Bugs item #1816339, was opened at 2007-10-19 16:21 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1816339&group_id=180599
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Category: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: yunfeng (yunfeng) Assigned to: Nobody/Anonymous (nobody) Summary: host kernel call trace while running smp guests Initial Comment: I see lots of call traces on host while running a serial of tests for KVM. sw0: port 2(tap0) entering learning state Unable to handle kernel NULL pointer dereference<6>sw0: topology change detected, propagating sw0: port 2(tap0) entering forwarding state at 0000000000000008 RIP: [<ffffffff8801dec6>] :kvm:preempt_notifier_trigger+0x63/0x9d PGD 1ee397067 PUD 10a7c9067 PMD 0 Oops: 0000 [1] SMP CPU 0 Modules linked in: kvm_intel kvm i2c_dev i2c_core Pid: 31438, comm: qemu-system-x86 Not tainted 2.6.22-rc4 #3 RIP: 0010:[<ffffffff8801dec6>] [<ffffffff8801dec6>] :kvm:preempt_notifier_trigger+0x63/0x9d RSP: 0018:ffffffff80807f40 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff810229cc60c8 RCX: ffff8102168fc080 RDX: ffffffff807fc2f0 RSI: 0000000000000000 RDI: ffff810229cc60c8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004 R10: ffff810229cc60c0 R11: 00000000c0000081 R12: 0000000000000000 R13: ffff8102168fc000 R14: 000000000000ae41 R15: 0000000040804250 FS: 0000000040804940(0063) GS:ffffffff80764000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000159868000 CR4: 00000000000026e0 Process qemu-system-x86 (pid: 31438, threadinfo ffff810203d44000, task ffff81023773c140) Stack: 0000000000000000 ffff810149c4c160 ffff810203d458e8 ffffffff8801dbd5 0000000040804250 000000000000ae41 ffff8102168fc000 0000000000000000 00000000c0000081 ffff810229cc60c0 0000000000000004 0000000000000000 Call Trace: <#DB> [<ffffffff8801dbd5>] :kvm:pn_int1_handler+0x29/0x52 [<ffffffff80559380>] __sched_text_start+0x0/0x770 <<EOE>> [<ffffffff8022c027>] __cond_resched+0x1c/0x44 [<ffffffff80559c51>] cond_resched+0x2e/0x39 [<ffffffff80244d10>] down_read+0x9/0x15 [<ffffffff8801128b>] :kvm:gfn_to_page+0x3d/0xd3 [<ffffffff880112e9>] :kvm:gfn_to_page+0x9b/0xd3 [<ffffffff8801132f>] :kvm:kvm_clear_guest_page+0xe/0x7e [<ffffffff8802d422>] :kvm_intel:init_rmode_tss+0x3b/0xce [<ffffffff8802d7ce>] :kvm_intel:vmx_set_cr0+0x319/0x425 [<ffffffff8802e25d>] :kvm_intel:vmx_vcpu_setup+0x5a1/0x5e0 [<ffffffff8802ec30>] :kvm_intel:vmx_create_vcpu+0xc4/0x120 [<ffffffff88013947>] :kvm:kvm_vm_ioctl+0xce/0x6a9 [<ffffffff80260b9b>] zone_statistics+0x3f/0x60 [<ffffffff8025b491>] get_page_from_freelist+0x33b/0x47e [<ffffffff80260b9b>] zone_statistics+0x3f/0x60 [<ffffffff8025b491>] get_page_from_freelist+0x33b/0x47e [<ffffffff80281ef0>] do_lookup+0x63/0x1ae [<ffffffff8025b742>] __alloc_pages+0x61/0x2b5 [<ffffffff802638a1>] __handle_mm_fault+0x571/0x9dc [<ffffffff8028a939>] __d_lookup+0xb0/0x100 [<ffffffff80345a8f>] __up_read+0x13/0x8a [<ffffffff8055d413>] do_page_fault+0x45e/0x7ac [<ffffffff802291e6>] task_rq_lock+0x3d/0x6f [<ffffffff80228dc4>] __activate_task+0x26/0x38 [<ffffffff8022b7aa>] try_to_wake_up+0x3f6/0x407 [<ffffffff80260b9b>] zone_statistics+0x3f/0x60 [<ffffffff8055b98d>] error_exit+0x0/0x84 [<ffffffff8025709e>] find_get_page+0x21/0x50 [<ffffffff80259155>] filemap_nopage+0x180/0x2b0 [<ffffffff80263734>] __handle_mm_fault+0x404/0x9dc [<ffffffff8020ed41>] init_fpu+0x6b/0x87 [<ffffffff8020ad2d>] math_state_restore+0x1a/0x49 [<ffffffff8055b98d>] error_exit+0x0/0x84 [<ffffffff80209174>] sys_rt_sigreturn+0x281/0x34d [<ffffffff80286063>] do_ioctl+0x2b/0xb6 [<ffffffff80286331>] vfs_ioctl+0x243/0x25c [<ffffffff80286386>] sys_ioctl+0x3c/0x5e [<ffffffff8020935e>] system_call+0x7e/0x83 Code: ff 50 08 48 63 d5 48 c7 c0 f8 c2 7f 80 48 8b 14 d5 c0 1b 79 RIP [<ffffffff8801dec6>] :kvm:preempt_notifier_trigger+0x63/0x9d RSP <ffffffff80807f40> CR2: 0000000000000008 ------------[ cut here ]------------ kernel BUG at kernel/exit.c:980! invalid opcode: 0000 [2] SMP CPU 0 Modules linked in: kvm_intel kvm i2c_dev i2c_core Pid: 31438, comm: qemu-system-x86 Not tainted 2.6.22-rc4 #3 RIP: 0010:[<ffffffff80234404>] [<ffffffff80234404>] do_exit+0x79f/0x7a3 RSP: 0018:ffffffff80807d58 EFLAGS: 00010292 RAX: 0000000000000000 RBX: ffffffff80807d58 RCX: ffff810203d44000 RDX: ffff810001037880 RSI: ffff81023773c140 RDI: 0000000000000000 RBP: ffff81023773c140 R08: ffff810203d44000 R09: 0000000000000100 R10: ffff81023550a7c0 R11: ffffffff804f4818 R12: 0000000000000020 R13: ffff81023773c240 R14: ffffffff80807e98 R15: ffff81023773c140 FS: 0000000000000000(0000) GS:ffffffff80764000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00002ac2dd956000 CR3: 0000000225fcb000 CR4: 00000000000026e0 Process qemu-system-x86 (pid: 31438, threadinfo ffff810203d44000, task ffff81023773c140) Stack: ffffffff80807d58 ffffffff80807d58 0000000000000046 ffff810149c4c100 0000000000000008 ffff8102168fc000 ffffffff80807e98 ffffffff8055d6e1 0000000000000000 0000000000000000 0000000000000000 0000000000000000 Call Trace: <#DB> [<ffffffff8055d6e1>] do_page_fault+0x72c/0x7ac [<ffffffff8055b98d>] error_exit+0x0/0x84 [<ffffffff8801dec6>] :kvm:preempt_notifier_trigger+0x63/0x9d [<ffffffff8801dbd5>] :kvm:pn_int1_handler+0x29/0x52 [<ffffffff80559380>] __sched_text_start+0x0/0x770 <<EOE>> [<ffffffff8022c027>] __cond_resched+0x1c/0x44 [<ffffffff80559c51>] cond_resched+0x2e/0x39 [<ffffffff80244d10>] down_read+0x9/0x15 [<ffffffff8801128b>] :kvm:gfn_to_page+0x3d/0xd3 [<ffffffff880112e9>] :kvm:gfn_to_page+0x9b/0xd3 [<ffffffff8801132f>] :kvm:kvm_clear_guest_page+0xe/0x7e [<ffffffff8802d422>] :kvm_intel:init_rmode_tss+0x3b/0xce [<ffffffff8802d7ce>] :kvm_intel:vmx_set_cr0+0x319/0x425 [<ffffffff8802e25d>] :kvm_intel:vmx_vcpu_setup+0x5a1/0x5e0 [<ffffffff8802ec30>] :kvm_intel:vmx_create_vcpu+0xc4/0x120 [<ffffffff88013947>] :kvm:kvm_vm_ioctl+0xce/0x6a9 [<ffffffff80260b9b>] zone_statistics+0x3f/0x60 [<ffffffff8025b491>] get_page_from_freelist+0x33b/0x47e [<ffffffff80260b9b>] zone_statistics+0x3f/0x60 [<ffffffff8025b491>] get_page_from_freelist+0x33b/0x47e [<ffffffff80281ef0>] do_lookup+0x63/0x1ae [<ffffffff8025b742>] __alloc_pages+0x61/0x2b5 [<ffffffff802638a1>] __handle_mm_fault+0x571/0x9dc [<ffffffff8028a939>] __d_lookup+0xb0/0x100 [<ffffffff80345a8f>] __up_read+0x13/0x8a [<ffffffff8055d413>] do_page_fault+0x45e/0x7ac [<ffffffff802291e6>] task_rq_lock+0x3d/0x6f [<ffffffff80228dc4>] __activate_task+0x26/0x38 [<ffffffff8022b7aa>] try_to_wake_up+0x3f6/0x407 [<ffffffff80260b9b>] zone_statistics+0x3f/0x60 [<ffffffff8055b98d>] error_exit+0x0/0x84 [<ffffffff8025709e>] find_get_page+0x21/0x50 [<ffffffff80259155>] filemap_nopage+0x180/0x2b0 [<ffffffff80263734>] __handle_mm_fault+0x404/0x9dc [<ffffffff8020ed41>] init_fpu+0x6b/0x87 [<ffffffff8020ad2d>] math_state_restore+0x1a/0x49 [<ffffffff8055b98d>] error_exit+0x0/0x84 [<ffffffff80209174>] sys_rt_sigreturn+0x281/0x34d [<ffffffff80286063>] do_ioctl+0x2b/0xb6 [<ffffffff80286331>] vfs_ioctl+0x243/0x25c [<ffffffff80286386>] sys_ioctl+0x3c/0x5e [<ffffffff8020935e>] system_call+0x7e/0x83 Code: 0f 0b eb fe 41 54 40 84 ff 55 89 fd 53 79 04 0f 0b eb fe 65 RIP [<ffffffff80234404>] do_exit+0x79f/0x7a3 RSP <ffffffff80807d58> Fixing recursive fault but reboot is needed! Unable to handle kernel NULL pointer dereference at 0000000000000004 RIP: [<ffffffff80233e0d>] do_exit+0x1a8/0x7a3 PGD 22e950067 PUD 0 Oops: 0002 [3] SMP CPU 1 Modules linked in: kvm_intel kvm i2c_dev i2c_core Pid: 31438, comm: qemu-system-x86 Not tainted 2.6.22-rc4 #3 RIP: 0010:[<ffffffff80233e0d>] [<ffffffff80233e0d>] do_exit+0x1a8/0x7a3 RSP: 0018:ffffffff80807b98 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffff80807ca8 RCX: 0000000000000000 RDX: ffff810001041880 RSI: ffff81023773c140 RDI: ffff81022ecd2f40 RBP: ffff81023773c140 R08: ffff810203d44000 R09: ffff810235247d00 R10: 0000000000000000 R11: 0000000016000000 R12: 0000000000000246 R13: 000000000000000b R14: ffffffff80807e98 R15: ffff81023773c140 FS: 0000000000000000(0000) GS:ffff8102376aeb40(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000004 CR3: 000000022641f000 CR4: 00000000000026e0 Process qemu-system-x86 (pid: 31438, threadinfo ffff810203d44000, task ffff81023773c140) Stack: ffffffff8055b533 0000000000000010 ffffffff80807ca8 0000000000000000 0000000000000246 ffffffff8065da6c ffffffff80807e98 ffffffff8020ab1a 0000000000000000 ffffffff80807ca8 0000000000000000 0000000000000020 Call Trace: Code: f0 ff 48 04 0f 94 c2 45 31 e4 84 d2 41 0f 95 c4 45 85 e4 74 RIP [<ffffffff80233e0d>] do_exit+0x1a8/0x7a3 RSP <ffffffff80807b98> CR2: 0000000000000004 Fixing recursive fault but reboot is needed! tap0: no IPv6 routers present ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1816339&group_id=180599 ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. 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