http://bugzilla.kernel.org/show_bug.cgi?id=12371 Summary: oops in ext4_get_group_desc Product: File System Version: 2.5 KernelVersion: 2.6.28 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx ReportedBy: dmaciejak@xxxxxxxxxxxx Latest working kernel version: none Earliest failing kernel version: unknow Distribution: ubuntu Hardware Environment: dell optiplex 740 Software Environment: Problem Description: kernel oops and mount fives me a seg fault when I tried to mount a specially crafted ext4 image (enclosed) Steps to reproduce: *gunzip the image file provided *mount it with the command below mount -t ext4 -o loop ext4.72.img /media/tmp I got this in the kern.log: Jan 6 12:19:40 koma-lab kernel: [ 715.256099] BUG: unable to handle kernel NULL pointer dereference at 00000010 Jan 6 12:19:40 koma-lab kernel: [ 715.256112] IP: [<c023e8b5>] ext4_get_group_desc+0x45/0xd0 Jan 6 12:19:40 koma-lab kernel: [ 715.256128] *pde = 00000000 Jan 6 12:19:40 koma-lab kernel: [ 715.256136] Oops: 0000 [#2] SMP Jan 6 12:19:40 koma-lab kernel: [ 715.256142] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed Jan 6 12:19:40 koma-lab kernel: [ 715.256150] Modules linked in: loop af_packet isofs udf crc_itu_t binfmt_misc ipv6 powernow_k8 cpufreq_userspace cpufreq_stats cpufreq_ondemand freq_table cpufreq_powersave cpufreq_conservative wmi video output container sbs sbshc ac pci_slot battery hid_dell hid_pl hid_cypress hid_gyration hid_bright hid_sony hid_samsung hid_microsoft hid_monterey hid_ezkey hid_apple hid_a4tech hid_logitech usbhid hid_cherry hid_sunplus hid_petalynx hid_belkin hid_chicony hid fuse sg sr_mod cdrom ohci_hcd ehci_hcd tg3 serio_raw k8temp libphy i2c_nforce2 usbcore i2c_core shpchp pci_hotplug button dcdbas sd_mod crc_t10dif ata_generic sata_nv pata_acpi libata evdev thermal processor fan fbcon tileblit font bitblit softcursor Jan 6 12:19:40 koma-lab kernel: [ 715.256242] Jan 6 12:19:40 koma-lab kernel: [ 715.256248] Pid: 4382, comm: mount Tainted: G D (2.6.28 #1) OptiPlex 740 Jan 6 12:19:40 koma-lab kernel: [ 715.256254] EIP: 0060:[<c023e8b5>] EFLAGS: 00210256 CPU: 0 Jan 6 12:19:40 koma-lab kernel: [ 715.256260] EIP is at ext4_get_group_desc+0x45/0xd0 Jan 6 12:19:40 koma-lab kernel: [ 715.256265] EAX: 00000010 EBX: ec658000 ECX: 00000006 EDX: 00000040 Jan 6 12:19:40 koma-lab kernel: [ 715.256270] ESI: 00000000 EDI: 00000000 EBP: ec619d70 ESP: ec619d40 Jan 6 12:19:40 koma-lab kernel: [ 715.256275] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Jan 6 12:19:40 koma-lab kernel: [ 715.256280] Process mount (pid: 4382, ti=ec618000 task=ec64cb60 task.ti=ec618000) Jan 6 12:19:40 koma-lab kernel: [ 715.256284] Stack: Jan 6 12:19:40 koma-lab kernel: [ 715.256287] 00000001 ec430200 0000011b ec430f80 c0552de0 00000040 00000000 f4fcf400 Jan 6 12:19:40 koma-lab kernel: [ 715.256298] 00000000 ec658000 00000000 ec658000 ec619e9c c02505c6 c0496a40 ec658064 Jan 6 12:19:40 koma-lab kernel: [ 715.256311] 00000000 00000000 ec619dd0 00040403 00000000 ffffffff 000007ff ec45a005 Jan 6 12:19:40 koma-lab kernel: [ 715.256323] Call Trace: Jan 6 12:19:40 koma-lab kernel: [ 715.256328] [<c02505c6>] ? ext4_fill_super+0xf66/0x2400 Jan 6 12:19:40 koma-lab kernel: [ 715.256340] [<c03490c0>] ? exact_match+0x0/0x10 Jan 6 12:19:40 koma-lab kernel: [ 715.256350] [<c047db1b>] ? mutex_lock+0xb/0x20 Jan 6 12:19:40 koma-lab kernel: [ 715.256358] [<c035765d>] ? snprintf+0x1d/0x20 Jan 6 12:19:40 koma-lab kernel: [ 715.256365] [<c01ef549>] ? disk_name+0x39/0xc0 Jan 6 12:19:40 koma-lab kernel: [ 715.256372] [<c01aef02>] ? get_sb_bdev+0x112/0x140 Jan 6 12:19:40 koma-lab kernel: [ 715.256382] [<c018d145>] ? kstrdup+0x35/0x60 Jan 6 12:19:40 koma-lab kernel: [ 715.256389] [<c024c771>] ? ext4_get_sb+0x21/0x30 Jan 6 12:19:40 koma-lab kernel: [ 715.256396] [<c024f660>] ? ext4_fill_super+0x0/0x2400 Jan 6 12:19:40 koma-lab kernel: [ 715.256403] [<c01ae3c8>] ? vfs_kern_mount+0x58/0x120 Jan 6 12:19:40 koma-lab kernel: [ 715.256411] [<c01ae4e9>] ? do_kern_mount+0x39/0xd0 Jan 6 12:19:40 koma-lab kernel: [ 715.256418] [<c01c291e>] ? do_mount+0x55e/0x6e0 Jan 6 12:19:40 koma-lab kernel: [ 715.256427] [<c0186015>] ? __get_free_pages+0x25/0x30 Jan 6 12:19:40 koma-lab kernel: [ 715.256436] [<c01c0485>] ? copy_mount_options+0x35/0x140 Jan 6 12:19:40 koma-lab kernel: [ 715.256443] [<c01c2b0f>] ? sys_mount+0x6f/0xb0 Jan 6 12:19:40 koma-lab kernel: [ 715.256449] [<c0103e0b>] ? sysenter_do_call+0x12/0x2f Jan 6 12:19:40 koma-lab kernel: [ 715.256457] Code: 01 00 00 8b 47 1c 39 d0 76 4e 0f ae e8 66 90 8b 55 ec 89 f0 8b 9a a0 01 00 00 8b 4b 58 d3 e8 89 45 f0 8b 47 38 8b 7d f0 8b 53 18 <8b> 0c b8 83 ea 01 21 f2 85 c9 74 48 89 d0 0f af 03 8b 5d e8 03 Jan 6 12:19:40 koma-lab kernel: [ 715.256518] EIP: [<c023e8b5>] ext4_get_group_desc+0x45/0xd0 SS:ESP 0068:ec619d40 Jan 6 12:19:40 koma-lab kernel: [ 715.256528] ---[ end trace b76702c8f157530e ]--- -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
