(This is Fedora's kernel 3.11.6-200.fc19.x86_64) I have a file on my btrfs filesystem. Reading it results in:
[ 170.261789] general protection fault: 0000 [#1] SMP [ 170.261950] Modules linked in: rfcomm fuse xt_CHECKSUM nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6t_REJECT tun bnep bluetooth rfkill xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw f71882fg vfat fat snd_hda_codec_hdmi snd_hda_codec_realtek btrfs zlib_deflate raid6_pq libcrc32c xor x86_pkg_temp_thermal coretemp kvm_intel iTCO_wdt joydev kvm iTCO_vendor_support snd_hda_intel mxm_wmi snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm microcode sb_edac i2c_i801 serio_raw edac_core e1000e snd_page_alloc [ 170.264416] ntb snd_timer mei_me snd ptp mei lpc_ich soundcore shpchp pps_core wmi mfd_core mperf uinput binfmt_misc dm_crypt radeon hid_logitech_dj crc32_pclmul i2c_algo_bit drm_kms_helper crc32c_intel ttm ghash_clmulni_intel drm firewire_ohci firewire_core i2c_core crc_itu_t [ 170.265260] CPU: 0 PID: 2947 Comm: thg Tainted: G W 3.11.6-200.fc19.x86_64 #1 [ 170.265503] Hardware name: MSI MS-7760/X79A-GD65 (8D) (MS-7760), BIOS V1.8 10/18/2012 [ 170.265745] task: ffff88042ee48f40 ti: ffff8803fdb30000 task.ti: ffff8803fdb30000 [ 170.265975] RIP: 0010:[<ffffffff81307d7d>] [<ffffffff81307d7d>] memcpy+0xd/0x110 [ 170.266209] RSP: 0018:ffff8803fdb31960 EFLAGS: 00010202 [ 170.266373] RAX: ffff88040369ede9 RBX: 000000000000006c RCX: 000000000000000d [ 170.266592] RDX: 0000000000000004 RSI: 0005080000000000 RDI: ffff88040369ede9 [ 170.266812] RBP: ffff8803fdb31998 R08: 0000000000001000 R09: ffff88040369e000 [ 170.267031] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8803eac91390 [ 170.267251] R13: 0000160000000000 R14: ffff88040369ee55 R15: 000000000000006c [ 170.267471] FS: 00007f223b42c740(0000) GS:ffff88045fc00000(0000) knlGS:0000000000000000 [ 170.267721] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 170.267898] CR2: 00000000031a1024 CR3: 0000000412d6a000 CR4: 00000000000407f0 [ 170.268117] Stack: [ 170.268179] ffffffffa04bf26c 0000000000001000 ffff8804477de000 0000000000000000 [ 170.268424] ffff88041688a900 ffff8803eaca2210 ffff8803f0fcda18 ffff8803fdb31a58 [ 170.268666] ffffffffa04a4376 0000000000000000 000000000000019d 00000000ffffffff [ 170.268909] Call Trace: [ 170.268994] [<ffffffffa04bf26c>] ? read_extent_buffer+0xbc/0x110 [btrfs] [ 170.269202] [<ffffffffa04a4376>] btrfs_get_extent+0x926/0x9b0 [btrfs] [ 170.269403] [<ffffffffa04bc53e>] __extent_read_full_page+0x2ee/0x700 [btrfs] [ 170.269622] [<ffffffffa04a3a50>] ? btrfs_submit_direct+0x660/0x660 [btrfs] [ 170.269832] [<ffffffff81159f53>] ? __inc_zone_page_state+0x33/0x40 [ 170.270028] [<ffffffffa04a3a50>] ? btrfs_submit_direct+0x660/0x660 [btrfs] [ 170.270243] [<ffffffffa04bd945>] extent_readpages+0x195/0x200 [btrfs] [ 170.270440] [<ffffffff81183129>] ? alloc_pages_current+0xa9/0x170 [ 170.270635] [<ffffffffa04a136f>] btrfs_readpages+0x1f/0x30 [btrfs] [ 170.270824] [<ffffffff811484fe>] __do_page_cache_readahead+0x1ae/0x240 [ 170.271027] [<ffffffff811489c6>] ondemand_readahead+0x126/0x250 [ 170.271212] [<ffffffff81148b23>] page_cache_sync_readahead+0x33/0x50 [ 170.271410] [<ffffffff8113da45>] generic_file_aio_read+0x4b5/0x700 [ 170.271604] [<ffffffff811a7ab0>] do_sync_read+0x80/0xb0 [ 170.271766] [<ffffffff811a80de>] vfs_read+0x9e/0x170 [ 170.271921] [<ffffffff811a8c09>] SyS_read+0x49/0xa0 [ 170.272074] [<ffffffff810e6496>] ? __audit_syscall_exit+0x1f6/0x2a0 [ 170.272271] [<ffffffff81656e99>] system_call_fastpath+0x16/0x1b [ 170.272458] Code: 43 4e 5b 5d c3 66 0f 1f 84 00 00 00 00 00 e8 fb fb ff ff eb e2 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 <f3> 48 a5 89 d1 f3 a4 c3 20 4c 8b 06 4c 8b 4e 08 4c 8b 56 10 4c [ 170.273297] RIP [<ffffffff81307d7d>] memcpy+0xd/0x110 [ 170.273457] RSP <ffff8803fdb31960> [ 170.348204] ---[ end trace 7d04a6835a0093fd ]--- This issue has survived a reboot. (The taint flag is due to a bogus BGRT table in my EFI BIOS. It's not corrupting any kernel data structures.) --Andy -- Andy Lutomirski AMA Capital Management, LLC -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
