Hi, I experience the following crash with current linux-next when trying to mount the rootfs via NFS: <--- snip ---> fec 2188000.ethernet eth0: Freescale FEC PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=2188000.ethernet:00, irq=-1) fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx Sending DHCP requests . Unable to handle kernel NULL pointer dereference at virtual address 00000009 pgd = 80004000 [00000009] *pgd=00000000 , Internal error: Oops: 5 [#1] SMP ARM Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 4.3.0-rc1-next-20150917-karo #364 Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) task: 807a2b68 ti: 8079e000 task.ti: 8079e000 PC is at ip_route_input_noref+0x238/0x81c LR is at dst_alloc+0x70/0x94 pc : [<804ab100>] lr : [<8048f7fc>] psr: 20000113 sp : 8079fca0 ip : 8079fc40 fp : 00000010 r10: be22a000 r9 : be2e0000 r8 : 00000001 r7 : 00000000 r6 : be0b2b40 r5 : bd9a3800 r4 : ffffff8f r3 : 00000001 r2 : 804a96a8 r1 : bd9a3870 r0 : bd9a3800 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c5387d Table: 1000404a DAC: 00000051 Process swapper/0 (pid: 0, stack limit = 0x8079e210) Stack: (0x8079fca0 to 0x807a0000) fca0: 00000000 00000000 8079fd60 40000193 00035220 00000000 fffffff8 00000000 fcc0: 00000100 00070000 00000000 00000000 00000001 bdcb0618 00000000 00000004 fce0: 00000000 00000010 20000000 802568cc 00000000 00000000 0164a8c0 5f64a8c0 fd00: be22a000 807a2168 bd98e480 bd9d774e be0b2b58 00000000 00000000 be0b2b40 fd20: be0b2be4 807c75c0 00000001 804ad534 be22a000 be0b2b40 807a2168 be0b2b40 fd40: 807a2168 be22a000 be22a048 00000008 be22a05c 80481268 be01ff40 807a0100 fd60: 807cc340 be0b2b40 be22a590 be0b2b40 807a2160 be22a05c 0000000e 807a124c fd80: be0b2b40 bf048000 00000000 00000800 00000001 bf048000 be22a000 80484cc8 fda0: 00000000 be0b2b40 be22a590 bf048000 00000000 00000800 00000001 be0b2b40 fdc0: 00000003 8048581c 00000002 be0b2b40 00000000 8039d784 00000001 001dcd65 fde0: 40000000 00000012 00000040 be22a040 02000022 be2d0000 0000015a 00000000 fe00: 00000000 00000002 4d9d7740 bd98e3c0 00000000 00000000 00000000 00000000 fe20: be22a524 00000040 be22a4c0 be22a590 8001504c 8007aa70 00000000 be22a590 fe40: 8039d30c 00000040 0000012c ffff8d25 8079c4c0 8079fe70 3e81f000 80485438 fe60: 62a5cb80 807a0100 8079fe78 befbb4c0 8079fe70 8079fe70 8079fe78 8079fe78 fe80: 00000001 00000000 807a008c 00000003 80798248 807a0080 807a0080 00000100 fea0: 00000003 80025148 be1975a0 00000000 00000096 0000000a ffff8d24 00200000 fec0: 8052edd4 807990d0 00000000 00000000 00000096 be008000 00000001 f4001100 fee0: 8052edd4 8002552c 807990d0 8005f074 f4000100 f400010c 807a0770 807af670 ff00: 8079ff28 80009428 80079bc0 8040574c 60000113 ffffffff 8079ff5c 62a5d0b5 ff20: 807982a4 80012d14 00000000 befbd740 00000005 00000695 622d2de5 00000001 ff40: befba270 00000001 62a5d0b5 00000001 807982a4 8052edd4 021fcf24 8079ff78 ff60: 80079bc0 8040574c 60000113 ffffffff 00000051 80405704 00000000 00000000 ff80: 62a5d0b5 00000001 befba270 807a0448 befba270 807a43c8 8079b268 807a049c ffa0: 807a0494 807982a4 8052edd4 80055e58 000000fc 807cc5c0 00000000 80751bc4 ffc0: ffffffff ffffffff 00000000 80751674 00000000 807888c0 00000000 807cc854 ffe0: 807a0440 807888bc 807a3b88 1000406a 00000000 1000807c 00000000 00000000 [<804ab100>] (ip_route_input_noref) from [<804ad534>] (ip_rcv+0x330/0x770) [<804ad534>] (ip_rcv) from [<80481268>] (__netif_receive_skb_core+0x2b0/0x7b0) [<80481268>] (__netif_receive_skb_core) from [<80484cc8>] (netif_receive_skb_internal+0x30/0xa0) [<80484cc8>] (netif_receive_skb_internal) from [<8048581c>] (napi_gro_receive+0x78/0xa4) [<8048581c>] (napi_gro_receive) from [<8039d784>] (fec_enet_rx_napi+0x478/0xbb8) [<8039d784>] (fec_enet_rx_napi) from [<80485438>] (net_rx_action+0xf4/0x2c8) [<80485438>] (net_rx_action) from [<80025148>] (__do_softirq+0xe8/0x238) [<80025148>] (__do_softirq) from [<8002552c>] (irq_exit+0xa8/0x114) [<8002552c>] (irq_exit) from [<8005f074>] (__handle_domain_irq+0x58/0xb0) [<8005f074>] (__handle_domain_irq) from [<80009428>] (gic_handle_irq+0x40/0x8c) [<80009428>] (gic_handle_irq) from [<80012d14>] (__irq_svc+0x54/0x70) Exception stack(0x8079ff28 to 0x8079ff70) ff20: 00000000 befbd740 00000005 00000695 622d2de5 00000001 ff40: befba270 00000001 62a5d0b5 00000001 807982a4 8052edd4 021fcf24 8079ff78 ff60: 80079bc0 8040574c 60000113 ffffffff [<80012d14>] (__irq_svc) from [<8040574c>] (cpuidle_enter_state+0xd8/0x258) [<8040574c>] (cpuidle_enter_state) from [<80055e58>] (cpu_startup_entry+0x174/0x24c) [<80055e58>] (cpu_startup_entry) from [<80751bc4>] (start_kernel+0x300/0x354) [<80751bc4>] (start_kernel) from [<1000807c>] (0x1000807c) Code: e5c5205e e59f25c8 e3530000 e585202c (15933008) ---[ end trace 48499f217b13223f ]--- Kernel panic - not syncing: Fatal exception in interrupt CPU1: stopping CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D W 4.3.0-rc1-next-20150917-karo #364 Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [<8001639c>] (unwind_backtrace) from [<80012260>] (show_stack+0x10/0x14) [<80012260>] (show_stack) from [<80251918>] (dump_stack+0x78/0x94) [<80251918>] (dump_stack) from [<800151f8>] (handle_IPI+0x170/0x1ac) [<800151f8>] (handle_IPI) from [<80009468>] (gic_handle_irq+0x80/0x8c) [<80009468>] (gic_handle_irq) from [<80012d14>] (__irq_svc+0x54/0x70) Exception stack(0xbe08bf60 to 0xbe08bfa8) bf60: 00000000 80812130 00000002 0000069f 7a3b2c82 00000001 befc6270 00000001 bf80: 7ab9e738 00000001 807982a4 8052edd4 00000000 be08bfb0 8007b290 8040574c bfa0: 60000113 ffffffff [<80012d14>] (__irq_svc) from [<8040574c>] (cpuidle_enter_state+0xd8/0x258) [<8040574c>] (cpuidle_enter_state) from [<80055e58>] (cpu_startup_entry+0x174/0x24c) [<80055e58>] (cpu_startup_entry) from [<1000950c>] (0x1000950c) <--- snap --->
I bisected it down to: commit b7503e0cdb5d (net: Add FIB table id to rtable) There may be other ways to produce the same crash too, but I did not test any further. Lothar Waßmann -- ___________________________________________________________ Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10 Geschäftsführer: Matthias Kaussen Handelsregistereintrag: Amtsgericht Aachen, HRB 4996 www.karo-electronics.de | i...@karo-electronics.de ___________________________________________________________ -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
