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New: WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0x24b/0x25a()

Bugme-new Andrew Morton 4 participants 4 messages Nov 5, 2008 1 message not in the archive

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Andrew Morton

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#1 lore raw

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

Quoted 18 lines · On Wed, 5 Nov 2008 00:38:10 -0800 (PST) [email protected] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=11955

           Summary: WARNING: at net/sched/sch_generic.c:219
                    dev_watchdog+0x24b/0x25a()
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.27.4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]
Quoted 2 lines

Latest working kernel version: 2.6.27.3
Earliest failing kernel version: 2.6.27.4

A regression in -stable.

Quoted 45 lines

Distribution: Debian/testing
Hardware Environment:
Software Environment:
Problem Description:

Steps to reproduce:

In dmesg I found:

[28739.530306] bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex, receive
& transmit flow control ON
[221569.991014] ------------[ cut here ]------------
[221569.991064] WARNING: at net/sched/sch_generic.c:219
dev_watchdog+0x24b/0x25a()
[221569.991108] NETDEV WATCHDOG: eth0 (bnx2): transmit timed out
[221569.991136] Modules linked in: xt_tcpudp nf_conntrack_ipv4 xt_state
nf_conntrack iptable_filter ip_tables x_tables tg3 libphy bnx2 zlib_inflate
psmouse crc32 thermal container button processor
[221569.991245] Pid: 0, comm: swapper Not tainted 2.6.27.4 #1
[221569.991273]  [<c012348a>] warn_slowpath+0x6f/0x96
[221569.991302]  [<c0137685>] hrtimer_reprogram+0x71/0xa4
[221569.991332]  [<c013772c>] enqueue_hrtimer+0x74/0x100
[221569.991360]  [<c013807c>] hrtimer_start+0xa3/0x145
[221569.991388]  [<c011d7e5>] hrtick_start_fair+0x131/0x147
[221569.991417]  [<c011f06d>] try_to_wake_up+0xbd/0x182
[221569.991444]  [<c01e5684>] strlcpy+0x11/0x3d
[221569.991472]  [<c027e5b1>] netdev_drivername+0x2f/0x33
[221569.991501]  [<c028b208>] dev_watchdog+0x24b/0x25a
[221569.991529]  [<c011a59c>] __wake_up+0x32/0x42
[221569.991556]  [<c012bb76>] run_timer_softirq+0x101/0x1b7
[221569.991585]  [<c028afbd>] dev_watchdog+0x0/0x25a
[221569.991612]  [<c0127f8a>] __do_softirq+0x87/0xfd
[221569.991640]  [<c0127f03>] __do_softirq+0x0/0xfd
[221569.991667]  [<c010666a>] do_softirq+0x7f/0xb1
[221569.991695]  [<c0127b85>] irq_exit+0x66/0x7a
[221569.991721]  [<c0111475>] smp_apic_timer_interrupt+0x57/0x82
[221569.991752]  [<c01e7290>] trace_hardirqs_off_thunk+0xc/0x10
[221569.991781]  [<c01044f1>] apic_timer_interrupt+0x2d/0x34
[221569.991810]  [<c01098f9>] mwait_idle+0x36/0x3e
[221569.991837]  [<c0102a95>] cpu_idle+0x60/0xab
[221569.991864]  =======================
[221569.991887] ---[ end trace f996508cd6a61637 ]---
[221570.100912] bnx2: eth0 NIC Copper Link is Down
#2 lore raw
Quoted 24 lines · Andrew Morton

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

Quoted 18 lines · On Wed, 5 Nov 2008 00:38:10 -0800 (PST) [email protected] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=11955

           Summary: WARNING: at net/sched/sch_generic.c:219
                    dev_watchdog+0x24b/0x25a()
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.27.4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]
Quoted 4 lines
Quoted 2 lines

Latest working kernel version: 2.6.27.3
Earliest failing kernel version: 2.6.27.4

A regression in -stable.

Absolutely no, unless it is reproducible on every boot. No bnx2 changes between stables and no net/core/ changes.

Quoted 50 lines
Quoted 35 lines

Distribution: Debian/testing
Hardware Environment:
Software Environment:
Problem Description:

Steps to reproduce:

In dmesg I found:

[28739.530306] bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex, receive
& transmit flow control ON
[221569.991014] ------------[ cut here ]------------
[221569.991064] WARNING: at net/sched/sch_generic.c:219
dev_watchdog+0x24b/0x25a()
[221569.991108] NETDEV WATCHDOG: eth0 (bnx2): transmit timed out
[221569.991136] Modules linked in: xt_tcpudp nf_conntrack_ipv4 xt_state
nf_conntrack iptable_filter ip_tables x_tables tg3 libphy bnx2 zlib_inflate
psmouse crc32 thermal container button processor
[221569.991245] Pid: 0, comm: swapper Not tainted 2.6.27.4 #1
[221569.991273]  [<c012348a>] warn_slowpath+0x6f/0x96
[221569.991302]  [<c0137685>] hrtimer_reprogram+0x71/0xa4
[221569.991332]  [<c013772c>] enqueue_hrtimer+0x74/0x100
[221569.991360]  [<c013807c>] hrtimer_start+0xa3/0x145
[221569.991388]  [<c011d7e5>] hrtick_start_fair+0x131/0x147
[221569.991417]  [<c011f06d>] try_to_wake_up+0xbd/0x182
[221569.991444]  [<c01e5684>] strlcpy+0x11/0x3d
[221569.991472]  [<c027e5b1>] netdev_drivername+0x2f/0x33
[221569.991501]  [<c028b208>] dev_watchdog+0x24b/0x25a
[221569.991529]  [<c011a59c>] __wake_up+0x32/0x42
[221569.991556]  [<c012bb76>] run_timer_softirq+0x101/0x1b7
[221569.991585]  [<c028afbd>] dev_watchdog+0x0/0x25a
[221569.991612]  [<c0127f8a>] __do_softirq+0x87/0xfd
[221569.991640]  [<c0127f03>] __do_softirq+0x0/0xfd
[221569.991667]  [<c010666a>] do_softirq+0x7f/0xb1
[221569.991695]  [<c0127b85>] irq_exit+0x66/0x7a
Quoted 10 lines
[221569.991721]  [<c0111475>] smp_apic_timer_interrupt+0x57/0x82
[221569.991752]  [<c01e7290>] trace_hardirqs_off_thunk+0xc/0x10
[221569.991781]  [<c01044f1>] apic_timer_interrupt+0x2d/0x34
[221569.991810]  [<c01098f9>] mwait_idle+0x36/0x3e
[221569.991837]  [<c0102a95>] cpu_idle+0x60/0xab
[221569.991864]  =======================
[221569.991887] ---[ end trace f996508cd6a61637 ]---
[221570.100912] bnx2: eth0 NIC Copper Link is Down

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maintainer
#3 lore raw
In reply to Andrew Morton

From: Andrew Morton <[email protected]>
Date: Wed, 5 Nov 2008 01:02:47 -0800

Quoted 6 lines · On Wed, 5 Nov 2008 00:38:10 -0800 (PST) [email protected] wrote:
Quoted 3 lines

Latest working kernel version: 2.6.27.3
Earliest failing kernel version: 2.6.27.4

A regression in -stable.

I personally suspect the pile of ACPI changes that went into 2.6.27.4

There is nothing in the networking bits that could have even remotely caused this.

#4 lore raw
In reply to Andrew Morton
Quoted 5 lines · Andrew Morton
Quoted 5 lines
[28739.530306] bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex, receive
& transmit flow control ON
[221569.991014] ------------[ cut here ]------------
[221569.991064] WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0x24b/0x25a()

Only for your info, it looks like a warning, I posted few days ago. But trace path is different. (I use e1000e and have disabled hr-timers). I sent similar warning with 2.6.26.5 kernel.

Signature · 1 line
Milan Kocian