https://bugzilla.kernel.org/show_bug.cgi?id=44731 --- Comment #14 from Jan Kara <jack@xxxxxxx> 2012-08-31 09:23:44 --- The culprit of your hang now is: ------------[ cut here ]------------ kernel BUG at /build/buildd/linux-3.2.0/fs/jbd2/transaction.c:1093! invalid opcode: 0000 [#1] SMP CPU 0 Modules linked in: binfmt_misc vesafb dcdbas ses enclosure mac_hid lp parport bnx2 megaraid_sas Pid: 20387, comm: pifs4/eio Not tainted 3.2.0-23-generic #36-Ubuntu Dell Inc. PowerEdge R210 II/09T7VV RIP: 0010:[<ffffffff8125f27c>] [<ffffffff8125f27c>] jbd2_journal_dirty_metadata+0x1ec/0x230 RSP: 0018:ffff880102c29ae8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88022e128f00 RCX: ffff8801444048e0 RDX: ffff88022312ce58 RSI: 0000000000000000 RDI: ffff88022312ce58 RBP: ffff880102c29b38 R08: ffff880192ce9138 R09: 7010000000000000 R10: fe4f31d37b9c4e02 R11: 0000000000000000 R12: ffff880192ce9138 R13: ffff88014575ff50 R14: ffff88022fbae000 R15: ffff88022312ce58 FS: 00007ffc9fe65700(0000) GS:ffff88023fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f702b43a04c CR3: 00000002304b0000 CR4: 00000000000406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process pifs4/eio (pid: 20387, threadinfo ffff880102c28000, task ffff88010065ade0) Stack: ffff88022312ce58 ffff88014575ff50 ffff880102c29b48 ffffffff8125f9e8 ffff880102c29b28 ffff8801444048e0 000000000000038a ffffffff8182bb37 ffff88022312ce58 ffff88022312ce58 ffff880102c29b88 ffffffff81241bcb Call Trace: [<ffffffff8125f9e8>] ? jbd2_journal_get_create_access+0xd8/0x170 [<ffffffff81241bcb>] __ext4_handle_dirty_metadata+0x8b/0x130 [<ffffffff8123d3f2>] ext4_ext_split+0x2f2/0x710 [<ffffffff8123e104>] ? ext4_ext_find_extent+0x134/0x3a0 [<ffffffff8123e4a4>] ext4_ext_create_new_leaf+0x134/0x180 [<ffffffff8123eb47>] ext4_ext_insert_extent+0xc7/0x440 [<ffffffff8123bffc>] ? ext4_ext_check_overlap.isra.20+0xbc/0xd0 [<ffffffff8124036c>] ext4_ext_map_blocks+0x58c/0xe70 [<ffffffff8125dd8a>] ? start_this_handle.isra.9+0x37a/0x3e0 [<ffffffff81215e45>] ext4_map_blocks+0x1b5/0x280 [<ffffffff81240fb2>] ext4_fallocate+0x192/0x3e0 [<ffffffff81176602>] do_fallocate+0xf2/0x160 [<ffffffff811766bb>] sys_fallocate+0x4b/0x70 [<ffffffff81664a82>] system_call_fastpath+0x16/0x1b Code: 08 49 8b 54 24 18 49 8d b6 58 03 00 00 89 04 24 49 89 d9 48 c7 c7 c0 0b a2 81 31 c0 e8 c4 4e 3e 00 b8 ea ff ff ff e9 d2 fe ff ff <0f> 0b 4d 85 c9 74 04 41 8b 41 08 45 31 c0 48 85 c9 74 04 44 8b RIP [<ffffffff8125f27c>] jbd2_journal_dirty_metadata+0x1ec/0x230 RSP <ffff880102c29ae8> --- Which means that we reserved too few credits for the transaction allocating blocks from fallocate. I was looking into the code and the math in ext4_chunk_trans_blocks() looks sound. But I don't know all the details of extent code. Maybe other ext4 guys will see the problem quicker than me... -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- 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
