Ceph » Linux kernel client

commit:4f62174bf07425d9d815652e078bed73397a5f00

workunits/misc/trivial_sync.sh on sepia
doesn't trigger under uml

[  334.461043] BUG: unable to handle kernel NULL pointer dereference at 0000000000000140
[  334.461213] IP: [<ffffffff81159580>] __dentry_open+0xb0/0x310
[  334.461320] PGD 37adc067 PUD 37ac2067 PMD 0 
[  334.461427] Oops: 0000 [#1] SMP 
[  334.461506] last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
[  334.461622] CPU 0 
[  334.461662] Modules linked in: cryptd aes_x86_64 aes_generic ceph libceph radeon ttm drm_kms_helper drm i3000_edac edac_core i2c_algo_bit serio_raw ppdev shpchp parport_pc lp parport btrfs ahci zlib_deflate libahci e1000e floppy crc32c libcrc32c
[  334.462427] 
[  334.462465] Pid: 1149, comm: trivial_sync.sh Not tainted 2.6.39-ceph-00042-g4f62174 #1 Supermicro PDSMi/PDSMi+
[  334.462655] RIP: 0010:[<ffffffff81159580>]  [<ffffffff81159580>] __dentry_open+0xb0/0x310
[  334.462801] RSP: 0018:ffff8801042bfb08  EFLAGS: 00010246
[  334.462884] RAX: 000000000000001d RBX: ffff880104327480 RCX: 0000000000000001
[  334.462989] RDX: 0000000000000000 RSI: ffff880037b2f300 RDI: ffff8800d9727c00
[  334.463093] RBP: ffff8801042bfb58 R08: ffff88010347d780 R09: 0000000000000001
[  334.463198] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8800d9727c00
[  334.463302] R13: ffff880037b2f300 R14: ffffffffa0326d50 R15: 0000000000000000
[  334.463407] FS:  0000000000000000(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000
[  334.463530] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  334.463615] CR2: 0000000000000140 CR3: 00000000cf83a000 CR4: 00000000000006f0
[  334.463720] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  334.463824] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  334.463929] Process trivial_sync.sh (pid: 1149, threadinfo ffff8801042be000, task ffff880109fc16c0)
[  334.464070] Stack:
[  334.464111]  0000000000000001 ffff880109fc16c0 ffffffff81058d80 ffff88010347d780
[  334.464272]  dead000000200200 ffff8800d9727c00 ffff8800d9727c5c ffff880104327480
[  334.464434]  ffff8801042bfe38 ffff88010347d780 ffff8801042bfba8 ffffffff81159985
[  334.464596] Call Trace:
[  334.464641]  [<ffffffff81058d80>] ? try_to_wake_up+0x410/0x410
[  334.464730]  [<ffffffff81159985>] lookup_instantiate_filp+0x95/0xd0
[  334.464842]  [<ffffffffa0326d50>] ? ceph_init_file+0x190/0x190 [ceph]
[  334.464942]  [<ffffffffa0326ac4>] ceph_lookup_open+0x114/0x210 [ceph]
[  334.465042]  [<ffffffffa032498e>] ceph_lookup+0x1ee/0x360 [ceph]
[  334.465137]  [<ffffffff81165c05>] d_alloc_and_lookup+0x45/0x90
[  334.465226]  [<ffffffff81171395>] ? d_lookup+0x35/0x60
[  334.465304]  [<ffffffff8116772f>] do_lookup+0xcf/0x2b0
[  334.465382]  [<ffffffff81168fe6>] ? link_path_walk+0x236/0x980
[  334.465470]  [<ffffffff8116862c>] do_last+0x10c/0x890
[  334.465546]  [<ffffffff811698bd>] path_openat+0xcd/0x3e0
[  334.465630]  [<ffffffff81169ce9>] do_filp_open+0x49/0xa0
[  334.465715]  [<ffffffff8117732a>] ? alloc_fd+0x10a/0x150
[  334.465799]  [<ffffffff8115aa24>] do_sys_open+0x104/0x1e0
[  334.465886]  [<ffffffff8115ab40>] sys_open+0x20/0x30
[  334.465973]  [<ffffffff815bdd42>] system_call_fastpath+0x16/0x1b
[  334.471033] Code: 45 c0 48 63 d8 48 89 d8 4c 8b 65 e0 48 8b 5d d8 4c 8b 6d e8 4c 8b 75 f0 4c 8b 7d f8 c9 c3 c7 43 3c 00 40 00 00 4c 8b 7f 30 66 90 
[  334.471033]  8b 87 40 01 00 00 4c 89 63 18 48 89 df 4c 89 6b 10 48 c7 43 
[  334.471033] RIP  [<ffffffff81159580>] __dentry_open+0xb0/0x310
[  334.471033]  RSP <ffff8801042bfb08>
[  334.471033] CR2: 0000000000000140
[  334.505753] ---[ end trace 90c7cfcc21ad8a19 ]---