sorry, i recompile kernel with some option, and crash again : ( it seems i need to run a lot of qemu process to bug ) [ 3117.379546] BUG: unable to handle kernel paging request at 000000010000003b [ 3117.379783] IP: [<ffffffff811a3654>] tid_fd_revalidate+0x84/0x1a0 [ 3117.379978] PGD 6ea4e0067 PUD 0 [ 3117.380012] Oops: 0000 [#1] SMP [ 3117.380012] CPU 4 [ 3117.380012] Modules linked in: kvm_intel kvm [last unloaded: kvm] [ 3117.380012] [ 3117.380012] Pid: 9816, comm: netstat Not tainted 3.5.0-rc7 #2 Dell Inc. PowerEdge M600/0MY736 [ 3117.380012] RIP: 0010:[<ffffffff811a3654>] [<ffffffff811a3654>] tid_fd_revalidate+0x84/0x1a0 [ 3117.380012] RSP: 0018:ffff8806ff6c1d78 EFLAGS: 00010206 [ 3117.380012] RAX: ffff8806fc5042c0 RBX: ffff8806fa161380 RCX: 000000000000007e [ 3117.380012] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffff8806fc5042c0 [ 3117.411799] RBP: ffff8806ff6c1d98 R08: ffff88083fd16b30 R09: ffffffff8119fef0 [ 3117.411799] R10: 0000000000000000 R11: 0000000000000206 R12: ffff8807e3d20180 [ 3117.411799] R13: ffff880759832000 R14: ffff8807f2980838 R15: ffff8806ff6c1e08 [ 3117.411799] FS: 00007fcb7124b700(0000) GS:ffff88083fd00000(0000) knlGS:0000000000000000 [ 3117.438973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3117.438973] CR2: 000000010000003b CR3: 000000075e06c000 CR4: 00000000000027e0 [ 3117.438973] DR0: 0000000000000003 DR1: 00000000000000b0 DR2: 0000000000000001 [ 3117.438973] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 3117.438973] Process netstat (pid: 9816, threadinfo ffff8806ff6c0000, task ffff8807cefb3000) [ 3117.438973] Stack: [ 3117.438973] ffff8807e3d20180 0000000000000007 ffff8806fa161380 ffff8807e3ef5c00 [ 3117.490924] ffff8806ff6c1dc8 ffffffff811a3880 ffffffffff0a0210 0000000000000001 [ 3117.490924] ffff8806ff6c1e98 ffff8807f22a8d00 ffff8806ff6c1e48 ffffffff811a4cd6 [ 3117.490924] Call Trace: [ 3117.490924] [<ffffffff811a3880>] proc_fd_instantiate+0x80/0xa0 [ 3117.490924] [<ffffffff811a4cd6>] proc_fill_cache+0x126/0x150 [ 3117.490924] [<ffffffff811a3800>] ? proc_fdinfo_instantiate+0x90/0x90 [ 3117.490924] [<ffffffff811505a0>] ? filldir64+0xe0/0xe0 [ 3117.490924] [<ffffffff811a5006>] proc_readfd_common+0xf6/0x1c0 [ 3117.490924] [<ffffffff811a3800>] ? proc_fdinfo_instantiate+0x90/0x90 [ 3117.490924] [<ffffffff811505a0>] ? filldir64+0xe0/0xe0 [ 3117.490924] [<ffffffff811a5105>] proc_readfd+0x15/0x20 [ 3117.490924] [<ffffffff811507c0>] vfs_readdir+0xa0/0xc0 [ 3117.490924] [<ffffffff811505a0>] ? filldir64+0xe0/0xe0 [ 3117.490924] [<ffffffff8115096d>] sys_getdents+0x8d/0x100 [ 3117.490924] [<ffffffff81ae9c29>] system_call_fastpath+0x16/0x1b [ 3117.609269] alloc_fd: slot 7 not NULL! [ 3117.490924] Code: b8 00 00 00 48 8b 50 08 44 3b 32 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 13 29 ea ff 4c 89 ef e8 4b df ff ff 85 c0 0f 84 [ 3117.490924] RIP [<ffffffff811a3654>] tid_fd_revalidate+0x84/0x1a0 [ 3117.490924] RSP <ffff8806ff6c1d78> [ 3117.651103] CR2: 000000010000003b [ 3117.651103] ------------[ cut here ]------------ [ 3117.651103] WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0x7a/0xa0() [ 3117.651103] Hardware name: PowerEdge M600 [ 3117.651103] Modules linked in: kvm_intel kvm [last unloaded: kvm] [ 3117.651103] Pid: 9816, comm: netstat Not tainted 3.5.0-rc7 #2 [ 3117.651103] Call Trace: [ 3117.651103] [<ffffffff81041c1f>] warn_slowpath_common+0x7f/0xc0 [ 3117.651103] [<ffffffff81041c7a>] warn_slowpath_null+0x1a/0x20 [ 3117.651103] [<ffffffff8104a88a>] local_bh_enable_ip+0x7a/0xa0 [ 3117.651103] [<ffffffff81ae9129>] _raw_spin_unlock_bh+0x19/0x20 [ 3117.651103] [<ffffffff81441dea>] cn_netlink_send+0xaa/0x180 [ 3117.651103] [<ffffffff813d39fb>] uvesafb_exec+0x14b/0x290 [ 3117.651103] [<ffffffff813d3c7c>] uvesafb_blank+0x13c/0x180 [ 3117.651103] [<ffffffff813c0332>] fb_blank+0x62/0xc0 [ 3117.651103] [<ffffffff813d0690>] ? bit_update_start+0x60/0x60 [ 3117.651103] [<ffffffff813cc74b>] fbcon_blank+0x22b/0x2d0 [ 3117.651103] [<ffffffff8106b6fe>] ? up+0x2e/0x50 [ 3117.651103] [<ffffffff81043fa5>] ? console_unlock+0x245/0x3c0 [ 3117.651103] [<ffffffff8102db49>] ? default_spin_lock_flags+0x9/0x10 [ 3117.651103] [<ffffffff81ae8eef>] ? _raw_spin_lock_irqsave+0x2f/0x40 [ 3117.651103] [<ffffffff81052c3c>] ? lock_timer_base+0x3c/0x70 [ 3117.651103] [<ffffffff8105364d>] ? mod_timer+0x15d/0x2b0 [ 3117.651103] [<ffffffff81429d38>] do_unblank_screen+0xa8/0x1c0 [ 3117.651103] [<ffffffff81429e60>] unblank_screen+0x10/0x20 [ 3117.651103] [<ffffffff81395305>] bust_spinlocks+0x15/0x40 [ 3117.651103] [<ffffffff81005c6f>] oops_end+0x3f/0xf0 [ 3117.651103] [<ffffffff8103165d>] no_context+0x11d/0x2d0 [ 3117.651103] [<ffffffff81031541>] ? no_context+0x1/0x2d0 [ 3117.651103] [<ffffffff8103194d>] __bad_area_nosemaphore+0x13d/0x220 [ 3117.651103] [<ffffffff81031aa6>] __bad_area+0x56/0x70 [ 3117.651103] [<ffffffff81031ad3>] bad_area+0x13/0x20 [ 3117.651103] [<ffffffff81032016>] do_page_fault+0x356/0x440 [ 3117.651103] [<ffffffff81ae8eae>] ? _raw_spin_lock+0xe/0x20 [ 3117.651103] [<ffffffff81ae8eae>] ? _raw_spin_lock+0xe/0x20 [ 3117.651103] [<ffffffff8106db4a>] ? lg_local_unlock+0x1a/0x20 [ 3117.651103] [<ffffffff81ae8eae>] ? _raw_spin_lock+0xe/0x20 [ 3117.651103] [<ffffffff8106db4a>] ? lg_local_unlock+0x1a/0x20 [ 3117.651103] [<ffffffff81ae9575>] page_fault+0x25/0x30 [ 3117.651103] [<ffffffff8119fef0>] ? proc_alloc_inode+0x20/0xa0 [ 3117.651103] [<ffffffff811a3654>] ? tid_fd_revalidate+0x84/0x1a0 [ 3117.651103] [<ffffffff811a3624>] ? tid_fd_revalidate+0x54/0x1a0 [ 3117.651103] [<ffffffff811a3880>] proc_fd_instantiate+0x80/0xa0 [ 3117.651103] [<ffffffff811a4cd6>] proc_fill_cache+0x126/0x150 [ 3117.651103] [<ffffffff811a3800>] ? proc_fdinfo_instantiate+0x90/0x90 [ 3117.651103] [<ffffffff811505a0>] ? filldir64+0xe0/0xe0 [ 3117.651103] [<ffffffff811a5006>] proc_readfd_common+0xf6/0x1c0 [ 3117.651103] [<ffffffff811a3800>] ? proc_fdinfo_instantiate+0x90/0x90 [ 3117.651103] [<ffffffff811505a0>] ? filldir64+0xe0/0xe0 [ 3117.651103] [<ffffffff811a5105>] proc_readfd+0x15/0x20 [ 3117.651103] [<ffffffff811507c0>] vfs_readdir+0xa0/0xc0 [ 3117.651103] [<ffffffff811505a0>] ? filldir64+0xe0/0xe0 [ 3117.651103] [<ffffffff8115096d>] sys_getdents+0x8d/0x100 [ 3117.651103] [<ffffffff81ae9c29>] system_call_fastpath+0x16/0x1b [ 3117.651103] ---[ end trace 26e2f3891a2cefe1 ]--- [ 3118.086497] ---[ end trace 26e2f3891a2cefe2 ]--- 2012/7/16 Avi Kivity <avi@xxxxxxxxxx>: > On 07/16/2012 05:37 PM, nicolas prochazka wrote: >> No, It is not 100% reproductible, I'm trying to find the case, but : >> Now when i start a qemu-kvm , >> there is a kvm-pit/xxxx which takes a lot of cpu time ( ~ 20 %) , ( >> not with kernel 3.3.8 ) >> >> for the complete stack trace, which kernel options should i set, >> i've already kernel debug . > > Should be following the BUG message. Is what you posted everything you got? > >> >> Regards, >> Nicolas Prochazka. >> >> 2012/7/16 Avi Kivity <avi@xxxxxxxxxx>: >>> On 07/16/2012 02:06 PM, nicolas prochazka wrote: >>>> Hello, >>>> with linux kernel 3.5rc6 and 3.5rc7 >>>> I do not test with other kernel 3.5. >>>> On linux kernel 3.3.8 , threre is no problem. >>>> >>>> If I start qemu-kvm process, system is overload and >>>> dmesg : >>>> >>>> BUG: unable to handle kernel paging request at 000000010000003b >>>> IP: [<ffffffff8119f694>] tid_fd_revalidate+0x84/0x1a0 >>>> PGD 66989a067 PUD 0 >>>> Oops: 0000 [#1] SMP >>>> CPU 3 >>>> Modules linked in: [last unloaded: kvm] >>> >>> Is this repeatable? >>> >>> Please post a complete stack trace. >>> >>> >>> >>> >>> -- >>> error compiling committee.c: too many arguments to function >>> >>> >> > > > -- > error compiling committee.c: too many arguments to function > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
