From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.nokia.com ([192.100.122.233] helo=mgw-mx06.nokia.com) by bombadil.infradead.org with esmtps (Exim 4.68 #1 (Red Hat Linux)) id 1LCwKS-00005X-L9 for linux-mtd@lists.infradead.org; Wed, 17 Dec 2008 13:20:45 +0000 Subject: Re: ubifs mount fails at ubifs_unpack_bits+0x120/0x1fc From: Artem Bityutskiy To: Cal Page In-Reply-To: <4948E874.4040206@runbox.com> References: <4948E874.4040206@runbox.com> Content-Type: text/plain; charset=utf-8 Date: Wed, 17 Dec 2008 15:18:13 +0200 Message-Id: <1229519894.17960.31.camel@sauron> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Cc: ubifs Reply-To: dedekind@infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2008-12-17 at 06:54 -0500, Cal Page wrote: > Here's the attach followed by a mount request that fails with > ubifs_unpack_bits+0x120/0x1fc. >=20 > Any ideas? >=20 > Cal Page >=20 > UBI: attaching mtd12 to ubi0 > UBI: physical eraseblock size: 131072 bytes (128 KiB) > UBI: logical eraseblock size: 126976 bytes > UBI: smallest flash I/O unit: 2048 > UBI: sub-page size: 512 > UBI: VID header offset: 2048 (aligned 2048) > UBI: data offset: 4096 > UBI: attached mtd12 to ubi0 > UBI: MTD device name: "nand_part2" > UBI: MTD device size: 512 MiB > UBI: number of good PEBs: 4095 > UBI: number of bad PEBs: 1 > UBI: max. allowed volumes: 128 > UBI: wear-leveling threshold: 4096 > UBI: number of internal volumes: 1 > UBI: number of user volumes: 2 > UBI: available PEBs: 0 > UBI: total number of reserved PEBs: 4095 > UBI: number of PEBs reserved for bad PEB handling: 40 > UBI: max/mean erase counter: 8/4 > UBI: background thread "ubi_bgt0d" started, PID 2077 > UBI device number 0, total 4095 LEBs (519966720 bytes, 495.9 MiB), availa= ble 0 L > EBs (0 bytes), LEB size 126976 bytes (124.0 KiB) > UBIFS: background thread "ubifs_bgt0_1" started, PID 2082 > UBIFS: recovery needed > Unable to handle kernel paging request at virtual address c88d9003 > pgd =3D c5ca4000 > [c88d9003] *pgd=3Da7c18011, *pte=3D00000000, *ppte=3D00000000 > Internal error: Oops: 7 [#1] > Modules linked in: > CPU: 0 > PC is at ubifs_unpack_bits+0x120/0x1fc > LR is at is_a_node+0x3c/0xf0 > pc : [] lr : [] Not tainted > sp : c5c91b18 ip : c5c91b40 fp : c5c91b3c > r10: c5c91b44 r9 : 0000000c r8 : 0000001c > r7 : c5c91b40 r6 : 00000000 r5 : c88d9002 r4 : 00000004 > r3 : 00000000 r2 : 00000004 r1 : c5c91b40 r0 : c5c91b44 > Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment user > Control: 5317F > Table: A5CA4000 DAC: 00000015 > Process mount (pid: 2081, stack limit =3D 0xc5c90250) > Stack: (0xc5c91b18 to 0xc5c92000) > 1b00: c5c1c000 c5c1= c000=20 > 1b20: c88d9000 c88d9002 00000000 00000000 c5c91b68 c5c91b40 c0c73acc c0c6= 96b8=20 > 1b40: 00000000 c88d9002 c60ff620 c5c1c000 0001eee4 c5c90000 0000000c c5c9= 1bb8=20 > 1b60: c5c91b6c c0c73d04 c0c73aa0 0001f000 00000000 00000000 c88d9000 0001= a26b=20 > 1b80: 000003c8 00000000 00000000 00000100 c5c91c24 c5c1c000 c5c1c000 0000= 0000=20 > 1ba0: 00000004 c5c1c3c4 00000120 c5c91bec c5c91bbc c0c75788 c0c73b90 0000= 0120=20 > 1bc0: 00000000 c5c91c24 c65124e4 c5c1c000 00000000 00000004 c5c1c000 0000= 0120=20 > 1be0: c5c91c64 c5c91bf0 c0c5fb9c c0c7571c c60ff83c c0d28a54 00000000 0000= 0000=20 > 1c00: 80000001 c5c1c000 c5b6c2f0 00fa3df8 00000000 c5c91c58 c5c91c24 c0c6= efd8=20 > 1c20: c0c6e018 00000000 00000000 c657a780 000006ba 00013ee0 00000058 0000= 0007=20 > 1c40: c5c90000 c5c1c09c c5c1c000 c5c1c000 c6512400 00000000 c5c91c80 c5c9= 1c68=20 > 1c60: c0c603a8 c0c5fa74 c5c1c338 c0f22240 000000ad c5c91ccc c5c91c84 c0c7= 3284=20 > 1c80: c0c6029c 00000000 00000020 00000000 00000000 000009dd 00000000 c891= c00b=20 > 1ca0: 00000000 c5c1c338 c5c1c338 00000000 00000000 0001f000 00000001 0000= 0000=20 > 1cc0: c5c91d50 c5c91cd0 c0c4f21c c0c72bf4 c5c91d0c c5c91ce0 c5c1c8bc c5c9= 1cfc=20 > 1ce0: 00000020 00000005 c0e43ad8 c6512724 c6512724 00000005 c0ca7188 0000= 0000=20 > 1d00: c5c90020 c6512600 c5c90000 c5cea000 c6512600 c66b1be0 c5c1c37c c5c1= c4c4=20 > 1d20: c5c1c374 00000000 00000000 c6512600 c66b1be0 c6512600 00008000 c5ce= a000=20 > 1d40: c0e98bac c5c91dbc c5c91d54 c0c5114c c0c4e6bc c0beb244 00000000 0000= 0001=20 > 1d60: 00000f2d 1d673000 00000000 c5c89000 00000003 00000000 00000000 0000= 0001=20 > 1d80: 0001f000 00000004 c66aa5dc 0f800002 c5c89006 c7c0caa0 fffffff4 c5c8= 9000=20 > 1da0: c5cea000 c0e98bac c5cea000 c5c86000 c5c91de4 c5c91dc0 c0bd5044 c0c5= 0e74=20 > 1dc0: c7c0caa0 c0e98bac ffffffed c5cea000 c5c89000 00008000 c5c91e00 c5c9= 1de8=20 > 1de0: c0bd592c c0bd4ffc 00000000 00000000 00000000 c5c91f74 c5c91e04 c0be= c880=20 > 1e00: c0bd5904 00000002 c65fc394 c5c91e28 c5c91e1c c0ba4fc8 c0ca69f0 c5c9= 1e60=20 > 1e20: c5c91e2c c0b7592c c0ba4fc8 00000000 c5c91f4c 00000017 ffffffff c0e8= e788=20 > 1e40: 00000017 c5c91f0c 00076000 20000013 40169000 c5c91f08 c5c91e64 c0b7= 5ab0=20 > 1e60: c0b75724 c64d18a0 c5c91ecc c5c91ecc c6071000 c5c91ea8 c5c91e84 c0bd= dc8c=20 > 1e80: c0bdd694 c5c91e90 c6071000 00000001 fffffffe 00000001 c5c91ecc c5c9= 0000=20 > 1ea0: 20000013 c5c90000 c5c91f00 c5c91eb8 c0bb52e4 c0bb4c30 00000044 0000= 0044=20 > 1ec0: 000200d0 00000001 00000000 00000001 c0e948bc c0e948bc 00000000 0007= 5018=20 > 1ee0: 000000d0 c0e948bc ffffffff c5c91f40 00000018 c6b07a14 c7c0c7a0 c5c9= 1f74=20 > 1f00: c5c91f0c c0b6f980 00000001 00000001 00000000 00000000 00076000 0000= 1000=20 > 1f20: 00075018 00000018 c5cea000 c5c91f84 c5c90000 40169000 c5c91f74 0000= 0000=20 > 1f40: c5c91f54 00000000 c0beb080 00000000 c6071000 bec92e6f 00008000 c0b6= ff84=20 > 1f60: c5c90000 40169000 c5c91fa4 c5c91f78 c0bec978 c0bec2c0 c5cea000 c5c8= 9000=20 > 1f80: c5c86000 c5cea000 00075018 bec92ca0 4001d660 00000015 00000000 c5c9= 1fa8=20 > 1fa0: c0b6fde0 c0bec8f8 00075018 bec92ca0 bec92e6f bec92e76 bec92e69 0000= 8000=20 > 1fc0: 00075018 bec92ca0 4001d660 00075018 00008000 00000000 40169000 0000= 0000=20 > 1fe0: 40111e60 bec92bec 00034968 40111e6c 60000010 bec92e6f 00000000 0000= 0000=20 > Backtrace:=20 > [] (ubifs_unpack_bits+0x0/0x1fc) from [] (is_a_node+0= x3c/0xf > 0) > [] (is_a_node+0x0/0xf0) from [] (dbg_check_ltab+0x184= /0x644) > r8 =3D 0000000C r7 =3D C5C90000 r6 =3D 0001EEE4 r5 =3D C5C1C000 > r4 =3D C60FF620=20 > [] (dbg_check_ltab+0x0/0x644) from [] (ubifs_lpt_star= t_commi > t+0x7c/0xabc) > [] (ubifs_lpt_start_commit+0x0/0xabc) from [] (do_com= mit+0x1 > 38/0x828) > [] (do_commit+0x0/0x828) from [] (ubifs_run_commit+0x= 11c/0x1 > 58) > [] (ubifs_run_commit+0x0/0x158) from [] (ubifs_rcvry_= gc_comm > it+0x6a0/0x740) > r6 =3D 000000AD r5 =3D C0F22240 r4 =3D C5C1C338=20 > [] (ubifs_rcvry_gc_commit+0x0/0x740) from [] (ubifs_f= ill_sup > er+0xb70/0x18a0) > [] (ubifs_fill_super+0x0/0x18a0) from [] (ubifs_get_s= b+0x2e8 > /0x364) > [] (ubifs_get_sb+0x0/0x364) from [] (vfs_kern_mount+0= x58/0x9 > 0) > [] (vfs_kern_mount+0x0/0x90) from [] (do_kern_mount+0= x38/0x4 > c) > r8 =3D 00008000 r7 =3D C5C89000 r6 =3D C5CEA000 r5 =3D FFFFFFED > r4 =3D C0E98BAC=20 > [] (do_kern_mount+0x0/0x4c) from [] (do_mount+0x5d0/0= x638) > r6 =3D 00000000 r5 =3D 00000000 r4 =3D 00000000=20 > [] (do_mount+0x0/0x638) from [] (sys_mount+0x90/0xdc) > [] (sys_mount+0x0/0xdc) from [] (ret_fast_syscall+0x0= /0x2c) > r7 =3D 00000015 r6 =3D 4001D660 r5 =3D BEC92CA0 r4 =3D 00075018 > Code: e3130004 1a000000 ebfc28ad e3560000 (e5d5e001)=20 > Segmentation fault Hmm. What is your kernel? What is the last UBIFS commit you have? Could please you put printks to ubifs_unpack_bits() (it is in fs/ubifs/lpt.c) and find out which exactly line of C code causes segfault and why? --=20 Best regards, Artem Bityutskiy (=D0=91=D0=B8=D1=82=D1=8E=D1=86=D0=BA=D0=B8=D0=B9 =D0=90= =D1=80=D1=82=D1=91=D0=BC)