] [<ffffffff810fa320>] scheduler_tick+0x90/0xd0 Feb 27 10:44:43 remote-host [ 2258.273373] [<ffffffff81123bbc>] update_process_times+0x4c/0x60 Feb 27 10:44:43 remote-host [ 2258.273380] [<ffffffff81131d90>] tick_sched_handle.isra.18+0x20/0x50 Feb 27 10:44:43 remote-host [ 2258.273384] [<ffffffff81131dff>] tick_sched_timer+0x3f/0x80 Feb 27 10:44:43 remote-host [ 2258.273389] [<ffffffff811240cf>] __run_hrtimer.isra.32+0x4f/0x130 Feb 27 10:44:43 remote-host [ 2258.273394] [<ffffffff81124a2f>] hrtimer_interrupt+0xef/0x240 Feb 27 10:44:43 remote-host [ 2258.273399] [<ffffffff8106ae17>] local_apic_timer_interrupt+0x37/0x60 Feb 27 10:44:43 remote-host [ 2258.273403] [<ffffffff8106b3ec>] smp_apic_timer_interrupt+0x3c/0x50 Feb 27 10:44:43 remote-host [ 2258.273407] [<ffffffff818bcbea>] apic_timer_interrupt+0x6a/0x70 Feb 27 10:44:43 remote-host [ 2258.273412] [<ffffffff818b3ede>] ? panic+0x18f/0x1cd Feb 27 10:44:43 remote-host [ 2258.273416] [<ffffffff818b3eda>] ? panic+0x18b/0x1cd Feb 27 10:44:43 remote-host [ 2258.273421] [<ffffffff81042b83>] oops_end+0x83/0xa0 Feb 27 10:44:43 remote-host [ 2258.273426] [<ffffffff8107440b>] no_context+0x13b/0x390 Feb 27 10:44:43 remote-host [ 2258.273431] [<ffffffff8107477d>] __bad_area_nosemaphore+0x11d/0x240 Feb 27 10:44:43 remote-host [ 2258.273434] [<ffffffff810748ae>] bad_area_nosemaphore+0xe/0x10 Feb 27 10:44:43 remote-host [ 2258.273438] [<ffffffff81074b7e>] __do_page_fault+0x9e/0x4f0 Feb 27 10:44:43 remote-host [ 2258.273443] [<ffffffff814e062b>] ? dma_pte_clear_level+0x11b/0x1a0 Feb 27 10:44:43 remote-host [ 2258.273447] [<ffffffff8107500c>] do_page_fault+0xc/0x10 Feb 27 10:44:43 remote-host [ 2258.273451] [<ffffffff818bd372>] page_fault+0x22/0x30 Feb 27 10:44:43 remote-host [ 2258.273455] [<ffffffff814e4d00>] ? intel_unmap+0x1f0/0x1f0 Feb 27 10:44:43 remote-host [ 2258.273460] [<ffffffff814e4d01>] ? intel_unmap_sg+0x1/0x10 Feb 27 10:44:43 remote-host [ 2258.273468] [<ffffffff81409901>] ? blk_complete_request+0x11/0x20 Feb 27 10:44:43 remote-host [ 2258.273472] [<ffffffff81611100>] ? scsi_dma_unmap+0x50/0x70 Feb 27 10:44:43 remote-host [ 2258.273476] [<ffffffff8161bc45>] twl_interrupt+0x415/0x700 Feb 27 10:44:43 remote-host [ 2258.273480] [<ffffffff81118ac0>] handle_irq_event_percpu+0x60/0x110 Feb 27 10:44:43 remote-host [ 2258.273484] [<ffffffff81118ba5>] handle_irq_event+0x35/0x60 Feb 27 10:44:43 remote-host [ 2258.273489] [<ffffffff8111ba16>] handle_edge_irq+0xa6/0x150 Feb 27 10:44:43 remote-host [ 2258.273492] [<ffffffff8104154d>] handle_irq+0x1d/0x40 Feb 27 10:44:43 remote-host [ 2258.273496] [<ffffffff8104135a>] do_IRQ+0x4a/0xe0 Feb 27 10:44:43 remote-host [ 2258.273500] [<ffffffff818bc92a>] common_interrupt+0x6a/0x6a Feb 27 10:44:43 remote-host [ 2258.273503] <EOI> Feb 27 10:44:43 remote-host [<ffffffff81759c48>] ? cpuidle_enter_state+0x48/0xc0 Feb 27 10:44:43 remote-host [ 2258.273511] [<ffffffff81759c3d>] ? cpuidle_enter_state+0x3d/0xc0 Feb 27 10:44:43 remote-host [ 2258.273516] [<ffffffff81759d92>] cpuidle_enter+0x12/0x20 Feb 27 10:44:43 remote-host [ 2258.273520] [<ffffffff8110cce2>] cpu_startup_entry+0x272/0x2f0 Feb 27 10:44:43 remote-host [ 2258.273524] [<ffffffff81069b5a>] start_secondary+0x13a/0x150 Feb 27 10:44:43 remote-host [ 2258.273528] ---[ end trace 8c48fd88f48d9b7b ]--- Feb 27 10:46:09 atom rsyslogd: -- MARK -- Justin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
