[Bugme-new] [Bug 12552] New: held lock freed in tcp

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Tue Jan 27 09:59:06 PST 2009


http://bugzilla.kernel.org/show_bug.cgi?id=12552

           Summary: held lock freed in tcp
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.29-rc2-wl-11979-gc32422d-dirty
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: IPV4
        AssignedTo: shemminger at linux-foundation.org
        ReportedBy: johannes at sipsolutions.net


Latest working kernel version: ?
Earliest failing kernel version: ?
Distribution: debian/unstable
Hardware Environment: macbook5,1
Software Environment:
Problem Description:

Steps to reproduce:

Not always reproducible, I was running iperf against a peer that suddenly lost
its link due to another bug...

[  598.850133] 
[  598.850136] =========================
[  598.850141] [ BUG: held lock freed! ]
[  598.850143] -------------------------
[  598.850147] swapper/0 is freeing memory ffff88007a389300-ffff88007a389c07,
with a lock still held there!
[  598.850151]  (&icsk->icsk_retransmit_timer){-+..}, at: [<ffffffff80252080>]
run_timer_softirq+0x110/0x290
[  598.850163] 1 lock held by swapper/0:
[  598.850165]  #0:  (&icsk->icsk_retransmit_timer){-+..}, at:
[<ffffffff80252080>] run_timer_softirq+0x110/0x290
[  598.850173] 
[  598.850174] stack backtrace:
[  598.850178] Pid: 0, comm: swapper Not tainted
2.6.29-rc2-wl-11979-gc32422d-dirty #24
[  598.850180] Call Trace:
[  598.850183]  <IRQ>  [<ffffffff8027111f>] print_freed_lock_bug+0xbf/0xd0
[  598.850193]  [<ffffffff80272d34>] debug_check_no_locks_freed+0x74/0xc0
[  598.850199]  [<ffffffff802d78aa>] kmem_cache_free+0x7a/0xf0
[  598.850206]  [<ffffffff8053a4a0>] ? tcp_write_timer+0x0/0x220
[  598.850211]  [<ffffffff804e7206>] sk_free+0x86/0x100
[  598.850215]  [<ffffffff8053a550>] tcp_write_timer+0xb0/0x220
[  598.850219]  [<ffffffff8025210a>] run_timer_softirq+0x19a/0x290
[  598.850223]  [<ffffffff80252080>] ? run_timer_softirq+0x110/0x290
[  598.850228]  [<ffffffff8024d51d>] __do_softirq+0x9d/0x190
[  598.850234]  [<ffffffff8020cebc>] call_softirq+0x1c/0x40
[  598.850238]  [<ffffffff8020e1a5>] do_softirq+0x75/0xc0
[  598.850242]  [<ffffffff8024d025>] irq_exit+0x85/0xb0
[  598.850246]  [<ffffffff8020e441>] do_IRQ+0xa1/0x150
[  598.850250]  [<ffffffff8020c6d3>] ret_from_intr+0x0/0xf


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