On 2011.11.21 at 17:34 +0100, Markus Trippelsdorf wrote: > On 2011.11.21 at 17:10 +0100, Markus Trippelsdorf wrote: > > On 2011.11.21 at 16:48 +0100, Eric Dumazet wrote: > > > Le lundi 21 novembre 2011 à 16:36 +0100, Markus Trippelsdorf a écrit : > > > > On 2011.11.21 at 15:16 +0100, Eric Dumazet wrote: > > > > > Le lundi 21 novembre 2011 à 14:15 +0100, Markus Trippelsdorf a écrit : > > > > > > > > > > > I've enabled CONFIG_SLUB_DEBUG_ON and this is what happend: > > > > > > > > > > > > > > > > Thanks > > > > > > > > > > Please continue to provide more samples. > > > > > > > > > > There is something wrong somewhere, but where exactly, its hard to say. > > > > > > > > New sample. This one points to lib/idr.c: > > > > > > > > ============================================================================= > > > > BUG idr_layer_cache: Poison overwritten > > > > ----------------------------------------------------------------------------- > > > > > > Thanks, could you now add "CONFIG_DEBUG_PAGEALLOC=y" in your config as > > > well ? > > > > Sure. This one happend with CONFIG_DEBUG_PAGEALLOC=y: > > > > ============================================================================= > > BUG task_struct: Poison overwritten > > ----------------------------------------------------------------------------- > > And sometimes this one that I've reported earlier already: > > (see: http://thread.gmane.org/gmane.linux.kernel/1215023 ) > > ------------[ cut here ]------------ > WARNING: at fs/sysfs/sysfs.h:195 sysfs_get_inode+0x136/0x140() > Hardware name: System Product Name > Pid: 1876, comm: slabinfo Not tainted 3.2.0-rc2-00274-g6fe4c6d #72 > Call Trace: > [<ffffffff8106cac5>] warn_slowpath_common+0x75/0xb0 > [<ffffffff8106cbc5>] warn_slowpath_null+0x15/0x20 > [<ffffffff81163236>] sysfs_get_inode+0x136/0x140 > [<ffffffff81164cef>] sysfs_lookup+0x6f/0x110 > [<ffffffff811173f9>] d_alloc_and_lookup+0x39/0x80 > [<ffffffff81118774>] do_lookup+0x294/0x3a0 > [<ffffffff8111798a>] ? inode_permission+0x7a/0xb0 > [<ffffffff8111a3f7>] do_last.isra.46+0x137/0x7f0 > [<ffffffff8111ab76>] path_openat+0xc6/0x370 > [<ffffffff81117606>] ? getname_flags+0x36/0x230 > [<ffffffff810ec852>] ? handle_mm_fault+0x192/0x290 > [<ffffffff8111ae5c>] do_filp_open+0x3c/0x90 > [<ffffffff81127c8c>] ? alloc_fd+0xdc/0x120 > [<ffffffff8110ce77>] do_sys_open+0xe7/0x1c0 > [<ffffffff8110cf6b>] sys_open+0x1b/0x20 > [<ffffffff814ccb7b>] system_call_fastpath+0x16/0x1b > ---[ end trace b1377eb8b131d37d ]--- Hm, the "sysfs: use rb-tree" thing hit again during boot. Could this be the root cause of this all? I wrote down the following: RIP : rb_next Trace: sysfs_dir_pos sysfs_readdir ? sys_ioctl vfs_readdir sys_getdents -- Markus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>