Re: [Bugme-new] [Bug 10737] New: pktgen procfs problem

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Sat, 17 May 2008 13:59:25 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=10737

           Summary: pktgen procfs problem
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.26-rc2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: acme@ghostprotocols.net
        ReportedBy: devzero@web.de


Latest working kernel version: n/a
Earliest failing kernel version: 2.6.26-rc2
Distribution: suse 10.1
Hardware Environment: p4 + gigabyte i915g MoBo
Software Environment:
Problem Description:
pktgen module ocaasional seems to leak procfs entry

May 18 00:00:34 test kernel: [ 2663.373955] pktgen v2.69: Packet Generator for
packet performance testing.
May 18 00:00:34 test kernel: [ 2663.384819] remove_proc_entry: removing
non-empty directory 'net/pktgen', leaking at least 'kpktgend_1'

^^

Possibly we were always leaking this procfs entry, and newly-added
procfs diagnostics are now detecting it.

May 18 00:00:34 test kernel: [ 2663.384819] ------------[ cut here
]------------
May 18 00:00:34 test kernel: [ 2663.384819] WARNING: at fs/proc/generic.c:799
remove_proc_entry+0x110/0x12d()
May 18 00:00:34 test kernel: [ 2663.384819] Modules linked in: pktgen(-) ip_gre
lzo lzo_decompress lzo_compress tgr192 cts seed camellia fcrypt anubis cast6
cast5 ccm gcm ctr lrw gf128mul aes_i586 aes_generic blowfish md4 cbc ecb
sha1_generic aead 8250_accent 8250_exar_st16c554 8250_fourport 8250_boca
8250_hub6 ovcamchip i2c_core guillemot adi a3d cobra gameport parkbd
deadline_iosched capifs ar7part mtd eql ide_generic siimage aec62xx trm290
alim15x3 hpt34x hpt366 cmd64x cmd640 piix rz1000 slc90e66 jmicron cs5535 cs5530
cs5520 sc1200 triflex ide_pci_generic atiixp pdc202xx_old pdc202xx_new tc86c001
opti621 ns87415 cy82c693 amd74xx sis5513 via82cxxx serverworks it821x it8213
ide_core eni suni zatm uPD98402 atm non_fatal p4_clockmod speedstep_lib
freq_table decnet crypto_blkcipher sctp libcrc32c sunrpc psmouse ipv6 vboxdrv
mousedev e100 mii intel_agp agpgart usbcore parport_pc parport megaraid_mbox
megaraid_mm sd_mod scsi_mod [last unloaded: ax25]
May 18 00:00:34 test kernel: [ 2663.384819] Pid: 31183, comm: modprobe Tainted:
G        W 2.6.26-rc2-git5 #2
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0122aae>]
warn_on_slowpath+0x41/0x6c
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0135c32>] ? up+0x2b/0x2f
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0122f99>] ?
release_console_sem+0x184/0x18c
May 18 00:00:34 test kernel: [ 2663.384819]  [<c02f5f3e>] ?
schedule_timeout+0x16/0x8b
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0123417>] ? printk+0x15/0x17
May 18 00:00:34 test kernel: [ 2663.384819]  [<c01a9a5a>]
remove_proc_entry+0x110/0x12d
May 18 00:00:34 test kernel: [ 2663.384819]  [<c01ac70b>]
proc_net_remove+0xf/0x11
May 18 00:00:34 test kernel: [ 2663.384819]  [<f8a47be7>] pg_cleanup+0x5f/0x90
[pktgen]
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0140899>]
sys_delete_module+0x18e/0x1d9
May 18 00:00:34 test kernel: [ 2663.384819]  [<c016813d>] ?
remove_vma+0x41/0x47
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0168aa7>] ?
do_munmap+0x17d/0x197
May 18 00:00:34 test kernel: [ 2663.384819]  [<c0103811>]
sysenter_past_esp+0x6a/0x91
May 18 00:00:34 test kernel: [ 2663.384819]  [<c02f0000>] ?
pcibios_setup+0xa8/0x2a0
May 18 00:00:34 test kernel: [ 2663.384819]  =======================
May 18 00:00:34 test kernel: [ 2663.384819] ---[ end trace 4351c3133409518a
]---


Steps to reproduce: not sure yet, but i saw this while doing some module
load/unload  regression test.