On Tue, Feb 12, 2008 at 02:04:30PM -0800, Andrew Morton wrote: > On Sun, 10 Feb 2008 17:00:31 +0300 > Alexey Dobriyan <[EMAIL PROTECTED]> wrote: > > > This happened during LTP. FWIW, modprobe/rmmod trivial empty module > > together with cat /proc/*/wchan and cat /proc/modules were also running. > > > > Box is E6400, much debugging is on, config below. > > > > > > [ 4057.310000] BUG: unable to handle kernel paging request at > > ffff810101dbc008 > > [ 4057.310000] IP: [<ffffffff802596c8>] iov_iter_advance+0x38/0x70 > > [ 4057.310000] PGD 8063 PUD c063 PMD 153baa163 PTE 8000000101dbc160 > > [ 4057.310000] Oops: 0000 [1] SMP DEBUG_PAGEALLOC > > [ 4057.310000] CPU 0 > > [ 4057.310000] Modules linked in: [last unloaded: foo] > > what is this foo.ko of which you speak, and did it wreck your kernel?
It's a trivial dumb module which does nothing but loads and unloads. I redid ftest03 later without any suspicious activity and it oopsed the same way. Don't worry about it. > > [ 4057.310000] Pid: 7035, comm: ftest03 Not tainted > > 2.6.24-25f666300625d894ebe04bac2b4b3aadb907c861 #2 > > [ 4057.310000] RIP: 0010:[<ffffffff802596c8>] [<ffffffff802596c8>] > > iov_iter_advance+0x38/0x70 > > [ 4057.310000] RSP: 0018:ffff810110329b20 EFLAGS: 00010246 > > [ 4057.310000] RAX: 0000000000000000 RBX: 0000000000000800 RCX: > > 0000000000000000 > > [ 4057.310000] RDX: 0000000000000000 RSI: 0000000000000800 RDI: > > ffff810110329ba8 > > [ 4057.310000] RBP: 0000000000000800 R08: 0000000000000000 R09: > > ffff810101dbc000 > > [ 4057.310000] R10: 0000000000000004 R11: 0000000000000000 R12: > > 0000000000026000 > > [ 4057.310000] R13: ffff81010d765c98 R14: 0000000000001000 R15: > > 0000000000000000 > > [ 4057.310000] FS: 00007fee589146d0(0000) GS:ffffffff80501000(0000) > > knlGS:0000000000000000 > > [ 4057.310000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > [ 4057.310000] CR2: ffff810101dbc008 CR3: 00000001103da000 CR4: > > 00000000000006e0 > > [ 4057.310000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > > 0000000000000000 > > [ 4057.310000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > > 0000000000000400 > > [ 4057.310000] Process ftest03 (pid: 7035, threadinfo ffff810110328000, > > task ffff810160b00000) > > [ 4057.310000] Stack: ffffffff8025b413 ffff81010d765ab0 ffffffff804e6fd8 > > 00000000001201d2 > > [ 4057.310000] ffff810110329db8 0000000000026000 ffff810110329d38 > > ffff81017b9fb500 > > [ 4057.310000] ffff81010d765c98 ffffffff804175e0 ffff81010d765ab0 > > 0000000000000000 > > [ 4057.310000] Call Trace: > > [ 4057.310000] [<ffffffff8025b413>] ? > > generic_file_buffered_write+0x1e3/0x6f0 > > [ 4057.310000] [<ffffffff8022f4ae>] ? current_fs_time+0x1e/0x30 > > [ 4057.310000] [<ffffffff8025bbaf>] ? > > __generic_file_aio_write_nolock+0x28f/0x440 > > [ 4057.310000] [<ffffffff8025bdc3>] ? generic_file_aio_write+0x63/0xd0 > > [ 4057.310000] [<ffffffff802bfbc3>] ? ext3_file_write+0x23/0xc0 > > [ 4057.310000] [<ffffffff802bfba0>] ? ext3_file_write+0x0/0xc0 > > [ 4057.310000] [<ffffffff8027ebeb>] ? do_sync_readv_writev+0xcb/0x110 > > [ 4057.310000] [<ffffffff8023f2b0>] ? autoremove_wake_function+0x0/0x30 > > [ 4057.310000] [<ffffffff8024be8d>] ? debug_check_no_locks_freed+0x7d/0x130 > > [ 4057.310000] [<ffffffff8024bd8f>] ? trace_hardirqs_on+0xcf/0x150 > > [ 4057.310000] [<ffffffff8027c265>] ? __kmalloc+0x15/0xc0 > > [ 4057.310000] [<ffffffff8027ea4d>] ? rw_copy_check_uvector+0x9d/0x130 > > [ 4057.310000] [<ffffffff8027f330>] ? do_readv_writev+0xe0/0x170 > > [ 4057.310000] [<ffffffff803fb5e7>] ? mutex_lock_nested+0x1a7/0x280 > > [ 4057.310000] [<ffffffff8024bd8f>] ? trace_hardirqs_on+0xcf/0x150 > > [ 4057.310000] [<ffffffff803fb389>] ? __mutex_unlock_slowpath+0xc9/0x170 > > [ 4057.310000] [<ffffffff8024bd8f>] ? trace_hardirqs_on+0xcf/0x150 > > [ 4057.310000] [<ffffffff803fc6ba>] ? trace_hardirqs_on_thunk+0x35/0x3a > > [ 4057.310000] [<ffffffff8027f7c3>] ? sys_writev+0x53/0x90 > > [ 4057.310000] [<ffffffff8020b39b>] ? system_call_after_swapgs+0x7b/0x80 > > [ 4057.310000] > > [ 4057.310000] > > [ 4057.310000] Code: 48 01 77 10 48 29 77 18 c3 0f 0b eb fe 66 66 90 66 66 > > 90 4c 8b 0f 48 8b 4f 10 49 89 f0 eb 07 66 66 66 90 49 29 c0 4d 85 c0 75 07 > > <49> 83 79 08 00 75 23 49 8b 51 08 48 89 d0 48 29 c8 49 39 c0 49 > > [ 4057.310000] RIP [<ffffffff802596c8>] iov_iter_advance+0x38/0x70 > > [ 4057.310000] RSP <ffff810110329b20> > > [ 4057.310000] CR2: ffff810101dbc008 > > [ 4057.310000] Kernel panic - not syncing: Fatal exception > > because this has me stumped. It might need bisecting, please. OK. > Nick, can you think of anything around there which we changed? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
