On Wed, Sep 30, 2009 at 06:57:00PM -0700, Linus Torvalds wrote: > > > On Thu, 1 Oct 2009, Markus Trippelsdorf wrote: > > > > Running latest git I get the following kernel BUG message: > > > > ------------[ cut here ]------------ > > Kernel BUG at ffffffff810efa89 [verbose debug info unavailable] > > You really shouldn't turn off verbose debug info unless you are _really_ > tight on memory in some embedded device. It's not that complex, nor does > it use a lot of memory, and it makes the error report much harder to > figure out when the verbose debug output information isn't available. > > But in this case I can do it by just looking at the function/offset: > > > RIP: 0010:[<ffffffff810efa89>] [<ffffffff810efa89>] ext4_num_dirty_pages+0x113/0x213 > > The only BUG_ON() that seems relevant in that function (at least with the > config I tried with) ends up being > > fs/ext4/inode.c:1184 > > in my sources, which is from "page_buffers(page)", which has a > > BUG_ON(!PagePrivate(page)); > > in it. And that would have been much easier to figure out if you had had > CONFIG_DEBUG_BUGVERBOSE enabled.. > You're right (with CONFIG_DEBUG_BUGVERBOSE=y): ------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:1184! ... > Now over to the ext4 people to actually hopefully _solve_ the bug. Maybe > bisection would help. -- Markus -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
