* Re: kernel 3.18.10: THP refcounting bug [not found] ` <20150401113122.GA17153@node.dhcp.inet.fi> @ 2015-04-01 11:53 ` Stefan Priebe - Profihost AG 2015-04-01 13:41 ` Kirill A. Shutemov [not found] ` <551BDB8F.4070707@profihost.ag> 1 sibling, 1 reply; 5+ messages in thread From: Stefan Priebe - Profihost AG @ 2015-04-01 11:53 UTC (permalink / raw) To: linux-mm; +Cc: Kirill A. Shutemov, sasha.levin Hi, while using 3.18.9 i got several times the following stack trace: kernel BUG at mm/filemap.c:203! invalid opcode: 0000 [#1] SMP Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common virtio_ring ata_piix virtio floppy CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014 task: ffff880137b98000 ti: ffff880137b94000 task.ti: ffff880137b94000 RIP: 0010:[<ffffffff81134495>] [<ffffffff81134495>] __delete_from_page_cache+0x2b5/0x2c0 RSP: 0018:ffff880137b97be8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffd0 RDX: 0000000000000030 RSI: 000000000000000a RDI: ffff88013f9696c0 RBP: ffff880137b97c38 R08: 0000000000000000 R09: ffffea0002e927c0 R10: ffff8800bba92da0 R11: ffff880137b97c00 R12: ffffea0002e92480 R13: ffff8800bba8c4c8 R14: 0000000000000000 R15: ffff8800bba8c4d0 FS: 00007f5a79e0b700(0000) GS:ffff880139060000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000023c3138 CR3: 00000000b84ba000 CR4: 00000000000006e0 Stack: 000000000000000e ffff880137b97d48 ffff8800bba92da0 ffff8800bba92dc8 ffff880137b97c68 ffffea0002e92480 ffff8800bba8c4c8 0000000000000000 0000000000000000 0000000000000000 ffff880137b97c68 ffffffff81134604 Call Trace: [<ffffffff81134604>] delete_from_page_cache+0x44/0x70 [<ffffffff811413cb>] truncate_inode_page+0x5b/0x90 [<ffffffff811415a4>] truncate_inode_pages_range+0x1a4/0x6c0 [<ffffffff81141b45>] truncate_inode_pages+0x15/0x20 [<ffffffff81141c4c>] truncate_inode_pages_final+0x3c/0x50 [<ffffffff811bb83c>] evict+0x16c/0x180 [<ffffffff811bbed5>] iput+0x105/0x190 [<ffffffff811b0c19>] do_unlinkat+0x189/0x2b0 [<ffffffff811b1a46>] SyS_unlink+0x16/0x20 [<ffffffff815f6592>] system_call_fastpath+0x12/0x17 Code: 66 0f 1f 44 00 00 48 8b 75 c0 4c 89 ff e8 e4 5d 1f 00 84 c0 0f 85 5e fe ff ff e9 41 fe ff ff 0f 1f 80 00 00 00 00 e8 75 70 4b 00 <0f> 0b 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 83 e2 fd 48 RIP [<ffffffff81134495>] __delete_from_page_cache+0x2b5/0x2c0 RSP <ffff880137b97be8> ---[ end trace a4727cb71335dbd4 ]--- Is this a known bug? Thanks! -- Greets, Stefan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kernel 3.18.10: THP refcounting bug 2015-04-01 11:53 ` kernel 3.18.10: THP refcounting bug Stefan Priebe - Profihost AG @ 2015-04-01 13:41 ` Kirill A. Shutemov 2015-04-01 20:09 ` Hugh Dickins 2015-04-01 20:10 ` Konstantin Khlebnikov 0 siblings, 2 replies; 5+ messages in thread From: Kirill A. Shutemov @ 2015-04-01 13:41 UTC (permalink / raw) To: Stefan Priebe - Profihost AG Cc: linux-mm, sasha.levin, Hugh Dickins, Konstantin Khlebnikov On Wed, Apr 01, 2015 at 01:53:51PM +0200, Stefan Priebe - Profihost AG wrote: > Hi, > > while using 3.18.9 i got several times the following stack trace: > > kernel BUG at mm/filemap.c:203! > invalid opcode: 0000 [#1] SMP > Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic > virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common > virtio_ring ata_piix virtio floppy > CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014 > task: ffff880137b98000 ti: ffff880137b94000 task.ti: ffff880137b94000 > RIP: 0010:[<ffffffff81134495>] [<ffffffff81134495>] > __delete_from_page_cache+0x2b5/0x2c0 > RSP: 0018:ffff880137b97be8 EFLAGS: 00010046 > RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffd0 > RDX: 0000000000000030 RSI: 000000000000000a RDI: ffff88013f9696c0 > RBP: ffff880137b97c38 R08: 0000000000000000 R09: ffffea0002e927c0 > R10: ffff8800bba92da0 R11: ffff880137b97c00 R12: ffffea0002e92480 > R13: ffff8800bba8c4c8 R14: 0000000000000000 R15: ffff8800bba8c4d0 > FS: 00007f5a79e0b700(0000) GS:ffff880139060000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00000000023c3138 CR3: 00000000b84ba000 CR4: 00000000000006e0 > Stack: > 000000000000000e ffff880137b97d48 ffff8800bba92da0 ffff8800bba92dc8 > ffff880137b97c68 ffffea0002e92480 ffff8800bba8c4c8 0000000000000000 > 0000000000000000 0000000000000000 ffff880137b97c68 ffffffff81134604 > Call Trace: > [<ffffffff81134604>] delete_from_page_cache+0x44/0x70 > [<ffffffff811413cb>] truncate_inode_page+0x5b/0x90 > [<ffffffff811415a4>] truncate_inode_pages_range+0x1a4/0x6c0 > [<ffffffff81141b45>] truncate_inode_pages+0x15/0x20 > [<ffffffff81141c4c>] truncate_inode_pages_final+0x3c/0x50 > [<ffffffff811bb83c>] evict+0x16c/0x180 > [<ffffffff811bbed5>] iput+0x105/0x190 > [<ffffffff811b0c19>] do_unlinkat+0x189/0x2b0 > [<ffffffff811b1a46>] SyS_unlink+0x16/0x20 > [<ffffffff815f6592>] system_call_fastpath+0x12/0x17 > Code: 66 0f 1f 44 00 00 48 8b 75 c0 4c 89 ff e8 e4 5d 1f 00 84 c0 0f 85 > 5e fe ff ff e9 41 fe ff ff 0f 1f 80 00 00 00 00 e8 75 70 4b 00 <0f> 0b > 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 83 e2 fd 48 > RIP [<ffffffff81134495>] __delete_from_page_cache+0x2b5/0x2c0 > RSP <ffff880137b97be8> > ---[ end trace a4727cb71335dbd4 ]--- > > Is this a known bug? +Hugh, Konstantin. Nothing I recognize. Looks somewhat like[1], but not really. Do you have a way to reproduce? What fs it was? [1] lkml.kernel.org/g/20140603042121.GA27177@redhat.com -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kernel 3.18.10: THP refcounting bug 2015-04-01 13:41 ` Kirill A. Shutemov @ 2015-04-01 20:09 ` Hugh Dickins 2015-04-01 20:10 ` Konstantin Khlebnikov 1 sibling, 0 replies; 5+ messages in thread From: Hugh Dickins @ 2015-04-01 20:09 UTC (permalink / raw) To: Kirill A. Shutemov Cc: Stefan Priebe - Profihost AG, linux-mm, sasha.levin, Hugh Dickins, Konstantin Khlebnikov On Wed, 1 Apr 2015, Kirill A. Shutemov wrote: > On Wed, Apr 01, 2015 at 01:53:51PM +0200, Stefan Priebe - Profihost AG wrote: > > Hi, > > > > while using 3.18.9 i got several times the following stack trace: > > > > kernel BUG at mm/filemap.c:203! > > invalid opcode: 0000 [#1] SMP > > Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic > > virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common > > virtio_ring ata_piix virtio floppy > > CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1 The "B" in that Tainted string means that earlier Stefan got a "Bad page" report. Please look for that in /var/log/messages, and post us what it said. It's not at all surprising to hit a BUG_ON(page_mapped(page)) after we already know that the page refcounting is messed up; though of course it's possible that the two are unrelated (and perhaps weeks apart). > > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > > rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014 > > task: ffff880137b98000 ti: ffff880137b94000 task.ti: ffff880137b94000 > > RIP: 0010:[<ffffffff81134495>] [<ffffffff81134495>] > > __delete_from_page_cache+0x2b5/0x2c0 > > RSP: 0018:ffff880137b97be8 EFLAGS: 00010046 > > RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffd0 > > RDX: 0000000000000030 RSI: 000000000000000a RDI: ffff88013f9696c0 > > RBP: ffff880137b97c38 R08: 0000000000000000 R09: ffffea0002e927c0 > > R10: ffff8800bba92da0 R11: ffff880137b97c00 R12: ffffea0002e92480 > > R13: ffff8800bba8c4c8 R14: 0000000000000000 R15: ffff8800bba8c4d0 > > FS: 00007f5a79e0b700(0000) GS:ffff880139060000(0000) knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > CR2: 00000000023c3138 CR3: 00000000b84ba000 CR4: 00000000000006e0 > > Stack: > > 000000000000000e ffff880137b97d48 ffff8800bba92da0 ffff8800bba92dc8 > > ffff880137b97c68 ffffea0002e92480 ffff8800bba8c4c8 0000000000000000 > > 0000000000000000 0000000000000000 ffff880137b97c68 ffffffff81134604 > > Call Trace: > > [<ffffffff81134604>] delete_from_page_cache+0x44/0x70 > > [<ffffffff811413cb>] truncate_inode_page+0x5b/0x90 > > [<ffffffff811415a4>] truncate_inode_pages_range+0x1a4/0x6c0 > > [<ffffffff81141b45>] truncate_inode_pages+0x15/0x20 > > [<ffffffff81141c4c>] truncate_inode_pages_final+0x3c/0x50 > > [<ffffffff811bb83c>] evict+0x16c/0x180 > > [<ffffffff811bbed5>] iput+0x105/0x190 > > [<ffffffff811b0c19>] do_unlinkat+0x189/0x2b0 > > [<ffffffff811b1a46>] SyS_unlink+0x16/0x20 > > [<ffffffff815f6592>] system_call_fastpath+0x12/0x17 > > Code: 66 0f 1f 44 00 00 48 8b 75 c0 4c 89 ff e8 e4 5d 1f 00 84 c0 0f 85 > > 5e fe ff ff e9 41 fe ff ff 0f 1f 80 00 00 00 00 e8 75 70 4b 00 <0f> 0b > > 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 83 e2 fd 48 > > RIP [<ffffffff81134495>] __delete_from_page_cache+0x2b5/0x2c0 > > RSP <ffff880137b97be8> > > ---[ end trace a4727cb71335dbd4 ]--- > > > > Is this a known bug? > > +Hugh, Konstantin. > > Nothing I recognize. Looks somewhat like[1], but not really. > > Do you have a way to reproduce? What fs it was? > > [1] lkml.kernel.org/g/20140603042121.GA27177@redhat.com I put a lot of thought into that one, but never found a convincing answer. Either it went away, or Dave grew tired of re-reporting it and getting no fix. For an instant, I wondered if your recent discovery of page mapcount being used for two purposes on a compound tail could account for these; but I don't think so, Stefan's stacktrace shows we're dealing with an ordinary filesystem page, which should be neither compound nor tail. Hugh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kernel 3.18.10: THP refcounting bug 2015-04-01 13:41 ` Kirill A. Shutemov 2015-04-01 20:09 ` Hugh Dickins @ 2015-04-01 20:10 ` Konstantin Khlebnikov 1 sibling, 0 replies; 5+ messages in thread From: Konstantin Khlebnikov @ 2015-04-01 20:10 UTC (permalink / raw) To: Kirill A. Shutemov Cc: Stefan Priebe - Profihost AG, linux-mm@kvack.org, Sasha Levin, Hugh Dickins On Wed, Apr 1, 2015 at 4:41 PM, Kirill A. Shutemov <kirill@shutemov.name> wrote: > On Wed, Apr 01, 2015 at 01:53:51PM +0200, Stefan Priebe - Profihost AG wrote: >> Hi, >> >> while using 3.18.9 i got several times the following stack trace: >> >> kernel BUG at mm/filemap.c:203! >> invalid opcode: 0000 [#1] SMP >> Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic >> virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common >> virtio_ring ata_piix virtio floppy >> CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1 As I see this isn't first oops -> kernel already tainted with 'B' Bad-page-state. Please look at first splash where is no 'B' flag. >> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS >> rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014 >> task: ffff880137b98000 ti: ffff880137b94000 task.ti: ffff880137b94000 >> RIP: 0010:[<ffffffff81134495>] [<ffffffff81134495>] >> __delete_from_page_cache+0x2b5/0x2c0 >> RSP: 0018:ffff880137b97be8 EFLAGS: 00010046 >> RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffd0 >> RDX: 0000000000000030 RSI: 000000000000000a RDI: ffff88013f9696c0 >> RBP: ffff880137b97c38 R08: 0000000000000000 R09: ffffea0002e927c0 >> R10: ffff8800bba92da0 R11: ffff880137b97c00 R12: ffffea0002e92480 >> R13: ffff8800bba8c4c8 R14: 0000000000000000 R15: ffff8800bba8c4d0 >> FS: 00007f5a79e0b700(0000) GS:ffff880139060000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00000000023c3138 CR3: 00000000b84ba000 CR4: 00000000000006e0 >> Stack: >> 000000000000000e ffff880137b97d48 ffff8800bba92da0 ffff8800bba92dc8 >> ffff880137b97c68 ffffea0002e92480 ffff8800bba8c4c8 0000000000000000 >> 0000000000000000 0000000000000000 ffff880137b97c68 ffffffff81134604 >> Call Trace: >> [<ffffffff81134604>] delete_from_page_cache+0x44/0x70 >> [<ffffffff811413cb>] truncate_inode_page+0x5b/0x90 >> [<ffffffff811415a4>] truncate_inode_pages_range+0x1a4/0x6c0 >> [<ffffffff81141b45>] truncate_inode_pages+0x15/0x20 >> [<ffffffff81141c4c>] truncate_inode_pages_final+0x3c/0x50 >> [<ffffffff811bb83c>] evict+0x16c/0x180 >> [<ffffffff811bbed5>] iput+0x105/0x190 >> [<ffffffff811b0c19>] do_unlinkat+0x189/0x2b0 >> [<ffffffff811b1a46>] SyS_unlink+0x16/0x20 >> [<ffffffff815f6592>] system_call_fastpath+0x12/0x17 >> Code: 66 0f 1f 44 00 00 48 8b 75 c0 4c 89 ff e8 e4 5d 1f 00 84 c0 0f 85 >> 5e fe ff ff e9 41 fe ff ff 0f 1f 80 00 00 00 00 e8 75 70 4b 00 <0f> 0b >> 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 83 e2 fd 48 >> RIP [<ffffffff81134495>] __delete_from_page_cache+0x2b5/0x2c0 >> RSP <ffff880137b97be8> >> ---[ end trace a4727cb71335dbd4 ]--- >> >> Is this a known bug? > > +Hugh, Konstantin. > > Nothing I recognize. Looks somewhat like[1], but not really. > > Do you have a way to reproduce? What fs it was? > > [1] lkml.kernel.org/g/20140603042121.GA27177@redhat.com > > -- > Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <551BDB8F.4070707@profihost.ag>]
[parent not found: <551C12CC.3000803@oracle.com>]
[parent not found: <551C39EE.90504@profihost.ag>]
* Re: kernel 3.18.10: THP refcounting bug [not found] ` <551C39EE.90504@profihost.ag> @ 2015-04-01 20:13 ` Sasha Levin 0 siblings, 0 replies; 5+ messages in thread From: Sasha Levin @ 2015-04-01 20:13 UTC (permalink / raw) To: Stefan Priebe Cc: Kirill A. Shutemov, linux-mm@kvack.org, Hugh Dickins, Konstantin Khlebnikov linux-mm@ was incorrect in the original mail so this ended up getting around just between us. Below is Stefan's response to my question about the 'B' taint flag. On 04/01/2015 02:33 PM, Stefan Priebe wrote: > > Am 01.04.2015 um 17:46 schrieb Sasha Levin: >> On 04/01/2015 07:50 AM, Stefan Priebe - Profihost AG wrote: >>> Hi, >>> >>> while using 3.18.9 i got several times the following stack trace: >>> >>> kernel BUG at mm/filemap.c:203! >>> invalid opcode: 0000 [#1] SMP >>> Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic >>> virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common >>> virtio_ring ata_piix virtio floppy >>> CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1 >> >> Looking at the taint flags, was there anything else before this that >> could set the 'B' flag? > > oh i'm sorry you're correct before that one i see (happens on shutdown): > > BUG: Bad page map in process udevd pte:ba4a2025 pmd:ba275067 > page:ffffea0002e92880 count:1 mapcount:-1 mapping:ffff8800bba8c4c8 index:0x10 > flags: 0x1fffff8000007c(referenced|uptodate|dirty|lru|active) > page dumped because: bad pte > addr:0000000000410000 vm_flags:00000875 anon_vma: (null) mapping:ffff8800bba8c4c8 index:10 > vma->vm_ops->fault: filemap_fault+0x0/0x480 > vma->vm_file->f_op->mmap: generic_file_mmap+0x0/0x60 > CPU: 7 PID: 105 Comm: udevd Not tainted 3.18.9+14-ph #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/201 > 4 > ffff880136ca58c0 ffff8800b9c8bc58 ffffffff815f0732 00000000072b072b > 0000000000410000 ffff8800b9c8bca8 ffffffff8115b5b6 00000000ba4a2025 > 0000000000000010 ffff8800b9c8bca8 0000000000424000 ffff8800ba275080 > Call Trace: > [<ffffffff815f0732>] dump_stack+0x46/0x58 > [<ffffffff8115b5b6>] print_bad_pte+0x196/0x240 > [<ffffffff8115d3c9>] unmap_single_vma+0x729/0x7f0 > [<ffffffff8115d801>] unmap_vmas+0x51/0xa0 > [<ffffffff811666c5>] exit_mmap+0xc5/0x170 > [<ffffffff810713c5>] mmput+0x55/0x100 > [<ffffffff8107631d>] do_exit+0x25d/0xa30 > [<ffffffff8116552f>] ? do_munmap+0x30f/0x3b0 > [<ffffffff81076b7f>] do_group_exit+0x3f/0xa0 > [<ffffffff81076bf7>] SyS_exit_group+0x17/0x20 > [<ffffffff815f6592>] system_call_fastpath+0x12/0x17 > Disabling lock debugging due to kernel taint > BUG: Bad page state in process udevd pfn:ba4a2 > page:ffffea0002e92880 count:0 mapcount:-1 mapping:ffff8800bba8c4c8 index:0x10 > flags: 0x1fffff8000001c(referenced|uptodate|dirty) > page dumped because: non-NULL mapping > Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_co > mmon virtio_ring ata_piix virtio floppy > CPU: 7 PID: 105 Comm: udevd Tainted: G B 3.18.9+14-ph #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/201 > 4 > ffffffff81805618 ffff8800b9c8bba8 ffffffff815f0732 0000000007700770 > ffffea0002e92880 ffff8800b9c8bbd8 ffffffff815eb801 0000000000000000 > ffffea0002e92880 0000000000000000 000fffff80000000 ffff8800b9c8bc28 > Call Trace: > [<ffffffff815f0732>] dump_stack+0x46/0x58 > [<ffffffff815eb801>] bad_page+0xf7/0x115 > [<ffffffff81137c22>] free_pages_prepare+0x152/0x180 > [<ffffffff8113a130>] free_hot_cold_page+0x40/0x160 > [<ffffffff8113a29e>] free_hot_cold_page_list+0x4e/0xa0 > [<ffffffff8113fcd3>] release_pages+0x1f3/0x280 > [<ffffffff8117142d>] free_pages_and_swap_cache+0x8d/0xa0 > [<ffffffff8115b6c4>] tlb_flush_mmu_free+0x34/0x60 > [<ffffffff8115bbe4>] tlb_flush_mmu+0x24/0x30 > [<ffffffff8115bc04>] tlb_finish_mmu+0x14/0x40 > [<ffffffff811666f4>] exit_mmap+0xf4/0x170 > [<ffffffff810713c5>] mmput+0x55/0x100 > [<ffffffff8107631d>] do_exit+0x25d/0xa30 > [<ffffffff8116552f>] ? do_munmap+0x30f/0x3b0 > [<ffffffff81076b7f>] do_group_exit+0x3f/0xa0 > [<ffffffff81076bf7>] SyS_exit_group+0x17/0x20 > [<ffffffff815f6592>] system_call_fastpath+0x12/0x17 > ------------[ cut here ]------------ > > > Stefan > >> >> >> Thanks, >> Sasha >> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] ` <20150401113122.GA17153@node.dhcp.inet.fi>
2015-04-01 11:53 ` kernel 3.18.10: THP refcounting bug Stefan Priebe - Profihost AG
2015-04-01 13:41 ` Kirill A. Shutemov
2015-04-01 20:09 ` Hugh Dickins
2015-04-01 20:10 ` Konstantin Khlebnikov
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2015-04-01 20:13 ` Sasha Levin
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