Hi,
I am working on ARMv7 dual-core board with android (ICS + kernel 3.4.9).
I am randomly facing a kernel oops in fs/jbd2/journal.c: In the function
jbd2_journal_get_descriptor_buffer, memset is called without checking
bh->b_data which is NULL in my case.
It seems to be a problem with the journal device block.
It seems that the current memory zone is high memory zone, so the
current buffer head referred to the used page is not correctly set
(b_data is NULL).
I could not find why the buffer cache tries to allocate and use a block
in high memory zone.
Any ideas, or tips/tricks for debugging ?
Regards,
Clement Gallin-Douathe
Texas Instruments (France)
Environment description :
- kernel :
version 3.4.9
CONFIG_HIGHMEM enabled
CONFIG_HIGHPTE is not set
- memory :
POP LPDDR2, 8Gb (256Mx32) + 8Gb (256Mx32), 1066Mbps (Samsung
K3PE0E00B-XGC2)
eMMC, 32GByte, V4.5 Features, 80MBps Read (Sandisk SDIN5C4-32G)
EEROM, 1Mb (256Kx8), I2C (System Configuration Info)
Backtrace :
[ 337.047882] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 337.056823] pgd = c0004000
[ 337.059661] [00000000] *pgd=00000000
[ 337.063415] Internal error: Oops: 817 [#1] PREEMPT SMP ARM
[ 337.069213] Modules linked in: hsi_omap caif_hsi gps_drv wl18xx(O)
wl12xx(O) wlcore(O) mac80211(O) pvrsrvkm_sgx544_105(O) cfg80211(O)
compat(O) btwilink(O) bnep(O) hidp(O) rfcomm(O) bluetooth(O) [last
unloaded: hsi_char]
[ 337.089813] CPU: 0 Tainted: G W O (3.4.9 #1)
[ 337.095397] PC is at __memzero+0x24/0x80
[ 337.099487] LR is at 0x0
[ 337.102142] pc : [<c023b2a4>] lr : [<00000000>] psr: 20000013
[ 337.102142] sp : d2781e24 ip : 00000000 fp : d2781e4c
[ 337.114166] r10: c01c032c r9 : d2780000 r8 : 00000000
[ 337.119628] r7 : d2721c00 r6 : d2afae88 r5 : d1d74f88 r4 : d2721c00
[ 337.126464] r3 : 00000000 r2 : 00000000 r1 : 00000fc0 r0 : 00000000
[ 337.133300] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM
Segment kernel
[ 337.140960] Control: 10c5387d Table: 824d006a DAC: 00000015
[ 337.146972]
[ 337.147003] PC: 0xc023b224:
[ 337.151458] b224 e3120004 14801004 e3120002 14c01001 14c01001
e3120001 14c01001 e1a0f00e
[ 337.160095] b244 e320f000 e320f000 e320f000 e320f000 e320f000
e320f000 e320f000 00000000
[ 337.168731] b264 e2511004 ba00001d e3530002 b4c02001 d4c02001
e4c02001 e0811003 e3a02000
[ 337.177337] b284 e2103003 1afffff5 e3510010 ba00000f e52de004
e1a0c002 e1a0e002 e2511040
[ 337.185974] b2a4 a8a0500c a8a0500c a8a0500c a8a0500c cafffff9
08bd8000 e3110020 18a0500c
[ 337.194610] b2c4 18a0500c e3110010 18a0500c e49de004 e3110008
18a0000c e3110004 14802004
[ 337.203247] b2e4 e3110002 14c02001 14c02001 e3110001 14c02001
e1a0f00e e320f000 e0010192
[ 337.211853] b304 e0211390 e1a0c820 e1a03822 e1c0080c e1c22803
e0211c93 e0030390 e0000092
[ 337.220489]
[ 337.220489] SP: 0xd2781da4:
[ 337.224945] 1da4 00000000 d29c3910 00000000 d2781e24 d2781dc0
c023b2a4 20000013 ffffffff
[ 337.233581] 1dc4 d2781e0c d2781e4c d2781dd8 c05ff9d8 c00083f0
00000000 00000fc0 00000000
[ 337.242218] 1de4 00000000 d2721c00 d1d74f88 d2afae88 d2721c00
00000000 d2780000 c01c032c
[ 337.250854] 1e04 d2781e4c 00000000 d2781e24 00000000 c023b2a4
20000013 ffffffff c01c6af8
[ 337.259460] 1e24 c01c6b48 00001000 d2721e20 000006e7 00000000
d2780000 d2721e20 d2781f64
[ 337.268096] 1e44 d2781e50 c01bf648 c01c6ac0 00000000 00000000
d259c01c d2769a00 c2038bc0
[ 337.276702] 1e64 d2721e20 d2af96b4 00000018 78962df3 0000004e
d2721e3c 98393bc0 d2722000
[ 337.285339] 1e84 00000008 00000000 d2af96e0 00000000 d2721c14
ffffffff 00000000 00000000
[ 337.293975]
[ 337.293975] FP: 0xd2781dcc:
[ 337.298461] 1dcc d2781dd8 c05ff9d8 c00083f0 00000000 00000fc0
00000000 00000000 d2721c00
[ 337.307067] 1dec d1d74f88 d2afae88 d2721c00 00000000 d2780000
c01c032c d2781e4c 00000000
[ 337.315704] 1e0c d2781e24 00000000 c023b2a4 20000013 ffffffff
c01c6af8 c01c6b48 00001000
[ 337.324340] 1e2c d2721e20 000006e7 00000000 d2780000 d2721e20
d2781f64 d2781e50 c01bf648
[ 337.332946] 1e4c c01c6ac0 00000000 00000000 d259c01c d2769a00
c2038bc0 d2721e20 d2af96b4
[ 337.341583] 1e6c 00000018 78962df3 0000004e d2721e3c 98393bc0
d2722000 00000008 00000000
[ 337.350219] 1e8c d2af96e0 00000000 d2721c14 ffffffff 00000000
00000000 00000000 d2721c00
[ 337.358856] 1eac d2af9680 78962df3 0000004e c0895bc0 c0895bc0
c0895bc0 c0895bc0 79547f18
[ 337.367462]
[ 337.367462] R4: 0xd2721b80:
[ 337.371948] 1b80 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.380584] 1ba0 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.389190] 1bc0 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.397827] 1be0 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.406463] 1c00 00000030 00000000 d29c9c48 c20c4000 00000002
00000000 00000000 00000000
[ 337.415100] 1c20 00000001 00000000 00000000 d2721c2c d2721c2c
00000000 00000000 d2af9680
[ 337.423736] 1c40 d1d78780 00000000 00000000 d2721c4c d2721c4c
00000000 00000000 d2721c5c
[ 337.432342] 1c60 d2721c5c 00000000 00000000 d1bf9de0 d1bf9de0
00000000 00000000 d2721c7c
[ 337.440979]
[ 337.440979] R5: 0xd1d74f08:
[ 337.445465] 4f08 00000029 00000000 c12a9560 00000000 000006e2
00000000 00001000 d402b000
[ 337.454101] 4f28 d29c3880 c01c032c 00000000 d1d74f34 d1d74f34
00000000 00000000 00000000
[ 337.462707] 4f48 00000029 00000000 c1049040 00000000 000006e1
00000000 00001000 c1002000
[ 337.471343] 4f68 d29c3880 c01c032c 00000000 d1d74f74 d1d74f74
00000000 00000000 00000000
[ 337.479980] 4f88 00000024 d1d74f88 c1c5de00 00000000 000006e7
00000000 00001000 00000000
[ 337.488616] 4fa8 d29c3880 00000000 00000000 d1d74fb4 d1d74fb4
00000000 00000002 00000000
[ 337.497222] 4fc8 a1615e1e a19e5e61 a1615e1e a19ede61 a1615e9e
a19e5e61 a1615e9e a19e5e61
[ 337.505859] 4fe8 a1615e9e a19e5e61 a1615e9e a1965e61 a1615e9e
a19e5e61 d2fe8840 d2fe8840
[ 337.514495]
[ 337.514495] R6: 0xd2afae08:
[ 337.518981] ae08 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.527587] ae28 00000000 d1cb4988 d2afa208 00000000 00000000
00000000 00000000 00000000
[ 337.536224] ae48 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.544860] ae68 00000000 d2afa6c8 d2afa6c8 00000000 00000000
00000000 00000000 00000000
[ 337.553497] ae88 d2af48c8 00000002 00000001 00000001 00000000
00000000 00000000 d2af9680
[ 337.562103] aea8 00000000 d2afae88 d2afae88 d1d62080 d2afae88
d2afae88 00000000 00000000
[ 337.570739] aec8 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.579376] aee8 00000000 d2afaa48 d2afa248 00000000 00000000
00000000 00000000 00000000
[ 337.588012]
[ 337.588012] R7: 0xd2721b80:
[ 337.592468] 1b80 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.601104] 1ba0 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.609741] 1bc0 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.618377] 1be0 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.626983] 1c00 00000030 00000000 d29c9c48 c20c4000 00000002
00000000 00000000 00000000
[ 337.635620] 1c20 00000001 00000000 00000000 d2721c2c d2721c2c
00000000 00000000 d2af9680
[ 337.644256] 1c40 d1d78780 00000000 00000000 d2721c4c d2721c4c
00000000 00000000 d2721c5c
[ 337.652893] 1c60 d2721c5c 00000000 00000000 d1bf9de0 d1bf9de0
00000000 00000000 d2721c7c
[ 337.661499]
[ 337.661529] R9: 0xd277ff80:
[ 337.665985] ff80 d26be140 d26be188 c005f2b8 d2c31c90 d277ffc4
d26be140 c005f2b8 00000000
[ 337.674621] ffa0 00000000 00000000 d277fff4 d277ffb8 c0064278
c005f2c4 00000000 00000000
[ 337.683258] ffc0 d26be140 00000000 00000000 00000000 d277ffd0
d277ffd0 d2c31c90 c00641e4
[ 337.691864] ffe0 c0047d54 00000013 00000000 d277fff8 c0047d54
c00641f0 d7cb2834 173428cb
[ 337.700500] 0000 00000000 00000002 00000000 d2769a00 c08f3b40
00000000 00000015 d2769a00
[ 337.709136] 0020 c2461040 c2038bc0 d2780000 c2461ac0 00000000
c08bed50 d2781b34 d2781a70
[ 337.717773] 0040 c05fde8c 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.726409] 0060 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 337.735046]
[ 337.735046] R10: 0xc01c02ac:
[ 337.739593] 02ac e2433001 e5843004 e5943000 e3130002 0afffe4f
eb10f82e eafffe4d e7f001f2
[ 337.748229] 02cc eafffffe e1a00007 ebfc800b e3500000 1afffe1b
eafffe13 e7f001f2 eafffffe
[ 337.756866] 02ec e51be0bc e51f0b68 e28e1e1e eb10ef7e e51b00bc
e5903000 e3130040 0afffb98
[ 337.765502] 030c e1a01008 eb00159d eafffb95 e1a00005 eb10fbb8
eafffb92 e7f001f2 eafffffe
[ 337.774108] 032c e1a0c00d e92dd830 e24cb004 e3510000 e1a04000
1a000005 e1a00001 e1a01004
[ 337.782745] 034c eb01e27c e1a00004 ebfe0129 e89da830 e3a00000
e1a01004 eb01ec05 e1a00004
[ 337.791381] 036c ebfe0123 e89da830 e1a0c00d e92dd830 e24cb004
e1a05001 e59041d4 eb000901
[ 337.800018] 038c e3a01000 e595301c e0635000 e283300c e0832005
e1a0c003 e1540002 e0833000
[ 337.808654] Process jbd2/mmcblk0p10 (pid: 89, stack limit = 0xd27802f8)
[ 337.815582] Stack: (0xd2781e24 to 0xd2782000)
[ 337.820129] 1e20: c01c6b48 00001000 d2721e20 000006e7
00000000 d2780000 d2721e20
[ 337.828704] 1e40: d2781f64 d2781e50 c01bf648 c01c6ac0 00000000
00000000 d259c01c d2769a00
[ 337.837280] 1e60: c2038bc0 d2721e20 d2af96b4 00000018 78962df3
0000004e d2721e3c 98393bc0
[ 337.845855] 1e80: d2722000 00000008 00000000 d2af96e0 00000000
d2721c14 ffffffff 00000000
[ 337.854400] 1ea0: 00000000 00000000 d2721c00 d2af9680 78962df3
0000004e c0895bc0 c0895bc0
[ 337.862976] 1ec0: c0895bc0 c0895bc0 79547f18 0000004e 00000049
c089342c 00007735 00000000
[ 337.871551] 1ee0: 00000001 d2721e58 00000000 00000000 00000000
00000000 00001283 d2781f08
[ 337.880126] 1f00: 00000001 00000000 91827364 d2781f0c d2781f0c
d2781f14 d2781f14 00000000
[ 337.888671] 1f20: c00524c0 c05ff1c0 d2781f44 a0000013 00000000
d2721c14 d2721e58 d2721c00
[ 337.897247] 1f40: d2721c14 d2721e58 d2780000 d2721c64 d2781f74
c0951bd8 d2781fb4 d2781f68
[ 337.905822] 1f60: c01c60a4 c01bea30 d2c31cac d2721c84 d2781f8c
00000000 d2769a00 c0064784
[ 337.914398] 1f80: d2781f80 d2781f80 c01c5fec d2c31c98 d2781fc4
d2721c00 c01c5fec 00000000
[ 337.922943] 1fa0: 00000000 00000000 d2781ff4 d2781fb8 c0064278
c01c5ff8 00000000 00000000
[ 337.931518] 1fc0: d2721c00 00000000 00000000 00000000 d2781fd0
d2781fd0 d2c31c98 c00641e4
[ 337.940093] 1fe0: c0047d54 00000013 00000000 d2781ff8 c0047d54
c00641f0 ca693596 ca963569
[ 337.948638] Backtrace:
[ 337.951202] [<c01c6ab4>]
(jbd2_journal_get_descriptor_buffer+0x0/0xa4) from [<c01bf648>]
(jbd2_journal_commit_transaction+0xc24/0x1908)
[ 337.963958] r5:d2721e20 r4:d2780000
[ 337.967712] [<c01bea24>] (jbd2_journal_commit_transaction+0x0/0x1908)
from [<c01c60a4>] (kjournald2+0xb8/0x254)
[ 337.978302] [<c01c5fec>] (kjournald2+0x0/0x254) from [<c0064278>]
(kthread+0x94/0xa0)
[ 337.986511] [<c00641e4>] (kthread+0x0/0xa0) from [<c0047d54>]
(do_exit+0x0/0x810)
[ 337.994354] r7:00000013 r6:c0047d54 r5:c00641e4 r4:d2c31c98
[ 338.000305] Code: e52de004 e1a0c002 e1a0e002 e2511040 (a8a0500c)
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