Eu vi traços de chamada semelhantes com o 3.16.5 depois de voltar do modo de hibernação. Eu mudei para ext4 e não vi problemas com isso.
Minha configuração usou o xfs roofs e a troca de arquivos (não a partição swap). Suspender e hibernar funcionou bem e retomar funciona ok para ambos, exceto para alguns traços de chamada do hibernate.
O sistema é semi-utilizável até que as operações de arquivo moderadas sejam iniciadas. O teste decisivo é executar:
# tail -f /var/log/messages
e depois hibernar.
Depois de retomar o sistema não é responsivo. Com ext4 não vejo nenhum traço de chamada e o sistema parece ok.
Eu suspeitei de alguns problemas com o xfs quando vi isso:
Dec 20 23:57:58 localhost kernel: [ 9053.841446] general protection fault: 0000 [#2] SMP
Dec 20 23:57:58 localhost kernel: [ 9053.841514] Modules linked in: vboxnetadp(O) vboxnetflt(O) vboxdrv(O) x86_pkg_temp_thermal
Dec 20 23:57:58 localhost kernel: [ 9053.841618] CPU: 1 PID: 13937 Comm: mozStorage #10 Tainted: G D O 3.16.5-gentoo #22
Dec 20 23:57:58 localhost kernel: [ 9053.841702] Hardware name: ASUSTeK COMPUTER INC. G56JK/G56JK, BIOS G56JK.201 05/13/2014
Dec 20 23:57:58 localhost kernel: [ 9053.841782] task: ffff8800c5658880 ti: ffff88011262c000 task.ti: ffff88011262c000
Dec 20 23:57:58 localhost kernel: [ 9053.841854] RIP: 0010:[<ffffffff8113ae68>] [<ffffffff8113ae68>] kmem_cache_alloc+0x58/0x130
Dec 20 23:57:58 localhost kernel: [ 9053.841947] RSP: 0018:ffff88011262fb60 EFLAGS: 00010282
Dec 20 23:57:58 localhost kernel: [ 9053.842000] RAX: 0000000000000000 RBX: ffffea00021c47c0 RCX: 0000000000180d5c
Dec 20 23:57:58 localhost kernel: [ 9053.842069] RDX: 0000000000180d5b RSI: 0000000000008050 RDI: ffff88012a44ca00
Dec 20 23:57:58 localhost kernel: [ 9053.842138] RBP: ffff88011262fb90 R08: 0000000000016300 R09: ffffea00021c4800
Dec 20 23:57:58 localhost kernel: [ 9053.842208] R10: 0000000000000a95 R11: 0000000000000000 R12: 00f7000000f60000
Dec 20 23:57:58 localhost kernel: [ 9053.842277] R13: 0000000000008050 R14: ffff88012a44ca00 R15: ffffffff81171e4c
Dec 20 23:57:58 localhost kernel: [ 9053.842348] FS: 00007f083e0fc700(0000) GS:ffff88012ee40000(0000) knlGS:0000000000000000
Dec 20 23:57:58 localhost kernel: [ 9053.842427] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 20 23:57:58 localhost kernel: [ 9053.842484] CR2: 00007f08403780e3 CR3: 000000011dc39000 CR4: 00000000001407e0
Dec 20 23:57:58 localhost kernel: [ 9053.842553] Stack:
Dec 20 23:57:58 localhost kernel: [ 9053.842576] 0000000000000483 ffffea00021c47c0 0000000000000000 0000000000001000
Dec 20 23:57:58 localhost kernel: [ 9053.842661] ffffea00021c47c0 0000000000000000 ffff88011262fba8 ffffffff81171e4c
Dec 20 23:57:58 localhost kernel: [ 9053.842745] ffff88011262fbd8 ffff88011262fbe8 ffffffff81172102 0000000100000000
Dec 20 23:57:58 localhost kernel: [ 9053.842829] Call Trace:
Dec 20 23:57:58 localhost kernel: [ 9053.842867] [<ffffffff81171e4c>] alloc_buffer_head+0x1c/0x60
Dec 20 23:57:58 localhost kernel: [ 9053.842926] [<ffffffff81172102>] alloc_page_buffers+0x32/0xb0
Dec 20 23:57:58 localhost kernel: [ 9053.842987] [<ffffffff81173179>] create_empty_buffers+0x19/0xc0
Dec 20 23:57:58 localhost kernel: [ 9053.843048] [<ffffffff81173267>] create_page_buffers+0x47/0x50
Dec 20 23:57:58 localhost kernel: [ 9053.843108] [<ffffffff811742c8>] __block_write_begin+0x68/0x430
Dec 20 23:57:58 localhost kernel: [ 9053.846472] [<ffffffff811009d9>] ? lru_cache_add+0x9/0x10
Dec 20 23:57:58 localhost kernel: [ 9053.849840] [<ffffffff810f39f8>] ? add_to_page_cache_lru+0x48/0x70
Dec 20 23:57:58 localhost kernel: [ 9053.852926] [<ffffffff811eeef0>] ? __xfs_get_blocks+0x4f0/0x4f0
Dec 20 23:57:58 localhost kernel: [ 9053.855809] [<ffffffff810f3ca5>] ? pagecache_get_page+0x95/0x1e0
Dec 20 23:57:58 localhost kernel: [ 9053.858662] [<ffffffff811edbec>] xfs_vm_write_begin+0x4c/0xe0
Dec 20 23:57:58 localhost kernel: [ 9053.861460] [<ffffffff8114cb61>] ? terminate_walk+0x41/0x50
Dec 20 23:57:58 localhost kernel: [ 9053.863974] [<ffffffff810f351d>] generic_perform_write+0xbd/0x1b0
Dec 20 23:57:58 localhost kernel: [ 9053.866483] [<ffffffff811fa3e0>] xfs_file_buffered_aio_write.isra.9+0x100/0x1b0
Dec 20 23:57:58 localhost kernel: [ 9053.869005] [<ffffffff811fa50e>] xfs_file_write_iter+0x7e/0x120
Dec 20 23:57:58 localhost kernel: [ 9053.871518] [<ffffffff81142bcc>] new_sync_write+0x7c/0xb0
Dec 20 23:57:58 localhost kernel: [ 9053.874024] [<ffffffff81143322>] vfs_write+0xb2/0x1f0
Dec 20 23:57:58 localhost kernel: [ 9053.876520] [<ffffffff81143e71>] SyS_write+0x41/0xb0
Dec 20 23:57:58 localhost kernel: [ 9053.878980] [<ffffffff81142e43>] ? SyS_lseek+0x43/0xb0
Dec 20 23:57:58 localhost kernel: [ 9053.881405] [<ffffffff81783e92>] system_call_fastpath+0x16/0x1b
Dec 20 23:57:58 localhost kernel: [ 9053.883610] Code: 8b 06 65 4c 03 04 25 a8 cd 00 00 49 8b 50 08 4d 8b 20 49 8b 40 10 4d 85 e4 74 68 48 85 c0 74 63 49 63 46 20 48 8d 4a 01 4d 8b 06 <49> 8b 1c 04 4c 89 e0 65 49 0f c7 08 0f 94 c0 84 c0 74 c1 49 63
Dec 20 23:57:58 localhost kernel: [ 9053.886116] RIP [<ffffffff8113ae68>] kmem_cache_alloc+0x58/0x130
Dec 20 23:57:58 localhost kernel: [ 9053.888473] RSP <ffff88011262fb60>
Dec 20 23:57:58 localhost kernel: [ 9053.907290] ---[ end trace a68ba9204a0e3b64 ]---
Estes, por outro lado, foram vistos com mais frequência:
Dec 21 13:38:12 localhost kernel: [ 3276.619889] general protection fault: 0000 [#1] SMP
Dec 21 13:38:12 localhost kernel: [ 3276.619914] Modules linked in: vboxnetadp(O) vboxnetflt(O) vboxdrv(O) x86_pkg_temp_thermal
Dec 21 13:38:12 localhost kernel: [ 3276.619948] CPU: 6 PID: 10285 Comm: udevadm Tainted: G O 3.16.5-gentoo #22
Dec 21 13:38:12 localhost kernel: [ 3276.619973] Hardware name: ASUSTeK COMPUTER INC. G56JK/G56JK, BIOS G56JK.201 05/13/2014
Dec 21 13:38:12 localhost kernel: [ 3276.619999] task: ffff8801292e2a80 ti: ffff8800c3754000 task.ti: ffff8800c3754000
Dec 21 13:38:12 localhost kernel: [ 3276.620023] RIP: 0010:[<ffffffff8115a6d8>] [<ffffffff8115a6d8>] __d_lookup_rcu+0x78/0x160
Dec 21 13:38:12 localhost kernel: [ 3276.620054] RSP: 0018:ffff8800c3757c68 EFLAGS: 00010206
Dec 21 13:38:12 localhost kernel: [ 3276.620071] RAX: 0000000000000004 RBX: 006b0000006a0000 RCX: 000000000000000d
Dec 21 13:38:12 localhost kernel: [ 3276.620094] RDX: 0000000000690000 RSI: ffff8800c3757e60 RDI: ffff88012a0be540
Dec 21 13:38:12 localhost kernel: [ 3276.620116] RBP: ffff8800c3757ca8 R08: ffff8800c3757dec R09: ffff8800c3757ccc
Dec 21 13:38:12 localhost kernel: [ 3276.620138] R10: ffff880129a0202f R11: 0000000000000004 R12: ffff88012a0be540
Dec 21 13:38:12 localhost kernel: [ 3276.620160] R13: 006b00000069fff8 R14: 00000004d16f3f17 R15: ffff8800c3757e60
Dec 21 13:38:12 localhost kernel: [ 3276.620183] FS: 00007f50c54097c0(0000) GS:ffff88012ef80000(0000) knlGS:0000000000000000
Dec 21 13:38:12 localhost kernel: [ 3276.620208] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 21 13:38:12 localhost kernel: [ 3276.620226] CR2: 00007fff115e7e10 CR3: 000000009655d000 CR4: 00000000001407e0
Dec 21 13:38:12 localhost kernel: [ 3276.620248] Stack:
Dec 21 13:38:12 localhost kernel: [ 3276.620255] 000280d00000ffff 0000000000000001 0000000000000246 ffff8800c3757df8
Dec 21 13:38:12 localhost kernel: [ 3276.620282] ffff8800c3757d70 ffff8800c3757df8 ffff8800c3757e50 ffff88012a0be540
Dec 21 13:38:12 localhost kernel: [ 3276.620309] ffff8800c3757cf8 ffffffff8114cbdf ffff8801292e2a80 ffff8800c4bca020
Dec 21 13:38:12 localhost kernel: [ 3276.620336] Call Trace:
Dec 21 13:38:12 localhost kernel: [ 3276.620348] [<ffffffff8114cbdf>] lookup_fast+0x3f/0x2c0
Dec 21 13:38:12 localhost kernel: [ 3276.620367] [<ffffffff81150e02>] do_last+0xa2/0x1130
Dec 21 13:38:12 localhost kernel: [ 3276.620385] [<ffffffff8114dc89>] ? link_path_walk+0x69/0x890
Dec 21 13:38:12 localhost kernel: [ 3276.620405] [<ffffffff81151f46>] path_openat+0xb6/0x630
Dec 21 13:38:12 localhost kernel: [ 3276.620423] [<ffffffff81152c25>] do_filp_open+0x35/0x80
Dec 21 13:38:12 localhost kernel: [ 3276.620442] [<ffffffff8115ea0d>] ? __alloc_fd+0x7d/0x120
Dec 21 13:38:12 localhost kernel: [ 3276.620460] [<ffffffff81142513>] do_sys_open+0x123/0x220
Dec 21 13:38:12 localhost kernel: [ 3276.620479] [<ffffffff81142629>] SyS_open+0x19/0x20
Dec 21 13:38:12 localhost kernel: [ 3276.620497] [<ffffffff81783e92>] system_call_fastpath+0x16/0x1b
Dec 21 13:38:12 localhost kernel: [ 3276.620516] Code: 83 e3 fe 0f 84 b2 00 00 00 4c 89 f0 48 c1 e8 20 49 89 c3 eb 12 66 0f 1f 44 00 00 48 8b 1b 48 85 db 0f 84 94 00 00 00 4c 8d 6b f8 <8b> 53 fc 4c 39 63 10 75 e7 48 83 7b 08 00 74 e0 83 e2 fe 41 f6
Dec 21 13:38:12 localhost kernel: [ 3276.620635] RIP [<ffffffff8115a6d8>] __d_lookup_rcu+0x78/0x160
Dec 21 13:38:12 localhost kernel: [ 3276.620656] RSP <ffff8800c3757c68>
Dec 21 13:38:12 localhost kernel: [ 3276.627506] ---[ end trace 74da4d08df847136 ]---