BUG: spinlock recursion on CPU
From Linux NFS
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Latest revision as of 18:39, 29 July 2011
About
- Kernel version: 2.6.38-rc1
- Bug 27022
- Reported by: Santosh Shilimkar (January 10, 2011) (linux-kernel@vger.kernel.org)
- Reported by: Maciej Rutecki (January 18, 2011) (bugzilla)
- Reported fixed by: Nick Piggin (January 19, 2011)
- Closed by: Florian Mickler (March 27, 2011)
Symptoms
- Rootfs mounted on NFS
VFS: Mounted root (nfs filesystem) on device 0:13. Freeing init memory: 296K BUG: spinlock recursion on CPU#0, init/1 lock: ef5a1e0c, .magic: dead4ead, .owner: init/1, .owner_cpu: 0 [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024ce90>] (do_raw_spin_lock+0x48/0x158) [<c024ce90>] (do_raw_spin_lock+0x48/0x158) from [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>] (d_revalidate+0x30/0x58) [<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>] (link_path_walk+0xb44/0xb64) [<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>] (do_path_lookup+0x44/0xcc) [<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>] (do_filp_open+0xc8/0x56c) [<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>] (do_sys_open+0x58/0xe4) [<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>] (ret_fast_syscall+0x0/0x3c) BUG: spinlock lockup on CPU#0, init/1, ef5a1e0c [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>] (d_revalidate+0x30/0x58) [<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>] (link_path_walk+0xb44/0xb64) [<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>] (do_path_lookup+0x44/0xcc) [<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>] (do_filp_open+0xc8/0x56c) [<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>] (do_sys_open+0x58/0xe4) [<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>] (ret_fast_syscall+0x0/0x3c) BUG: spinlock lockup on CPU#1, kworker/u:2/499, c05d3c80 [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c014afac>] (exit_fs+0x2c/0x84) [<c014afac>] (exit_fs+0x2c/0x84) from [<c0098274>] (do_exit+0x254/0x674) [<c0098274>] (do_exit+0x254/0x674) from [<c00b0944>] (kthread+0x88/0x8c) [<c00b0944>] (kthread+0x88/0x8c) from [<c005d490>] (kernel_thread_exit+0x0/0x8)
