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Bug 642905 - include/net/inet_timewait_sock.h:227 invoked rcu_dereference_check() without protection!
Summary: include/net/inet_timewait_sock.h:227 invoked rcu_dereference_check() without ...
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 13
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Neil Horman
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2010-10-14 05:56 UTC by Albert Strasheim
Modified: 2011-06-28 11:37 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-06-28 11:37:23 UTC

Attachments (Terms of Use)

Description Albert Strasheim 2010-10-14 05:56:23 UTC

[ INFO: suspicious rcu_dereference_check() usage. ]
include/net/inet_timewait_sock.h:227 invoked rcu_dereference_check() without protection!

other info that might help us debug this:

rcu_scheduler_active = 1, debug_locks = 0
1 lock held by swapper/0:
 #0:  (net/ipv4/tcp_minisocks.c:41){+.-...}, at: [<ffffffff8105c98d>] run_timer_softirq+0x193/0x2ef

stack backtrace:
Pid: 0, comm: swapper Not tainted #1
Call Trace:
 <IRQ>  [<ffffffff8107b8da>] lockdep_rcu_dereference+0xaa/0xb3
 [<ffffffff8140f0cd>] twsk_net+0x44/0x4c
 [<ffffffff8140f66b>] __inet_twsk_kill+0x7e/0xd5
 [<ffffffff8140fa85>] inet_twdr_do_twkill_work+0x5e/0xbf
 [<ffffffff8140fbd3>] inet_twdr_hangman+0x35/0x9a
 [<ffffffff8105ca1f>] run_timer_softirq+0x225/0x2ef
 [<ffffffff8105c98d>] ? run_timer_softirq+0x193/0x2ef
 [<ffffffff81010395>] ? sched_clock+0x9/0xd
 [<ffffffff8106ffe9>] ? sched_clock_local+0x1c/0x82
 [<ffffffff8140fb9e>] ? inet_twdr_hangman+0x0/0x9a
 [<ffffffff810563e7>] ? __do_softirq+0x76/0x1d7
 [<ffffffff8105646e>] __do_softirq+0xfd/0x1d7
 [<ffffffff8107817d>] ? tick_program_event+0x2a/0x2c
 [<ffffffff8100abdc>] call_softirq+0x1c/0x30
 [<ffffffff8100c3df>] do_softirq+0x4b/0xa3
 [<ffffffff81056055>] irq_exit+0x4a/0x8c
 [<ffffffff81488c30>] smp_apic_timer_interrupt+0x8d/0x9b
 [<ffffffff8100a693>] apic_timer_interrupt+0x13/0x20
 <EOI>  [<ffffffff81011a59>] ? mwait_idle+0x82/0x94
 [<ffffffff81011a50>] ? mwait_idle+0x79/0x94
 [<ffffffff81008c04>] cpu_idle+0xaf/0xe9
 [<ffffffff8147a62d>] start_secondary+0x262/0x2a3

Comment 1 Neil Horman 2010-10-14 15:00:21 UTC
requires upstream commit 7ec75c582e639d956ce3afd499f67febe6f902a4

Comment 2 Fedora Update System 2010-10-19 06:31:45 UTC
kernel- has been submitted as an update for Fedora 13.

Comment 3 Fedora Update System 2010-10-22 18:05:02 UTC
kernel- has been pushed to the Fedora 13 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Bug Zapper 2011-05-31 11:21:57 UTC
This message is a reminder that Fedora 13 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 13.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '13'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 13's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 13 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events.  Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The process we are following is described here:

Comment 5 Bug Zapper 2011-06-28 11:37:23 UTC
Fedora 13 changed to end-of-life (EOL) status on 2011-06-25. Fedora 13 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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