From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id D337CE009E5; Fri, 22 May 2015 05:52:43 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,HTML_MESSAGE, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [85.31.212.143 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 HTML_MESSAGE BODY: HTML included in message Received: from fx803.security-mail.net (smtpout140.security-mail.net [85.31.212.143]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 51F92E00974 for ; Fri, 22 May 2015 05:52:38 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by fx803.security-mail.net (MTA) with SMTP id 846293B086CE for ; Fri, 22 May 2015 14:52:34 +0200 (CEST) Received: from fx803 (localhost [127.0.0.1]) by fx803.security-mail.net (MTA) with ESMTP id 7FDA63B08654 for ; Fri, 22 May 2015 14:52:34 +0200 (CEST) X-Virus-Scanned: E-securemail x-secugrey: score=-10 x-secugrey: filter=out_default,id=20150522145234-15772-00005,score=-20 Received: from cg92.security-mail.net (cg92.security-mail.net [172.16.248.92]) by fx803.security-mail.net (MTA) with ESMTPS id 05A663B08638 for ; Fri, 22 May 2015 14:52:34 +0200 (CEST) Received: by cg92.security-mail.net (MTA, from userid 0) id B4949A4CD; Fri, 22 May 2015 14:52:33 +0200 (CEST) Received: from [89.91.77.218] (account yannick.calmettes@analogway.com HELO [192.168.0.39]) by mails.optimails.com (CommuniGate Pro SMTP 6.0.11) with ESMTPSA id 1838101028 for meta-freescale@yoctoproject.org; Fri, 22 May 2015 14:52:33 +0200 Message-ID: <555F252C.80008@analogway.com> Date: Fri, 22 May 2015 14:46:36 +0200 From: Yannick Calmettes User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: meta-freescale@yoctoproject.org References: <555D8CE7.3090800@analogway.com> In-Reply-To: <555D8CE7.3090800@analogway.com> X-Virus-Scanned: by Security-Mail Subject: Re: 3.14.28 : Unable to handle kernel paging request at virtual address X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 May 2015 12:52:43 -0000 Content-Type: multipart/alternative; boundary="------------080607050801090404070706" --------------080607050801090404070706 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit It seems that I have screwed up when I have merged my own kernel config from 3.10.53 to my new one in 3.14.28. I don't understand how but I have deleted CONFIG_CMA flag that enables continuous memory allocator. It seems to be the origin of the bug. Yannick ** Le 21/05/2015 09:44, Yannick Calmettes a écrit : > Dear all, > > I'm encountering big problems with 3.14.28 when I try to debug my QT > apps with GDB. With 3.10.53 I have no problems with the same apps. > It seems that when I start a debug session sometimes (not every time > but maybe 1 of 2) I have a "Unable to handle kernel paging request at > virtual address" error that is raised by a process (not necesseraly > the QT apps), in this log it was HTOP that was running on a SSH terminal. > > The trace is quite long and not sure it can help. I'm on it since > several days, any help will be welcome. Thank you in advance : > > Unable to handle kernel paging request at virtual address ff8c8b8b > Unable to handle kernel paging request at virtual address 7f0eb630 > pgd = bd6c8000 > [7f0eb630] *pgd=4ce88811, *pte=00000000, *ppte=00000000 > Internal error: Oops: 7 [#1] PREEMPT SMP ARM > Modules linked in: evbug > CPU: 0 PID: 1177 Comm: htop Not tainted 3.14.28-1.0.0_ga+g91cf351 #1 > task: bc68db00 ti: bd6b6000 task.ti: bd6b6000 > PC is at task_rq_lock+0x38/0x7c > LR is at _raw_spin_lock_irqsave+0x18/0x5c > pc : [<8004f030>] lr : [<80718530>] psr: 60070093 > sp : bd6b7d98 ip : 00000001 fp : bd6b7db4 > r10: ffffffff r9 : bc5ad200 r8 : 80dc8804 > r7 : bc5ad5c4 r6 : bd6b7dbc r5 : bd6b7df8 r4 : 80dbdbc0 > r3 : ff8c8b8b r2 : 0000000b r1 : 00000000 r0 : a0070093 > Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user > Control: 10c53c7d Table: 4d6c804a DAC: 00000015 > Process htop (pid: 1177, stack limit = 0xbd6b6238) > Stack: (0xbd6b7d98 to 0xbd6b8000) > 7d80: bc5ad200 bd6b7df8 > 7da0: bc5ad200 bc634c40 00000001 00000001 bd6b7ddc 8005214c 80e702dc > a0070093 > 7dc0: bc5ad200 bd6b7df8 bc5ad200 bc634c40 00000001 00000001 bc3ad8c0 > 800562e8 > 7de0: bc211180 80125ff4 bd6b7e9c bd6b7e98 bc5ad200 80056414 00000000 > 00000001 > 7e00: 00000000 00000000 bc7bf300 bc5ad200 00000000 8012a344 bd6b7ef0 > 00000000 > 7e20: bd6b7ef0 80dd2df0 00000097 00000000 bc2ca548 00000000 00000000 > 00000000 > 7e40: 00000000 00000000 00000053 00000001 00000000 802c2850 176d180b > 00000004 > 7e60: bc69e01b ba3a2020 bc490400 ba001088 ba0010d8 bd6b6000 ffffffff > ffffffff > 7e80: 00000000 00000000 ff8c8b8b 002e0000 ff8c8b8b 00000ff0 00000000 > 00000000 > 7ea0: 60070013 bc5ad430 00000000 00000000 80000000 00000001 76656475 > 00000064 > 7ec0: 00000000 00000000 00000001 bc5ad200 ba3a2020 bc490400 bc7bf300 > 80dd2df0 > 7ee0: bd6b7f88 bd6b7f28 00000800 8012abe4 00000001 bc7bf300 ba3a2020 > 80126038 > 7f00: bc7bf300 00000001 00000000 00000001 bc211180 800f3c80 00000002 > 00029558 > 7f20: bc7bf330 00000000 00000000 00000000 00000000 800ee45c 3ea19000 > 00029558 > 7f40: bd6b7f88 bc211180 00029558 8000e624 bd6b6000 00000000 01aea440 > 800d4eb8 > 7f60: 01aea440 800d4474 00000000 bc211180 bc211180 00000800 00029558 > 8000e624 > 7f80: bd6b6000 800d5554 00000000 00000000 00000000 01b00250 00000800 > 00029558 > 7fa0: 00000003 8000e4a0 01b00250 00000800 00000004 00029558 00000800 > 7ed9d577 > 7fc0: 01b00250 00000800 00029558 00000003 00000004 01a86088 7ed9d408 > 01aea440 > 7fe0: 00000000 7ed9d374 00016f68 76e263ac 40070010 00000004 4fffd821 > 4fffdc21 > [<8004f030>] (task_rq_lock) from [<8005214c>] > (task_sched_runtime+0x18/0x98) > [<8005214c>] (task_sched_runtime) from [<800562e8>] > (thread_group_cputime+0x6c/0xa0) > [<800562e8>] (thread_group_cputime) from [<80056414>] > (thread_group_cputime_adjusted+0x1c/0x3c) > [<80056414>] (thread_group_cputime_adjusted) from [<8012a344>] > (do_task_stat+0x794/0x91c) > [<8012a344>] (do_task_stat) from [<8012abe4>] (proc_tgid_stat+0x14/0x1c) > [<8012abe4>] (proc_tgid_stat) from [<80126038>] > (proc_single_show+0x44/0x8c) > [<80126038>] (proc_single_show) from [<800f3c80>] (seq_read+0x1ec/0x4a0) > [<800f3c80>] (seq_read) from [<800d4eb8>] (vfs_read+0x94/0x13c) > [<800d4eb8>] (vfs_read) from [<800d5554>] (SyS_read+0x44/0x9c) > [<800d5554>] (SyS_read) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30) > Code: eb1b253c e5860000 e5993004 e5933014 (e7985103) > ---[ end trace e9a7f180b41e8798 ]--- > note: htop[1177] exited with preempt_count 2 > Unable to handle kernel paging request at virtual address ff8c8bbb > pgd = bd6c8000 > [ff8c8bbb] *pgd=00000000 > Internal error: Oops: 5 [#2] PREEMPT SMP ARM > Modules linked in: evbug > CPU: 0 PID: 1177 Comm: htop Tainted: G D 3.14.28-1.0.0_ga+g91cf351 #1 > task: bc68db00 ti: bd6b6000 task.ti: bd6b6000 > PC is at filp_close+0x1c/0x7c > LR is at put_files_struct+0x8c/0xd8 > pc : [<800d2f3c>] lr : [<800ee2dc>] psr: a0070113 > sp : bd6b7b20 ip : 00000000 fp : 80e28fc4 > r10: bca5ec78 r9 : bd2ee780 r8 : 00000000 > r7 : bc891e00 r6 : bc891e00 r5 : bca93c00 r4 : ff000000 > r3 : ff8c8b8b r2 : bca93c00 r1 : bc891e00 r0 : bca93c00 > Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user > Control: 10c53c7d Table: 4d6c804a DAC: 00000015 > Process htop (pid: 1177, stack limit = 0xbd6b6238) > Stack: (0xbd6b7b20 to 0xbd6b8000) > 7b20: 00000003 0000000c 00000000 800ee2dc 00000000 bc68dec0 bc68db00 > 0000000b > 7b40: bca5ec40 bd6b6010 00000000 8002e8c8 8004f032 00000001 80e28fc4 > 80711020 > 7b60: 80c5d7e4 80dd3684 00000003 80dccdb0 bd6b6000 0000000b 8004f034 > 00000001 > 7b80: 8004f032 80c56f08 80e28fc4 8001193c bd6b6238 0000000b 00000000 > 60070193 > 7ba0: 80dccdb0 00000000 7f000000 00000008 65e2dbfc 32623162 20633335 > 36383565 > 7bc0: 30303030 39356520 30303339 35652034 30333339 28203431 38393765 > 33303135 > 7be0: bd002029 80711020 80cb4400 7f0eb630 00000007 bd6b7d50 bca5ec40 > 00000007 > 7c00: 7f0eb630 bc68db00 bd6b7db4 80710dfc bca5ec40 8001a420 80dc9510 > 80660c50 > 7c20: bff80520 80718750 bc001e00 800d0588 bc000f48 bc001e00 00000000 > bd6b6030 > 7c40: 80150015 bf7d9300 00000020 bd6b6000 bca8b200 80dc9520 80dc20c0 > 80150015 > 7c60: bcbf9300 0000000a 80dc84c0 00000020 c0a50000 bcbf9300 bc2ca000 > 80150015 > 7c80: bc2ca000 80718530 8001db20 80dcd868 00000007 8001a1bc 7f0eb630 > bd6b7d50 > 7ca0: bc5ad200 ffffffff bd6b7db4 800083bc 00000000 800d08cc 60070113 > 00000020 > 7cc0: bd6b6038 bf7d9300 bf7d7200 bc2ca548 0000012c 00150015 80dc20c0 > ffffb4fb > 7ce0: bff7dca0 800cfe84 bc365180 80150014 01232054 bd6b6028 bc69e000 > bd6b7d3e > 7d00: 00000000 80150014 bd6b7e14 00000000 bc001e00 bd6b6000 3ea19000 > 00000020 > 7d20: 000b7c0c 80150014 00000100 80dc8804 bd6b6000 00000001 8004f030 > 60070093 > 7d40: ffffffff bd6b7d84 80dc8804 80012198 a0070093 00000000 0000000b > ff8c8b8b > 7d60: 80dbdbc0 bd6b7df8 bd6b7dbc bc5ad5c4 80dc8804 bc5ad200 ffffffff > bd6b7db4 > 7d80: 00000001 bd6b7d98 80718530 8004f030 60070093 ffffffff bc5ad200 > bd6b7df8 > 7da0: bc5ad200 bc634c40 00000001 00000001 bd6b7ddc 8005214c 80e702dc > a0070093 > 7dc0: bc5ad200 bd6b7df8 bc5ad200 bc634c40 00000001 00000001 bc3ad8c0 > 800562e8 > 7de0: bc211180 80125ff4 bd6b7e9c bd6b7e98 bc5ad200 80056414 00000000 > 00000001 > 7e00: 00000000 00000000 bc7bf300 bc5ad200 00000000 8012a344 bd6b7ef0 > 00000000 > 7e20: bd6b7ef0 80dd2df0 00000097 00000000 bc2ca548 00000000 00000000 > 00000000 > 7e40: 00000000 00000000 00000053 00000001 00000000 802c2850 176d180b > 00000004 > 7e60: bc69e01b ba3a2020 bc490400 ba001088 ba0010d8 bd6b6000 ffffffff > ffffffff > 7e80: 00000000 00000000 ff8c8b8b 002e0000 ff8c8b8b 00000ff0 00000000 > 00000000 > 7ea0: 60070013 bc5ad430 00000000 00000000 80000000 00000001 76656475 > 00000064 > 7ec0: 00000000 00000000 00000001 bc5ad200 ba3a2020 bc490400 bc7bf300 > 80dd2df0 > 7ee0: bd6b7f88 bd6b7f28 00000800 8012abe4 00000001 bc7bf300 ba3a2020 > 80126038 > 7f00: bc7bf300 00000001 00000000 00000001 bc211180 800f3c80 00000002 > 00029558 > 7f20: bc7bf330 00000000 00000000 00000000 00000000 800ee45c 3ea19000 > 00029558 > 7f40: bd6b7f88 bc211180 00029558 8000e624 bd6b6000 00000000 01aea440 > 800d4eb8 > 7f60: 01aea440 800d4474 00000000 bc211180 bc211180 00000800 00029558 > 8000e624 > 7f80: bd6b6000 800d5554 00000000 00000000 00000000 01b00250 00000800 > 00029558 > 7fa0: 00000003 8000e4a0 01b00250 00000800 00000004 00029558 00000800 > 7ed9d577 > 7fc0: 01b00250 00000800 00029558 00000003 00000004 01a86088 7ed9d408 > 01aea440 > 7fe0: 00000000 7ed9d374 00016f68 76e263ac 40070010 00000004 4fffd821 > 4fffdc21 > [<800d2f3c>] (filp_close) from [<800ee2dc>] (put_files_struct+0x8c/0xd8) > [<800ee2dc>] (put_files_struct) from [<8002e8c8>] (do_exit+0x294/0x924) > [<8002e8c8>] (do_exit) from [<8001193c>] (die+0x224/0x3e4) > [<8001193c>] (die) from [<80710dfc>] (__do_kernel_fault.part.11+0x64/0x74) > [<80710dfc>] (__do_kernel_fault.part.11) from [<8001a420>] > (do_page_fault+0x264/0x3e4) > [<8001a420>] (do_page_fault) from [<800083bc>] (do_DataAbort+0x38/0x98) > [<800083bc>] (do_DataAbort) from [<80012198>] (__dabt_svc+0x38/0x60) > Exception stack(0xbd6b7d50 to 0xbd6b7d98) > 7d40: a0070093 00000000 0000000b > ff8c8b8b > 7d60: 80dbdbc0 bd6b7df8 bd6b7dbc bc5ad5c4 80dc8804 bc5ad200 ffffffff > bd6b7db4 > 7d80: 00000001 bd6b7d98 80718530 8004f030 60070093 ffffffff > [<80012198>] (__dabt_svc) from [<8004f030>] (task_rq_lock+0x38/0x7c) > [<8004f030>] (task_rq_lock) from [<8005214c>] > (task_sched_runtime+0x18/0x98) > [<8005214c>] (task_sched_runtime) from [<800562e8>] > (thread_group_cputime+0x6c/0xa0) > [<800562e8>] (thread_group_cputime) from [<80056414>] > (thread_group_cputime_adjusted+0x1c/0x3c) > [<80056414>] (thread_group_cputime_adjusted) from [<8012a344>] > (do_task_stat+0x794/0x91c) > [<8012a344>] (do_task_stat) from [<8012abe4>] (proc_tgid_stat+0x14/0x1c) > [<8012abe4>] (proc_tgid_stat) from [<80126038>] > (proc_single_show+0x44/0x8c) > [<80126038>] (proc_single_show) from [<800f3c80>] (seq_read+0x1ec/0x4a0) > [<800f3c80>] (seq_read) from [<800d4eb8>] (vfs_read+0x94/0x13c) > [<800d4eb8>] (vfs_read) from [<800d5554>] (SyS_read+0x44/0x9c) > [<800d5554>] (SyS_read) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30) > Code: e3540000 0a000014 e5903014 e1a06001 (e5933030) > ---[ end trace e9a7f180b41e8799 ]--- > Fixing recursive fault but reboot is needed! > pgd = bd030000 > [ff8c8b8b] *pgd=00000000 > Internal error: Oops: 5 [#3] PREEMPT SMP ARM > Modules linked in: evbug > CPU: 1 PID: 1191 Comm: AW_APP_VARSMANA Tainted: G D > 3.14.28-1.0.0_ga+g91cf351 #1 > task: bc68d200 ti: bce92000 task.ti: bce92000 > PC is at kmem_cache_alloc+0x54/0x124 > LR is at kmem_cache_alloc+0x38/0x124 > pc : [<800d0ba0>] lr : [<800d0b84>] psr: a0000013 > sp : bce93cf0 ip : 00000000 fp : bd11c000 > r10: 00000000 r9 : 00026651 r8 : 000004d0 > r7 : 3ea21000 r6 : bce92000 r5 : bc001e00 r4 : ff8c8b8b > r3 : 00000000 r2 : 00000001 r1 : 00000001 r0 : 00000000 > Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user > Control: 10c53c7d Table: 4d03004a DAC: 00000015 > Process AW_APP_VARSMANA (pid: 1191, stack limit = 0xbce92238) > Stack: (0xbce93cf0 to 0xbce94000) > 3ce0: 00000000 00000000 0000014f > 000004d0 > 3d00: bc001e00 00000000 00000000 805991fc 00000000 0000003b ba43f700 > 00000000 > 3d20: bce92000 00000000 80060020 0000014f 00000000 805937c8 807217d4 > 00000001 > 3d40: ba43f658 80148214 00000000 bceb7664 60010013 00000001 00000003 > 0000014f > 3d60: bd11d200 00000000 0000014f bce93f7c 00000000 bd11d3f4 00000000 > 80623b1c > 3d80: bce93da0 00000003 bceb7614 0000014f bd11c000 ba36a300 00000000 > bce93e18 > 3da0: ffffff95 00000000 00000000 00000000 ffffffff ffffffff 807218e0 > 8062392c > 3dc0: 0000014f 00000000 bce93e88 ba36a300 00000000 00004040 bce93e88 > 80590144 > 3de0: 00000000 00000000 00000000 bce93e18 bc68d200 00000000 00000000 > 00000000 > 3e00: 00000000 00000000 00000000 00000000 00000000 00000000 807216e4 > 8009a1ec > 3e20: 0000003b 0000014f ba36a300 bce93f7c bce93da4 bce93f7c ba36a300 > bce93e88 > 3e40: 00000010 00000000 bce93e88 8059d048 bce93f7c 7effec3c bce93f7c > 80591460 > 3e60: bce93e68 bce93e68 bce93f10 ba43f700 bce93f38 ba43f7d4 00000041 > 8009b540 > 3e80: 00000ffa 00000000 006595e8 00000088 00658b20 000000c7 00000ffa > 00000000 > 3ea0: bce92000 4258b3de 00000000 00000001 00000068 00000041 bce93f50 > bce93f18 > 3ec0: 00000001 ba43f770 bce93f10 bca92d80 bce92000 00000000 0040a508 > 8009b7c4 > 3ee0: 00000001 80dc0aa4 bf7e1aa4 00000001 0040a508 8006e048 bca92d88 > 00000002 > 3f00: 00000041 bc4b9840 00000002 bca92d88 00000002 8010c33c bca92d88 > 00000001 > 3f20: 7efff31c 807184d8 ba4d4958 802b1a2c 00002710 ba4d4908 ba4d4958 > ba43f700 > 3f40: bcff9f00 7effec3c 00004000 ba36a300 7effec3c 00004000 00000128 > 8000e624 > 3f60: bce92000 00000000 7effec6c 80592544 bc68d5b0 00000001 fffffff7 > 00000000 > 3f80: 00000000 bce93e88 00000002 00000000 00000000 00004040 0062ccf8 > 0000000e > 3fa0: 7effec3c 8000e4a0 0062ccf8 0000000e 0000000e 7effec3c 00004000 > 00000000 > 3fc0: 0062ccf8 0000000e 7effec3c 00000128 000000c7 7effec94 7effec90 > 7effec6c > 3fe0: 00000000 7effec20 7414d4c0 76085954 80000010 0000000e 67655251 > 72616c75 > [<800d0ba0>] (kmem_cache_alloc) from [<805991fc>] (__alloc_skb+0x44/0x13c) > [<805991fc>] (__alloc_skb) from [<805937c8>] > (sock_alloc_send_pskb+0x90/0x38c) > [<805937c8>] (sock_alloc_send_pskb) from [<80623b1c>] > (unix_stream_sendmsg+0x1f0/0x390) > [<80623b1c>] (unix_stream_sendmsg) from [<80590144>] > (sock_sendmsg+0x88/0xac) > [<80590144>] (sock_sendmsg) from [<80591460>] > (___sys_sendmsg.part.34+0x284/0x290) > [<80591460>] (___sys_sendmsg.part.34) from [<80592544>] > (__sys_sendmsg+0x4c/0x7c) > [<80592544>] (__sys_sendmsg) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30) > Code: e7974004 e3540000 0a000024 e5953014 (e7947003) > ---[ end trace e9a7f180b41e879a ]--- > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=2102 jiffies, g=1764, c=1763, q=740) > INFO: Stall ended before state dump start > Unable to handle kernel paging request at virtual address ff8c8b8b > pgd = bd170000 > [ff8c8b8b] *pgd=00000000 > Internal error: Oops: 5 [#4] PREEMPT SMP ARM > Modules linked in: evbug > CPU: 1 PID: 1127 Comm: AW_APP_FRONTPAN Tainted: G D > 3.14.28-1.0.0_ga+g91cf351 #1 > task: bd0e7180 ti: bce8c000 task.ti: bce8c000 > PC is at kmem_cache_alloc+0x54/0x124 > LR is at kmem_cache_alloc+0x38/0x124 > pc : [<800d0ba0>] lr : [<800d0b84>] psr: a00f0013 > sp : bce8de58 ip : 00000041 fp : 7eaaa364 > r10: 00000000 r9 : 00026651 r8 : 000080d0 > r7 : 3ea21000 r6 : bce8c000 r5 : bc001e00 r4 : ff8c8b8b > r3 : 00000000 r2 : 00000001 r1 : 000080d0 r0 : 00000000 > Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user > Control: 10c53c7d Table: 4d17004a DAC: 00000015 > Process AW_APP_FRONTPAN (pid: 1127, stack limit = 0xbce8c238) > Stack: (0xbce8de58 to 0xbce8e000) > de40: 80dc8840 80dc2240 > de60: bd180280 80dd6900 00000000 bce8df74 bc3a1000 800d6378 00000098 > 8009b540 > de80: bce8def0 00000001 ffffff9c 800e16dc 00000098 0000001e 0000df6b > 00000000 > dea0: bce8c000 4258b412 00000000 00000000 00000068 00000098 bce8df50 > bce8df18 > dec0: 00000001 bce8df74 00000001 bc3a1000 ffffff9c 8000e624 bce8c000 > 00000000 > dee0: 7eaaa364 800e2b88 00000041 00000001 00000001 8006e048 bc3b99c8 > 00000002 > df00: 00000008 bc1b0480 00000002 bc3b99c8 00000002 8010c33c 00000001 > 807187f8 > df20: 7eaaa364 800d0b84 bd179e08 80718750 00080000 800ee45c 80e702dc > 00080000 > df40: 00000001 00080000 ffffff9c bc3a1000 00000005 00000011 ffffff9c > bc3a1000 > df60: 00000005 800d4408 764e0858 7eaaa550 009325bc 00000000 80000000 > 00000024 > df80: 00000100 00000001 00000000 00d07300 00000008 00000008 00000005 > 8000e624 > dfa0: bce8c000 8000e4a0 00d07300 00000008 75f276e4 00080000 000001b6 > 000001b6 > dfc0: 00d07300 00000008 00000008 00000005 00000000 00000000 00000000 > 7eaaa364 > dfe0: 00080000 7eaaa304 75e76474 75ecaf2c 200f0010 75f276e4 108e6978 > de285362 > [<800d0ba0>] (kmem_cache_alloc) from [<800d6378>] > (get_empty_filp+0x78/0x1bc) > [<800d6378>] (get_empty_filp) from [<800e16dc>] (path_openat+0x28/0x5cc) > [<800e16dc>] (path_openat) from [<800e2b88>] (do_filp_open+0x2c/0x88) > [<800e2b88>] (do_filp_open) from [<800d4408>] (do_sys_open+0x104/0x1c8) > [<800d4408>] (do_sys_open) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30) > Code: e7974004 e3540000 0a000024 e5953014 (e7947003) > ---[ end trace e9a7f180b41e879b ]--- > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=8407 jiffies, g=1764, c=1763, q=1031) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=14712 jiffies, g=1764, c=1763, q=1049) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=21017 jiffies, g=1764, c=1763, q=1086) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=27322 jiffies, g=1764, c=1763, q=1104) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=33627 jiffies, g=1764, c=1763, q=1122) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=39932 jiffies, g=1764, c=1763, q=1140) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, > t=46237 jiffies, g=1764, c=1763, q=1161) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 0, > t=52542 jiffies, g=1764, c=1763, q=1188) > INFO: Stall ended before state dump start > INFO: rcu_preempt detected stalls on CPUs/task > > > ** > > > > > To declare a filtering error, please use the following link : > http://f.security-mail.net/408Vvo8jC0F > > --------------080607050801090404070706 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit It seems that I have screwed up when I have merged my own kernel config from 3.10.53 to my new one in 3.14.28. I don't understand how but I have deleted CONFIG_CMA flag that enables continuous memory allocator. It seems to be the origin of the bug.

Yannick

Le 21/05/2015 09:44, Yannick Calmettes a écrit :
Dear all,

I'm encountering big problems with 3.14.28 when I try to debug my QT apps with GDB. With 3.10.53 I have no problems with the same apps.
It seems that when I start a debug session sometimes (not every time but maybe 1 of 2) I have a "Unable to handle kernel paging request at virtual address" error that is raised by a process (not necesseraly the QT apps), in this log it was HTOP that was running on a SSH terminal.

The trace is quite long and not sure it can help. I'm on it since several days, any help will be welcome. Thank you in advance :

Unable to handle kernel paging request at virtual address ff8c8b8b
Unable to handle kernel paging request at virtual address 7f0eb630
pgd = bd6c8000
[7f0eb630] *pgd=4ce88811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] PREEMPT SMP ARM
Modules linked in: evbug
CPU: 0 PID: 1177 Comm: htop Not tainted 3.14.28-1.0.0_ga+g91cf351 #1
task: bc68db00 ti: bd6b6000 task.ti: bd6b6000
PC is at task_rq_lock+0x38/0x7c
LR is at _raw_spin_lock_irqsave+0x18/0x5c
pc : [<8004f030>]    lr : [<80718530>]    psr: 60070093
sp : bd6b7d98  ip : 00000001  fp : bd6b7db4
r10: ffffffff  r9 : bc5ad200  r8 : 80dc8804
r7 : bc5ad5c4  r6 : bd6b7dbc  r5 : bd6b7df8  r4 : 80dbdbc0
r3 : ff8c8b8b  r2 : 0000000b  r1 : 00000000  r0 : a0070093
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 4d6c804a  DAC: 00000015
Process htop (pid: 1177, stack limit = 0xbd6b6238)
Stack: (0xbd6b7d98 to 0xbd6b8000)
7d80:                                                       bc5ad200 bd6b7df8
7da0: bc5ad200 bc634c40 00000001 00000001 bd6b7ddc 8005214c 80e702dc a0070093
7dc0: bc5ad200 bd6b7df8 bc5ad200 bc634c40 00000001 00000001 bc3ad8c0 800562e8
7de0: bc211180 80125ff4 bd6b7e9c bd6b7e98 bc5ad200 80056414 00000000 00000001
7e00: 00000000 00000000 bc7bf300 bc5ad200 00000000 8012a344 bd6b7ef0 00000000
7e20: bd6b7ef0 80dd2df0 00000097 00000000 bc2ca548 00000000 00000000 00000000
7e40: 00000000 00000000 00000053 00000001 00000000 802c2850 176d180b 00000004
7e60: bc69e01b ba3a2020 bc490400 ba001088 ba0010d8 bd6b6000 ffffffff ffffffff
7e80: 00000000 00000000 ff8c8b8b 002e0000 ff8c8b8b 00000ff0 00000000 00000000
7ea0: 60070013 bc5ad430 00000000 00000000 80000000 00000001 76656475 00000064
7ec0: 00000000 00000000 00000001 bc5ad200 ba3a2020 bc490400 bc7bf300 80dd2df0
7ee0: bd6b7f88 bd6b7f28 00000800 8012abe4 00000001 bc7bf300 ba3a2020 80126038
7f00: bc7bf300 00000001 00000000 00000001 bc211180 800f3c80 00000002 00029558
7f20: bc7bf330 00000000 00000000 00000000 00000000 800ee45c 3ea19000 00029558
7f40: bd6b7f88 bc211180 00029558 8000e624 bd6b6000 00000000 01aea440 800d4eb8
7f60: 01aea440 800d4474 00000000 bc211180 bc211180 00000800 00029558 8000e624
7f80: bd6b6000 800d5554 00000000 00000000 00000000 01b00250 00000800 00029558
7fa0: 00000003 8000e4a0 01b00250 00000800 00000004 00029558 00000800 7ed9d577
7fc0: 01b00250 00000800 00029558 00000003 00000004 01a86088 7ed9d408 01aea440
7fe0: 00000000 7ed9d374 00016f68 76e263ac 40070010 00000004 4fffd821 4fffdc21
[<8004f030>] (task_rq_lock) from [<8005214c>] (task_sched_runtime+0x18/0x98)
[<8005214c>] (task_sched_runtime) from [<800562e8>] (thread_group_cputime+0x6c/0xa0)
[<800562e8>] (thread_group_cputime) from [<80056414>] (thread_group_cputime_adjusted+0x1c/0x3c)
[<80056414>] (thread_group_cputime_adjusted) from [<8012a344>] (do_task_stat+0x794/0x91c)
[<8012a344>] (do_task_stat) from [<8012abe4>] (proc_tgid_stat+0x14/0x1c)
[<8012abe4>] (proc_tgid_stat) from [<80126038>] (proc_single_show+0x44/0x8c)
[<80126038>] (proc_single_show) from [<800f3c80>] (seq_read+0x1ec/0x4a0)
[<800f3c80>] (seq_read) from [<800d4eb8>] (vfs_read+0x94/0x13c)
[<800d4eb8>] (vfs_read) from [<800d5554>] (SyS_read+0x44/0x9c)
[<800d5554>] (SyS_read) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30)
Code: eb1b253c e5860000 e5993004 e5933014 (e7985103)
---[ end trace e9a7f180b41e8798 ]---
note: htop[1177] exited with preempt_count 2
Unable to handle kernel paging request at virtual address ff8c8bbb
pgd = bd6c8000
[ff8c8bbb] *pgd=00000000
Internal error: Oops: 5 [#2] PREEMPT SMP ARM
Modules linked in: evbug
CPU: 0 PID: 1177 Comm: htop Tainted: G      D      3.14.28-1.0.0_ga+g91cf351 #1
task: bc68db00 ti: bd6b6000 task.ti: bd6b6000
PC is at filp_close+0x1c/0x7c
LR is at put_files_struct+0x8c/0xd8
pc : [<800d2f3c>]    lr : [<800ee2dc>]    psr: a0070113
sp : bd6b7b20  ip : 00000000  fp : 80e28fc4
r10: bca5ec78  r9 : bd2ee780  r8 : 00000000
r7 : bc891e00  r6 : bc891e00  r5 : bca93c00  r4 : ff000000
r3 : ff8c8b8b  r2 : bca93c00  r1 : bc891e00  r0 : bca93c00
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 4d6c804a  DAC: 00000015
Process htop (pid: 1177, stack limit = 0xbd6b6238)
Stack: (0xbd6b7b20 to 0xbd6b8000)
7b20: 00000003 0000000c 00000000 800ee2dc 00000000 bc68dec0 bc68db00 0000000b
7b40: bca5ec40 bd6b6010 00000000 8002e8c8 8004f032 00000001 80e28fc4 80711020
7b60: 80c5d7e4 80dd3684 00000003 80dccdb0 bd6b6000 0000000b 8004f034 00000001
7b80: 8004f032 80c56f08 80e28fc4 8001193c bd6b6238 0000000b 00000000 60070193
7ba0: 80dccdb0 00000000 7f000000 00000008 65e2dbfc 32623162 20633335 36383565
7bc0: 30303030 39356520 30303339 35652034 30333339 28203431 38393765 33303135
7be0: bd002029 80711020 80cb4400 7f0eb630 00000007 bd6b7d50 bca5ec40 00000007
7c00: 7f0eb630 bc68db00 bd6b7db4 80710dfc bca5ec40 8001a420 80dc9510 80660c50
7c20: bff80520 80718750 bc001e00 800d0588 bc000f48 bc001e00 00000000 bd6b6030
7c40: 80150015 bf7d9300 00000020 bd6b6000 bca8b200 80dc9520 80dc20c0 80150015
7c60: bcbf9300 0000000a 80dc84c0 00000020 c0a50000 bcbf9300 bc2ca000 80150015
7c80: bc2ca000 80718530 8001db20 80dcd868 00000007 8001a1bc 7f0eb630 bd6b7d50
7ca0: bc5ad200 ffffffff bd6b7db4 800083bc 00000000 800d08cc 60070113 00000020
7cc0: bd6b6038 bf7d9300 bf7d7200 bc2ca548 0000012c 00150015 80dc20c0 ffffb4fb
7ce0: bff7dca0 800cfe84 bc365180 80150014 01232054 bd6b6028 bc69e000 bd6b7d3e
7d00: 00000000 80150014 bd6b7e14 00000000 bc001e00 bd6b6000 3ea19000 00000020
7d20: 000b7c0c 80150014 00000100 80dc8804 bd6b6000 00000001 8004f030 60070093
7d40: ffffffff bd6b7d84 80dc8804 80012198 a0070093 00000000 0000000b ff8c8b8b
7d60: 80dbdbc0 bd6b7df8 bd6b7dbc bc5ad5c4 80dc8804 bc5ad200 ffffffff bd6b7db4
7d80: 00000001 bd6b7d98 80718530 8004f030 60070093 ffffffff bc5ad200 bd6b7df8
7da0: bc5ad200 bc634c40 00000001 00000001 bd6b7ddc 8005214c 80e702dc a0070093
7dc0: bc5ad200 bd6b7df8 bc5ad200 bc634c40 00000001 00000001 bc3ad8c0 800562e8
7de0: bc211180 80125ff4 bd6b7e9c bd6b7e98 bc5ad200 80056414 00000000 00000001
7e00: 00000000 00000000 bc7bf300 bc5ad200 00000000 8012a344 bd6b7ef0 00000000
7e20: bd6b7ef0 80dd2df0 00000097 00000000 bc2ca548 00000000 00000000 00000000
7e40: 00000000 00000000 00000053 00000001 00000000 802c2850 176d180b 00000004
7e60: bc69e01b ba3a2020 bc490400 ba001088 ba0010d8 bd6b6000 ffffffff ffffffff
7e80: 00000000 00000000 ff8c8b8b 002e0000 ff8c8b8b 00000ff0 00000000 00000000
7ea0: 60070013 bc5ad430 00000000 00000000 80000000 00000001 76656475 00000064
7ec0: 00000000 00000000 00000001 bc5ad200 ba3a2020 bc490400 bc7bf300 80dd2df0
7ee0: bd6b7f88 bd6b7f28 00000800 8012abe4 00000001 bc7bf300 ba3a2020 80126038
7f00: bc7bf300 00000001 00000000 00000001 bc211180 800f3c80 00000002 00029558
7f20: bc7bf330 00000000 00000000 00000000 00000000 800ee45c 3ea19000 00029558
7f40: bd6b7f88 bc211180 00029558 8000e624 bd6b6000 00000000 01aea440 800d4eb8
7f60: 01aea440 800d4474 00000000 bc211180 bc211180 00000800 00029558 8000e624
7f80: bd6b6000 800d5554 00000000 00000000 00000000 01b00250 00000800 00029558
7fa0: 00000003 8000e4a0 01b00250 00000800 00000004 00029558 00000800 7ed9d577
7fc0: 01b00250 00000800 00029558 00000003 00000004 01a86088 7ed9d408 01aea440
7fe0: 00000000 7ed9d374 00016f68 76e263ac 40070010 00000004 4fffd821 4fffdc21
[<800d2f3c>] (filp_close) from [<800ee2dc>] (put_files_struct+0x8c/0xd8)
[<800ee2dc>] (put_files_struct) from [<8002e8c8>] (do_exit+0x294/0x924)
[<8002e8c8>] (do_exit) from [<8001193c>] (die+0x224/0x3e4)
[<8001193c>] (die) from [<80710dfc>] (__do_kernel_fault.part.11+0x64/0x74)
[<80710dfc>] (__do_kernel_fault.part.11) from [<8001a420>] (do_page_fault+0x264/0x3e4)
[<8001a420>] (do_page_fault) from [<800083bc>] (do_DataAbort+0x38/0x98)
[<800083bc>] (do_DataAbort) from [<80012198>] (__dabt_svc+0x38/0x60)
Exception stack(0xbd6b7d50 to 0xbd6b7d98)
7d40:                                     a0070093 00000000 0000000b ff8c8b8b
7d60: 80dbdbc0 bd6b7df8 bd6b7dbc bc5ad5c4 80dc8804 bc5ad200 ffffffff bd6b7db4
7d80: 00000001 bd6b7d98 80718530 8004f030 60070093 ffffffff
[<80012198>] (__dabt_svc) from [<8004f030>] (task_rq_lock+0x38/0x7c)
[<8004f030>] (task_rq_lock) from [<8005214c>] (task_sched_runtime+0x18/0x98)
[<8005214c>] (task_sched_runtime) from [<800562e8>] (thread_group_cputime+0x6c/0xa0)
[<800562e8>] (thread_group_cputime) from [<80056414>] (thread_group_cputime_adjusted+0x1c/0x3c)
[<80056414>] (thread_group_cputime_adjusted) from [<8012a344>] (do_task_stat+0x794/0x91c)
[<8012a344>] (do_task_stat) from [<8012abe4>] (proc_tgid_stat+0x14/0x1c)
[<8012abe4>] (proc_tgid_stat) from [<80126038>] (proc_single_show+0x44/0x8c)
[<80126038>] (proc_single_show) from [<800f3c80>] (seq_read+0x1ec/0x4a0)
[<800f3c80>] (seq_read) from [<800d4eb8>] (vfs_read+0x94/0x13c)
[<800d4eb8>] (vfs_read) from [<800d5554>] (SyS_read+0x44/0x9c)
[<800d5554>] (SyS_read) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30)
Code: e3540000 0a000014 e5903014 e1a06001 (e5933030)
---[ end trace e9a7f180b41e8799 ]---
Fixing recursive fault but reboot is needed!
pgd = bd030000
[ff8c8b8b] *pgd=00000000
Internal error: Oops: 5 [#3] PREEMPT SMP ARM
Modules linked in: evbug
CPU: 1 PID: 1191 Comm: AW_APP_VARSMANA Tainted: G      D      3.14.28-1.0.0_ga+g91cf351 #1
task: bc68d200 ti: bce92000 task.ti: bce92000
PC is at kmem_cache_alloc+0x54/0x124
LR is at kmem_cache_alloc+0x38/0x124
pc : [<800d0ba0>]    lr : [<800d0b84>]    psr: a0000013
sp : bce93cf0  ip : 00000000  fp : bd11c000
r10: 00000000  r9 : 00026651  r8 : 000004d0
r7 : 3ea21000  r6 : bce92000  r5 : bc001e00  r4 : ff8c8b8b
r3 : 00000000  r2 : 00000001  r1 : 00000001  r0 : 00000000
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 4d03004a  DAC: 00000015
Process AW_APP_VARSMANA (pid: 1191, stack limit = 0xbce92238)
Stack: (0xbce93cf0 to 0xbce94000)
3ce0:                                     00000000 00000000 0000014f 000004d0
3d00: bc001e00 00000000 00000000 805991fc 00000000 0000003b ba43f700 00000000
3d20: bce92000 00000000 80060020 0000014f 00000000 805937c8 807217d4 00000001
3d40: ba43f658 80148214 00000000 bceb7664 60010013 00000001 00000003 0000014f
3d60: bd11d200 00000000 0000014f bce93f7c 00000000 bd11d3f4 00000000 80623b1c
3d80: bce93da0 00000003 bceb7614 0000014f bd11c000 ba36a300 00000000 bce93e18
3da0: ffffff95 00000000 00000000 00000000 ffffffff ffffffff 807218e0 8062392c
3dc0: 0000014f 00000000 bce93e88 ba36a300 00000000 00004040 bce93e88 80590144
3de0: 00000000 00000000 00000000 bce93e18 bc68d200 00000000 00000000 00000000
3e00: 00000000 00000000 00000000 00000000 00000000 00000000 807216e4 8009a1ec
3e20: 0000003b 0000014f ba36a300 bce93f7c bce93da4 bce93f7c ba36a300 bce93e88
3e40: 00000010 00000000 bce93e88 8059d048 bce93f7c 7effec3c bce93f7c 80591460
3e60: bce93e68 bce93e68 bce93f10 ba43f700 bce93f38 ba43f7d4 00000041 8009b540
3e80: 00000ffa 00000000 006595e8 00000088 00658b20 000000c7 00000ffa 00000000
3ea0: bce92000 4258b3de 00000000 00000001 00000068 00000041 bce93f50 bce93f18
3ec0: 00000001 ba43f770 bce93f10 bca92d80 bce92000 00000000 0040a508 8009b7c4
3ee0: 00000001 80dc0aa4 bf7e1aa4 00000001 0040a508 8006e048 bca92d88 00000002
3f00: 00000041 bc4b9840 00000002 bca92d88 00000002 8010c33c bca92d88 00000001
3f20: 7efff31c 807184d8 ba4d4958 802b1a2c 00002710 ba4d4908 ba4d4958 ba43f700
3f40: bcff9f00 7effec3c 00004000 ba36a300 7effec3c 00004000 00000128 8000e624
3f60: bce92000 00000000 7effec6c 80592544 bc68d5b0 00000001 fffffff7 00000000
3f80: 00000000 bce93e88 00000002 00000000 00000000 00004040 0062ccf8 0000000e
3fa0: 7effec3c 8000e4a0 0062ccf8 0000000e 0000000e 7effec3c 00004000 00000000
3fc0: 0062ccf8 0000000e 7effec3c 00000128 000000c7 7effec94 7effec90 7effec6c
3fe0: 00000000 7effec20 7414d4c0 76085954 80000010 0000000e 67655251 72616c75
[<800d0ba0>] (kmem_cache_alloc) from [<805991fc>] (__alloc_skb+0x44/0x13c)
[<805991fc>] (__alloc_skb) from [<805937c8>] (sock_alloc_send_pskb+0x90/0x38c)
[<805937c8>] (sock_alloc_send_pskb) from [<80623b1c>] (unix_stream_sendmsg+0x1f0/0x390)
[<80623b1c>] (unix_stream_sendmsg) from [<80590144>] (sock_sendmsg+0x88/0xac)
[<80590144>] (sock_sendmsg) from [<80591460>] (___sys_sendmsg.part.34+0x284/0x290)
[<80591460>] (___sys_sendmsg.part.34) from [<80592544>] (__sys_sendmsg+0x4c/0x7c)
[<80592544>] (__sys_sendmsg) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30)
Code: e7974004 e3540000 0a000024 e5953014 (e7947003)
---[ end trace e9a7f180b41e879a ]---
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=2102 jiffies, g=1764, c=1763, q=740)
INFO: Stall ended before state dump start
Unable to handle kernel paging request at virtual address ff8c8b8b
pgd = bd170000
[ff8c8b8b] *pgd=00000000
Internal error: Oops: 5 [#4] PREEMPT SMP ARM
Modules linked in: evbug
CPU: 1 PID: 1127 Comm: AW_APP_FRONTPAN Tainted: G      D      3.14.28-1.0.0_ga+g91cf351 #1
task: bd0e7180 ti: bce8c000 task.ti: bce8c000
PC is at kmem_cache_alloc+0x54/0x124
LR is at kmem_cache_alloc+0x38/0x124
pc : [<800d0ba0>]    lr : [<800d0b84>]    psr: a00f0013
sp : bce8de58  ip : 00000041  fp : 7eaaa364
r10: 00000000  r9 : 00026651  r8 : 000080d0
r7 : 3ea21000  r6 : bce8c000  r5 : bc001e00  r4 : ff8c8b8b
r3 : 00000000  r2 : 00000001  r1 : 000080d0  r0 : 00000000
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 4d17004a  DAC: 00000015
Process AW_APP_FRONTPAN (pid: 1127, stack limit = 0xbce8c238)
Stack: (0xbce8de58 to 0xbce8e000)
de40:                                                       80dc8840 80dc2240
de60: bd180280 80dd6900 00000000 bce8df74 bc3a1000 800d6378 00000098 8009b540
de80: bce8def0 00000001 ffffff9c 800e16dc 00000098 0000001e 0000df6b 00000000
dea0: bce8c000 4258b412 00000000 00000000 00000068 00000098 bce8df50 bce8df18
dec0: 00000001 bce8df74 00000001 bc3a1000 ffffff9c 8000e624 bce8c000 00000000
dee0: 7eaaa364 800e2b88 00000041 00000001 00000001 8006e048 bc3b99c8 00000002
df00: 00000008 bc1b0480 00000002 bc3b99c8 00000002 8010c33c 00000001 807187f8
df20: 7eaaa364 800d0b84 bd179e08 80718750 00080000 800ee45c 80e702dc 00080000
df40: 00000001 00080000 ffffff9c bc3a1000 00000005 00000011 ffffff9c bc3a1000
df60: 00000005 800d4408 764e0858 7eaaa550 009325bc 00000000 80000000 00000024
df80: 00000100 00000001 00000000 00d07300 00000008 00000008 00000005 8000e624
dfa0: bce8c000 8000e4a0 00d07300 00000008 75f276e4 00080000 000001b6 000001b6
dfc0: 00d07300 00000008 00000008 00000005 00000000 00000000 00000000 7eaaa364
dfe0: 00080000 7eaaa304 75e76474 75ecaf2c 200f0010 75f276e4 108e6978 de285362
[<800d0ba0>] (kmem_cache_alloc) from [<800d6378>] (get_empty_filp+0x78/0x1bc)
[<800d6378>] (get_empty_filp) from [<800e16dc>] (path_openat+0x28/0x5cc)
[<800e16dc>] (path_openat) from [<800e2b88>] (do_filp_open+0x2c/0x88)
[<800e2b88>] (do_filp_open) from [<800d4408>] (do_sys_open+0x104/0x1c8)
[<800d4408>] (do_sys_open) from [<8000e4a0>] (ret_fast_syscall+0x0/0x30)
Code: e7974004 e3540000 0a000024 e5953014 (e7947003)
---[ end trace e9a7f180b41e879b ]---
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=8407 jiffies, g=1764, c=1763, q=1031)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=14712 jiffies, g=1764, c=1763, q=1049)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=21017 jiffies, g=1764, c=1763, q=1086)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=27322 jiffies, g=1764, c=1763, q=1104)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=33627 jiffies, g=1764, c=1763, q=1122)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=39932 jiffies, g=1764, c=1763, q=1140)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 1, t=46237 jiffies, g=1764, c=1763, q=1161)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 0, t=52542 jiffies, g=1764, c=1763, q=1188)
INFO: Stall ended before state dump start
INFO: rcu_preempt detected stalls on CPUs/task


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