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@xxxxxxxxxx -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>