Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752659AbcCGKAW (ORCPT ); Mon, 7 Mar 2016 05:00:22 -0500 Received: from mail-wm0-f54.google.com ([74.125.82.54]:35006 "EHLO mail-wm0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752708AbcCGJ74 (ORCPT ); Mon, 7 Mar 2016 04:59:56 -0500 From: Holger Schurig To: linux-arm-kernel@lists.infradead.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: 4.4.3: OOPS when running "stress-ng --sock 5" In-Reply-To: <87twkmd6or.fsf@gmail.com> (Holger Schurig's message of "Fri, 04 Mar 2016 08:48:52 +0100") References: <87twkmd6or.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Date: Mon, 07 Mar 2016 10:59:51 +0100 Message-ID: <87bn6qd2w8.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6913 Lines: 88 I have rejoiced prematurely, it just now took way longer I hit the segfault. Previously 1m or at max 2m was enough. root@ptxc:~# stress-ng --sock 20 stress-ng: info: [359] dispatching hogs: 0 I/O-Sync, 0 CPU, 0 VM-mmap, 0 HDD-Write, 0 Fork, 0 Context-switch, 0 Pipe, 0 Cache, 20 Socket, 0 Yield, 0 Fallocate, 0 Flock, 0 Affinity, 0 Timer, 0 Dentry, 0 Urandom, 0 Float, 0 Int, 0 Semaphore, 0 Open, 0 SigQueue, 0 Poll [ 42.253392] random: nonblocking pool is initialized [ 567.649965] Unable to handle kernel NULL pointer dereference at virtual address 00000104 [ 567.658087] pgd = ee11c000 [ 567.660797] [00000104] *pgd=3eaf4831, *pte=00000000, *ppte=00000000 [ 567.667112] Internal error: Oops: 817 [#1] SMP ARM [ 567.671904] Modules linked in: bnep btusb btrtl btbcm btintel bluetooth smsc95xx usbnet usbhid mii imx_sdma flexcan [ 567.682514] CPU: 1 PID: 383 Comm: stress-ng-socke Not tainted 4.4.4PTXC #3 [ 567.689390] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [ 567.695920] task: ed9f9e00 ti: eeaf0000 task.ti: eeaf0000 [ 567.701333] PC is at __rmqueue+0x74/0x308 [ 567.705346] LR is at 0x3 [ 567.707882] pc : [] lr : [<00000003>] psr: 60030093 [ 567.707882] sp : eeaf1c00 ip : 00000200 fp : eeaf1c4c [ 567.719359] r10: efd5f514 r9 : 00000008 r8 : 00000000 [ 567.724585] r7 : 00000003 r6 : 00000000 r5 : c051343c r4 : 00000100 [ 567.731113] r3 : c05d6e2c r2 : 0000006c r1 : 00000200 r0 : 00000100 [ 567.737643] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none [ 567.744866] Control: 10c5387d Table: 3e11c04a DAC: 00000051 [ 567.750612] Process stress-ng-socke (pid: 383, stack limit = 0xeeaf0210) [ 567.757314] Stack: (0xeeaf1c00 to 0xeeaf2000) [ 567.761677] 1c00: 0000ffff c05d3200 ed976880 ed976880 eeaf1c54 c05d6d40 c03dc720 c03da9e8 [ 567.769859] 1c20: 20030013 eeaf1d54 c051343c c0513428 c0513428 6104de4b 00000008 c05d6d40 [ 567.778040] 1c40: eeaf1ce4 eeaf1c50 c0097d84 c0097364 00000141 0002a602 ef7bc2c0 00000018 [ 567.786220] 1c60: c05d77c0 c05d77c0 00000000 c05d6d40 00000000 00000000 00000000 00000000 [ 567.794401] 1c80: 00000100 c05d6f50 c05d77c8 c05d6e68 c05d78d5 00000128 00000141 020252c0 [ 567.802582] 1ca0: 00000000 fffffff8 00000000 eeaf1d54 60030013 00000003 00000000 020052c0 [ 567.810762] 1cc0: 00000003 c05d77c0 0000ffcb 6104de4b eeaf1e84 00000000 eeaf1d9c eeaf1ce8 [ 567.818942] 1ce0: c0098154 c009766c c006cb38 00100010 60ecb9db 40030013 eeaf1d1c ed976880 [ 567.827123] 1d00: ed976880 00040000 eacecc00 ed976880 eeaf1d84 eeaf1d20 c03f4d44 c03f2c30 [ 567.835304] 1d20: 00000002 ef001c00 00000000 024102c0 00000000 000346db c05b8100 00000000 [ 567.843484] 1d40: 00000002 ed976c14 00000002 00000000 00000000 c05d77c0 00000000 c05d6d40 [ 567.851664] 1d60: 00000000 00000000 00000000 00000000 eeaf1e84 ed9fa2b4 024000c0 00000fb0 [ 567.859845] 1d80: 0000ffcb 6104de4b eeaf1e84 00000000 eeaf1db4 eeaf1da0 c03901d4 c0098088 [ 567.868025] 1da0: ed976880 ed976880 eeaf1dcc eeaf1db8 c039024c c0390170 eaf60600 ed976880 [ 567.876206] 1dc0: eeaf1e4c eeaf1dd0 c03e83fc c039023c 0000ffcb 00000001 23c09b2d 000017c8 [ 567.884386] 1de0: 00000001 eeaf1e8c c05b8bb4 eeaf0000 00000001 00000000 ed9fa2b4 00000000 [ 567.892566] 1e00: 00000001 ed976938 0000ffcb 00000c90 c004c6d8 0000ffcb 7fffffff c00473e8 [ 567.900747] 1e20: ed983c80 ed976880 00000000 00000000 00000000 eea03780 eeaf0000 00000000 [ 567.908927] 1e40: eeaf1e6c eeaf1e50 c040ec5c c03e8228 00000000 00000000 eeaf1eec 00000000 [ 567.917107] 1e60: eeaf1e7c eeaf1e70 c038c308 c040ebd4 eeaf1ed4 eeaf1e80 c038c3a4 c038c2f8 [ 567.925287] 1e80: c0050004 00000000 00000000 00000001 00000c90 00000fb0 eeaf1ee4 00000001 [ 567.933467] 1ea0: 00000000 00000000 00000000 eeaf1f00 afb50401 eea03780 eeaf1f80 00000000 [ 567.941647] 1ec0: 00000000 c000fae4 eeaf1f3c eeaf1ed8 c00cfe84 c038c324 00001c40 ef0a4000 [ 567.949828] 1ee0: eeaf1f14 bef469bc 00001c40 00000001 00000000 00001c40 eeaf1ee4 00000001 [ 567.958008] 1f00: eea03780 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 567.966189] 1f20: eea03780 00001c40 bef469bc eeaf1f80 eeaf1f4c eeaf1f40 c00cfedc c00cfe08 [ 567.974369] 1f40: eeaf1f7c eeaf1f50 c00d0688 c00cfeb4 00000000 00000000 eeaf1f7c eea03780 [ 567.982550] 1f60: eea03780 00001c40 bef469bc c000fae4 eeaf1fa4 eeaf1f80 c00d0f64 c00d05fc [ 567.990730] 1f80: 00000000 00000000 00000004 0002a1e8 b6f94598 00000004 00000000 eeaf1fa8 [ 567.998910] 1fa0: c000f920 c00d0f24 00000004 0002a1e8 00000004 bef469bc 00001c40 bef489bc [ 568.007091] 1fc0: 00000004 0002a1e8 b6f94598 00000004 00001c40 0000018d 0002a1f0 00000003 [ 568.015271] 1fe0: 00000000 bef468f4 00014a57 b6ecf4d6 40030030 00000004 00000000 00000000 [ 568.023447] Backtrace: [ 568.025916] [] (__rmqueue) from [] (get_page_from_freelist+0x724/0x914) [ 568.034267] r10:c05d6d40 r9:00000008 r8:6104de4b r7:c0513428 r6:c0513428 r5:c051343c [ 568.042164] r4:eeaf1d54 [ 568.044716] [] (get_page_from_freelist) from [] (__alloc_pages_nodemask+0xd8/0x898) [ 568.054108] r10:00000000 r9:eeaf1e84 r8:6104de4b r7:0000ffcb r6:c05d77c0 r5:00000003 [ 568.062004] r4:020052c0 [ 568.064566] [] (__alloc_pages_nodemask) from [] (skb_page_frag_refill+0x70/0xcc) [ 568.073697] r10:00000000 r9:eeaf1e84 r8:6104de4b r7:0000ffcb r6:00000fb0 r5:024000c0 [ 568.081593] r4:ed9fa2b4 [ 568.084145] [] (skb_page_frag_refill) from [] (sk_page_frag_refill+0x1c/0x74) [ 568.093016] r5:ed976880 r4:ed976880 [ 568.096627] [] (sk_page_frag_refill) from [] (tcp_sendmsg+0x1e0/0xa68) [ 568.104890] r5:ed976880 r4:eaf60600 [ 568.108507] [] (tcp_sendmsg) from [] (inet_sendmsg+0x94/0xc8) [ 568.115989] r10:00000000 r9:eeaf0000 r8:eea03780 r7:00000000 r6:00000000 r5:00000000 [ 568.123884] r4:ed976880 [ 568.126436] [] (inet_sendmsg) from [] (sock_sendmsg+0x1c/0x2c) [ 568.134004] r5:00000000 r4:eeaf1eec [ 568.137610] [] (sock_sendmsg) from [] (sock_write_iter+0x8c/0xc0) [ 568.145448] [] (sock_write_iter) from [] (new_sync_write+0x88/0xac) [ 568.153450] r8:c000fae4 r7:00000000 r6:00000000 r5:eeaf1f80 r4:eea03780 [ 568.160221] [] (new_sync_write) from [] (__vfs_write+0x34/0x40) [ 568.167877] r7:eeaf1f80 r6:bef469bc r5:00001c40 r4:eea03780 [ 568.173592] [] (__vfs_write) from [] (vfs_write+0x98/0x16c) [ 568.180905] [] (vfs_write) from [] (SyS_write+0x4c/0xa8) [ 568.187953] r8:c000fae4 r7:bef469bc r6:00001c40 r5:eea03780 r4:eea03780 [ 568.194730] [] (SyS_write) from [] (ret_fast_syscall+0x0/0x3c) [ 568.202299] r7:00000004 r6:b6f94598 r5:0002a1e8 r4:00000004 [ 568.208014] Code: e3a04c01 e157000e e1a02102 e3a0cc02 (e5801004) [ 568.214113] ---[ end trace a72ad5170492b3b2 ]---