On Di 1.Feb'11 at 16:25:11 -0600, cwillu wrote: > On Tue, Feb 1, 2011 at 3:51 PM, Carlos R. Mafra <crmaf...@gmail.com> wrote: > > > > I am running 2.6.37 plus the revert of bf9dc102e284 (which is related to > > drm). > > > > My /home is on btrfs as well as a 1TB external USB hard-disk. > > > > I was compiling 2.6.38-rc3 from /home/mafra/linux2.6 using > > the external hd as the destination of the compiled files: > > > > make -j4 O=/mnt/wd/kernel-compile > > > > So after some time I got this bug and I was dropped out of X > > > > [ 2730.943101] BUG: unable to handle kernel NULL pointer dereference at > > 0000000000000030 > > [ 2730.943159] IP: [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > > [ 2730.943217] PGD 2248f067 PUD 5adc8067 PMD 0 > > [ 2730.943256] Oops: 0000 [#1] SMP > > [ 2730.943285] last sysfs file: > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq > > [ 2730.943331] CPU 0 > > [ 2730.943346] Modules linked in: ppp_deflate ppp_async ppp_generic slhc > > snd_seq snd_seq_device vfat fat option usb_wwan usbserial snd_hda_codec_idt > > snd_hda_intel iwlagn snd_hda_codec sky2 uvcvideo i2c_i801 snd_hwdep evdev > > [ 2730.943526] > > [ 2730.943541] Pid: 15437, comm: as Not tainted > > 2.6.37-xrandr-00001-g1d95a75 #16 VAIO/VGN-FZ240E > > [ 2730.943581] RIP: 0010:[<ffffffff811ba3e5>] [<ffffffff811ba3e5>] > > btrfs_print_leaf+0x25/0x820 > > [ 2730.943629] RSP: 0000:ffff88005a771ad8 EFLAGS: 00010287 > > [ 2730.943661] RAX: 00000000fffffffb RBX: ffff88005b048d90 RCX: > > ffff880037f49d38 > > [ 2730.943695] RDX: 0000000000000000 RSI: 0000000000000000 RDI: > > ffff88004d456000 > > [ 2730.943729] RBP: ffff88005a771b58 R08: 00000000fffffffb R09: > > 0000000000000000 > > [ 2730.943763] R10: 0000000000000001 R11: 00000000ffffffff R12: > > 0000000000000005 > > [ 2730.943797] R13: ffff88005a771fd8 R14: 0000000000000000 R15: > > 0000000000000000 > > [ 2730.943831] FS: 00002b01b9f88000(0000) GS:ffff88007f400000(0000) > > knlGS:0000000000000000 > > [ 2730.943872] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > [ 2730.943901] CR2: 0000000000000030 CR3: 000000006161c000 CR4: > > 00000000000006f0 > > [ 2730.943934] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > > 0000000000000000 > > [ 2730.943968] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > > 0000000000000400 > > [ 2730.944002] Process as (pid: 15437, threadinfo ffff88005a770000, task > > ffff88002ffea680) > > [ 2730.944009] Stack: > > [ 2730.944009] 0000001cc7d27000 ffffffff811e4724 ffff88004d456000 > > 0000001cc7784000 > > [ 2730.944009] ffff88005a771b58 ffff88005b048d90 0000001cc7d27000 > > 00000000005000a8 > > [ 2730.944009] ffff8800491a0e00 ffff88006c2de6c0 0000000000000005 > > ffff88005b048d90 > > [ 2730.944009] Call Trace: > > [ 2730.944009] [<ffffffff811e4724>] ? set_extent_dirty+0x24/0x30 > > [ 2730.944009] [<ffffffff811b30dd>] __btrfs_free_extent+0x61d/0x6e0 > > [ 2730.944009] [<ffffffff811b635b>] run_clustered_refs+0x1fb/0x810 > > [ 2730.944009] [<ffffffff811e7bda>] ? set_extent_buffer_dirty+0x4a/0xa0 > > [ 2730.944009] [<ffffffff811c342f>] ? btrfs_mark_buffer_dirty+0xaf/0x130 > > [ 2730.944009] [<ffffffff81201100>] ? btrfs_find_ref_cluster+0x60/0x190 > > [ 2730.944009] [<ffffffff811b6a30>] btrfs_run_delayed_refs+0xc0/0x210 > > [ 2730.944009] [<ffffffff811c55b8>] __btrfs_end_transaction+0x68/0x240 > > [ 2730.944009] [<ffffffff811c57d0>] btrfs_end_transaction+0x10/0x20 > > [ 2730.944009] [<ffffffff811ced57>] btrfs_evict_inode+0x1c7/0x1e0 > > [ 2730.944009] [<ffffffff810fa8c2>] evict+0x22/0xb0 > > [ 2730.944009] [<ffffffff810fb141>] iput+0x1b1/0x290 > > [ 2730.944009] [<ffffffff810f14f5>] do_unlinkat+0x115/0x1c0 > > [ 2730.944009] [<ffffffff810e94ae>] ? sys_newlstat+0x2e/0x40 > > [ 2730.944009] [<ffffffff810f2af1>] sys_unlink+0x11/0x20 > > [ 2730.944009] [<ffffffff81002cfb>] system_call_fastpath+0x16/0x1b > > [ 2730.944009] Code: 84 00 00 00 00 00 55 48 89 e5 48 83 c4 80 48 89 5d d8 > > 4c 89 6d e8 4c 89 65 e0 4c 89 75 f0 4c 89 7d f8 65 4c 8b 2c 25 88 b5 00 00 > > <48> 8b 46 30 49 81 ed d8 1f 00 00 48 89 f3 41 ff 45 1c 48 ba 00 > > [ 2730.944009] RIP [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > > [ 2730.944009] RSP <ffff88005a771ad8> > > [ 2730.944009] CR2: 0000000000000030 > > [ 2730.950886] ---[ end trace 3c2d14569018819f ]--- > > [ 2731.229129] BUG: unable to handle kernel NULL pointer dereference at > > 0000000000000030 > > [ 2731.230010] IP: [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > > [ 2731.230010] PGD 22623067 PUD 2278d067 PMD 0 > > [ 2731.230010] Oops: 0000 [#2] SMP > > [ 2731.230010] last sysfs file: > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq > > [ 2731.230010] CPU 1 > > [ 2731.230010] Modules linked in: ppp_deflate ppp_async ppp_generic slhc > > snd_seq snd_seq_device vfat fat option usb_wwan usbserial snd_hda_codec_idt > > snd_hda_intel iwlagn snd_hda_codec sky2 uvcvideo i2c_i801 snd_hwdep evdev > > [ 2731.230010] > > [ 2731.230010] Pid: 15444, comm: as Tainted: G D > > 2.6.37-xrandr-00001-g1d95a75 #16 VAIO/VGN-FZ240E > > [ 2731.230010] RIP: 0010:[<ffffffff811ba3e5>] [<ffffffff811ba3e5>] > > btrfs_print_leaf+0x25/0x820 > > [ 2731.230010] RSP: 0000:ffff88004d42dad8 EFLAGS: 00010287 > > [ 2731.230010] RAX: 00000000fffffffb RBX: ffff88005b048b50 RCX: > > ffff880037f49d38 > > [ 2731.230010] RDX: 0000000000000000 RSI: 0000000000000000 RDI: > > ffff88004d456000 > > [ 2731.230010] RBP: ffff88004d42db58 R08: 00000000fffffffb R09: > > 0000000000000000 > > [ 2731.230010] R10: 0000000000000001 R11: 00000000ffffffff R12: > > 0000000000000005 > > [ 2731.230010] R13: ffff88004d42dfd8 R14: 0000000000000000 R15: > > 0000000000000000 > > [ 2731.230010] FS: 00002aac5cec6000(0000) GS:ffff88007f500000(0000) > > knlGS:0000000000000000 > > [ 2731.230010] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > [ 2731.230010] CR2: 0000000000000030 CR3: 00000000226af000 CR4: > > 00000000000006e0 > > [ 2731.230010] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > > 0000000000000000 > > [ 2731.230010] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > > 0000000000000400 > > [ 2731.230010] Process as (pid: 15444, threadinfo ffff88004d42c000, task > > ffff88007b69e280) > > [ 2731.230010] Stack: > > [ 2731.230010] 0000001cc7d2c000 ffffffff811dd7c5 ffff88004d456000 > > ffff8800218b8898 > > [ 2731.230010] ffff88004d42dba8 ffff88005b048b50 0000001cc7d2c000 > > 00000000005000a8 > > [ 2731.230010] ffff88004d42db00 ffff88005a5e5cc0 0000000000000005 > > ffff88005b048b50 > > [ 2731.230010] Call Trace: > > [ 2731.230010] [<ffffffff811dd7c5>] ? btrfs_key_generation+0xe5/0xf0 > > [ 2731.230010] [<ffffffff811b30dd>] __btrfs_free_extent+0x61d/0x6e0 > > [ 2731.230010] [<ffffffff811e7bda>] ? set_extent_buffer_dirty+0x4a/0xa0 > > [ 2731.230010] [<ffffffff811c342f>] ? btrfs_mark_buffer_dirty+0xaf/0x130 > > [ 2731.230010] [<ffffffff811b635b>] run_clustered_refs+0x1fb/0x810 > > [ 2731.230010] [<ffffffff81201100>] ? btrfs_find_ref_cluster+0x60/0x190 > > [ 2731.230010] [<ffffffff811b6a30>] btrfs_run_delayed_refs+0xc0/0x210 > > [ 2731.230010] [<ffffffff811c55b8>] __btrfs_end_transaction+0x68/0x240 > > [ 2731.230010] [<ffffffff811c57d0>] btrfs_end_transaction+0x10/0x20 > > [ 2731.230010] [<ffffffff811ced1f>] btrfs_evict_inode+0x18f/0x1e0 > > [ 2731.230010] [<ffffffff810fa8c2>] evict+0x22/0xb0 > > [ 2731.230010] [<ffffffff810fb141>] iput+0x1b1/0x290 > > [ 2731.230010] [<ffffffff810f14f5>] do_unlinkat+0x115/0x1c0 > > [ 2731.230010] [<ffffffff810e94ae>] ? sys_newlstat+0x2e/0x40 > > [ 2731.230010] [<ffffffff810f2af1>] sys_unlink+0x11/0x20 > > [ 2731.230010] [<ffffffff81002cfb>] system_call_fastpath+0x16/0x1b > > [ 2731.230010] Code: 84 00 00 00 00 00 55 48 89 e5 48 83 c4 80 48 89 5d d8 > > 4c 89 6d e8 4c 89 65 e0 4c 89 75 f0 4c 89 7d f8 65 4c 8b 2c 25 88 b5 00 00 > > <48> 8b 46 30 49 81 ed d8 1f 00 00 48 89 f3 41 ff 45 1c 48 ba 00 > > [ 2731.230010] RIP [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > > [ 2731.230010] RSP <ffff88004d42dad8> > > [ 2731.230010] CR2: 0000000000000030 > > [ 2731.304076] ---[ end trace 3c2d1456901881a0 ]--- > > [ 2731.778512] BUG: unable to handle kernel NULL pointer dereference at > > 0000000000000030 > > [ 2731.779007] IP: [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > > [ 2731.779007] PGD 2ffa8067 PUD 5a93d067 PMD 0 > > [ 2731.779007] Oops: 0000 [#3] SMP > > [ 2731.779007] last sysfs file: > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq > > [ 2731.779007] CPU 0 > > [ 2731.779007] Modules linked in: ppp_deflate ppp_async ppp_generic slhc > > snd_seq snd_seq_device vfat fat option usb_wwan usbserial snd_hda_codec_idt > > snd_hda_intel iwlagn snd_hda_codec sky2 uvcvideo i2c_i801 snd_hwdep evdev > > [ 2731.779007] > > [ 2731.779007] Pid: 15448, comm: as Tainted: G D > > 2.6.37-xrandr-00001-g1d95a75 #16 VAIO/VGN-FZ240E > > [ 2731.779007] RIP: 0010:[<ffffffff811ba3e5>] [<ffffffff811ba3e5>] > > btrfs_print_leaf+0x25/0x820 > > [ 2731.779007] RSP: 0018:ffff8800227c5ad8 EFLAGS: 00010287 > > [ 2731.779007] RAX: 00000000fffffffb RBX: ffff88005b048c70 RCX: > > ffff880021f9fd38 > > [ 2731.779007] RDX: 0000000000000000 RSI: 0000000000000000 RDI: > > ffff88004d456000 > > [ 2731.779007] RBP: ffff8800227c5b58 R08: 00000000fffffffb R09: > > 0000000000000000 > > [ 2731.779007] R10: 0000000000000001 R11: 00000000ffffffff R12: > > 0000000000000005 > > [ 2731.779007] R13: ffff8800227c5fd8 R14: 0000000000000000 R15: > > 0000000000000000 > > [ 2731.779007] FS: 00002b0f18c8e000(0000) GS:ffff88007f400000(0000) > > knlGS:0000000000000000 > > [ 2731.779007] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > [ 2731.779007] CR2: 0000000000000030 CR3: 000000006c0b5000 CR4: > > 00000000000006f0 > > [ 2731.779007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > > 0000000000000000 > > [ 2731.779007] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > > 0000000000000400 > > [ 2731.779007] Process as (pid: 15448, threadinfo ffff8800227c4000, task > > ffff88003acfc5c0) > > [ 2731.779007] Stack: > > [ 2731.779007] 0000001cc7d3c000 ffffffff811dd7c5 ffff88004d456000 > > ffff8800218b21f0 > > [ 2731.779007] ffff8800227c5ba8 ffff88005b048c70 0000001cc7d3c000 > > 00000000005000a8 > > [ 2731.779007] ffff8800227c5b00 ffff88007229ea40 0000000000000005 > > ffff88005b048c70 > > [ 2731.779007] Call Trace: > > [ 2731.779007] [<ffffffff811dd7c5>] ? btrfs_key_generation+0xe5/0xf0 > > [ 2731.779007] [<ffffffff811b30dd>] __btrfs_free_extent+0x61d/0x6e0 > > [ 2731.779007] [<ffffffff811dd9b4>] ? btrfs_item_offset+0xe4/0xf0 > > [ 2731.779007] [<ffffffff811b635b>] run_clustered_refs+0x1fb/0x810 > > [ 2731.779007] [<ffffffff811e7bda>] ? set_extent_buffer_dirty+0x4a/0xa0 > > [ 2731.779007] [<ffffffff811c342f>] ? btrfs_mark_buffer_dirty+0xaf/0x130 > > [ 2731.779007] [<ffffffff81201100>] ? btrfs_find_ref_cluster+0x60/0x190 > > [ 2731.779007] [<ffffffff811b6a30>] btrfs_run_delayed_refs+0xc0/0x210 > > [ 2731.779007] [<ffffffff811c55b8>] __btrfs_end_transaction+0x68/0x240 > > [ 2731.779007] [<ffffffff811c57d0>] btrfs_end_transaction+0x10/0x20 > > [ 2731.779007] [<ffffffff811ced57>] btrfs_evict_inode+0x1c7/0x1e0 > > [ 2731.779007] [<ffffffff810fa8c2>] evict+0x22/0xb0 > > [ 2731.779007] [<ffffffff810fb141>] iput+0x1b1/0x290 > > [ 2731.779007] [<ffffffff810f14f5>] do_unlinkat+0x115/0x1c0 > > [ 2731.779007] [<ffffffff810e94ae>] ? sys_newlstat+0x2e/0x40 > > [ 2731.779007] [<ffffffff810f2af1>] sys_unlink+0x11/0x20 > > [ 2731.779007] [<ffffffff81002cfb>] system_call_fastpath+0x16/0x1b > > [ 2731.779007] Code: 84 00 00 00 00 00 55 48 89 e5 48 83 c4 80 48 89 5d d8 > > 4c 89 6d e8 4c 89 65 e0 4c 89 75 f0 4c 89 7d f8 65 4c 8b 2c 25 88 b5 00 00 > > <48> 8b 46 30 49 81 ed d8 1f 00 00 48 89 f3 41 ff 45 1c 48 ba 00 > > [ 2731.779007] RIP [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > > [ 2731.779007] RSP <ffff8800227c5ad8> > > [ 2731.779007] CR2: 0000000000000030 > > [ 2731.855520] ---[ end trace 3c2d1456901881a1 ]--- > > [ 2732.101887] btrfs csum failed ino 244904 extent 124692799488 csum > > 4201110721 wanted 126609361 mirror 0 > > [ 2732.102064] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102084] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102102] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102121] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102139] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102158] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102176] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102195] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102213] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102231] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.102250] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2732.103048] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 0 > > [ 2732.103086] btrfs csum failed ino 244904 extent 124692799488 csum > > 2566472073 wanted 126609361 mirror 1 > > [ 2738.344564] btrfs csum failed ino 244835 extent 124686446592 csum > > 4201110721 wanted 3023272677 mirror 0 > > [ 2738.344662] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344683] btrfs csum failed ino 244835 extent 124686446592 csum > > 4201110721 wanted 3023272677 mirror 1 > > [ 2738.344702] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344729] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344748] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344752] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344768] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344772] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344792] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344823] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344843] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344862] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > [ 2738.344884] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 0 > > [ 2738.344932] btrfs csum failed ino 244835 extent 124686446592 csum > > 2566472073 wanted 3023272677 mirror 1 > > > > > > Is this problem already known? > > Was there anything else before the first bug in dmesg? I would > predict there to have been some additional debugging info, and > probably a USB device disconnect or similar.
Thanks a lot, cwillu! Indeed there were USB-related errors a bit before the BUG. I thought they were related to the usb surfstick I was using, which was quite unstable and disconnecting. [ 2725.465125] usb 2-2: reset high speed USB device using ehci_hcd and address 23 [ 2725.589040] usb 2-2: device descriptor read/64, error -71 [ 2725.964048] usb 2-2: device descriptor read/64, error -71 [ 2726.167037] usb 2-2: reset high speed USB device using ehci_hcd and address 23 [ 2726.680029] usb 2-2: device not accepting address 23, error -71 [ 2726.782042] usb 2-2: reset high speed USB device using ehci_hcd and address 23 [ 2727.192028] usb 2-2: device not accepting address 23, error -71 [ 2727.294050] usb 2-2: reset high speed USB device using ehci_hcd and address 23 [ 2727.704034] usb 2-2: device not accepting address 23, error -71 [ 2727.704074] usb 2-2: USB disconnect, address 23 [ 2727.704120] sd 18:0:0:0: [sdc] Unhandled error code [ 2727.704123] sd 18:0:0:0: [sdc] Result: hostbyte=0x07 driverbyte=0x00 [ 2727.704126] sd 18:0:0:0: [sdc] CDB: cdb[0]=0x2a: 2a 00 18 db 83 a0 00 00 20 00 [ 2727.704135] end_request: I/O error, dev sdc, sector 417039264 [ 2727.704154] sd 18:0:0:0: [sdc] Unhandled error code [ 2727.704156] sd 18:0:0:0: [sdc] Result: hostbyte=0x01 driverbyte=0x00 [ 2727.704159] sd 18:0:0:0: [sdc] CDB: cdb[0]=0x2a: 2a 00 18 db 83 c0 00 00 38 00 [ 2727.704167] end_request: I/O error, dev sdc, sector 417039296 [ 2727.812050] usb 2-2: new high speed USB device using ehci_hcd and address 24 [ 2727.926040] usb 2-2: device descriptor read/64, error -71 [ 2728.154579] scsi19 : usb-storage 2-2:1.0 [ 2729.167448] scsi 19:0:0:0: Direct-Access WD Elements 1023 2005 PQ: 0 ANSI: 4 [ 2729.167769] sd 19:0:0:0: Attached scsi generic sg4 type 0 [ 2729.169305] sd 19:0:0:0: [sdd] 1953519616 512-byte logical blocks: (1.00 TB/931 GiB) [ 2729.170174] sd 19:0:0:0: [sdd] Test WP failed, assume Write Enabled [ 2729.170179] sd 19:0:0:0: [sdd] Assuming drive cache: write through [ 2729.171920] sd 19:0:0:0: [sdd] Test WP failed, assume Write Enabled [ 2729.171923] sd 19:0:0:0: [sdd] Assuming drive cache: write through [ 2729.200964] sdd: sdd1 [ 2729.203180] sd 19:0:0:0: [sdd] Test WP failed, assume Write Enabled [ 2729.203185] sd 19:0:0:0: [sdd] Assuming drive cache: write through [ 2729.203189] sd 19:0:0:0: [sdd] Attached SCSI disk [ 2730.943101] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [ 2730.943159] IP: [<ffffffff811ba3e5>] btrfs_print_leaf+0x25/0x820 > If I'm correct, there was an io error while writing to the external > device, which as of 2.6.37 isn't handled terribly well (and errors in > general; in that sense, it's known). Ok, now I am moving to 2.6.38-rc3 and I'll pay attention to usb failures before reporting anything. Thanks again! -- 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
