Messages in this thread | | | Subject | Re: [GIT] security / creds fixes | From | Eric Paris <> | Date | Wed, 16 Sep 2009 09:38:34 -0400 |
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On Wed, 2009-09-16 at 15:02 +0200, Ingo Molnar wrote: > i'm still getting crashes even with latest -git [0cb583f]:
This is something totally different, not quite sure since my system doesn't reproduce it. It's doesn't look like the problem I ran into where SLUB couldn't call kmem_cache_destroy at all. I'll build with your config. I have an idea, I assume this is an SMP machine?
-Eric
> EXT3-fs: mounted filesystem with ordered data mode. > VFS: Mounted root (ext3 filesystem) readonly on device 8:6. > async_waiting @ 1 > async_continuing @ 1 after 0 usec > debug: unmapping init memory ffffffff81f1e000..ffffffff81fb1000 > SELinux: Disabled at runtime. > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [<ffffffff81122537>] kmem_cache_alloc+0x9a/0x185 > PGD 0 > Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC > last sysfs file: > CPU 1 > Modules linked in: > Pid: 12, comm: khelper Not tainted 2.6.31-tip-05525-g0eeacc6-dirty #14819 System Product Name > RIP: 0010:[<ffffffff81122537>] [<ffffffff81122537>] kmem_cache_alloc+0x9a/0x185 > RSP: 0018:ffff88003f9258b0 EFLAGS: 00010086 > RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000078c0129e > RDX: 0000000000000000 RSI: ffffffff8130b626 RDI: ffffffff81122528 > RBP: ffff88003f925900 R08: 0000000078c0129e R09: 0000000000000001 > R10: 0000000000000000 R11: 0000000078c0129e R12: 0000000000000246 > R13: 0000000000008020 R14: ffff88003f8586d8 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff880002b00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 0000000000000000 CR3: 0000000001001000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: ffffffff827bd420 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process khelper (pid: 12, threadinfo ffff88003f924000, task ffff88003f928000) > Stack: > 0000000000000246 0000802000000246 ffffffff8130b626 0000000000000001 > <0> 0000000078c0129e 0000000000000000 ffff88003f925a70 0000000000000002 > <0> 0000000000000001 0000000000000001 ffff88003f925960 ffffffff8130b626 > Call Trace: > [<ffffffff8130b626>] ? avc_alloc_node+0x36/0x273 > [<ffffffff8130b626>] avc_alloc_node+0x36/0x273 > [<ffffffff8130b545>] ? avc_latest_notif_update+0x7d/0x9e > [<ffffffff8130b8b4>] avc_insert+0x51/0x18d > [<ffffffff8130bcce>] avc_has_perm_noaudit+0x9d/0x128 > [<ffffffff8130bf20>] avc_has_perm+0x45/0x88 > [<ffffffff8130f99d>] current_has_perm+0x52/0x6d > [<ffffffff8130fbb2>] selinux_task_create+0x2f/0x45 > [<ffffffff81303bf7>] security_task_create+0x29/0x3f > [<ffffffff8105c6ba>] copy_process+0x82/0xdf0 > [<ffffffff81091578>] ? register_lock_class+0x2f/0x36c > [<ffffffff81091a13>] ? mark_lock+0x2e/0x1e1 > [<ffffffff8105d596>] do_fork+0x16e/0x382 > [<ffffffff81091578>] ? register_lock_class+0x2f/0x36c > [<ffffffff810d9166>] ? probe_workqueue_execution+0x57/0xf9 > [<ffffffff81091a13>] ? mark_lock+0x2e/0x1e1 > [<ffffffff810d9166>] ? probe_workqueue_execution+0x57/0xf9 > [<ffffffff8100cdb2>] kernel_thread+0x82/0xe0 > [<ffffffff81078b1f>] ? ____call_usermodehelper+0x0/0x139 > [<ffffffff8100ce10>] ? child_rip+0x0/0x20 > [<ffffffff81078aea>] ? __call_usermodehelper+0x65/0x9a > [<ffffffff8107a5c7>] run_workqueue+0x171/0x27e > [<ffffffff8107a573>] ? run_workqueue+0x11d/0x27e > [<ffffffff81078a85>] ? __call_usermodehelper+0x0/0x9a > [<ffffffff8107a7bc>] worker_thread+0xe8/0x10f > [<ffffffff810808e2>] ? autoremove_wake_function+0x0/0x63 > [<ffffffff8107a6d4>] ? worker_thread+0x0/0x10f > [<ffffffff8108042e>] kthread+0x91/0x99 > [<ffffffff8100ce1a>] child_rip+0xa/0x20 > [<ffffffff8100c754>] ? restore_args+0x0/0x30 > [<ffffffff8108039d>] ? kthread+0x0/0x99 > [<ffffffff8100ce10>] ? child_rip+0x0/0x20 > Code: 0f 85 99 00 00 00 9c 58 66 66 90 66 90 49 89 c4 fa 66 66 90 66 66 90 e8 83 34 fb ff e8 d7 e9 26 00 48 98 49 8b 94 c6 10 01 00 00 <48> 8b 1a 44 8b 7a 18 48 85 db 74 0f 8b 42 14 48 8b 04 c3 ff 42 > RIP [<ffffffff81122537>] kmem_cache_alloc+0x9a/0x185 > RSP <ffff88003f9258b0> > CR2: 0000000000000000 > ---[ end trace 42f41a982344e606 ]--- > Kernel panic - not syncing: Fatal exception > > config and full crashlog attached as well. > > Ingo
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