Hello all I am porting a virtual interface driver from 2.4 to 2.6 . i was able to create a virtual interface successfully using ioctl command i was able to create the interface. and was able to set various parameters of the interface , but when i try to bring up the interface i get the following dump. i tried locking using rtnl_lock and spin_lock_irqsave ...during that time the system got hung ... as of now i am using spin_lock for the critical region and get the following dump. can any one please suggest me how do i go about to resolve the issue. Jan 1 00:02:57 localhost kernel: BUG: soft lockup detected on CPU#1! Jan 1 00:02:57 localhost kernel: Call Trace: Jan 1 00:02:57 localhost kernel: [<ffffffff81123570>] dump_stack+0x8/0x48 Jan 1 00:02:57 localhost kernel: [<ffffffff81187864>] softlockup_tick+0x1c4/0x238 Jan 1 00:02:57 localhost kernel: [<ffffffff8115d6ac>] update_process_times+0x44/0x98 Jan 1 00:02:57 localhost kernel: [<ffffffff81101644>] octeon_main_timer_interrupt+0x194/0x1a0 Jan 1 00:02:57 localhost kernel: [<ffffffff81187fa0>] handle_IRQ_event+0xf0/0x490 Jan 1 00:02:57 localhost kernel: [<ffffffff8118a430>] handle_percpu_irq+0x98/0x118 Jan 1 00:02:57 localhost kernel: [<ffffffff81105550>] plat_irq_dispatch+0x100/0x270 Jan 1 00:02:57 localhost kernel: [<ffffffff8111c3c0>] ret_from_irq+0x0/0x4 Jan 1 00:02:57 localhost kernel: [<ffffffff8143febc>] _spin_lock+0x6c/0xc0 Jan 1 00:02:57 localhost kernel: [<c0000000000b0cbc>] vif_open+0x84/0x3e8 [cavium_vidd] Jan 1 00:02:57 localhost kernel: [<ffffffff81385b50>] dev_open+0x68/0xd8 Jan 1 00:02:57 localhost kernel: [<ffffffff813817cc>] dev_change_flags+0x144/0x188 Jan 1 00:02:57 localhost kernel: [<c0000000000af774>] vif_devinet_ioctl+0x2fc/0x8b8 [cavium_vidd] Jan 1 00:02:57 localhost kernel: [<c0000000000aeb94>] VIDD_ioctl+0x824/0xf70 [cavium_vidd] Jan 1 00:02:57 localhost kernel: [<ffffffff813848e0>] dev_ioctl+0x320/0x560 Jan 1 00:02:57 localhost kernel: [<ffffffff8137221c>] sock_ioctl+0x1bc/0x3f8 Jan 1 00:02:57 localhost kernel: [<ffffffff811cfbe0>] do_ioctl+0x40/0xd0 Jan 1 00:02:57 localhost kernel: [<ffffffff811cfcf0>] vfs_ioctl+0x80/0x3e8 Jan 1 00:02:57 localhost kernel: [<ffffffff811d012c>] sys_ioctl+0xd4/0x1b8 Jan 1 00:02:57 localhost kernel: [<ffffffff811277b4>] syscall_trace_entry+0x78/0x98 Jan 1 00:02:57 localhost kernel: -Thanks in advance Krishna -- View this message in context: http://www.nabble.com/kernel-dump-in-dev_change_flags-tp20478996p20478996.html Sent from the linux-mips main mailing list archive at Nabble.com.
