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Message-ID: <20130821094432.GA28249@lnx-rg> Date: Wed, 21 Aug 2013 11:47:20 +0200 From: Richard GENOUD <richard.genoud@...il.com> To: Maxime Ripard <maxime.ripard@...e-electrons.com> Cc: Stefan Roese <sr@...x.de>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: sun4i_handle_irq: WARNING at net/ipv4/tcp_input.c:2711 tcp_fastretrans_alert Hi Maxime, Stephan I just realise that, *sometimes*, I have some warnings on my cubieboard (6 since the 22 of july, and the board is runnning 24/24). It has happened also on 3.10 + emac patches. Here it is: [27224.060000] ------------[ cut here ]------------ [27224.070000] WARNING: CPU: 0 PID: 0 at net/ipv4/tcp_input.c:2711 tcp_fastretrans_alert+0x717/0x734() [27224.080000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.11.0-rc6-00010-g54f11ec #8 [27224.080000] [<c000f231>] (unwind_backtrace+0x1/0x98) from [<c000e2b7>] (show_stack+0xb/0xc) [27224.090000] [<c000e2b7>] (show_stack+0xb/0xc) from [<c0013cd3>] (warn_slowpath_common+0x43/0x5c) [27224.100000] [<c0013cd3>] (warn_slowpath_common+0x43/0x5c) from [<c0013d6d>] (warn_slowpath_null+0x11/0x14) [27224.110000] [<c0013d6d>] (warn_slowpath_null+0x11/0x14) from [<c015eadf>] (tcp_fastretrans_alert+0x717/0x734) [27224.120000] [<c015eadf>] (tcp_fastretrans_alert+0x717/0x734) from [<c015f32b>] (tcp_ack+0x6af/0x984) [27224.130000] [<c015f32b>] (tcp_ack+0x6af/0x984) from [<c015fcab>] (tcp_rcv_established+0x93/0x3ec) [27224.140000] [<c015fcab>] (tcp_rcv_established+0x93/0x3ec) from [<c0165621>] (tcp_v4_do_rcv+0xa1/0x160) [27224.150000] [<c0165621>] (tcp_v4_do_rcv+0xa1/0x160) from [<c0167129>] (tcp_v4_rcv+0x4e9/0x500) [27224.160000] [<c0167129>] (tcp_v4_rcv+0x4e9/0x500) from [<c015025d>] (ip_local_deliver_finish+0x79/0x180) [27224.170000] [<c015025d>] (ip_local_deliver_finish+0x79/0x180) from [<c01500a1>] (ip_rcv_finish+0xc9/0x20c) [27224.180000] [<c01500a1>] (ip_rcv_finish+0xc9/0x20c) from [<c0129493>] (__netif_receive_skb_core+0x287/0x3dc) [27224.190000] [<c0129493>] (__netif_receive_skb_core+0x287/0x3dc) from [<c0129a8b>] (process_backlog+0x5b/0xd0) [27224.200000] [<c0129a8b>] (process_backlog+0x5b/0xd0) from [<c012bc6f>] (net_rx_action+0x5f/0xe8) [27224.200000] [<c012bc6f>] (net_rx_action+0x5f/0xe8) from [<c0015fc9>] (__do_softirq+0x91/0x134) [27224.210000] [<c0015fc9>] (__do_softirq+0x91/0x134) from [<c0016251>] (irq_exit+0x59/0x80) [27224.220000] [<c0016251>] (irq_exit+0x59/0x80) from [<c000d00d>] (handle_IRQ+0x21/0x54) [27224.230000] [<c000d00d>] (handle_IRQ+0x21/0x54) from [<c00083ef>] (sun4i_handle_irq+0x1f/0x30) [27224.240000] [<c00083ef>] (sun4i_handle_irq+0x1f/0x30) from [<c000ea1b>] (__irq_svc+0x3b/0x5c) [27224.250000] Exception stack(0xc0287f70 to 0xc0287fb8) [27224.250000] 7f60: 00000000 00000000 00000000 00000000 [27224.260000] 7f80: c0286000 c02ad7fd 00000001 c02ad7fd c028e084 413fc082 00000000 00000000 [27224.270000] 7fa0: 01000000 c0287fb8 c000d115 c000d116 40000033 ffffffff [27224.270000] [<c000ea1b>] (__irq_svc+0x3b/0x5c) from [<c000d116>] (arch_cpu_idle+0x16/0x1c) [27224.280000] [<c000d116>] (arch_cpu_idle+0x16/0x1c) from [<c002e69d>] (cpu_startup_entry+0x35/0xa0) [27224.290000] [<c002e69d>] (cpu_startup_entry+0x35/0xa0) from [<c026f75f>] (start_kernel+0x1af/0x1f0) [27224.300000] ---[ end trace 15641276e08fba8a ]--- Best regards, Richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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