Hi all, Here is kernel bug for linux-2.6.29.6 for PowerPC (ppc440) target, while running ipsec application it is observed that kernel oops'es oftenly as show below :
r...@powerpc:~# ./ipsec ------------[ cut here ]------------ kernel BUG at mm/slab.c:3002! Oops: Exception in kernel mode, sig: 5 [#1] PREEMPT LTT NESTING LEVEL : 0 Xilinx Virtex440 Modules linked in: nls_iso8859_1 nfsd NIP: c00a1e94 LR: c00a1d3c CTR: 0000000b REGS: ce8c9d20 TRAP: 0700 Not tainted (2.6.29.6.xilinx-ml507.0908010910-ipsec) MSR: 00021000 <ME,CE> CR: 22024428 XER: 00000005 TASK = cfa2a430[974] 'watchdog' THREAD: ce8c8000 GPR00: 00000028 ce8c9dd0 cfa2a430 cf802ea8 cf9e001c 0000000a cf9e0000 ffffffff GPR08: 00000d80 00000001 0000000a 00000028 cf802ea0 1002b58c c0547bd0 c0547bd4 GPR16: c0547ba0 c050dd78 c050e60c 000000d0 00000000 00200200 00100100 00000001 GPR24: ce8c8034 ce8c8000 00000000 c0520000 00000000 cf802eb0 cf807560 cf809e00 NIP [c00a1e94] cache_alloc_refill+0x138/0x630 LR [c00a1d3c] kmem_cache_alloc+0x80/0xa0 Call Trace: [ce8c9dd0] [c050e60c] 0xc050e60c (unreliable) [ce8c9e30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce8c9e50] [c00534ec] prepare_creds+0x3c/0xcc [ce8c9e70] [c005382c] copy_creds+0xa0/0x12c [ce8c9e80] [c00307dc] copy_process+0x1c0/0xe20 [ce8c9ee0] [c00314b8] do_fork+0x7c/0x338 [ce8c9f20] [c00065b4] sys_clone+0x58/0x88 [ce8c9f40] [c000e164] ret_from_syscall+0x0/0x3c Instruction dump: 2f8a0000 3bac0010 386c0008 409d0104 80cc0000 7f8c3000 419e00e8 81660010 801e001c 7d205810 39200000 7d294914 <0f090000> 7f8b0040 7d455378 409c0074 ---[ end trace b098f3001b420338 ]--- note: watchdog[974] exited with preempt_count 1 BUG: scheduling while atomic: watchdog/974/0x10000002 Modules linked in: nls_iso8859_1 nfsd Call Trace: [ce8c99e0] [c0006184] show_stack+0x40/0x15c (unreliable) [ce8c9a10] [c002bab4] __schedule_bug+0x68/0x6c [ce8c9a20] [c03d5138] schedule+0x2bc/0x36c [ce8c9a70] [c002bae0] __cond_resched+0x28/0x54 [ce8c9a80] [c03d5304] _cond_resched+0x50/0x58 [ce8c9a90] [c00925c8] __mlock_vma_pages_range+0x84/0x2c4 [ce8c9b20] [c0094084] exit_mmap+0x60/0x1b0 [ce8c9b50] [c002fe64] mmput+0x50/0x114 [ce8c9b60] [c0034120] exit_mm+0x130/0x14c [ce8c9b90] [c0035db4] do_exit+0xd0/0x6b8 [ce8c9be0] [c000c234] die+0x1b0/0x1b8 [ce8c9c10] [c000c554] _exception+0x1d4/0x2b4 [ce8c9d10] [c000e78c] ret_from_except_full+0x0/0x4c [ce8c9dd0] [c050e60c] 0xc050e60c [ce8c9e30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce8c9e50] [c00534ec] prepare_creds+0x3c/0xcc [ce8c9e70] [c005382c] copy_creds+0xa0/0x12c [ce8c9e80] [c00307dc] copy_process+0x1c0/0xe20 [ce8c9ee0] [c00314b8] do_fork+0x7c/0x338 [ce8c9f20] [c00065b4] sys_clone+0x58/0x88 [ce8c9f40] [c000e164] ret_from_syscall+0x0/0x3c BUG: scheduling while atomic: watchdog/974/0x10000002 Modules linked in: nls_iso8859_1 nfsd Call Trace: [ce8c99e0] [c0006184] show_stack+0x40/0x15c (unreliable) [ce8c9a10] [c002bab4] __schedule_bug+0x68/0x6c [ce8c9a20] [c03d5138] schedule+0x2bc/0x36c [ce8c9a70] [c002bae0] __cond_resched+0x28/0x54 [ce8c9a80] [c03d5304] _cond_resched+0x50/0x58 [ce8c9a90] [c00925c8] __mlock_vma_pages_range+0x84/0x2c4 [ce8c9b20] [c0094084] exit_mmap+0x60/0x1b0 [ce8c9b50] [c002fe64] mmput+0x50/0x114 [ce8c9b60] [c0034120] exit_mm+0x130/0x14c [ce8c9b90] [c0035db4] do_exit+0xd0/0x6b8 [ce8c9be0] [c000c234] die+0x1b0/0x1b8 [ce8c9c10] [c000c554] _exception+0x1d4/0x2b4 [ce8c9d10] [c000e78c] ret_from_except_full+0x0/0x4c [ce8c9dd0] [c050e60c] 0xc050e60c [ce8c9e30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce8c9e50] [c00534ec] prepare_creds+0x3c/0xcc [ce8c9e70] [c005382c] copy_creds+0xa0/0x12c [ce8c9e80] [c00307dc] copy_process+0x1c0/0xe20 [ce8c9ee0] [c00314b8] do_fork+0x7c/0x338 [ce8c9f20] [c00065b4] sys_clone+0x58/0x88 [ce8c9f40] [c000e164] ret_from_syscall+0x0/0x3c r...@inson:~# r...@inson:~# ------------[ cut here ]------------ kernel BUG at mm/slab.c:3002! Oops: Exception in kernel mode, sig: 5 [#2] PREEMPT LTT NESTING LEVEL : 0 Xilinx Virtex440 Modules linked in: nls_iso8859_1 nfsd NIP: c00a1e94 LR: c00a1d3c CTR: 0000000a REGS: ce9cbd20 TRAP: 0700 Tainted: G D (2.6.29.6.xilinx-ml507.0908010910-ipsec) MSR: 00021000 <ME,CE> CR: 22424848 XER: 00000001 TASK = ce8fe030[1400] 'mvtsd.py' THREAD: ce9ca000 GPR00: 00000028 ce9cbdd0 ce8fe030 cf802ea8 cf9e001c 00000009 cf9e0000 ffffffff GPR08: 00000d20 00000001 00000009 00000028 cf802ea0 10018a3c c0547bd0 c0547bd4 GPR16: c0547ba0 c050dd78 c050e60c 000000d0 00000000 00200200 00100100 00000001 GPR24: ce9ca034 ce9ca000 00000000 c0520000 00000000 cf802eb0 cf807560 cf809e00 NIP [c00a1e94] cache_alloc_refill+0x138/0x630 LR [c00a1d3c] kmem_cache_alloc+0x80/0xa0 Call Trace: [ce9cbdd0] [c050e60c] 0xc050e60c (unreliable) [ce9cbe30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce9cbe50] [c00534ec] prepare_creds+0x3c/0xcc [ce9cbe70] [c005382c] copy_creds+0xa0/0x12c [ce9cbe80] [c00307dc] copy_process+0x1c0/0xe20 [ce9cbee0] [c00314b8] do_fork+0x7c/0x338 [ce9cbf20] [c00065b4] sys_clone+0x58/0x88 [ce9cbf40] [c000e164] ret_from_syscall+0x0/0x3c Instruction dump: 2f8a0000 3bac0010 386c0008 409d0104 80cc0000 7f8c3000 419e00e8 81660010 801e001c 7d205810 39200000 7d294914 <0f090000> 7f8b0040 7d455378 409c0074 ---[ end trace b098f3001b420339 ]--- note: mvtsd.py[1400] exited with preempt_count 1 BUG: scheduling while atomic: mvtsd.py/1400/0x10000002 Modules linked in: nls_iso8859_1 nfsd Call Trace: [ce9cb9e0] [c0006184] show_stack+0x40/0x15c (unreliable) [ce9cba10] [c002bab4] __schedule_bug+0x68/0x6c [ce9cba20] [c03d5138] schedule+0x2bc/0x36c [ce9cba70] [c002bae0] __cond_resched+0x28/0x54 [ce9cba80] [c03d5304] _cond_resched+0x50/0x58 [ce9cba90] [c008f074] unmap_vmas+0x4d0/0x698 [ce9cbb20] [c00940ec] exit_mmap+0xc8/0x1b0 [ce9cbb50] [c002fe64] mmput+0x50/0x114 [ce9cbb60] [c0034120] exit_mm+0x130/0x14c [ce9cbb90] [c0035db4] do_exit+0xd0/0x6b8 [ce9cbbe0] [c000c234] die+0x1b0/0x1b8 [ce9cbc10] [c000c554] _exception+0x1d4/0x2b4 [ce9cbd10] [c000e78c] ret_from_except_full+0x0/0x4c [ce9cbdd0] [c050e60c] 0xc050e60c [ce9cbe30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce9cbe50] [c00534ec] prepare_creds+0x3c/0xcc [ce9cbe70] [c005382c] copy_creds+0xa0/0x12c [ce9cbe80] [c00307dc] copy_process+0x1c0/0xe20 [ce9cbee0] [c00314b8] do_fork+0x7c/0x338 [ce9cbf20] [c00065b4] sys_clone+0x58/0x88 [ce9cbf40] [c000e164] ret_from_syscall+0x0/0x3c BUG: scheduling while atomic: mvtsd.py/1400/0x10000002 Modules linked in: nls_iso8859_1 nfsd Call Trace: [ce9cb9e0] [c0006184] show_stack+0x40/0x15c (unreliable) [ce9cba10] [c002bab4] __schedule_bug+0x68/0x6c [ce9cba20] [c03d5138] schedule+0x2bc/0x36c [ce9cba70] [c002bae0] __cond_resched+0x28/0x54 [ce9cba80] [c03d5304] _cond_resched+0x50/0x58 [ce9cba90] [c008f074] unmap_vmas+0x4d0/0x698 [ce9cbb20] [c00940ec] exit_mmap+0xc8/0x1b0 [ce9cbb50] [c002fe64] mmput+0x50/0x114 [ce9cbb60] [c0034120] exit_mm+0x130/0x14c [ce9cbb90] [c0035db4] do_exit+0xd0/0x6b8 [ce9cbbe0] [c000c234] die+0x1b0/0x1b8 [ce9cbc10] [c000c554] _exception+0x1d4/0x2b4 [ce9cbd10] [c000e78c] ret_from_except_full+0x0/0x4c [ce9cbdd0] [c050e60c] 0xc050e60c [ce9cbe30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce9cbe50] [c00534ec] prepare_creds+0x3c/0xcc [ce9cbe70] [c005382c] copy_creds+0xa0/0x12c [ce9cbe80] [c00307dc] copy_process+0x1c0/0xe20 [ce9cbee0] [c00314b8] do_fork+0x7c/0x338 [ce9cbf20] [c00065b4] sys_clone+0x58/0x88 [ce9cbf40] [c000e164] ret_from_syscall+0x0/0x3c ------------[ cut here ]------------ kernel BUG at mm/slab.c:3002! Oops: Exception in kernel mode, sig: 5 [#3] PREEMPT LTT NESTING LEVEL : 0 Xilinx Virtex440 Modules linked in: nls_iso8859_1 nfsd NIP: c00a1e94 LR: c00a1d3c CTR: 00000009 REGS: ce837d20 TRAP: 0700 Tainted: G D (2.6.29.6.xilinx-ml507.0908010910-ipsec) MSR: 00021000 <ME,CE> CR: 22424428 XER: 00000005 TASK = cfaf5030[970] 'sshd' THREAD: ce836000 GPR00: 00000028 ce837dd0 cfaf5030 cf802ea8 cf9e001c 00000008 cf9e0000 ffffffff GPR08: 00000ea0 00000001 00000008 00000028 cf802ea0 100639ac c0547bd0 c0547bd4 GPR16: c0547ba0 c050dd78 c050e60c 000000d0 00000000 00200200 00100100 00000001 GPR24: ce836034 ce836000 00000000 c0520000 00000000 cf802eb0 cf807560 cf809e00 NIP [c00a1e94] cache_alloc_refill+0x138/0x630 LR [c00a1d3c] kmem_cache_alloc+0x80/0xa0 Call Trace: [ce837dd0] [c050e60c] 0xc050e60c (unreliable) [ce837e30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce837e50] [c00534ec] prepare_creds+0x3c/0xcc [ce837e70] [c005382c] copy_creds+0xa0/0x12c [ce837e80] [c00307dc] copy_process+0x1c0/0xe20 [ce837ee0] [c00314b8] do_fork+0x7c/0x338 [ce837f20] [c00065b4] sys_clone+0x58/0x88 [ce837f40] [c000e164] ret_from_syscall+0x0/0x3c Instruction dump: 2f8a0000 3bac0010 386c0008 409d0104 80cc0000 7f8c3000 419e00e8 81660010 801e001c 7d205810 39200000 7d294914 <0f090000> 7f8b0040 7d455378 409c0074 ---[ end trace b098f3001b42033a ]--- note: sshd[970] exited with preempt_count 1 ------------[ cut here ]------------ Badness at kernel/softirq.c:150 NIP: c0038e30 LR: c039ba74 CTR: c037667c REGS: ce837a00 TRAP: 0700 Tainted: G D (2.6.29.6.ml507.0908010910-ipsec) MSR: 00021000 <ME,CE> CR: 22424442 XER: 20000005 TASK = cfaf5030[970] 'sshd' THREAD: ce836000 GPR00: 00000001 ce837ab0 cfaf5030 cf389760 cf3e0ca0 00000000 00000000 00000000 GPR08: 00001b22 c0522ca0 cf4114c8 00000000 82424448 100639ac c0547bd0 c0547bd4 GPR16: c0547ba0 c050dd78 c050e60c 000000d0 00000000 00200200 00100100 00000001 GPR24: ce836034 00000005 cf389760 cf389b80 cf4bfd94 ce836000 00000000 ce836000 NIP [c0038e30] local_bh_enable+0x9c/0xbc LR [c039ba74] ipv6_sock_mc_close+0x160/0x190 Call Trace: [ce837ab0] [c0148aa8] __put_nfs_open_context+0xa8/0xc4 (unreliable) [ce837ac0] [c039ba74] ipv6_sock_mc_close+0x160/0x190 [ce837af0] [c03766a8] inet6_release+0x2c/0x50 [ce837b00] [c02f0be4] sock_release+0x30/0xd0 [ce837b20] [c02f0ca0] sock_close+0x1c/0x40 [ce837b30] [c00a8588] __fput+0xc4/0x204 [ce837b50] [c00a4524] filp_close+0x6c/0xa0 [ce837b70] [c0034364] put_files_struct+0xe0/0xfc [ce837b90] [c0035e28] do_exit+0x144/0x6b8 [ce837be0] [c000c234] die+0x1b0/0x1b8 [ce837c10] [c000c554] _exception+0x1d4/0x2b4 [ce837d10] [c000e78c] ret_from_except_full+0x0/0x4c [ce837dd0] [c050e60c] 0xc050e60c [ce837e30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce837e50] [c00534ec] prepare_creds+0x3c/0xcc [ce837e70] [c005382c] copy_creds+0xa0/0x12c [ce837e80] [c00307dc] copy_process+0x1c0/0xe20 [ce837ee0] [c00314b8] do_fork+0x7c/0x338 [ce837f20] [c00065b4] sys_clone+0x58/0x88 [ce837f40] [c000e164] ret_from_syscall+0x0/0x3c Instruction dump: 41a20008 4839c591 80010014 83e1000c 38210010 7c0803a6 4e800020 3d20c052 39292ca0 800900c0 7c000034 5400d97e <0f000000> 2f800000 41beff88 38000001 BUG: scheduling while atomic: sshd/970/0x10000002 Modules linked in: nls_iso8859_1 nfsd Call Trace: [ce837ac0] [c0006184] show_stack+0x40/0x15c (unreliable) [ce837af0] [c002bab4] __schedule_bug+0x68/0x6c [ce837b00] [c03d5138] schedule+0x2bc/0x36c [ce837b50] [c002bae0] __cond_resched+0x28/0x54 [ce837b60] [c03d5304] _cond_resched+0x50/0x58 [ce837b70] [c0034368] put_files_struct+0xe4/0xfc [ce837b90] [c0035e28] do_exit+0x144/0x6b8 [ce837be0] [c000c234] die+0x1b0/0x1b8 [ce837c10] [c000c554] _exception+0x1d4/0x2b4 [ce837d10] [c000e78c] ret_from_except_full+0x0/0x4c [ce837dd0] [c050e60c] 0xc050e60c [ce837e30] [c00a1d3c] kmem_cache_alloc+0x80/0xa0 [ce837e50] [c00534ec] prepare_creds+0x3c/0xcc [ce837e70] [c005382c] copy_creds+0xa0/0x12c [ce837e80] [c00307dc] copy_process+0x1c0/0xe20 [ce837ee0] [c00314b8] do_fork+0x7c/0x338 [ce837f20] [c00065b4] sys_clone+0x58/0x88 [ce837f40] [c000e164] ret_from_syscall+0x0/0x3c r...@inson:~# Any Clue or any bugs found in mm/slab.c for linux-2.6.29.6 while running IPSEC applications ? Thanks in Advance ! Regards Srikanth Krishnakar **********************
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