[Galaxy Note II Q&A, Help & Troubleshooting] bahtsiz_bedevi:
A while ago my note2 started to reboot by itself. I was using the Wifi patch and the old bootloader with MK9

last_kmsg says I was having EXT-fs error

<3>[ 944.513909] c3 As EXT4-fs error, printing data in hex
<3>[ 944.513948] c3 [partition info] s_id : mmcblk0p16, start block# : 8486912
<3>[ 944.513990] c3 dump block# : 1835009, start offset(byte) : 0, length(byte) : 4096
<3>[ 944.514034] c3
-----------------------------------------------------------------------------
I had to remove the dump due to xda's character limit. Full link is here http://pastebin.com/r3UNm9AS
-----------------------------------------------------------------------------
<2>[ 944.530453] c3 EXT4-fs error (device mmcblk0p16): ext4_free_inode:292: comm riotaku.twidere: bit already cleared for inode 459472
<3>[ 944.532158] c3 Aborting journal on device mmcblk0p16-8.
<0>[ 944.533126] c3 Kernel panic - not syncing: EXT4-fs (device mmcblk0p16): panic forced after error
<0>[ 944.533188] c3
<4>[ 944.533207] c3 Backtrace:
<4>[ 944.533256] c3 [<c005d358>] (dump_backtrace+0x0/0x10c) from [<c064ad9c>] (dump_stack+0x18/0x1c)
<4>[ 944.533320] c3 r7:000081b4 r6:c066001c r5:c0adb6f0 r4:c0b95fa0
<4>[ 944.533380] c3 [<c064ad84>] (dump_stack+0x0/0x1c) from [<c064ae1c>] (panic+0x7c/0x1b0)
<4>[ 944.533453] c3 [<c064ada0>] (panic+0x0/0x1b0) from [<c01c9344>] (ext4_handle_error+0x70/0xac)
<4>[ 944.533515] c3 r3:cd834840 r2:00000000 r1:ea09858c r0:c093d2e8
<4>[ 944.533576] c3 [<c01c92d4>] (ext4_handle_error+0x0/0xac) from [<c01c9750>] (__ext4_error+0x88/0x90)
<4>[ 944.533642] c3 r5:00000124 r4:ea098400
<4>[ 944.533689] c3 [<c01c96cc>] (__ext4_error+0x4/0x90) from [<c01ab5f4>] (ext4_free_inode+0x2a8/0x514)
<4>[ 944.533756] c3 r6:e7616030 r5:000702d0 r4:ea098400
<4>[ 944.533810] c3 [<c01ab34c>] (ext4_free_inode+0x0/0x514) from [<c01b3f00>] (ext4_evict_inode+0x29c/0x404)
<4>[ 944.533888] c3 [<c01b3c64>] (ext4_evict_inode+0x0/0x404) from [<c015bb6c>] (evict+0x70/0x168)
<4>[ 944.533949] c3 r7:ea098400 r6:c0660998 r5:e763c0f4 r4:e763c098
<4>[ 944.534010] c3 [<c015bafc>] (evict+0x0/0x168) from [<c015bf80>] (iput+0xcc/0x1a0)
<4>[ 944.534067] c3 r7:ea098400 r6:e763c098 r5:c0660998 r4:e763c0ac
<4>[ 944.534132] c3 [<c015beb4>] (iput+0x0/0x1a0) from [<c0208cc8>] (sdcardfs_evict_inode+0x38/0x3c)
<4>[ 944.534195] c3 r7:eaeca000 r6:c06657ec r5:e762d264 r4:e762d208
<4>[ 944.534256] c3 [<c0208c90>] (sdcardfs_evict_inode+0x0/0x3c) from [<c015bb6c>] (evict+0x70/0x168)
<4>[ 944.534320] c3 r5:e762d264 r4:e762d208
<4>[ 944.534362] c3 [<c015bafc>] (evict+0x0/0x168) from [<c015bf80>] (iput+0xcc/0x1a0)
<4>[ 944.534416] c3 r7:eaeca000 r6:e762d208 r5:c06657ec r4:e762d21c
<4>[ 944.534480] c3 [<c015beb4>] (iput+0x0/0x1a0) from [<c0152108>] (do_unlinkat+0x120/0x164)
<4>[ 944.534538] c3 r7:00000000 r6:e762d208 r5:e75c0ee0 r4:e6d91f14
<4>[ 944.534600] c3 [<c0151fe8>] (do_unlinkat+0x0/0x164) from [<c0152164>] (sys_unlink+0x18/0x1c)
<4>[ 944.534664] c3 r7:0000000a r6:00000000 r5:41d16578 r4:5929def8
<4>[ 944.534728] c3 [<c015214c>] (sys_unlink+0x0/0x1c) from [<c00596a0>] (__sys_trace_return+0x0/0x20)
<2>[ 944.534849] c0 CPU0: stopping
<4>[ 944.534876] c0 Backtrace:
<4>[ 944.534914] c0 [<c005d358>] (dump_backtrace+0x0/0x10c) from [<c064ad9c>] (dump_stack+0x18/0x1c)
<4>[ 944.534971] c0 r7:00000004 r6:00000006 r5:c09e4000 r4:00000000
<4>[ 944.535032] c0 [<c064ad84>] (dump_stack+0x0/0x1c) from [<c0042490>] (do_IPI+0x23c/0x294)
<4>[ 944.535091] c0 [<c0042254>] (do_IPI+0x0/0x294) from [<c0058f40>] (__irq_svc+0x80/0x15c)
<4>[ 944.535142] c0 Exception stack(0xc09e5ee0 to 0xc09e5f28)
<4>[ 944.535184] c0 5ee0: d0942054 00000000 52c8b849 0007e951 c0b93a64 00000000 c313f0a8 c0abf3bc
<4>[ 944.535243] c0 5f00: c313f0b8 c0c6a370 00000000 c09e5f54 52c8b849 c09e5f28 c00c3bc8 c006b614
<4>[ 944.535297] c0 5f20: 80000013 ffffffff
<4>[ 944.535335] c0 [<c006b5d8>] (exynos4_enter_idle+0x0/0x170) from [<c0435f28>] (cpuidle_idle_call+0xd8/0x30c)
<4>[ 944.535397] c0 r7:c0abf3bc r6:c313f0a8 r5:c09e4000 r4:c313f0a8
<4>[ 944.535452] c0 [<c0435e50>] (cpuidle_idle_call+0x0/0x30c) from [<c005a488>] (cpu_idle+0xc4/0x104)
<4>[ 944.535516] c0 [<c005a3c4>] (cpu_idle+0x0/0x104) from [<c063b5ac>] (rest_init+0xa0/0xa4)
<4>[ 944.535569] c0 r7:00000000 r6:c003aef4 r5:00000000 r4:c09e4000
<4>[ 944.535625] c0 [<c063b50c>] (rest_init+0x0/0xa4) from [<c00089dc>] (start_kernel+0x2b4/0x308)
<4>[ 944.535678] c0 r5:00000000 r4:c0ab6e38
<4>[ 944.535715] c0 [<c0008728>] (start_kernel+0x0/0x308) from [<40008040>] (0x40008040)
<6>[ 944.535774] c3 notifier_call_chain : NOTIFY BAD sec_debug_panic_handler
<0>[ 944.535822] c3 Rebooting in 1 seconds..
<0>[ 945.534242] c3 sec_reboot (104, emergency)

FSCK didn't return any error (you cannot unmount mmcblk0p16 under android, you must run this in TWRP's adb shell)

*********************FSCK Check***********************
~ # ‹[6numount /dev/block/mmcblk0p16
umount /dev/block/mmcblk0p16
~ # ‹[6ne2fsck -fv /dev/block/mmcblk0p16
e2fsck -fv /dev/block/mmcblk0p16
e2fsck 1.41.14 (22-Dec-2010)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information

6403 inodes used (0.92%)
291 non-contiguous files (4.5%)
5 non-contiguous directories (0.1%)
# of inodes with ind/dind/tind blocks: 0/0/0
Extent depth histogram: 6357/11
500360 blocks used (17.96%)
0 bad blocks
1 large file

4644 regular files
1723 directories
0 character device files
0 block device files
2 fifos
0 links
16 symbolic links (16 fast symbolic links)
9 sockets
--------
6394 files

I flashed stock 4.1.2 back, no issue so far. Moreover, I think 4.1.2 has better battery life.