When I open the firefox ,later ,the syslogd give this:

[B][U]Feb 15 09:53:31 matrix kernel: [ 3821.128472] Pid: 3267, comm: firefox Tainted: P O 3.4.30-smp #2 Lenovo F31
Feb 15 09:53:31 matrix kernel: [ 3821.128479] EIP: 0060:[<c11d23cb>] EFLAGS: 00210246 CPU: 1
Feb 15 09:53:31 matrix kernel: [ 3821.128482] EIP is at memset+0x10/0x19
Feb 15 09:53:31 matrix kernel: [ 3821.128485] EAX: 00000000 EBX: feb7a170 ECX: 00000e90 EDX: 00000000
Feb 15 09:53:31 matrix kernel: [ 3821.128488] ESI: 00000e90 EDI: feb7a170 EBP: f56d1e18 ESP: f56d1e10
Feb 15 09:53:31 matrix kernel: [ 3821.128490] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Feb 15 09:53:31 matrix kernel: [ 3821.128493] CR0: 80050033 CR2: feb7a170 CR3: 35a68000 CR4: 000007d0
Feb 15 09:53:31 matrix kernel: [ 3821.128496] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
Feb 15 09:53:31 matrix kernel: [ 3821.128498] DR6: ffff0ff0 DR7: 00000400
Feb 15 09:53:31 matrix kernel: [ 3821.128501] Process firefox (pid: 3267, ti=f56d0000 task=f651d540 task.ti=f56d0000)
Feb 15 09:53:31 matrix kernel: [ 3821.128503] Stack:
Feb 15 09:53:31 matrix kernel: [ 3821.128505] 00000170 00001000 f56d1e74 f8405c6f f5b91400 f5b91400 8c02c810 f802c6fd
Feb 15 09:53:31 matrix kernel: [ 3821.128512] f62ce630 00001000 00000000 00000fff 00000000 f74f7f40 db90a088 00001000
Feb 15 09:53:31 matrix kernel: [ 3821.128519] 00000000 00001000 00000000 00000070 00000000 f5377690 db90a088 f5b91400
Feb 15 09:53:31 matrix kernel: [ 3821.128526] Call Trace:
Feb 15 09:53:31 matrix kernel: [ 3821.128539] [<f8405c6f>] ext4_discard_partial_page_buffers+0x44e/0x4a7 [ext4]
Feb 15 09:53:31 matrix kernel: [ 3821.128548] [<f802c6fd>] ? jbd2_journal_start+0x12/0x14 [jbd2]
Feb 15 09:53:31 matrix kernel: [ 3821.128561] [<f842c24c>] ext4_ext_truncate+0xf6/0x1bc [ext4]
Feb 15 09:53:31 matrix kernel: [ 3821.128572] [<f8403deb>] ext4_truncate+0x84/0xac [ext4]
Feb 15 09:53:31 matrix kernel: [ 3821.128582] [<f8406629>] ext4_setattr+0x262/0x4cd [ext4]
Feb 15 09:53:31 matrix kernel: [ 3821.128592] [<f84063c7>] ? ext4_mark_inode_dirty+0x1a8/0x1a8 [ext4]
Feb 15 09:53:31 matrix kernel: [ 3821.128597] [<c1102ad4>] notify_change+0x1a1/0x2e1
Feb 15 09:53:31 matrix kernel: [ 3821.128602] [<c10ebed1>] do_truncate+0x56/0x7e
Feb 15 09:53:31 matrix kernel: [ 3821.128606] [<c10ebfc7>] do_sys_ftruncate+0xce/0x139
Feb 15 09:53:31 matrix kernel: [ 3821.128610] [<c10ec261>] sys_ftruncate64+0x29/0x31
Feb 15 09:53:31 matrix kernel: [ 3821.128615] [<c140f993>] sysenter_do_call+0x12/0x22
Feb 15 09:53:31 matrix kernel: [ 3821.128619] [<c1400000>] ? pci_acpi_scan_root+0xdc/0x29c
Feb 15 09:53:31 matrix kernel: [ 3821.128622] Code: 83 f9 01 72 0b 8a 0e 88 0f 8d b4 26 00 00 00 00 8b 45 d8 83 c4 1c 5b 5e 5f 5d c3 55 89 e5 57 53 66 66 66 66 90 89 c3 89 c7 89 d0 <f3> aa 89 d8 5b 5f 5d c3 90 bb 00 e0 ff ff 21 e3 3b 4b 18 73 51
Feb 15 09:53:31 matrix kernel: [ 3821.128664] EIP: [<c11d23cb>] memset+0x10/0x19 SS:ESP 0068:f56d1e10
Feb 15 09:53:31 matrix kernel: [ 3821.128669] CR2: 00000000feb7a170
Feb 15 09:53:31 matrix kernel: [ 3821.128673] ---[ end trace 2e55a4a6ec463b3a ]---

After this I can not shutdown the system or reboot, but the mouse can move and the root can exec command Why? kernel Panic?

My Linux OS: slackware-13.37
VGA: NVIDIA Corporation G86 [GeForce 8400M GS]
VGA-driver: nvidia-linux-x86-310.32

dose this happen with the current Firefox 19.0
FF15 is 4 versions behind and dose not have the ff19 security and bug fixes

what version of java is installed , and is the java web plugin installed ?
if the old java1.6 or the old UNPATCHED oracle java 1.7
there might be problems
if the UNPATCHED oracle java 1.7 install the patched and updated version ASAP

No, I think this is related to something else ... look at the traceback. It's in the "ext4" filesystem drivers.

My initial guess is that the hard disk drive might be failing, or that there might be corruption in the file system.

I think that it does not have anything, per se, to do with "firefox."