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This is my function : static spinlock_t xgr_learn_lock = SPIN_LOCK_UNLOCKED; static int piga_seq_cpt = 1; /* * Function called for each systemcall (Hook SELinux avc function) */ int piga_control(u32 ssid, ...., struct av_decision * avd) { /* * Here my hypercall work but block my vm with this error : * " BUG: scheduling while atomic ... " */ spin_lock_bh(&xgr_learn_lock); if ( in_atomic()) kvm_hypercall2 ( 6, (unsigned long)2 ,(unsigned long)piga_seq_cpt); spin_unlock_bh(&xgr_learn_lock); if (piga_on == 1) { /* * Here my hypercall make a kernel panic with this error: * " divide error: 0000 [#1] SMP" */ spin_lock_bh(&xgr_learn_lock); set_current_state(TASK_UNINTERRUPTIBLE); kvm_hypercall2 ( 6, (unsigned long)2 ,(unsigned long)piga_seq_cpt); set_current_state(TASK_RUNNING); spin_lock_bh(&xgr_learn_lock); } } > Date: Wed, 8 Jun 2011 15:52:33 +0530 > Subject: Re: Problems with hypercalls > From: fs.rajat@xxxxxxxxx > To: mulyadi.santosa@xxxxxxxxx > CC: tricheurs@xxxxxxxxxx; kernelnewbies@xxxxxxxxxxxxxxxxx > > are you doing 64bit devision on 32 bit arch? If that is the case, > do_div is worth considering. > > On Wed, Jun 8, 2011 at 3:25 PM, Mulyadi Santosa > <mulyadi.santosa@xxxxxxxxx> wrote: > > On Tue, Jun 7, 2011 at 15:39, emilie lefebvre <tricheurs@xxxxxxxxxx> wrote: > >> "divide error: 0000 [#1] SMP > >> ... > >> [<ffffffff813f8cdd>] panic+0x78/0x137 > >> [<ffffffff813fcb94>] oops_end+0xe4/0x100 > >> [<ffffffff8101021b>] die+0x5b/0x90 > >> [<ffffffff813fc444>] do_trap+0xc4/0x160 > >> [<ffffffff8100df2f>] do_divide_error+0x8f/0xb0 > >> [<ffffffff811f974c>] ? my_function+0xdc/0xe70 " > >> > >> Could you have any suggestions ? > > > > Could you show us your code? perhaps by pasting them somewhere? > > > > >From what I guess, sounds like your code did some math (directly or > > indirectly) that fiddle with floating point numbers? > > > > > > -- > > regards, > > > > Mulyadi Santosa > > Freelance Linux trainer and consultant > > > > blog: the-hydra.blogspot.com > > training: mulyaditraining.blogspot.com > > > > _______________________________________________ > > Kernelnewbies mailing list > > Kernelnewbies@xxxxxxxxxxxxxxxxx > > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies |
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