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Message-ID: <AANLkTi=j9zsaYNcu=NgGV=HfE-3rNHzVswov8VrgwjQp@mail.gmail.com> Date: Fri, 10 Dec 2010 21:30:42 +0100 From: Fabio Comolli <fabio.comolli@...il.com> To: linux-kernel <linux-kernel@...r.kernel.org>, linux-btrfs <linux-btrfs@...r.kernel.org> Cc: Chris Mason <chris.mason@...cle.com> Subject: Crash with btrfs rootfs on dm-crypt [ kernel BUG at fs/btrfs/inode.c:806! ] on linux 2.6.37-rc5 Hi. Just hit the BUG in the subj. Relevant part of the dmesg output I somehow managed to save: [ 8710.647123] ------------[ cut here ]------------ [ 8710.647210] kernel BUG at fs/btrfs/inode.c:806! [ 8710.647282] invalid opcode: 0000 [#1] PREEMPT [ 8710.647362] last sysfs file: /sys/devices/platform/eeepc/hwmon/hwmon0/fan1_input [ 8710.647476] Modules linked in: [last unloaded: scsi_wait_scan] [ 8710.647577] [ 8710.647607] Pid: 1106, comm: flush-btrfs-1 Not tainted 2.6.37-rc5-dirty #1 900/900 [ 8710.647726] EIP: 0060:[<c1118724>] EFLAGS: 00010286 CPU: 0 [ 8710.647819] EIP is at cow_file_range+0x230/0x3f9 [ 8710.647893] EAX: ffffffe4 EBX: 1356a000 ECX: c1491237 EDX: 00000001 [ 8710.647990] ESI: 00000000 EDI: f5c0e000 EBP: 00000000 ESP: f5f79cd8 [ 8710.648006] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 8710.648006] Process flush-btrfs-1 (pid: 1106, ti=f5f78000 task=f5cc4dc0 task.ti=f5f78000) [ 8710.648006] Stack: [ 8710.648006] 00909fff 00000000 001fe000 00000000 f5c0e000 f62ff8b8 00001000 00000000 [ 8710.648006] 00001000 f62ff7d4 f6161000 f62ff7d0 f7699a20 00000000 00000000 a8000000 [ 8710.648006] 00000000 00000000 00000000 13767fff 00000000 f62ff7b8 c1119163 12e5f000 [ 8710.648006] Call Trace: [ 8710.648006] [<c1119163>] ? run_delalloc_range+0xa3/0xda [ 8710.648006] [<c112d8da>] ? __extent_writepage+0x206/0x6e8 [ 8710.648006] [<c10577e5>] ? find_get_pages_tag+0xa0/0xc9 [ 8710.648006] [<c112decd>] ? extent_write_cache_pages.clone.17.clone.29+0x111/0x1d8 [ 8710.648006] [<c112e20c>] ? extent_writepages+0x3d/0x4f [ 8710.648006] [<c11161c9>] ? btrfs_get_extent+0x0/0x882 [ 8710.648006] [<c1115868>] ? btrfs_writepages+0x18/0x1b [ 8710.648006] [<c105d99c>] ? do_writepages+0x12/0x1b [ 8710.648006] [<c108facc>] ? writeback_single_inode+0x95/0x198 [ 8710.648006] [<c109042f>] ? writeback_sb_inodes+0x88/0xf9 [ 8710.648006] [<c1090617>] ? writeback_inodes_wb+0xa2/0xe6 [ 8710.648006] [<c1090767>] ? wb_writeback+0x10c/0x180 [ 8710.648006] [<c10908ca>] ? wb_do_writeback+0xef/0x105 [ 8710.648006] [<c109093c>] ? bdi_writeback_thread+0x5c/0x107 [ 8710.648006] [<c10908e0>] ? bdi_writeback_thread+0x0/0x107 [ 8710.648006] [<c1033d82>] ? kthread+0x62/0x67 [ 8710.648006] [<c1033d20>] ? kthread+0x0/0x67 [ 8710.648006] [<c1002c76>] ? kernel_thread_helper+0x6/0x10 [ 8710.648006] Code: 50 6a 00 6a 00 8b 7c 24 34 8b 87 c8 01 00 00 52 89 fa 50 ff 74 24 38 ff 74 24 38 8b 44 24 5c e8 69 f8 fe ff 83 c4 34 85 c0 74 02 <0f> 0b b8 50 00 00 00 e8 2b 84 00 00 8b 54 24 37 8b 4c 24 3b 89 [ 8710.648006] EIP: [<c1118724>] cow_file_range+0x230/0x3f9 SS:ESP 0068:f5f79cd8 [ 8710.697024] ---[ end trace 81ccff9fc7ce3765 ]--- The kernel is dirty because of sched_autogroup_final_v2.6.37-rc4-12-g22a5b56.diff . After the crash the (encrypted) root filesystem was unusable until reboot; the /home filesystem (also btrfs) was ok (the dmesg output was saved there). After the reboot btrfsck on /dev/mapper/root showed no problems at all. Also, the dmesg output is full of messages (about 1850 lines) like the following: [ 8616.109232] btrfs allocation failed flags 1, wanted 65536 [ 8616.109311] space_info has 79597568 free, is full [ 8616.109318] space_info total=2807562240, used=2727600128, pinned=364544, reserved=0, may_use=290816, readonly=0 [ 8616.109326] block group 12582912 has 8388608 bytes, 8327168 used 61440 pinned 0 reserved [ 8616.109332] block group has cluster?: no [ 8616.109336] 0 blocks of free space at or bigger than bytes is [ 8616.109343] block group 216793088 has 374865920 bytes, 370073600 used 167936 pinned 0 reserved [ 8616.109349] entry offset 216793088, bytes 978944, bitmap yes [ 8616.109355] entry offset 351010816, bytes 790528, bitmap yes [ 8616.109361] entry offset 485228544, bytes 647168, bitmap yes [ 8616.109366] entry offset 486146048, bytes 4096, bitmap no [ 8616.109371] entry offset 487411712, bytes 8192, bitmap no [ 8616.109376] block group has cluster?: no [ 8616.109380] 3 blocks of free space at or bigger than bytes is [ 8616.109386] block group 591659008 has 374865920 bytes, 348446720 used 12288 pinned 0 reserved [ 8616.109393] entry offset 591659008, bytes 528384, bitmap yes [ 8616.109398] entry offset 725876736, bytes 675840, bitmap yes [ 8616.109404] entry offset 860094464, bytes 208896, bitmap yes [ 8616.109408] block group has cluster?: no [ 8616.109413] 3 blocks of free space at or bigger than bytes is [ 8616.109419] block group 966524928 has 374865920 bytes, 350523392 used 16384 pinned 0 reserved [ 8616.109426] entry offset 966524928, bytes 397312, bitmap yes [ 8616.109431] entry offset 973578240, bytes 8192, bitmap no [ 8616.109436] entry offset 976687104, bytes 8192, bitmap no [ 8616.109442] entry offset 1100742656, bytes 675840, bitmap yes [ 8616.109447] entry offset 1196097536, bytes 4096, bitmap no [ 8616.109453] entry offset 1234960384, bytes 421888, bitmap yes [ 8616.109458] entry offset 1236443136, bytes 4096, bitmap no [ 8616.109462] block group has cluster?: no [ 8616.109467] 3 blocks of free space at or bigger than bytes is [ 8616.109473] block group 1341390848 has 374865920 bytes, 368312320 used 102400 pinned 0 reserved [ 8616.109480] entry offset 1341390848, bytes 991232, bitmap yes [ 8616.109485] entry offset 1343913984, bytes 4096, bitmap no [ 8616.109490] entry offset 1353039872, bytes 4096, bitmap no [ 8616.109496] entry offset 1475604480, bytes 4096, bitmap no [ 8616.109501] entry offset 1475608576, bytes 1343488, bitmap yes [ 8616.109507] entry offset 1477107712, bytes 4096, bitmap no [ 8616.109512] entry offset 1609826304, bytes 1236992, bitmap yes [ 8616.109518] entry offset 1688391680, bytes 8192, bitmap no [ 8616.109523] entry offset 1692372992, bytes 4096, bitmap no [ 8616.109527] block group has cluster?: no and so on. Unfortunately those messages filled the dmesg buffer, so I don't have other info to provide. The BUG lines were at the end. My btrfs filesystems are mounted like this: /dev/mapper/root on / type btrfs (rw,noatime,ssd) /dev/mapper/home on /home type btrfs (rw,noatime,ssd) Relevant part of dmesg after a clean boot: [ 5.605844] device fsid 3f4f59f00ccebb53-21bc027c519339ad devid 1 transid 49814 /dev/mapper/root [ 5.625868] btrfs: disk space caching is enabled [ 12.612095] btrfs: use ssd allocation scheme [ 12.911580] btrfs: use ssd allocation scheme [ 13.077979] btrfs: unlinked 1 orphans [ 13.077985] btrfs: truncated 3 orphans [ 13.191858] device fsid 1c45fb67134eb006-bad591586362b7b1 devid 1 transid 9938 /dev/mapper/home [ 13.193316] btrfs: use ssd allocation scheme [ 13.211713] btrfs: disk space caching is enabled Please let me know if you need more details. Regards, Fabio -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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