Messages in this thread | | | Date | Wed, 4 Feb 2015 23:08:42 -0500 | Subject | Re: divide by zero oops in kernel 3.17.7 | From | william <> |
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so it seems that i m hitting this bug : https://lkml.org/lkml/2014/4/29/497
+ if (!divisor) + divisor = 1;
that have been fixed ( well it looks more like a workaround than a fix seen from here ) in the 64 bit code but not in the 32 bit code ? I understand it right ?
is it official that the 32 bit linux kernel is no more supported ?
On Sun, Jan 18, 2015 at 6:25 AM, william <william@waisse.org> wrote: > hi all > > I just had the following kernel oops, its a 32 bits kernel, the > problem was triggered by both mysql ( user 60 ) on cpu 2 and cpu 6 > and apache ( user 81 ) on cpu 4, at the same time, here is the log : > > Jan 15 22:16:17 gemelos kernel: divide error: 0000 [#1] SMP > Jan 15 22:16:17 gemelos kernel: CPU: 2 PID: 18340 Comm: mysqld Not > tainted 3.17.7-hardened-r1ww7_r10b #1 > Jan 15 22:16:17 gemelos kernel: Hardware name: Dell Inc. PowerEdge > R210 II/03X6X0, BIOS 2.7.0 11/15/2013 > Jan 15 22:16:17 gemelos kernel: task: ee0c0930 ti: ee0c0c94 task.ti: ee0c0c94 > Jan 15 22:16:17 gemelos kernel: EIP: 0060:[<00249241>] EFLAGS: 00210246 CPU: 2 > Jan 15 22:16:17 gemelos kernel: EAX: 0000003a EBX: ffff66bd ECX: > 00000000 EDX: 00000000 > Jan 15 22:16:17 gemelos kernel: ESI: 0000003a EDI: 0000003a EBP: > c230fc6c ESP: c230fc48 > Jan 15 22:16:17 gemelos kernel: DS: 0068 ES: 0068 FS: 00d8 GS: 007b SS: 0068 > Jan 15 22:16:17 gemelos kernel: CR0: 80050033 CR2: 204bc454 CR3: > 01a04080 CR4: 001407f0 > Jan 15 22:16:17 gemelos kernel: Stack: > Jan 15 22:16:17 gemelos kernel: 00000542 00000000 c230fc74 00000000 > 00000000 00000000 00000000 00000000 > Jan 15 22:16:17 gemelos kernel: 00000000 c230fca8 000c1e69 00000000 > 00000000 02a70000 00000000 00000000 > Jan 15 22:16:17 gemelos kernel: 00000000 000002a7 0000003b 00000000 > 00000001 00000065 00000000 ee3d49c4 > Jan 15 22:16:17 gemelos kernel: Call Trace: > Jan 15 22:16:17 gemelos kernel: [<000c1e69>] bdi_position_ratio+0x181/0x1dd > Jan 15 22:16:17 gemelos kernel: [<000c2fc5>] > balance_dirty_pages_ratelimited+0x43f/0x739 > Jan 15 22:16:17 gemelos kernel: [<00498fe8>] ? nft_target_init+0x6b/0x17b > Jan 15 22:16:17 gemelos kernel: [<00498fe8>] ? nft_target_init+0x6b/0x17b > Jan 15 22:16:17 gemelos kernel: [<001a784d>] ? __ext4_journal_stop+0x53/0x6c > Jan 15 22:16:17 gemelos kernel: [<00017ffe>] ? intel_pmu_hw_config+0xa7/0xca > Jan 15 22:16:17 gemelos kernel: [<000bb9ff>] generic_perform_write+0x172/0x1af > Jan 15 22:16:17 gemelos kernel: [<003c0000>] ? bnx2x_queue_comp_cmd+0xcf/0x12d > Jan 15 22:16:17 gemelos kernel: [<000bcbc0>] > __generic_file_write_iter+0x444/0x4c5 > Jan 15 22:16:17 gemelos kernel: [<003c1000>] ? bnx2x_func_send_cmd+0xc7/0x459 > Jan 15 22:16:17 gemelos kernel: [<00200246>] ? sha256_transform+0x19e0/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<003c0000>] ? bnx2x_queue_comp_cmd+0xcf/0x12d > Jan 15 22:16:17 gemelos kernel: [<00180245>] ext4_file_write_iter+0x3b2/0x473 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<000ee35d>] new_sync_write+0x5c/0x83 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<0000f000>] ? init_intel_cacheinfo+0x291/0x3bd > Jan 15 22:16:17 gemelos kernel: [<003c0000>] ? bnx2x_queue_comp_cmd+0xcf/0x12d > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<000ee301>] ? do_sync_readv_writev+0x70/0x70 > Jan 15 22:16:17 gemelos kernel: [<000eee57>] vfs_write+0xe8/0x1c8 > Jan 15 22:16:17 gemelos kernel: [<000ef286>] SyS_write+0x3f/0x7f > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<003c0000>] ? bnx2x_queue_comp_cmd+0xcf/0x12d > Jan 15 22:16:17 gemelos kernel: [<00510b09>] syscall_call+0x7/0x7 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010033>] ? print_cpu_info+0x19/0xb0 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00020033>] ? > smp_trace_threshold_interrupt+0x13/0x85 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200033>] ? sha256_transform+0x17cd/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200033>] ? sha256_transform+0x17cd/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: Code: 89 f9 83 ec 18 89 d7 8b 51 04 8b > 01 85 d2 89 45 e8 89 d0 89 55 ec 75 2e 8b 4d e8 89 f3 89 fe 39 ce 73 > 04 31 f6 eb 10 89 f0 31 d2 <f7> f1 31 d2 89 c6 89 f8 f7 f1 89 d7 89 d8 > 89 fa 89 f3 f7 f1 89 > Jan 15 22:16:17 gemelos kernel: EIP: [<00249241>] div64_u64+0x36/0x106 > SS:ESP 0068:c230fc48 > Jan 15 22:16:17 gemelos kernel: divide error: 0000 [#2] > Jan 15 22:16:17 gemelos kernel: ---[ end trace 16e28ee794763227 ]--- > Jan 15 22:16:17 gemelos kernel: grsec: banning user with uid 60 until > system restart for suspicious kernel crash > Jan 15 22:16:17 gemelos kernel: SMP > Jan 15 22:16:17 gemelos kernel: CPU: 4 PID: 18516 Comm: apache2 > Tainted: G D 3.17.7-hardened-r1ww7_r10b #1 > Jan 15 22:16:17 gemelos kernel: Hardware name: Dell Inc. PowerEdge > R210 II/03X6X0, BIOS 2.7.0 11/15/2013 > Jan 15 22:16:17 gemelos kernel: task: ee0eced0 ti: ee0ed234 task.ti: ee0ed234 > Jan 15 22:16:17 gemelos kernel: EIP: 0060:[<00249241>] EFLAGS: 00210246 CPU: 4 > Jan 15 22:16:17 gemelos kernel: EAX: 0000003a EBX: ffff6647 ECX: > 00000000 EDX: 00000000 > Jan 15 22:16:17 gemelos kernel: ESI: 0000003a EDI: 0000003a EBP: > c23ebc58 ESP: c23ebc34 > Jan 15 22:16:17 gemelos kernel: DS: 0068 ES: 0068 FS: 00d8 GS: 007b SS: 0068 > Jan 15 22:16:17 gemelos kernel: CR0: 80050033 CR2: a18c2000 CR3: > 01a04100 CR4: 001407f0 > Jan 15 22:16:17 gemelos kernel: Stack: > Jan 15 22:16:17 gemelos kernel: 00000542 00000000 c23ebc60 00000000 > 00000000 00000000 00000000 00000000 > Jan 15 22:16:17 gemelos kernel: 00000000 c23ebc94 000c1e69 00000000 > 00000000 02a70000 00000000 00000000 > Jan 15 22:16:17 gemelos kernel: 00000000 000002a7 0000003b 00000000 > 00000001 00000065 00000000 ee3d49c4 > Jan 15 22:16:17 gemelos kernel: Call Trace: > Jan 15 22:16:17 gemelos kernel: [<000c1e69>] bdi_position_ratio+0x181/0x1dd > Jan 15 22:16:17 gemelos kernel: [<000c2fc5>] > balance_dirty_pages_ratelimited+0x43f/0x739 > Jan 15 22:16:17 gemelos kernel: [<00498fe8>] ? nft_target_init+0x6b/0x17b > Jan 15 22:16:17 gemelos kernel: [<00498fe8>] ? nft_target_init+0x6b/0x17b > Jan 15 22:16:17 gemelos kernel: [<001a784d>] ? __ext4_journal_stop+0x53/0x6c > Jan 15 22:16:17 gemelos kernel: [<00017ffe>] ? intel_pmu_hw_config+0xa7/0xca > Jan 15 22:16:17 gemelos kernel: [<000bb9ff>] generic_perform_write+0x172/0x1af > Jan 15 22:16:17 gemelos kernel: [<000bcbc0>] > __generic_file_write_iter+0x444/0x4c5 > Jan 15 22:16:17 gemelos kernel: [<00200246>] ? sha256_transform+0x19e0/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00180245>] ext4_file_write_iter+0x3b2/0x473 > Jan 15 22:16:17 gemelos kernel: [<000ee35d>] new_sync_write+0x5c/0x83 > Jan 15 22:16:17 gemelos kernel: [<000ee301>] ? do_sync_readv_writev+0x70/0x70 > Jan 15 22:16:17 gemelos kernel: [<000eee57>] vfs_write+0xe8/0x1c8 > Jan 15 22:16:17 gemelos kernel: [<000ef391>] SyS_pwrite64+0x52/0x79 > Jan 15 22:16:17 gemelos kernel: [<00510b09>] syscall_call+0x7/0x7 > Jan 15 22:16:17 gemelos kernel: [<00200246>] ? sha256_transform+0x19e0/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00510b29>] ? restore_all_pax+0xc/0xc > Jan 15 22:16:17 gemelos kernel: [<0051007b>] ? ldsem_down_read+0x3b/0x163 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00200202>] ? sha256_transform+0x199c/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200033>] ? sha256_transform+0x17cd/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200286>] ? sha256_transform+0x1a20/0x24a2 > Jan 15 22:16:17 gemelos kernel: Code: 89 f9 83 ec 18 89 d7 8b 51 04 8b > 01 85 d2 89 45 e8 89 d0 89 55 ec 75 2e 8b 4d e8 89 f3 89 fe 39 ce 73 > 04 31 f6 eb 10 89 f0 31 d2 <f7> f1 31 d2 89 c6 89 f8 f7 f1 89 d7 89 d8 > 89 fa 89 f3 f7 f1 89 > Jan 15 22:16:17 gemelos kernel: EIP: [<00249241>] div64_u64+0x36/0x106 > SS:ESP 0068:c23ebc34 > Jan 15 22:16:17 gemelos kernel: divide error: 0000 [#3] > Jan 15 22:16:17 gemelos kernel: ---[ end trace 16e28ee794763228 ]--- > Jan 15 22:16:17 gemelos kernel: grsec: banning user with uid 81 until > system restart for suspicious kernel crash > Jan 15 22:16:17 gemelos kernel: SMP > Jan 15 22:16:17 gemelos kernel: CPU: 6 PID: 18483 Comm: mysqld > Tainted: G D 3.17.7-hardened-r1ww7_r10b #1 > Jan 15 22:16:17 gemelos kernel: Hardware name: Dell Inc. PowerEdge > R210 II/03X6X0, BIOS 2.7.0 11/15/2013 > Jan 15 22:16:17 gemelos kernel: task: ee0a4e10 ti: ee0a5174 task.ti: ee0a5174 > Jan 15 22:16:17 gemelos kernel: EIP: 0060:[<00249241>] EFLAGS: 00210246 CPU: 6 > Jan 15 22:16:17 gemelos kernel: EAX: 0000003a EBX: ffff64e5 ECX: > 00000000 EDX: 00000000 > Jan 15 22:16:17 gemelos kernel: ESI: 0000003a EDI: 0000003a EBP: > ebe7bbfc ESP: ebe7bbd8 > Jan 15 22:16:17 gemelos kernel: DS: 0068 ES: 0068 FS: 00d8 GS: 007b SS: 0068 > Jan 15 22:16:17 gemelos kernel: CR0: 80050033 CR2: a3400000 CR3: > 01a04180 CR4: 001407f0 > Jan 15 22:16:17 gemelos kernel: Stack: > Jan 15 22:16:17 gemelos kernel: 00000542 00000000 ebe7bc04 00000000 > 00000000 00000000 00000000 00000000 > Jan 15 22:16:17 gemelos kernel: 00000000 ebe7bc38 000c1e69 00000000 > 00000000 02a70000 00000000 00000000 > Jan 15 22:16:17 gemelos kernel: 00000000 000002a7 0000003b 00000000 > 00000001 00000065 00000000 ee3d49c4 > Jan 15 22:16:17 gemelos kernel: Call Trace: > Jan 15 22:16:17 gemelos kernel: [<000c1e69>] bdi_position_ratio+0x181/0x1dd > Jan 15 22:16:17 gemelos kernel: [<000c2fc5>] > balance_dirty_pages_ratelimited+0x43f/0x739 > Jan 15 22:16:17 gemelos kernel: [<00498fe8>] ? nft_target_init+0x6b/0x17b > Jan 15 22:16:17 gemelos kernel: [<00498fe8>] ? nft_target_init+0x6b/0x17b > Jan 15 22:16:17 gemelos kernel: [<001a784d>] ? __ext4_journal_stop+0x53/0x6c > Jan 15 22:16:17 gemelos kernel: [<00017ffe>] ? intel_pmu_hw_config+0xa7/0xca > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<000bb9ff>] generic_perform_write+0x172/0x1af > Jan 15 22:16:17 gemelos kernel: [<000bcbc0>] > __generic_file_write_iter+0x444/0x4c5 > Jan 15 22:16:17 gemelos kernel: [<00200246>] ? sha256_transform+0x19e0/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00180245>] ext4_file_write_iter+0x3b2/0x473 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<000ee35d>] new_sync_write+0x5c/0x83 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<000ee301>] ? do_sync_readv_writev+0x70/0x70 > Jan 15 22:16:17 gemelos kernel: [<000eee57>] vfs_write+0xe8/0x1c8 > Jan 15 22:16:17 gemelos kernel: [<000ef286>] SyS_write+0x3f/0x7f > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00510b09>] syscall_call+0x7/0x7 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00510b29>] ? restore_all_pax+0xc/0xc > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00010000>] ? print_cpu_msr+0x3b/0x55 > Jan 15 22:16:17 gemelos kernel: [<00200033>] ? sha256_transform+0x17cd/0x24a2 > Jan 15 22:16:17 gemelos kernel: [<00200293>] ? sha256_transform+0x1a2d/0x24a2 > Jan 15 22:16:17 gemelos kernel: Code: 89 f9 83 ec 18 89 d7 8b 51 04 8b > 01 85 d2 89 45 e8 89 d0 89 55 ec 75 2e 8b 4d e8 89 f3 89 fe 39 ce 73 > 04 31 f6 eb 10 89 f0 31 d2 <f7> f1 31 d2 89 c6 89 f8 f7 f1 89 d7 89 d8 > 89 fa 89 f3 f7 f1 89 > Jan 15 22:16:17 gemelos kernel: EIP: [<00249241>] div64_u64+0x36/0x106 > SS:ESP 0068:ebe7bbd8 > Jan 15 22:16:17 gemelos kernel: ---[ end trace 16e28ee794763229 ]--- > Jan 15 22:16:17 gemelos kernel: grsec: banning user with uid 60 until > system restart for suspicious kernel crash > > this could be related to this thread : > https://lkml.org/lkml/2014/11/1/52 > > I just rebuilt my kernel with CONFIG_DEBUG_INFO_REDUCED and > CONFIG_DEBUG_INFO to get more infos if the oops happen again, please > tell me whatever i could do to help you trace the bug. > > answering to the other thread ( https://lkml.org/lkml/2014/11/11/870 ) > I have : > > cat /proc/sys/vm/dirty_ratio > 20 > > cat /proc/sys/vm/dirty_background_ratio > 10 > > > > > > -- > Cordialement > > ----------------------------------- > > William Waisse > http://waisse.org | http://neoskills.com > http://cahierspip.ww7.be | http://feeder.ww7.be > Computers are like air conditionners. They work better when you close windows.
-- Cordialement
-----------------------------------
William Waisse http://waisse.org | http://neoskills.com http://cahierspip.ww7.be | http://feeder.ww7.be Computers are like air conditionners. They work better when you close windows.
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