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From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <8slsrl$4tljao@domain.hid> From: "Gao" Date: Tue, 14 Dec 2010 16:21:45 +0800 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_001B_01CB9BAB.05197B20" Subject: [Xenomai-help] Kernel crash caused by t_delete List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org This is a multi-part message in MIME format. ------=_NextPart_000_001B_01CB9BAB.05197B20 Content-Type: multipart/related; boundary="----=_NextPart_001_001C_01CB9BAB.05197B20" ------=_NextPart_001_001C_01CB9BAB.05197B20 Content-Type: multipart/alternative; boundary="----=_NextPart_002_001D_01CB9BAB.05197B20" ------=_NextPart_002_001D_01CB9BAB.05197B20 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hello again: I an experiencing a rough issue about pSoS+ skin. I am using linux kernel 2.6.33.4, xenomai 2.5.4 and adeos-ipipe-2.6.33.4-powerpc-2.9-01.patch on MPC870. The pSoS+ emulator is built as module. Attached is the demo.c used to test. When I run the demo at first time as follow step: insmod xeno_psos.ko ./demo It can run normally. But when I run it again with the following steps rmmod xeno_psos insmod xeno_psos.ko ./demo the kernel will crash with below information: kernel BUG at fs/buffer.c:1271! Oops: Exception in kernel mode, sig: 5 [#1] RxT-Carrier Modules linked in: module_mem xeno_psos NIP: c00d6608 LR: c00d682c CTR: c010ff78 REGS: c1a15ba0 TRAP: 0700 Not tainted (2.6.33.4) MSR: 00029032 CR: 44820442 XER: 20000000 TASK = c190ed60[348] 'MAIN' THREAD: c1a14000 GPR00: 00000001 c1a15c50 c190ed60 c14021a0 00040002 00001000 00000080 00004000 GPR08: 00000fff c0390000 00000000 02000400 44820442 109eb2a0 01ffe800 01ff50a0 GPR16: 01fd05d8 01ff507c ffffff9c c1a15e64 fffffff4 c03b0000 c1a15d98 c1a15da0 GPR24: c14a72c0 c1942d80 00040002 c14021a0 c14a7cd0 00001000 c0394ae0 c193ec00 NIP [c00d6608] __find_get_block+0x28/0x22c LR [c00d682c] __getblk+0x20/0x220 Call Trace: [c1a15c50] [20000000] 0x20000000 (unreliable) [c1a15ca0] [c00d682c] __getblk+0x20/0x220 [c1a15cd0] [c0105e90] __ext3_get_inode_loc+0xe4/0x364 [c1a15d00] [c0109d08] ext3_iget+0x60/0x56c [c1a15d30] [c010dbd0] ext3_lookup+0xf8/0x164 [c1a15d60] [c00bb270] do_lookup+0x1b4/0x210 [c1a15d90] [c00bccfc] link_path_walk+0x564/0xbfc [c1a15df0] [c00bd3dc] path_walk+0x48/0xcc [c1a15e20] [c00bd550] do_path_lookup+0x64/0x6c [c1a15e40] [c00be370] do_filp_open+0xd8/0x9a8 [c1a15f10] [c00afff4] do_sys_open+0x64/0x130 [c1a15f40] [c000f8a0] ret_from_syscall+0x0/0x38 Instruction dump: 813f000c 4bffffac 7c0802a6 9421ffb0 7d800026 bf210034 90010054 91810030 3d20c039 80094ae0 3bc94ae0 540007fe <0f000000> 38000008 7c0903a6 3d20c039 ---[ end trace f21c6826c169a5b9 ]--- The problem seemed to caused by t_delete(0). Sometimes, once the issue happens, after I power off the target and power on again, and do nothing, the kerenl will still crach with above information. Do anyone have an idea about the issues. Thanks in advance. Best regards, Wenyi Gao ------=_NextPart_002_001D_01CB9BAB.05197B20 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Blank

Hello again:

I an experiencing=20 a rough issue about pSoS+ skin. I am using linux kernel = 2.6.33.4,=20 xenomai 2.5.4 and =20 adeos-ipipe-2.6.33.4-powerpc-2.9-01.patch on MPC870. The=20 pSoS+ emulator is = built as=20 module. Attached is the demo.c used to test.

When I run the demo at first time as = follow=20 step:

insmod = xeno_psos.ko

./demo

It can run normally. =

But when I run it again with the following=20 steps

rmmod xeno_psos

insmod = xeno_psos.ko

./demo

the kernel will crash with below=20 information:

kernel BUG at=20 fs/buffer.c:1271!

Oops: Exception in kernel mode, sig: 5=20 [#1]

RxT-Carrier

Modules linked in: module_mem xeno_psos=20

NIP: c00d6608 LR: c00d682c CTR:=20 c010ff78

REGS: c1a15ba0 TRAP: 0700 Not = tainted =20 (2.6.33.4)

MSR: 00029032 <EE,ME,CE,IR,DR> = CR:=20 44820442 XER: 20000000

TASK =3D c190ed60[348] 'MAIN' THREAD:=20 c1a14000

GPR00: 00000001 c1a15c50 c190ed60 c14021a0 = 00040002=20 00001000 00000080 00004000

GPR08: 00000fff c0390000 00000000 02000400 = 44820442=20 109eb2a0 01ffe800 01ff50a0

GPR16: 01fd05d8 01ff507c ffffff9c c1a15e64 = fffffff4=20 c03b0000 c1a15d98 c1a15da0

GPR24: c14a72c0 c1942d80 00040002 c14021a0 = c14a7cd0=20 00001000 c0394ae0 c193ec00

NIP [c00d6608]=20 __find_get_block+0x28/0x22c

LR [c00d682c]=20 __getblk+0x20/0x220

Call Trace:

[c1a15c50] [20000000] 0x20000000=20 (unreliable)

[c1a15ca0] [c00d682c]=20 __getblk+0x20/0x220

[c1a15cd0] [c0105e90]=20 __ext3_get_inode_loc+0xe4/0x364

[c1a15d00] [c0109d08]=20 ext3_iget+0x60/0x56c

[c1a15d30] [c010dbd0]=20 ext3_lookup+0xf8/0x164

[c1a15d60] [c00bb270]=20 do_lookup+0x1b4/0x210

[c1a15d90] [c00bccfc]=20 link_path_walk+0x564/0xbfc

[c1a15df0] [c00bd3dc]=20 path_walk+0x48/0xcc

[c1a15e20] [c00bd550]=20 do_path_lookup+0x64/0x6c

[c1a15e40] [c00be370]=20 do_filp_open+0xd8/0x9a8

[c1a15f10] [c00afff4]=20 do_sys_open+0x64/0x130

[c1a15f40] [c000f8a0]=20 ret_from_syscall+0x0/0x38

Instruction dump:

813f000c 4bffffac 7c0802a6 9421ffb0 7d800026 = bf210034=20 90010054 91810030

3d20c039 80094ae0 3bc94ae0 540007fe = <0f000000>=20 38000008 7c0903a6 3d20c039

---[ end trace f21c6826c169a5b9=20 ]---

The problem seemed to caused by t_delete(0).=20

Sometimes, once the issue happens, after I = power off=20 the target and power on again, and do nothing, the kerenl will still = crach with=20 above information.

Do anyone have an idea about the issues. Thanks in=20 advance.

Best=20 regards,

Wenyi=20 Gao

------=_NextPart_002_001D_01CB9BAB.05197B20-- ------=_NextPart_001_001C_01CB9BAB.05197B20 Content-Type: image/gif; name="Blank Bkgrd.gif" Content-Transfer-Encoding: base64 Content-ID: <949141907@domain.hid> R0lGODlhLQAtAID/AP////f39ywAAAAALQAtAEACcAxup8vtvxKQsFon6d02898pGkgiYoCm6sq2 7iqWcmzOsmeXeA7uPJd5CYdD2g9oPF58ygqz+XhCG9JpJGmlYrPXGlfr/Yo/VW45e7amp2tou/lW xo/zX513z+Vt+1n/tiX2pxP4NUhy2FM4xtjIUQAAOw== ------=_NextPart_001_001C_01CB9BAB.05197B20-- ------=_NextPart_000_001B_01CB9BAB.05197B20 Content-Type: application/octet-stream; name="demo.c" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="demo.c" #include #include #include =0A= #include =0A= #include #include =0A= #define EVENT1 1 #define EVENT2 2 =0A= #define ERR_NO_ERROR SUCCESS=0A= =0A= /************************************************************************= ***** ** demo program global data structures *************************************************************************= ****/ char partition_task2_part[1024]; char partition_task3_part[2048]; =0A= =0A= ULONG part2_numblks; ULONG part3_numblks; ULONG task1_id; ULONG task2_id; ULONG task3_id; ULONG task4_id;=0A= ULONG task5_id;=0A= ULONG queue2_id; ULONG queue3_id; =0A= ULONG timer_id;=0A= ULONG part2_id; ULONG part3_id; ULONG sema41_id; =0A= #if 1 void task1( ULONG dummy0, ULONG dummy1, ULONG dummy2, ULONG dummy3 ) { ULONG err, event, i; char buffer[20]; tm_wkafter( 50 ); for (;;) { printf( "\r\ntask1 waiting on event mask %lx\n", (unsigned long)(EVENT1 | EVENT2) ); err =3D ev_receive( EVENT1 | EVENT2, EV_ALL, 0, &event ); if (event & EVENT1) {=0A= =0A= printf("received event 1\n");=0A= =0A= { for (i =3D 0; i < 10; i++) buffer[i] =3D 'A' + i; buffer[i] =3D 0; printf("\r\ntask1's message for task2: %s\n", buffer ); err =3D q_vsend( queue2_id, buffer, 11 ); // err =3D pt_retbuf( part2_id, buffer ); }=0A= =20 }=0A= =20 if (event & EVENT2) {=0A= =0A= printf("received event 2\n");=0A= =0A= =20 { for (i =3D 0; i < 10; i++) buffer[i] =3D 'Z' - i; buffer[i] =3D 0; printf("\r\ntask1's message for task3: %s\n", buffer ); err =3D q_send( queue3_id, buffer ); //err =3D pt_retbuf( part3_id, buffer ); }=0A= =0A= =0A= =20 }=0A= =20 }=0A= =20 } #endif /*-----------------------------------------------------------------------= */ /* * task2 - First consumer task. It tells the producer that it is ready = to * receive a message by posting an event on which producer is = pending. * Then it pends on the queue where producer posts the = message. */ void task2( ULONG dummy0, ULONG dummy1, ULONG dummy2, ULONG dummy3 ) { ULONG err, i; char foo; char msg[128]; ULONG msglen; printf( "task2 is running\n");=0A= =0A= for (;;) {=0A= =0A= tm_wkafter( 200 );=0A= =20 err =3D ev_send( task1_id, EVENT1 ); =0A= #if 1=09 printf( "\r\ntask2 waiting on vqueue %ld", queue2_id ); err =3D q_vreceive( queue2_id, Q_WAIT, 0L, msg, 128, &msglen ); if ( err !=3D ERR_NO_ERROR ) printf( "\r\nq_vreceive returned error %lx", err ); else { printf("\r\ntask2 received message from task1: %s\n", msg); for (i =3D 0; msg[i]; i++) foo ^=3D msg[i]; }=0A= #endif=20 } } void task3( ULONG dummy0, ULONG dummy1, ULONG dummy2, ULONG dummy3 ) { ULONG err; int i; char foo, *msg; for (;;) {=0A= tm_wkafter( 200 ); err =3D ev_send( task1_id, EVENT2 ); #if 1 printf( "\r\ntask3 waiting on queue %ld", queue3_id ); err =3D q_receive( queue3_id, Q_WAIT, 0L, msg ); if ( err !=3D ERR_NO_ERROR ) printf( "\r\nq_receive returned error %lx", err ); else { printf("\r\ntask3 received message from task1: %s\n", msg); for (i =3D 0; msg[i]; i++) foo +=3D msg[i]; }=0A= #endif=20 } } =0A= =0A= =0A= void task5( ULONG dummy0, ULONG dummy1, ULONG dummy2, ULONG dummy3 ) { =0A= printf("\r\nTask5 start running");=0A= =20 for (;;)=0A= {=0A= tm_wkafter( 200 );=0A= printf("\r\nTask5 is running"); =20 } }=0A= =0A= void task4( ULONG dummy0, ULONG dummy1, ULONG dummy2, ULONG dummy3 ) {=0A= ULONG err,index; =0A= printf("\r\nTask4 start running");=0A= =0A= printf( "\r\nCreating Queue 2" );=0A= err =3D q_vcreate( "QUE2", /*Q_PRIOR*/Q_FIFO, 1, 128, &queue2_id );=0A= if ( err !=3D ERR_NO_ERROR )=0A= printf( "task4... returned error %lx", err ); =0A= =0A= index =3D 0;=09 for (;;)=0A= {=0A= tm_wkafter( 1000); index++; =09 printf("\r\nTask4 is running"); if (index >=3D 10) { index =3D 0; break; } } printf("\r\nTask4 is breaking\n"); t_delete(0); tm_wkafter(1000); }=0A= =0A= =0A= =0A= =0A= /*-----------------------------------------------------------------------= */ /************************************************************************= ***** ** user system initialization, shutdown, and resource cleanup *************************************************************************= ****/ void user_sysroot( void ) { ULONG err; =0A= mlockall(MCL_CURRENT|MCL_FUTURE);=0A= =0A= #if 1=0A= printf( "\r\nCreating Task 4" ); err =3D t_create( "TSK4", 10, 4096, 4096, T_LOCAL, &task4_id ); if(err !=3D ERR_NO_ERROR)=0A= printf("\r\nCreating Task 4 error %x", err); err =3D t_start( task4_id, T_TSLICE, task4, (ULONG *)NULL ); if(err !=3D ERR_NO_ERROR)=0A= printf("\r\nStart Task 4 error %x", err);=0A= #endif=0A= printf( "\r\n" ); } =0Dint main(void)=0A= {=0A= user_sysroot();=0A= int index =3D 0; int flag =3D 0; for(;;) {=0A= printf("\n\rmain thread is running\n\r"); tm_wkafter(1000); index++; =09 if (index >=3D 10) { if (!flag) { //t_delete(task4_id); flag =3D 1; } } if(index >=3D 20) break; =0A= } t_delete(0); return 0;=0A= }=0A= ------=_NextPart_000_001B_01CB9BAB.05197B20--