From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from srv1.bluewind.it ([216.38.51.188]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UwTCL-0001jm-76 for linux-mtd@lists.infradead.org; Tue, 09 Jul 2013 08:22:58 +0000 Received: from smtp.bluewind.it ([80.86.152.212]:46281 helo=[192.168.0.42]) by srv1.bluewind.it with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.80.1) (envelope-from ) id 1UwTBz-0002NJ-UW for linux-mtd@lists.infradead.org; Tue, 09 Jul 2013 10:22:36 +0200 Message-ID: <51DBC864.6060505@bluewind.it> Date: Tue, 09 Jul 2013 10:23:00 +0200 From: enrico benetti MIME-Version: 1.0 To: linux-mtd@lists.infradead.org Subject: Re: UBI leb_write_unlock NULL pointer Oops References: <1372662331.22014.27.camel@sauron.fi.intel.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , > I have yet to reproduce the oops', but the two patches submitted by > Atrem look like them may correct the issue. I'll apply the patches > and try to reproduce the issue again. > Hi Brent, I'm working on a back-ported 2.6.35.3 tree for a NOR based system ( 00AM29EWH). I already merged 605c912bb843c024b1ed173dc427cd5c08e5d54d UBIFS: fix a horrid bug 33f1a63ae84dfd9ad298cf275b8f1887043ced36 UBIFS: prepare to fix a horrid bug but rarely I fall into this oops on NULL pointer, so they don't seem to fix the issue. I'm going to run again integck test with ubi debug messages active. Trace follows below: integck: write 152 bytes, offset 251, file 2694 (line 903) integck: write 2 bytes, offset 10225, file 632263 (line 903) integck: write 1 bytes, offset 0, file kdubxbrrfdtmjdhbqlhkpzguwvcmdjaprvibhjcvpfmkylppqaxnkocxjbxqssmxcnsdmsfbxesrssgtzkejenoccxgqusrov ngonlypkcejuqxiyjzxbsykagidcfmckgpfzcvvfwkiawgizuarwvlfcibwtefadewrhzthaazwzylqjnauhmlavxhqmpmxdbhriyknugufzowqbutprulmyzsckvnscixdlejbf ftfloltumrmoayncb (line 903) integck: write 30564 bytes, offset 6132, file 538228 (line 903) integck: write 1 bytes, offset 30284, file 538228 (line 903) integck: write 42 bytes, offset 36734, file 433076 (line 903) [ 300.554525] Unable to handle kernel NULL pointer dereference at virtual address 0000000c [ 300.562641] pgd = 8d408000 [ 300.565353] [0000000c] *pgd=9d46b031, *pte=00000000, *ppte=00000000 [ 300.571672] Internal error: Oops: 17 [#1] PREEMPT [ 300.576383] last sysfs file: /sys/devices/virtual/ubi/ubi0/min_io_size [ 300.582919] Modules linked in: [ 300.585996] CPU: 0 Not tainted (2.6.35.3-998-ga1cd8a7-v3.8-gabc6f42 #15) [ 300.593080] PC is at __up_write+0x40/0x188 [ 300.597192] LR is at leb_write_unlock+0xa0/0xf4 [ 300.601733] pc : [<801fb698>] lr : [<80283e08>] psr: 00000093 [ 300.601741] sp : 8d3a9ad0 ip : 8d3a9af8 fp : 00000012 [ 300.613236] r10: 00013d08 r9 : 00000080 r8 : 60000013 [ 300.618470] r7 : 8d3fb29c r6 : 00000000 r5 : 8d3fb298 r4 : 8d3fb280 [ 300.625006] r3 : 8d3a8000 r2 : 00000000 r1 : 00000000 r0 : 8d3fb298 [ 300.631547] Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 300.638780] Control: 10c5387d Table: 9d408019 DAC: 00000015 [ 300.644535] Process integck (pid: 1243, stack limit = 0x8d3a82e8) [ 300.650638] Stack: (0x8d3a9ad0 to 0x8d3aa000) [ 300.655006] 9ac0: 8d3fb298 8d3fb280 8d31f000 00000000 [ 300.663201] 9ae0: 0000000b 00000000 00000080 00013d08 00000012 80283e08 8d31f000 8d343c00 [ 300.671395] 9b00: 00000000 802850e0 000002f8 00000021 00000000 80057180 0000001f 8002a070 [ 300.679591] 9b20: ffffffff 8e800000 8d343c00 8002aa8c 8b5cf000 8b9024b1 8b5cf125 8d434000 [ 300.687786] 9b40: ffccd581 8b5cf000 000008cd 8ea62000 000000bd 000002f8 8d343c00 00013d08 [ 300.695981] 9b60: 8d31f000 0000000b 8d43f080 00000000 8d434000 80282c34 00013d08 000002f8 [ 300.704176] 9b80: 8b5d0000 00005789 00000057 000000bb 8d434030 8d434000 8d440000 00013d08 [ 300.712371] 9ba0: 0000000b 000002f8 8d434000 00000108 00013d08 801a4bd4 000002f8 0000000b [ 300.720566] 9bc0: 8d434000 00013d08 8d400520 8d440000 00001030 8d400520 00001030 801a5308 [ 300.728761] 9be0: 000002f8 8d400544 00000000 00000000 8d434000 00001030 00000000 0004a6f6 [ 300.736955] 9c00: 8d440000 0000000b 00000000 8d434000 8d440000 8d3a9cc0 8d400520 00001030 [ 300.745150] 9c20: 0000000b 00000001 00013d08 80198984 8d3a9c74 00000108 00000012 00013c80 [ 300.753344] 9c40: 00000000 8d440000 00000000 8d3a9d1c 00000008 00000000 4000286d 806f89e0 [ 300.761540] 9c60: 8c0eb9d0 00000000 a0000013 8d440008 00001000 00000000 00000000 806f89e0 [ 300.769735] 9c80: 8d440000 8c0eb930 00001000 20000008 00000880 8b5cf000 00000001 8019a954 [ 300.777930] 9ca0: 00001000 80085108 00000000 8d4405f4 8d440604 806f89e0 806f89e0 8d3a9d80 [ 300.786125] 9cc0: 00000880 20000008 8c0eb9d0 00000008 806f89e0 8d3a9d14 00000000 8c0eb9d0 [ 300.794319] 9ce0: 00000000 8008bd80 8d3a9d80 8008c718 00000001 00000000 00000009 00000001 [ 300.802513] 9d00: 8008bd6c 8c0eb9d0 00008f7d 00000000 00008fa8 00000001 00000000 806f89e0 [ 300.810708] 9d20: 8b5cf000 8b5cff7e 0000002a 00000000 0000002a 0000002a 8d3a8000 8c0eb9d0 [ 300.818902] 9d40: 00000000 00000f7e 803eb838 00000000 0000002a 00000009 0000002a 8d3a9d80 [ 300.827096] 9d60: 8c0eb9d0 00008f7e 00000000 00008f7e 00000000 00000001 00000000 80085dac [ 300.835291] 9d80: 00000001 00000000 00000000 7fffffff 00000000 00000000 00008f7e 00000000 [ 300.843485] 9da0: 00008fa7 00000000 00000000 00000000 8c0eb9d0 00000015 8c0eb9d0 00008fa7 [ 300.851680] 9dc0: 00000000 80085de8 00008fa7 00000000 00000001 80574e68 80574e60 8c0eb9d0 [ 300.859875] 9de0: 8d087a80 00008fa7 00000000 0000002a 8d3a9f38 800d4294 00008fa7 00000000 [ 300.868069] 9e00: 00008f7e 00008fa7 00000000 0000002a 00000000 800d4348 00008fa7 00000000 [ 300.876264] 9e20: 00000001 8d087a80 8c0eb9a4 0000002a 00000000 8d087a80 00000001 800865c0 [ 300.884458] 9e40: 0000002a 00000000 00008f7e 00000000 8d3a9ec0 8d440000 00000000 00000001 [ 300.892653] 9e60: 8d3a9f38 80199254 00008f7e 00000000 8052db38 00100000 00000000 00000000 [ 300.900847] 9e80: 00000000 000000a0 60000013 00000000 00000002 a0000013 8d3a9ec0 8d3a9f80 [ 300.909042] 9ea0: 8d087a80 8d3a9f38 fffffdee 8d3a8000 00008f7e 800b25c0 00008f7e 00000000 [ 300.917236] 9ec0: a0000013 8d0d1d80 00000000 00000001 ffffffff 8d087a80 00000000 00000000 [ 300.925431] 9ee0: 00000000 00000000 8d102e60 40000013 00000000 00000000 00008fa8 00000000 [ 300.933626] 9f00: 2aac9000 0000003e 0000002a 60000113 0000002a 00000000 00000000 00000102 [ 300.941821] 9f20: 0000000a 80533af0 8d3a9f44 8004e01c 00000004 8c004000 7eb99a48 0000002a [ 300.950016] 9f40: 0000002a 8d087a80 7eb99a48 8d3a9f80 0000002a 00000000 0002a6f0 800b2fc4 [ 300.958211] 9f60: 8d087a80 7eb99a48 8d087a80 7eb99a48 00008f7e 00000000 0000002a 800b3118 [ 300.966405] 9f80: 00008f7e 00000000 0000002a 00000000 0000002a 00007fff 7eba1a70 00000004 [ 300.974600] 9fa0: 8002b104 8002af80 0000002a 00007fff 00000004 7eb99a48 0000002a 000003be [ 300.982794] 9fc0: 0000002a 00007fff 7eba1a70 00000004 7eb99a48 0000002a 00000000 0002a6f0 [ 300.990989] 9fe0: 0000002a 7eb99a28 0000ae1c 2ab9924c 40000010 00000004 00000000 00000000 [ 300.999209] [<801fb698>] (__up_write+0x40/0x188) from [<80283e08>] (leb_write_unlock+0xa0/0xf4) [ 301.007931] [<80283e08>] (leb_write_unlock+0xa0/0xf4) from [<802850e0>] (ubi_eba_write_leb+0x568/0x80c) [ 301.017345] [<802850e0>] (ubi_eba_write_leb+0x568/0x80c) from [<80282c34>] (ubi_leb_write+0x124/0x168) [ 301.026683] [<80282c34>] (ubi_leb_write+0x124/0x168) from [<801a4bd4>] (ubifs_leb_write+0x104/0x118) [ 301.035842] [<801a4bd4>] (ubifs_leb_write+0x104/0x118) from [<801a5308>] (ubifs_wbuf_write_nolock+0x520/0x9e8) [ 301.045867] [<801a5308>] (ubifs_wbuf_write_nolock+0x520/0x9e8) from [<80198984>] (ubifs_jnl_write_data+0x200/0x33c) [ 301.056326] [<80198984>] (ubifs_jnl_write_data+0x200/0x33c) from [<8019a954>] (do_writepage+0x9c/0x1e4) [ 301.065751] [<8019a954>] (do_writepage+0x9c/0x1e4) from [<8008bd80>] (__writepage+0x14/0x5c) [ 301.074215] [<8008bd80>] (__writepage+0x14/0x5c) from [<8008c718>] (write_cache_pages+0x24c/0x32c) [ 301.083197] [<8008c718>] (write_cache_pages+0x24c/0x32c) from [<80085dac>] (__filemap_fdatawrite_range+0x64/0x6c) [ 301.093482] [<80085dac>] (__filemap_fdatawrite_range+0x64/0x6c) from [<80085de8>] (filemap_write_and_wait_range+0x34/0x68) [ 301.104562] [<80085de8>] (filemap_write_and_wait_range+0x34/0x68) from [<800d4294>] (vfs_fsync_range+0x34/0x7c) [ 301.114677] [<800d4294>] (vfs_fsync_range+0x34/0x7c) from [<800d4348>] (generic_write_sync+0x6c/0x74) [ 301.123918] [<800d4348>] (generic_write_sync+0x6c/0x74) from [<800865c0>] (generic_file_aio_write+0xb4/0xc8) [ 301.133768] [<800865c0>] (generic_file_aio_write+0xb4/0xc8) from [<80199254>] (ubifs_aio_write+0x168/0x17c) [ 301.143533] [<80199254>] (ubifs_aio_write+0x168/0x17c) from [<800b25c0>] (do_sync_write+0xa0/0xe8) [ 301.152513] [<800b25c0>] (do_sync_write+0xa0/0xe8) from [<800b2fc4>] (vfs_write+0xac/0x154) [ 301.160884] [<800b2fc4>] (vfs_write+0xac/0x154) from [<800b3118>] (sys_write+0x3c/0x68) [ 301.168917] [<800b3118>] (sys_write+0x3c/0x68) from [<8002af80>] (ret_fast_syscall+0x0/0x30) [ 301.177375] Code: e4871004 e5902004 e1520007 0a00003c (e592600c) [ 301.183561] mxc_ipu mxc_ipu: Channel already disabled 9 [ 301.188798] mxc_ipu mxc_ipu: Channel already uninitialized 9 [ 301.194579] BUG: scheduling while atomic: integck/1243/0x00000004 [ 301.200679] Modules linked in: [ 301.203783] [<8002f828>] (unwind_backtrace+0x0/0x16c) from [<803d74e4>] (schedule+0x6c/0x324) [ 301.212333] [<803d74e4>] (schedule+0x6c/0x324) from [<803d7f70>] (schedule_timeout+0x1c8/0x1fc) [ 301.221059] [<803d7f70>] (schedule_timeout+0x1c8/0x1fc) from [<8005d758>] (msleep+0x14/0x24) [ 301.229538] [<8005d758>] (msleep+0x14/0x24) from [<802f86cc>] (ipu_init_sync_panel+0x314/0x1150) [ 301.238362] [<802f86cc>] (ipu_init_sync_panel+0x314/0x1150) from [<8021c4cc>] (mxcfb_set_par+0x4e0/0x5e8) [ 301.247955] [<8021c4cc>] (mxcfb_set_par+0x4e0/0x5e8) from [<8021c690>] (mxcfb_blank+0xbc/0xf8) [ 301.256587] [<8021c690>] (mxcfb_blank+0xbc/0xf8) from [<8020c264>] (fb_blank+0x3c/0x68) [ 301.264612] [<8020c264>] (fb_blank+0x3c/0x68) from [<80214898>] (fbcon_blank+0xe8/0x1f4) [ 301.272729] [<80214898>] (fbcon_blank+0xe8/0x1f4) from [<8023be44>] (do_unblank_screen+0xc4/0x13c) [ 301.281712] [<8023be44>] (do_unblank_screen+0xc4/0x13c) from [<801fef08>] (bust_spinlocks+0x20/0x44) [ 301.290869] [<801fef08>] (bust_spinlocks+0x20/0x44) from [<8002e358>] (die+0x240/0x304) [ 301.298894] [<8002e358>] (die+0x240/0x304) from [<800306ac>] (__do_kernel_fault+0x64/0x84) [ 301.307178] [<800306ac>] (__do_kernel_fault+0x64/0x84) from [<8003088c>] (do_page_fault+0x1c0/0x1d4) [ 301.316332] [<8003088c>] (do_page_fault+0x1c0/0x1d4) from [<8002a2c8>] (do_DataAbort+0x34/0x94) [ 301.325054] [<8002a2c8>] (do_DataAbort+0x34/0x94) from [<8002aa2c>] (__dabt_svc+0x4c/0x60) [ 301.333329] Exception stack(0x8d3a9a88 to 0x8d3a9ad0) [ 301.338395] 9a80: 8d3fb298 00000000 00000000 8d3a8000 8d3fb280 8d3fb298 [ 301.346592] 9aa0: 00000000 8d3fb29c 60000013 00000080 00013d08 00000012 8d3a9af8 8d3a9ad0 [ 301.354782] 9ac0: 80283e08 801fb698 00000093 ffffffff [ 301.359855] [<8002aa2c>] (__dabt_svc+0x4c/0x60) from [<801fb698>] (__up_write+0x40/0x188) [ 301.368055] [<801fb698>] (__up_write+0x40/0x188) from [<80283e08>] (leb_write_unlock+0xa0/0xf4) [ 301.376775] [<80283e08>] (leb_write_unlock+0xa0/0xf4) from [<802850e0>] (ubi_eba_write_leb+0x568/0x80c) [ 301.386189] [<802850e0>] (ubi_eba_write_leb+0x568/0x80c) from [<80282c34>] (ubi_leb_write+0x124/0x168) [ 301.395519] [<80282c34>] (ubi_leb_write+0x124/0x168) from [<801a4bd4>] (ubifs_leb_write+0x104/0x118) [ 301.404674] [<801a4bd4>] (ubifs_leb_write+0x104/0x118) from [<801a5308>] (ubifs_wbuf_write_nolock+0x520/0x9e8) [ 301.414697] [<801a5308>] (ubifs_wbuf_write_nolock+0x520/0x9e8) from [<80198984>] (ubifs_jnl_write_data+0x200/0x33c) [ 301.425155] [<80198984>] (ubifs_jnl_write_data+0x200/0x33c) from [<8019a954>] (do_writepage+0x9c/0x1e4) [ 301.434571] [<8019a954>] (do_writepage+0x9c/0x1e4) from [<8008bd80>] (__writepage+0x14/0x5c) [ 301.443031] [<8008bd80>] (__writepage+0x14/0x5c) from [<8008c718>] (write_cache_pages+0x24c/0x32c) [ 301.452012] [<8008c718>] (write_cache_pages+0x24c/0x32c) from [<80085dac>] (__filemap_fdatawrite_range+0x64/0x6c) [ 301.462296] [<80085dac>] (__filemap_fdatawrite_range+0x64/0x6c) from [<80085de8>] (filemap_write_and_wait_range+0x34/0x68) [ 301.473367] [<80085de8>] (filemap_write_and_wait_range+0x34/0x68) from [<800d4294>] (vfs_fsync_range+0x34/0x7c) [ 301.483479] [<800d4294>] (vfs_fsync_range+0x34/0x7c) from [<800d4348>] (generic_write_sync+0x6c/0x74) [ 301.492722] [<800d4348>] (generic_write_sync+0x6c/0x74) from [<800865c0>] (generic_file_aio_write+0xb4/0xc8) [ 301.502570] [<800865c0>] (generic_file_aio_write+0xb4/0xc8) from [<80199254>] (ubifs_aio_write+0x168/0x17c) [ 301.512332] [<80199254>] (ubifs_aio_write+0x168/0x17c) from [<800b25c0>] (do_sync_write+0xa0/0xe8) [ 301.521311] [<800b25c0>] (do_sync_write+0xa0/0xe8) from [<800b2fc4>] (vfs_write+0xac/0x154) [ 301.529681] [<800b2fc4>] (vfs_write+0xac/0x154) from [<800b3118>] (sys_write+0x3c/0x68) [ 301.537706] [<800b3118>] (sys_write+0x3c/0x68) from [<8002af80>] (ret_fast_syscall+0x0/0x30) [ 301.548089] BUG: scheduling while atomic: integck/1243/0x00000004 [ 301.554197] Modules linked in: [ 301.557323] [<8002f828>] (unwind_backtrace+0x0/0x16c) from [<803d74e4>] (schedule+0x6c/0x324) [ 301.565872] [<803d74e4>] (schedule+0x6c/0x324) from [<803d7f70>] (schedule_timeout+0x1c8/0x1fc) [ 301.574612] [<803d7f70>] (schedule_timeout+0x1c8/0x1fc) from [<8005d758>] (msleep+0x14/0x24) [ 301.583093] [<8005d758>] (msleep+0x14/0x24) from [<802f86cc>] (ipu_init_sync_panel+0x314/0x1150) [ 301.591921] [<802f86cc>] (ipu_init_sync_panel+0x314/0x1150) from [<8021c4cc>] (mxcfb_set_par+0x4e0/0x5e8) [ 301.601528] [<8021c4cc>] (mxcfb_set_par+0x4e0/0x5e8) from [<8021c690>] (mxcfb_blank+0xbc/0xf8) [ 301.610175] [<8021c690>] (mxcfb_blank+0xbc/0xf8) from [<8020c264>] (fb_blank+0x3c/0x68) [ 301.618213] [<8020c264>] (fb_blank+0x3c/0x68) from [<80214898>] (fbcon_blank+0xe8/0x1f4) [ 301.626327] [<80214898>] (fbcon_blank+0xe8/0x1f4) from [<8023be44>] (do_unblank_screen+0xc4/0x13c) [ 301.635324] [<8023be44>] (do_unblank_screen+0xc4/0x13c) from [<801fef08>] (bust_spinlocks+0x20/0x44) [ 301.644494] [<801fef08>] (bust_spinlocks+0x20/0x44) from [<8002e358>] (die+0x240/0x304) [ 301.652532] [<8002e358>] (die+0x240/0x304) from [<800306ac>] (__do_kernel_fault+0x64/0x84) [ 301.660829] [<800306ac>] (__do_kernel_fault+0x64/0x84) from [<8003088c>] (do_page_fault+0x1c0/0x1d4) [ 301.669995] [<8003088c>] (do_page_fault+0x1c0/0x1d4) from [<8002a2c8>] (do_DataAbort+0x34/0x94) [ 301.678727] [<8002a2c8>] (do_DataAbort+0x34/0x94) from [<8002aa2c>] (__dabt_svc+0x4c/0x60) [ 301.687015] Exception stack(0x8d3a9a88 to 0x8d3a9ad0) [ 301.692080] 9a80: 8d3fb298 00000000 00000000 8d3a8000 8d3fb280 8d3fb298 [ 301.700289] 9aa0: 00000000 8d3fb29c 60000013 00000080 00013d08 00000012 8d3a9af8 8d3a9ad0 [ 301.708492] 9ac0: 80283e08 801fb698 00000093 ffffffff [ 301.713567] [<8002aa2c>] (__dabt_svc+0x4c/0x60) from [<801fb698>] (__up_write+0x40/0x188) [ 301.721782] [<801fb698>] (__up_write+0x40/0x188) from [<80283e08>] (leb_write_unlock+0xa0/0xf4) [ 301.730515] [<80283e08>] (leb_write_unlock+0xa0/0xf4) from [<802850e0>] (ubi_eba_write_leb+0x568/0x80c) [ 301.739951] [<802850e0>] (ubi_eba_write_leb+0x568/0x80c) from [<80282c34>] (ubi_leb_write+0x124/0x168) [ 301.749298] [<80282c34>] (ubi_leb_write+0x124/0x168) from [<801a4bd4>] (ubifs_leb_write+0x104/0x118) [ 301.758469] [<801a4bd4>] (ubifs_leb_write+0x104/0x118) from [<801a5308>] (ubifs_wbuf_write_nolock+0x520/0x9e8) [ 301.768507] [<801a5308>] (ubifs_wbuf_write_nolock+0x520/0x9e8) from [<80198984>] (ubifs_jnl_write_data+0x200/0x33c) [ 301.778978] [<80198984>] (ubifs_jnl_write_data+0x200/0x33c) from [<8019a954>] (do_writepage+0x9c/0x1e4) [ 301.788408] [<8019a954>] (do_writepage+0x9c/0x1e4) from [<8008bd80>] (__writepage+0x14/0x5c) [ 301.796882] [<8008bd80>] (__writepage+0x14/0x5c) from [<8008c718>] (write_cache_pages+0x24c/0x32c) [ 301.805865] [<8008c718>] (write_cache_pages+0x24c/0x32c) from [<80085dac>] (__filemap_fdatawrite_range+0x64/0x6c) [ 301.816163] [<80085dac>] (__filemap_fdatawrite_range+0x64/0x6c) from [<80085de8>] (filemap_write_and_wait_range+0x34/0x68) [ 301.827251] [<80085de8>] (filemap_write_and_wait_range+0x34/0x68) from [<800d4294>] (vfs_fsync_range+0x34/0x7c) [ 301.837378] [<800d4294>] (vfs_fsync_range+0x34/0x7c) from [<800d4348>] (generic_write_sync+0x6c/0x74) [ 301.846634] [<800d4348>] (generic_write_sync+0x6c/0x74) from [<800865c0>] (generic_file_aio_write+0xb4/0xc8) [ 301.856485] [<800865c0>] (generic_file_aio_write+0xb4/0xc8) from [<80199254>] (ubifs_aio_write+0x168/0x17c) [ 301.866277] [<80199254>] (ubifs_aio_write+0x168/0x17c) from [<800b25c0>] (do_sync_write+0xa0/0xe8) [ 301.875273] [<800b25c0>] (do_sync_write+0xa0/0xe8) from [<800b2fc4>] (vfs_write+0xac/0x154) [ 301.883669] [<800b2fc4>] (vfs_write+0xac/0x154) from [<800b3118>] (sys_write+0x3c/0x68) [ 301.891708] [<800b3118>] (sys_write+0x3c/0x68) from [<8002af80>] (ret_fast_syscall+0x0/0x30) [ 301.904585] ---[ end trace 650a5c397325e07d ]--- [ 301.909255] note: integck[1243] exited with preempt_count 2 /ubitest-sync-136.sh: line 24: 1243 Segmentation fault /tests-1.4.9/fs-tests/integrity/integck -v -e /mnt/integ-nor-ubi-136/ > We discovered a bug recently which may cause memory corruptions. I do > not know if it is accountable for this problem or not, but it is worth > having it. See these patches in the l2-mtd.git tree: > > 605c912bb843c024b1ed173dc427cd5c08e5d54d UBIFS: fix a horrid bug > 33f1a63ae84dfd9ad298cf275b8f1887043ced36 UBIFS: prepare to fix a horrid bug > > -- > Best Regards, > Artem Bityutskiy > > ______________________________________________________ > Linux MTD discussion mailing list > http://lists.infradead.org/mailman/listinfo/linux-mtd/