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Message-ID: <CAJyeiY7KsLvctMdwVPHhXw_TqGf1wet=K8B+4C9OUwmhOXumNA@mail.gmail.com>
Date:	Sat, 14 Feb 2015 13:51:57 -0500
From:	william <william@...sse.org>
To:	Frans Klaver <fransklaver@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>, Michal Hocko <mhocko@...e.cz>
Subject: Re: divide by zero oops in kernel 3.17.7

fyi, crashed again today with 3.18.5 vanilla :

still crashing on 3.18.5 vanilla :

Feb 13 04:06:41 gemelos kernel: divide error: 0000 [#1] SMP DEBUG_PAGEALLOC
Feb 13 04:06:41 gemelos kernel: CPU: 2 PID: 24892 Comm: mysqld Not
tainted 3.18.5ww7_vanilla1_debug #1
Feb 13 04:06:41 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 04:06:41 gemelos kernel: task: ecc76580 ti: dde00000 task.ti: dde00000
Feb 13 04:06:41 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 2
Feb 13 04:06:41 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 04:06:41 gemelos kernel: EAX: 000002e5 EBX: 00000000 ECX:
000002e5 EDX: 00000000
Feb 13 04:06:41 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
dde01d70 ESP: dde01d44
Feb 13 04:06:41 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 04:06:41 gemelos kernel: CR0: 80050033 CR2: b7d2c418 CR3:
2ae67000 CR4: 001407f0
Feb 13 04:06:41 gemelos kernel: Stack:
Feb 13 04:06:41 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffffa05a 000002e5 000002e5 c10b850d
Feb 13 04:06:41 gemelos kernel: 00000000 c0000029 00000001 dde01da4
c10b86e0 00000000 00000000 00000000
Feb 13 04:06:41 gemelos kernel: 00010000 ffffffff 00000029 000002e6
00000000 00000087 00000049 c00560d4
Feb 13 04:06:41 gemelos kernel: Call Trace:
Feb 13 04:06:41 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 04:06:41 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 04:06:41 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 04:06:41 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 04:06:41 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 04:06:41 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 04:06:41 gemelos kernel: [<c10b39db>] ?
generic_file_read_iter+0x439/0x4fc
Feb 13 04:06:41 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 04:06:41 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 04:06:41 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 04:06:41 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 04:06:41 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 04:06:41 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 04:06:41 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 04:06:41 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:dde01d44
Feb 13 04:06:41 gemelos kernel: ---[ end trace 27f5f5f360f2af7d ]---
Feb 13 04:06:41 gemelos kernel: divide error: 0000 [#2] SMP DEBUG_PAGEALLOC
Feb 13 04:06:41 gemelos kernel: CPU: 6 PID: 25864 Comm: mysqld
Tainted: G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 04:06:41 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 04:06:41 gemelos kernel: task: ecd12540 ti: ebeb4000 task.ti: ebeb4000
Feb 13 04:06:41 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 6
Feb 13 04:06:41 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 04:06:41 gemelos kernel: EAX: 000002a4 EBX: 00000000 ECX:
000002a4 EDX: 00000000
Feb 13 04:06:41 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
ebeb5d70 ESP: ebeb5d44
Feb 13 04:06:41 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 04:06:41 gemelos kernel: CR0: 80050033 CR2: b79b6000 CR3:
2ae67000 CR4: 001407f0
Feb 13 04:06:41 gemelos kernel: Stack:
Feb 13 04:06:41 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffff9638 000002a4 000002a4 c10b850d
Feb 13 04:06:41 gemelos kernel: 00000000 c0000029 00000001 ebeb5da4
c10b86e0 00000000 00000000 00000000
Feb 13 04:06:41 gemelos kernel: 00010000 ffffffff 00000029 000002a5
00000000 00000087 00000050 c00560d4
Feb 13 04:06:41 gemelos kernel: Call Trace:
Feb 13 04:06:41 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 04:06:41 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 04:06:41 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 04:06:41 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 04:06:41 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 04:06:41 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 04:06:41 gemelos kernel: [<c10f1224>] ? d_delete+0x102/0x10a
Feb 13 04:06:41 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 04:06:41 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 04:06:41 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 04:06:41 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 04:06:41 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 04:06:41 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 04:06:41 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 04:06:41 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:ebeb5d44
Feb 13 04:06:41 gemelos kernel: ---[ end trace 27f5f5f360f2af7e ]---
Feb 13 07:43:36 gemelos kernel: divide error: 0000 [#3] SMP DEBUG_PAGEALLOC
Feb 13 07:43:36 gemelos kernel: CPU: 0 PID: 593 Comm: mysqld Tainted:
G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 07:43:36 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 07:43:36 gemelos kernel: task: ed650ab0 ti: dd742000 task.ti: dd742000
Feb 13 07:43:36 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 0
Feb 13 07:43:36 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 07:43:36 gemelos kernel: EAX: 000002c6 EBX: 00000000 ECX:
000002c6 EDX: 00000000
Feb 13 07:43:36 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
dd743d70 ESP: dd743d44
Feb 13 07:43:36 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 07:43:36 gemelos kernel: CR0: 80050033 CR2: b0934ab0 CR3:
2ae67000 CR4: 001407f0
Feb 13 07:43:36 gemelos kernel: Stack:
Feb 13 07:43:36 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffffa9e7 000002c6 000002c6 c10b850d
Feb 13 07:43:36 gemelos kernel: 00000000 c0000029 00000001 dd743da4
c10b86e0 00000000 00000000 00000000
Feb 13 07:43:36 gemelos kernel: 00010000 ffffffff 00000029 000002c7
00000000 00000087 00000047 c00560d4
Feb 13 07:43:36 gemelos kernel: Call Trace:
Feb 13 07:43:36 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 07:43:36 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 07:43:36 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 07:43:36 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 07:43:36 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 07:43:36 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 07:43:36 gemelos kernel: [<c10b39db>] ?
generic_file_read_iter+0x439/0x4fc
Feb 13 07:43:36 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 07:43:36 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 07:43:36 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 07:43:36 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 07:43:36 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 07:43:36 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 07:43:36 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 07:43:36 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:dd743d44
Feb 13 07:43:36 gemelos kernel: ---[ end trace 27f5f5f360f2af7f ]---
Feb 13 07:43:36 gemelos kernel: divide error: 0000 [#4] SMP DEBUG_PAGEALLOC
Feb 13 07:43:36 gemelos kernel: CPU: 6 PID: 586 Comm: mysqld Tainted:
G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 07:43:36 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 07:43:36 gemelos kernel: task: ec754050 ti: d4272000 task.ti: d4272000
Feb 13 07:43:36 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 6
Feb 13 07:43:36 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 07:43:36 gemelos kernel: EAX: 000002c6 EBX: 00000000 ECX:
000002c6 EDX: 00000000
Feb 13 07:43:36 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
d4273d70 ESP: d4273d44
Feb 13 07:43:36 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 07:43:36 gemelos kernel: CR0: 80050033 CR2: b7e1167c CR3:
2ae67000 CR4: 001407f0
Feb 13 07:43:36 gemelos kernel: Stack:
Feb 13 07:43:36 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffffa720 000002c6 000002c6 c10b850d
Feb 13 07:43:36 gemelos kernel: 00000000 c0000029 00000001 d4273da4
c10b86e0 00000000 00000000 00000000
Feb 13 07:43:36 gemelos kernel: 00010000 ffffffff 00000029 000002c7
00000000 00000087 00000048 c00560d4
Feb 13 07:43:36 gemelos kernel: Call Trace:
Feb 13 07:43:36 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 07:43:36 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 07:43:36 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 07:43:36 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 07:43:36 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 07:43:36 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 07:43:36 gemelos kernel: [<c10f1224>] ? d_delete+0x102/0x10a
Feb 13 07:43:36 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 07:43:36 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 07:43:36 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 07:43:36 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 07:43:36 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 07:43:36 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 07:43:36 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 07:43:36 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:d4273d44
Feb 13 07:43:36 gemelos kernel: ---[ end trace 27f5f5f360f2af80 ]---
Feb 13 07:43:36 gemelos kernel: divide error: 0000 [#5] SMP DEBUG_PAGEALLOC
Feb 13 07:43:36 gemelos kernel: CPU: 0 PID: 370 Comm: mysqld Tainted:
G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 07:43:36 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 07:43:36 gemelos kernel: task: ecda4500 ti: ec188000 task.ti: ec188000
Feb 13 07:43:36 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 0
Feb 13 07:43:36 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 07:43:36 gemelos kernel: EAX: 000002c6 EBX: 00000000 ECX:
000002c6 EDX: 00000000
Feb 13 07:43:36 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
ec189d70 ESP: ec189d44
Feb 13 07:43:36 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 07:43:36 gemelos kernel: CR0: 80050033 CR2: b0934ab0 CR3:
2ae67000 CR4: 001407f0
Feb 13 07:43:36 gemelos kernel: Stack:
Feb 13 07:43:36 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffff9ecb 000002c6 000002c6 c10b850d
Feb 13 07:43:36 gemelos kernel: 00000000 c0000029 00000001 ec189da4
c10b86e0 00000000 00000000 00000000
Feb 13 07:43:36 gemelos kernel: 00010000 ffffffff 00000029 000002c7
00000000 00000087 0000004b c00560d4
Feb 13 07:43:36 gemelos kernel: Call Trace:
Feb 13 07:43:36 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 07:43:36 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 07:43:36 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 07:43:36 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 07:43:36 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 07:43:36 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 07:43:36 gemelos kernel: [<c10b39db>] ?
generic_file_read_iter+0x439/0x4fc
Feb 13 07:43:36 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 07:43:36 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 07:43:36 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 07:43:36 gemelos kernel: [<c10e2622>] SyS_pwrite64+0x4e/0x75
Feb 13 07:43:36 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 07:43:36 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 07:43:36 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 07:43:36 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:ec189d44
Feb 13 07:43:36 gemelos kernel: ---[ end trace 27f5f5f360f2af81 ]---
Feb 13 14:33:42 gemelos kernel: divide error: 0000 [#6] SMP DEBUG_PAGEALLOC
Feb 13 14:33:42 gemelos kernel: CPU: 6 PID: 1914 Comm: mysqld Tainted:
G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 14:33:42 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 14:33:42 gemelos kernel: task: ecc6d540 ti: d4284000 task.ti: d4284000
Feb 13 14:33:42 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 6
Feb 13 14:33:42 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 14:33:42 gemelos kernel: EAX: 000002e5 EBX: 00000000 ECX:
000002e5 EDX: 00000000
Feb 13 14:33:42 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
d4285d70 ESP: d4285d44
Feb 13 14:33:42 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 14:33:42 gemelos kernel: CR0: 80050033 CR2: b7d40d5c CR3:
2ae67000 CR4: 001407f0
Feb 13 14:33:42 gemelos kernel: Stack:
Feb 13 14:33:42 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffffabf2 000002e5 000002e5 c10b850d
Feb 13 14:33:42 gemelos kernel: 00000000 c0000029 00000001 d4285da4
c10b86e0 00000000 00000000 00000000
Feb 13 14:33:42 gemelos kernel: 00010000 ffffffff 00000029 000002e6
00000000 00000087 00000045 c00560d4
Feb 13 14:33:42 gemelos kernel: Call Trace:
Feb 13 14:33:42 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 14:33:42 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 14:33:42 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 14:33:42 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 14:33:42 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 14:33:42 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 14:33:42 gemelos kernel: [<c10e1616>] ? noop_llseek+0xd/0xd
Feb 13 14:33:42 gemelos kernel: [<c116a24a>] ? ext4_llseek+0x9d/0x3a0
Feb 13 14:33:42 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 14:33:42 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 14:33:42 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 14:33:42 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 14:33:42 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 14:33:42 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 14:33:42 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 14:33:42 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:d4285d44
Feb 13 14:33:42 gemelos kernel: ---[ end trace 27f5f5f360f2af82 ]---
Feb 13 14:33:42 gemelos kernel: divide error: 0000 [#7] SMP DEBUG_PAGEALLOC
Feb 13 14:33:42 gemelos kernel: CPU: 4 PID: 2066 Comm: apache2
Tainted: G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 14:33:42 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 14:33:42 gemelos kernel: task: ed446050 ti: d8dde000 task.ti: d8dde000
Feb 13 14:33:42 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 4
Feb 13 14:33:42 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 14:33:42 gemelos kernel: EAX: 000002e5 EBX: 00000000 ECX:
000002e5 EDX: 00000000
Feb 13 14:33:42 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
d8ddfd70 ESP: d8ddfd44
Feb 13 14:33:42 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 14:33:42 gemelos kernel: CR0: 80050033 CR2: b7e18a58 CR3:
1825e000 CR4: 001407f0
Feb 13 14:33:42 gemelos kernel: Stack:
Feb 13 14:33:42 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffffa626 000002e5 000002e5 c10b850d
Feb 13 14:33:42 gemelos kernel: 00000000 c0000029 00000001 d8ddfda4
c10b86e0 00000000 00000000 00000000
Feb 13 14:33:42 gemelos kernel: 00010000 ffffffff 00000029 000002e6
00000000 00000087 00000047 c00560d4
Feb 13 14:33:42 gemelos kernel: Call Trace:
Feb 13 14:33:42 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 14:33:42 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 14:33:42 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 14:33:42 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 14:33:42 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 14:33:42 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 14:33:42 gemelos kernel: [<c12204ae>] ? __copy_to_user_ll+0x1f/0x51
Feb 13 14:33:42 gemelos kernel: [<c10e1616>] ? noop_llseek+0xd/0xd
Feb 13 14:33:42 gemelos kernel: [<c116a24a>] ? ext4_llseek+0x9d/0x3a0
Feb 13 14:33:42 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 14:33:42 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 14:33:42 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 14:33:42 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 14:33:42 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 14:33:42 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 14:33:42 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:d8ddfd44
Feb 13 14:33:42 gemelos kernel: ---[ end trace 27f5f5f360f2af83 ]---
Feb 13 14:33:42 gemelos kernel: divide error: 0000 [#8] SMP DEBUG_PAGEALLOC
Feb 13 14:33:42 gemelos kernel: CPU: 4 PID: 2301 Comm: apache2
Tainted: G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 14:33:42 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 14:33:42 gemelos kernel: task: ecc6f090 ti: ec260000 task.ti: ec260000
Feb 13 14:33:42 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 4
Feb 13 14:33:42 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 14:33:42 gemelos kernel: EAX: 000002e5 EBX: 00000000 ECX:
000002e5 EDX: 00000000
Feb 13 14:33:42 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
ec261d70 ESP: ec261d44
Feb 13 14:33:42 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 14:33:42 gemelos kernel: CR0: 80050033 CR2: bf89666c CR3:
2bc22000 CR4: 001407f0
Feb 13 14:33:42 gemelos kernel: Stack:
Feb 13 14:33:42 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffff9d74 000002e5 000002e5 c10b850d
Feb 13 14:33:42 gemelos kernel: 00000000 c0000029 00000001 ec261da4
c10b86e0 00000000 00000000 00000000
Feb 13 14:33:42 gemelos kernel: 00010000 ffffffff 00000029 000002e6
00000000 00000087 0000004a c00560d4
Feb 13 14:33:42 gemelos kernel: Call Trace:
Feb 13 14:33:42 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 14:33:42 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 14:33:42 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 14:33:42 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 14:33:42 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 14:33:42 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 14:33:42 gemelos kernel: [<c10cdec6>] ? handle_mm_fault+0x859/0x8b6
Feb 13 14:33:42 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 14:33:42 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 14:33:42 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 14:33:42 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 14:33:42 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 14:33:42 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 14:33:42 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:ec261d44
Feb 13 14:33:42 gemelos kernel: ---[ end trace 27f5f5f360f2af84 ]---
Feb 13 14:33:42 gemelos kernel: divide error: 0000 [#9] SMP DEBUG_PAGEALLOC
Feb 13 14:33:42 gemelos kernel: CPU: 0 PID: 1959 Comm: mysqld Tainted:
G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 14:33:42 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 14:33:42 gemelos kernel: task: ed7b5540 ti: ebed2000 task.ti: ebed2000
Feb 13 14:33:42 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 0
Feb 13 14:33:42 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 14:33:42 gemelos kernel: EAX: 000002e5 EBX: 00000000 ECX:
000002e5 EDX: 00000000
Feb 13 14:33:42 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
ebed3d70 ESP: ebed3d44
Feb 13 14:33:42 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 14:33:42 gemelos kernel: CR0: 80050033 CR2: 90af5f60 CR3:
2ae67000 CR4: 001407f0
Feb 13 14:33:42 gemelos kernel: Stack:
Feb 13 14:33:42 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffff94c2 000002e5 000002e5 c10b850d
Feb 13 14:33:42 gemelos kernel: 00000000 c0000029 00000001 ebed3da4
c10b86e0 00000000 00000000 00000000
Feb 13 14:33:42 gemelos kernel: 00010000 ffffffff 00000029 000002e6
00000000 00000087 0000004d c00560d4
Feb 13 14:33:42 gemelos kernel: Call Trace:
Feb 13 14:33:42 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 14:33:42 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 14:33:42 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 14:33:42 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 14:33:42 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 14:33:42 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 14:33:42 gemelos kernel: [<c106a5d5>] ? hrtimer_forward+0xf5/0x11e
Feb 13 14:33:42 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 14:33:42 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 14:33:42 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 14:33:42 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 14:33:42 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 14:33:42 gemelos kernel: [<c14c0000>] ? set_mode+0x171/0x1d3
Feb 13 14:33:42 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 14:33:42 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:ebed3d44
Feb 13 14:33:42 gemelos kernel: ---[ end trace 27f5f5f360f2af85 ]---
Feb 13 14:33:43 gemelos kernel: divide error: 0000 [#10] SMP DEBUG_PAGEALLOC
Feb 13 14:33:43 gemelos kernel: CPU: 2 PID: 1961 Comm: apache2
Tainted: G      D        3.18.5ww7_vanilla1_debug #1
Feb 13 14:33:43 gemelos kernel: Hardware name: Dell Inc. PowerEdge
R210 II/03X6X0, BIOS 2.7.0 11/15/2013
Feb 13 14:33:43 gemelos kernel: task: eadf5050 ti: eac62000 task.ti: eac62000
Feb 13 14:33:43 gemelos kernel: EIP: 0060:[<c1220c87>] EFLAGS: 00210246 CPU: 2
Feb 13 14:33:43 gemelos kernel: EIP is at div64_u64+0x2d/0x10f
Feb 13 14:33:43 gemelos kernel: EAX: 000002e5 EBX: 00000000 ECX:
000002e5 EDX: 00000000
Feb 13 14:33:43 gemelos kernel: ESI: 00000000 EDI: 00000000 EBP:
eac63d70 ESP: eac63d44
Feb 13 14:33:43 gemelos kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Feb 13 14:33:43 gemelos kernel: CR0: 80050033 CR2: b7cae0c8 CR3:
2aea7000 CR4: 001407f0
Feb 13 14:33:43 gemelos kernel: Stack:
Feb 13 14:33:43 gemelos kernel: 00000000 ffffffff 00000000 00000000
ffff91dc 000002e5 000002e5 c10b850d
Feb 13 14:33:43 gemelos kernel: 00000000 c0000029 00000001 eac63da4
c10b86e0 00000000 00000000 00000000
Feb 13 14:33:43 gemelos kernel: 00010000 ffffffff 00000029 000002e6
00000000 00000087 0000004e c00560d4
Feb 13 14:33:43 gemelos kernel: Call Trace:
Feb 13 14:33:43 gemelos kernel: [<c10b850d>] ? pos_ratio_polynom+0x25/0x77
Feb 13 14:33:43 gemelos kernel: [<c10b86e0>] bdi_position_ratio+0x181/0x1dc
Feb 13 14:33:43 gemelos kernel: [<c10b9899>]
balance_dirty_pages_ratelimited+0x366/0x656
Feb 13 14:33:43 gemelos kernel: [<c10b2c89>] generic_perform_write+0x110/0x151
Feb 13 14:33:43 gemelos kernel: [<c10b3ed7>]
__generic_file_write_iter+0x2ed/0x333
Feb 13 14:33:43 gemelos kernel: [<c116a9e0>] ext4_file_write_iter+0x2d0/0x460
Feb 13 14:33:43 gemelos kernel: [<c12204ae>] ? __copy_to_user_ll+0x1f/0x51
Feb 13 14:33:43 gemelos kernel: [<c10e1616>] ? noop_llseek+0xd/0xd
Feb 13 14:33:43 gemelos kernel: [<c116a24a>] ? ext4_llseek+0x9d/0x3a0
Feb 13 14:33:43 gemelos kernel: [<c10e19cd>] new_sync_write+0x5c/0x83
Feb 13 14:33:43 gemelos kernel: [<c10e1971>] ? new_sync_read+0x80/0x80
Feb 13 14:33:43 gemelos kernel: [<c10e207e>] vfs_write+0x97/0x16d
Feb 13 14:33:43 gemelos kernel: [<c10e251f>] SyS_write+0x3f/0x7f
Feb 13 14:33:43 gemelos kernel: [<c14c5148>] sysenter_do_call+0x12/0x12
Feb 13 14:33:43 gemelos kernel: Code: e5 57 56 53 8d 7d 08 83 ec 20 8b
37 8b 7f 04 89 45 e4 89 55 e8 85 ff 75 35 8b 4d e8 39 f1 89 4d ec 73
04 31 c9 eb 12 89 c8 31 d2 <f7> f6 31 d2 89 c1 8b 45 ec f7 f6 89 55 ec
8b 5d e4 8b 55 ec 89
Feb 13 14:33:43 gemelos kernel: EIP: [<c1220c87>] div64_u64+0x2d/0x10f
SS:ESP 0068:eac63d44
Feb 13 14:33:43 gemelos kernel: ---[ end trace 27f5f5f360f2af86 ]---


On Thu, Feb 5, 2015 at 3:43 AM, Frans Klaver <fransklaver@...il.com> wrote:
> On Thu, Feb 5, 2015 at 9:39 AM, Frans Klaver <fransklaver@...il.com> wrote:
>> On Thu, Feb 5, 2015 at 5:08 AM, william <william@...sse.org> wrote:
>>> 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 ?
>
> I forgot to mention that the eventual fix is not the original patch
> submission. d5c9fde3dae75088916 (mm/page-writeback.c: fix divide by
> zero in pos_ratio_polynom) ended up being merged.
>
> Frans



-- 
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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