On Wed, 2006-11-15 at 23:36 +0100, Jan Kiszka wrote: > Philippe Gerum wrote: > > On Wed, 2006-11-15 at 22:01 +0100, Jan Kiszka wrote: > > > >> /me unfortunately failed to reproduce your problem here. Instead, I > >> found a regression in SVN head - different story for a different thread. > >> > > > > It's reproducible here. This bug triggers if you leave enough time > > between queue creation and deletion for Linux to deal with its usual > > business, like running workqueues... Additionally, this bug would not > > trigger with different queue names passed to the creation routines. It > > seems to be caused by out-of-sequence create/delete requests of /proc > > entries relayed to the proc_fs subsystem, which does not perform any > > sanity checks on the data it is submitted. > > > > Yes, that delay makes the difference. I just added a huge one (100 > ticks), and now I get tones of this: > > > xenomai 2.2.4 timer-test > > task shadow:0 > > timer set mode:0 > > task sleep:0 > > testing XENOMAI q-functions > > Bad page state in process 'maintask' > > page:c10e8b20 flags:0x80000400 mapping:00000000 mapcount:0 count:0 > > Trying to fix it up, but a reboot is needed > > Backtrace: > > <c0103055> show_trace+0x12/0x14 <c01035e0> dump_stack+0x1c/0x1e > > <c0157104> bad_page+0x49/0x73 <c01577d8> free_hot_cold_page+0x68/0x13d > > <c01578fb> free_hot_page+0xf/0x11 <c0157a17> __free_pages+0x2e/0x39 > > <c01646f2> __vunmap+0x90/0xbc <c01647c4> vfree+0x2e/0x30 > > <c01388ca> xnheap_destroy_mapped+0xe2/0x11b <c8887d93> > > rt_queue_delete+0xb5/0xf2 [xeno_native] > > <c88836d9> __rt_queue_delete+0x4e/0x72 [xeno_native] <c0141b20> > > losyscall_event+0xa3/0x145 > > <c013594f> __ipipe_dispatch_event+0xac/0x16c <c0109fd2> > > __ipipe_syscall_root+0x78/0x100 > > <c02a5520> system_call+0x20/0x38 > > Is this also what you see? Looks quite different on first sight. [Note: > it's on a qemu box.] >
Uh, no. Try removing the second part of your heap patch, regarding the memory unreservation routine. -- Philippe. _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
