Messages in this thread | | | Date | Wed, 8 Jun 2011 13:09:20 -0700 (PDT) | From | David Rientjes <> | Subject | Re: 3.0.0-rc2-git1 -- BUG: sleeping function called from invalid context at mm/slub.c:847 |
| |
On Wed, 8 Jun 2011, Miles Lane wrote:
> BUG: sleeping function called from invalid context at mm/slub.c:847 > in_atomic(): 1, irqs_disabled(): 0, pid: 1583, name: cupsd > 2 locks held by cupsd/1583: > #0: (tasklist_lock){.+.+.+}, at: [<ffffffff8104dafa>] do_prlimit+0x61/0x189 > #1: (&(&p->alloc_lock)->rlock){+.+.+.}, at: [<ffffffff8104db2d>] > do_prlimit+0x94/0x189 > Pid: 1583, comm: cupsd Not tainted 3.0.0-rc2-git1 #7 > Call Trace: > [<ffffffff8102ebf2>] __might_sleep+0x10d/0x112 > [<ffffffff810e6f46>] slab_pre_alloc_hook.isra.49+0x2d/0x33 > [<ffffffff810e7bc4>] kmem_cache_alloc+0x22/0x132 > [<ffffffff8105b6e6>] prepare_creds+0x35/0xe4 > [<ffffffff811c0675>] aa_replace_current_profile+0x35/0xb2 > [<ffffffff811c4d2d>] aa_current_profile+0x45/0x4c > [<ffffffff811c4d4d>] apparmor_task_setrlimit+0x19/0x3a > [<ffffffff811beaa5>] security_task_setrlimit+0x11/0x13 > [<ffffffff8104db6b>] do_prlimit+0xd2/0x189 > [<ffffffff8104dea9>] sys_setrlimit+0x3b/0x48 > [<ffffffff814062bb>] system_call_fastpath+0x16/0x1b >
Not sure why this ever actually worked with apparmor if prepare_creds() does an unconditional GFP_KERNEL allocation since this codepath hasn't changed in at least a year and we're holding a spinlock from setrlimit. John?
| |