Red Hat Bugzilla – Bug 849343
kernel BUG at fs/btrfs/extent_io.c:2718!
Last modified: 2015-05-17 21:40:30 EDT
Description of problem: Running out of memory, OOM killed hungry process then I got this "kernel BUG at fs/btrfs/extent_io.c:2718!" traceback. Despite of OOM event, BTRFS should be robust and stable as other filesystems when there is not enough RAM available. Version-Release number of selected component (if applicable): kernel-3.5.2-1.fc17.x86_64 How reproducible: always Steps to Reproduce: 0. disable swap 1. run Firefox 2. run OOM Actual results: kernel oops Expected results: no oops Additional info: kernel BUG at fs/btrfs/extent_io.c:2718! invalid opcode: 0000 [#1] SMP CPU 2 Modules linked in: fuse lockd sunrpc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack tpm_bios sha256_generic vfat fat snd_hda_codec_conexant arc4 coretemp kvm_intel kvm microcode uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev cdc_ether media cdc_subset usbnet iwlwifi mii snd_hda_intel snd_hda_codec mac80211 e1000e snd_hwdep btusb i2c_i801 snd_pcm bluetooth mei lpc_ich mfd_core snd_page_alloc cfg80211 snd_timer uinput thinkpad_acpi snd soundcore rfkill btrfs libcrc32c zlib_deflate xts gf128mul dm_crypt crc32c_intel ghash_clmulni_intel sdhci_pci sdhci mmc_core wmi i915 video i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: scsi_wait_scan] Pid: 1783, comm: firefox Not tainted 3.5.2-1.fc17.x86_64 #1 LENOVO 42404LG/42404LG RIP: 0010:[<ffffffffa0195ed0>] [<ffffffffa0195ed0>] __extent_read_full_page+0x690/0x6a0 [btrfs] RSP: 0018:ffff8800798439b8 EFLAGS: 00010246 RAX: 00000000fffffff4 RBX: 0000000000001000 RCX: 0000000000000000 RDX: 000000018015000a RSI: ffffea00031f9f40 RDI: ffff8800c7e7de40 RBP: ffff880079843ab8 R08: ffff8800c7e7d9c0 R09: 0000000180150009 R10: 00000000c7e7dc01 R11: 6465726168732d6e R12: 0000000000860fff R13: 000000078c1e3000 R14: 0000000000860000 R15: 0000000000000000 FS: 00007f81384f0700(0000) GS:ffff88011e280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000003fbc6613b7 CR3: 0000000086cf2000 CR4: 00000000000407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process firefox (pid: 1783, threadinfo ffff880079842000, task ffff8800bdcd9710) Stack: ffff8801165a1380 ffff880079843ae8 ffffffffa0194850 ffffc90000000000 0000000000020001 0000000000020001 000000000087ffff ffff880079843ae8 ffff880079843fd8 ffff8800647de000 0000000000000000 ffff880079843af0 Call Trace: [<ffffffffa0194850>] ? repair_io_failure+0x1e0/0x1e0 [btrfs] [<ffffffffa01759f0>] ? can_nocow_odirect+0x260/0x260 [btrfs] [<ffffffffa0196d70>] extent_readpages+0xa0/0xe0 [btrfs] [<ffffffffa01759f0>] ? can_nocow_odirect+0x260/0x260 [btrfs] [<ffffffffa0173bef>] btrfs_readpages+0x1f/0x30 [btrfs] [<ffffffff81130f67>] __do_page_cache_readahead+0x1b7/0x240 [<ffffffff81131311>] ra_submit+0x21/0x30 [<ffffffff81127591>] filemap_fault+0x421/0x480 [<ffffffff8101a953>] ? native_sched_clock+0x13/0x80 [<ffffffff8114a3a1>] __do_fault+0x71/0x560 [<ffffffff8114d335>] handle_pte_fault+0x95/0xb10 [<ffffffff8160b0ff>] ? __schedule+0x3cf/0x7c0 [<ffffffff8114e6b9>] handle_mm_fault+0x259/0x320 [<ffffffff8161030c>] do_page_fault+0x15c/0x4b0 [<ffffffff811ca9bd>] ? ep_scan_ready_list.isra.8+0x19d/0x1a0 [<ffffffff811cb855>] ? sys_epoll_wait+0x95/0x430 [<ffffffff8160ce65>] page_fault+0x25/0x30 Code: 00 00 00 4c 8b 7d 98 e9 45 fa ff ff 4d 89 ef 41 bc 00 10 00 00 45 31 d2 c7 85 54 ff ff ff 00 00 00 00 e9 e7 fe ff ff 0f 0b 0f 0b <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 RIP [<ffffffffa0195ed0>] __extent_read_full_page+0x690/0x6a0 [btrfs] RSP <ffff8800798439b8>
can you still reproduce this on current kernels ?
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Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.