[Bug runtime/10516] New: on rawhide, getting a warning about bad percpu allocation

["dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

When the testsuite is run on a rawhide system (kernel
2.6.31-0.125.rc5.git2.fc12.x86_64), the following warning is seen:

----
Aug 13 09:45:30 dhcp-148 kernel: WARNING: at mm/percpu.c:786
pcpu_alloc+0x62/0x460() (Tainted: G        W )
Aug 13 09:45:30 dhcp-148 kernel: Hardware name: 
Aug 13 09:45:30 dhcp-148 kernel: illegal size (72720) or align (8) for percpu
allocation
Aug 13 09:45:30 dhcp-148 kernel: Modules linked in:
stap_06dc35dbd9c286e66fb95316e6b847b0_712048 onoffprobe uprobes autofs4 nfs
lockd fscache nfs_acl auth_rpcgss sunrpc ip6t_REJECT nf_conntrack_ipv6
ip6table_filter ip6_tables ipv6 dm_multipath uinput i2c_piix4 8139too 8139cp mii
virtio_balloon floppy i2c_core virtio_pci virtio_ring virtio ata_generic
pata_acpi [last unloaded: stap_b5f2d0fe68a55a18a7db86e374c3f43f_824]
Aug 13 09:45:30 dhcp-148 kernel: Pid: 3369, comm: stapio Tainted: G        W 
2.6.31-0.125.rc5.git2.0.hsv.1.fc12.x86_64 #1
Aug 13 09:45:30 dhcp-148 kernel: Call Trace:
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81064d5b>] warn_slowpath_common+0x95/0xc3
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81064e16>] warn_slowpath_fmt+0x50/0x66
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff8113b70d>] pcpu_alloc+0x62/0x460
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81009000>] ? _stext+0x0/0x1032
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff8113bb6a>] __alloc_percpu+0x23/0x39
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffffa02c5139>]
_stp_ctl_write_cmd+0x1a6/0x7c2 [stap_06dc35dbd9c286e66fb95316e6b847b0_712048]
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff8122e43a>] ? file_has_perm+0x92/0xb1
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff8122e839>] ?
selinux_file_permission+0x69/0x86
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81223f80>] ?
security_file_permission+0x29/0x3f
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81141f1d>] vfs_write+0xbd/0x12e
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81143187>] ? fget_light+0x63/0xfd
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff814feeea>] kretprobe_trampoline+0x0/0x60
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff814fa317>] ? thread_return+0x4e/0xd3
Aug 13 09:45:30 dhcp-148 kernel: [<ffffffff81012f42>] system_call_fastpath+0x16/0x1b
Aug 13 09:45:30 dhcp-148 kernel: ---[ end trace 39a02225aeaa1558 ]---
----

It appears that the request size is too large.

-- 
           Summary: on rawhide, getting a warning about bad percpu
                    allocation
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: dsmith at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10516

------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.