buffer trace for buffer at 0xffff8100536bb038 (I am CPU 1) __block_commit_write():[fs/buffer.c:2100] mark dirty b_state:0x402b b_jlist:BJ_SyncData cpu:1 b_count:1 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:1 b_trans_is_comitting:0 b_jcount:0 pg_dirty:1 mark_buffer_dirty():[fs/buffer.c:1292] entry b_state:0x402b b_jlist:BJ_SyncData cpu:1 b_count:1 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:1 b_trans_is_comitting:0 b_jcount:0 pg_dirty:1 journal_submit_data_buffers():[fs/jbd/commit.c:242] needs writeout, adding to array b_state:0x10402d b_jlist:BJ_SyncData cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 __journal_file_buffer():[fs/jbd/transaction.c:1947] entry b_state:0x10402d b_jlist:BJ_SyncData cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 __journal_temp_unlink_buffer():[fs/jbd/transaction.c:1501] entry b_state:0x10402d b_jlist:BJ_SyncData cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 __journal_file_buffer():[fs/jbd/transaction.c:2010] filed b_state:0x10402d b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 submit_bh():[fs/buffer.c:2864] enter b_state:0x402d b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 submit_bh():[fs/buffer.c:2881] write b_state:0x402d b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 sync_buffer():[fs/buffer.c:66] enter b_state:0x402d b_jlist:BJ_Locked cpu:1 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:0 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x402d b_jlist:BJ_Locked cpu:0 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:0 end_buffer_write_sync():[fs/buffer.c:140] uptodate b_state:0x402f b_jlist:BJ_Locked cpu:1 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 submit_bh():[fs/buffer.c:2864] enter b_state:0x412d b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 submit_bh():[fs/buffer.c:2881] write b_state:0x412d b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x412d b_jlist:BJ_Locked cpu:0 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 pg_dirty:1 journal_dirty_data():[fs/jbd/transaction.c:939] entry b_state:0x412f b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 journal_dirty_data():[fs/jbd/transaction.c:971] has transaction b_state:0x10412f b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 journal_dirty_data():[fs/jbd/transaction.c:973] belongs to older transaction b_state:0x10412f b_jlist:BJ_Locked cpu:1 b_count:2 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 sync_buffer():[fs/buffer.c:66] enter b_state:0x412f b_jlist:BJ_Locked cpu:1 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 sync_buffer():[fs/buffer.c:66] enter b_state:0x412f b_jlist:BJ_Locked cpu:1 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x412f b_jlist:BJ_Locked cpu:0 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x412f b_jlist:BJ_Locked cpu:0 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 end_buffer_async_write():[fs/buffer.c:594] enter b_state:0x412f b_jlist:BJ_Locked cpu:1 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 __journal_temp_unlink_buffer():[fs/jbd/transaction.c:1501] entry b_state:0x10402b b_jlist:BJ_Locked cpu:1 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:1 pg_dirty:1 journal_unmap_buffer():[fs/jbd/transaction.c:1763] entry b_state:0x402f b_jlist:BJ_None cpu:0 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 journal_unmap_buffer():[fs/jbd/transaction.c:1789] not on any transaction: zap b_state:0x10402f b_jlist:BJ_None cpu:0 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:2 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x4001 b_jlist:BJ_None cpu:0 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x4003 b_jlist:BJ_None cpu:0 b_count:3 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 submit_bh():[fs/buffer.c:2864] enter b_state:0x4005 b_jlist:BJ_None cpu:1 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x4005 b_jlist:BJ_None cpu:0 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 __set_page_dirty_buffers():[fs/buffer.c:869] set dirty b_state:0x4007 b_jlist:BJ_None cpu:0 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 sync_buffer():[fs/buffer.c:66] enter b_state:0x4007 b_jlist:BJ_None cpu:0 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 print_buffer_trace():[fs/jbd-kernel.c:228] b_state:0x4007 b_jlist:BJ_None cpu:1 b_count:4 b_blocknr:52735707 b_jbd:1 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:0 b_jcount:1 pg_dirty:1 b_blocknr:52735707 b_count:4 b_this_page:ffff810074eba1f8 b_data:ffff81004f576800 b_page:ffff8100023d6d80 b_jlist:0 b_frozen_data:0000000000000000 b_committed_data:0000000000000000 b_transaction:0000000000000000 b_next_transaction:0000000000000000 b_cp_transaction:0000000000000000 b_cpnext:0000000000000000 b_cpprev:0000000000000000 Call Trace: [] show_trace+0x34/0x47 [] dump_stack+0x12/0x17 [] print_buffer_trace+0x1dd/0x1f3 [] submit_bh+0x73/0x1ef [] sync_dirty_buffer+0x8b/0xec [] :jbd:journal_dirty_data+0x17f/0x336 [] :ext3:ext3_journal_dirty_data+0xf/0x34 [] :ext3:walk_page_buffers+0x65/0x8b [] :ext3:ext3_ordered_writepage+0x13f/0x1c3 [] mpage_writepages+0x1c7/0x375 [] do_writepages+0x2c/0x32 [] __writeback_single_inode+0x1ac/0x326 [] sync_sb_inodes+0x1ac/0x26d [] sync_inodes_sb+0x99/0xab [] __sync_inodes+0x5f/0xb1 [] sync_inodes+0x11/0x29 [] do_sync+0x36/0x5a [] sys_sync+0xe/0x12 [] system_call+0x7e/0x83 DWARF2 unwinder stuck at system_call+0x7e/0x83 Leftover inexact backtrace: Assertion failure in submit_bh() at fs/buffer.c:2867: "buffer_mapped(bh)" ----------- [cut here ] --------- [please bite here ] --------- Kernel BUG at fs/buffer.c:2867 invalid opcode: 0000 [1] SMP last sysfs file: /module/libata/version CPU 1 Modules linked in: hidp(U) l2cap(U) bluetooth(U) nfs(U) lockd(U) fscache(U) nfs_acl(U) sunrpc(U) ipv6(U) dm_mirror(U) dm_mod(U) video(U) sbs(U) i2c_ec(U) button(U) battery(U) asus_acpi(U) ac(U) parport_pc(U) lp(U) parport(U) snd_hda_intel(U) snd_hda_codec(U) snd_seq_dummy(U) snd_seq_oss(U) snd_seq_midi_event(U) snd_seq(U) snd_seq_device(U) snd_pcm_oss(U) snd_mixer_oss(U) snd_pcm(U) sr_mod(U) snd_timer(U) snd(U) cdrom(U) intel_rng(U) sg(U) i2c_i801(U) soundcore(U) ohci1394(U) ieee1394(U) i2c_core(U) floppy(U) serio_raw(U) e1000(U) shpchp(U) pcspkr(U) snd_page_alloc(U) sata_sil(U) ahci(U) libata(U) sd_mod(U) scsi_mod(U) raid0(U) ext3(U) jbd(U) ehci_hcd(U) ohci_hcd(U) uhci_hcd(U) Pid: 2529, comm: fsstress Not tainted 2.6.18-fc6 #1 RIP: 0010:[] [] submit_bh+0xa1/0x1ef RSP: 0018:ffff81006aa57bd8 EFLAGS: 00010286 RAX: 000000000000004d RBX: ffff8100536bb038 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffffffff80568ef0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff80648480 R11: 0000000000000000 R12: ffff81007fa87000 R13: ffff810070d29b28 R14: 0000000000000000 R15: 0000000000000000 FS: 00002aaaaaab7eb0(0000) GS:ffff810037e0f9c0(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00002aaaaab49000 CR3: 000000006aa42000 CR4: 00000000000006e0 Process fsstress (pid: 2529, threadinfo ffff81006aa56000, task ffff81007c4de040) Stack: ffff8100536bb038 ffff81000b29cc10 ffff81007fa87000 ffffffff8023abfb 0000000000000282 ffff8100536bb038 ffff81000b29cc10 ffffffff880353c5 0000000000000c00 ffff810070d29b28 ffff8100536bb038 ffff81004f2d30b8 Call Trace: [] sync_dirty_buffer+0x8b/0xec [] :jbd:journal_dirty_data+0x17f/0x336 [] :ext3:ext3_journal_dirty_data+0xf/0x34 [] :ext3:walk_page_buffers+0x65/0x8b [] :ext3:ext3_ordered_writepage+0x13f/0x1c3 [] mpage_writepages+0x1c7/0x375 [] do_writepages+0x2c/0x32 [] __writeback_single_inode+0x1ac/0x326 [] sync_sb_inodes+0x1ac/0x26d [] sync_inodes_sb+0x99/0xab [] __sync_inodes+0x5f/0xb1 [] sync_inodes+0x11/0x29 [] do_sync+0x36/0x5a [] sys_sync+0xe/0x12 [] system_call+0x7e/0x83 DWARF2 unwinder stuck at system_call+0x7e/0x83 Leftover inexact backtrace: Code: 0f 0b 68 7b 71 48 80 c2 33 0b 48 83 7b 38 00 75 08 48 89 df RIP [] submit_bh+0xa1/0x1ef RSP