System rebooted after a series of soft lockup messages containing openafs call traces.

Solution Unverified - Updated -

Issue

  • System rebooted after a series of soft lockup messages containing openafs call traces.
kernel: BUG: soft lockup - CPU#29 stuck for 60s! [pwd:3278458]

kernel: 
kernel: Call Trace:
kernel:  [<ffffffff800505f3>] d_find_alias+0x1c/0x38
kernel:  [<ffffffff884e26ec>] :openafs:afs_linux_lookup+0x1ba/0x234
kernel:  [<ffffffff8000d0c4>] do_lookup+0xe5/0x1e6 
kernel:  [<ffffffff8000a2cb>] __link_path_walk+0xa2a/0xfb9
kernel:  [<ffffffff8000eb30>] link_path_walk+0x42/0xb2
kernel:  [<ffffffff8000ce5f>] do_path_lookup+0x275/0x2f1
kernel:  [<ffffffff80023af4>] __user_walk_fd+0x37/0x4c
kernel:  [<ffffffff8003f4f8>] vfs_lstat_fd+0x18/0x47
kernel:  [<ffffffff800e87c1>] sys_newfstatat+0x22/0x43
kernel:  [<ffffffff8005d229>] tracesys+0x71/0xe0
kernel:  [<ffffffff8005d28d>] tracesys+0xd5/0xe0

kernel: BUG: soft lockup - CPU#29 stuck for 60s! [pwd:3278458]

kernel: Call Trace:
kernel:  [<ffffffff80064a48>] _spin_lock+0x3/0xa
kernel:  [<ffffffff8000d567>] dput+0x2c/0x114
kernel:  [<ffffffff884e274f>] :openafs:afs_linux_lookup+0x21d/0x234
kernel:  [<ffffffff8000d0c4>] do_lookup+0xe5/0x1e6 
kernel:  [<ffffffff8000a2cb>] __link_path_walk+0xa2a/0xfb9
kernel:  [<ffffffff8000eb30>] link_path_walk+0x42/0xb2
kernel:  [<ffffffff8000ce5f>] do_path_lookup+0x275/0x2f1
kernel:  [<ffffffff80023af4>] __user_walk_fd+0x37/0x4c
kernel:  [<ffffffff8003f4f8>] vfs_lstat_fd+0x18/0x47
kernel:  [<ffffffff800e87c1>] sys_newfstatat+0x22/0x43
kernel:  [<ffffffff8005d229>] tracesys+0x71/0xe0
kernel:  [<ffffffff8005d28d>] tracesys+0xd5/0xe0

Environment

  • Red Hat Enterprise Linux 5.6
    • kernel 2.6.18-238.12.1.el5

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