On 2010.11.15 at 13:38 +0100, Markus Trippelsdorf wrote: > On 2010.11.12 at 13:20 +0100, Markus Trippelsdorf wrote: > > > > Yes. Fortunately the BUG is gone since I pulled the upcoming drm fixes > > No. I happend again today (with those fixes already applied): > > BUG: Bad page state in process knode pfn:7f0a8 > page:ffffea0001bca4c0 count:0 mapcount:0 mapping: (null) index:0x0 > page flags: 0x4000000000000008(uptodate) > Pid: 18310, comm: knode Not tainted 2.6.37-rc1-00549-gae712bf-dirty #16 > Call Trace: > [<ffffffff810a9022>] ? bad_page+0x92/0xe0 > [<ffffffff810aa240>] ? get_page_from_freelist+0x4b0/0x570 > [<ffffffff8102e50e>] ? apic_timer_interrupt+0xe/0x20 > [<ffffffff810aa413>] ? __alloc_pages_nodemask+0x113/0x6b0 > [<ffffffff810a2dd4>] ? file_read_actor+0xc4/0x190 > [<ffffffff810a4a70>] ? generic_file_aio_read+0x560/0x6b0 > [<ffffffff810bdf8d>] ? handle_mm_fault+0x6bd/0x970 > [<ffffffff8104b1d0>] ? do_page_fault+0x120/0x410 > [<ffffffff810c3d85>] ? do_brk+0x275/0x360 > [<ffffffff81452d8f>] ? page_fault+0x1f/0x30 > Disabling lock debugging due to kernel taint And another one. But this time it seems to point to ext4: BUG: Bad page state in process rm pfn:52e54 page:ffffea0001222260 count:0 mapcount:0 mapping: (null) index:0x0 page flags: 0x4000000000000008(uptodate) Pid: 2084, comm: rm Not tainted 2.6.37-rc1-00549-gae712bf-dirty #23 Call Trace: [<ffffffff810a9022>] ? bad_page+0x92/0xe0 [<ffffffff810aa240>] ? get_page_from_freelist+0x4b0/0x570 [<ffffffff81142ae6>] ? ext4_ext_put_in_cache+0x46/0x90 [<ffffffff810aa413>] ? __alloc_pages_nodemask+0x113/0x6b0 [<ffffffff8118f0c7>] ? number.clone.2+0x2b7/0x2f0 [<ffffffff810a38d5>] ? find_get_page+0x75/0xb0 [<ffffffff810a4011>] ? find_or_create_page+0x51/0xb0 [<ffffffff810ff4d7>] ? __getblk+0xd7/0x260 [<ffffffff8113158f>] ? ext4_getblk+0x8f/0x1e0 [<ffffffff811316ed>] ? ext4_bread+0xd/0x70 [<ffffffff811369f4>] ? htree_dirblock_to_tree+0x34/0x190 [<ffffffff8113870f>] ? ext4_htree_fill_tree+0x9f/0x250 [<ffffffff810e109d>] ? do_filp_open+0x12d/0x5e0 [<ffffffff811289ed>] ? ext4_readdir+0x14d/0x5a0 [<ffffffff810e4e80>] ? filldir+0x0/0xd0 [<ffffffff810e50a8>] ? vfs_readdir+0xa8/0xd0 [<ffffffff810e4e80>] ? filldir+0x0/0xd0 [<ffffffff810e51b1>] ? sys_getdents+0x81/0xf0 [<ffffffff8102dc2b>] ? system_call_fastpath+0x16/0x1b Disabling lock debugging due to kernel taint I don't know. Could a possible bug in linux/fs/ext4/page-io.c be responsible for something like this? -- Markus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>