On Tue, Jan 29 2008, Luck, Tony wrote: > I pulled Linus' tree this morning (git head = > 0ba6c33bcddc64a54b5f1c25a696c4767dc76292) > and built for ia64 (using arch/ia64/configs/tiger_defconfig). System booted > OK, but when I stressed it a little (building another kernel with "make -j32") > it hung. > > The console has a bunch (98) of warnings about tasks blocked for more than 120 > seconds like this: > INFO: task grep:9168 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > > Call Trace: > [<a000000100704120>] schedule+0x11c0/0x1340 > sp=e0000001ed8afbf0 bsp=e0000001ed8a1280 > [<a00000010024e720>] do_get_write_access+0x660/0xbe0 > sp=e0000001ed8afc20 bsp=e0000001ed8a1208 > [<a00000010024f060>] journal_get_write_access+0x40/0x80 > sp=e0000001ed8afca0 bsp=e0000001ed8a11c8 > [<a000000100245db0>] __ext3_journal_get_write_access+0x30/0xa0 > sp=e0000001ed8afca0 bsp=e0000001ed8a1190 > [<a00000010022dea0>] ext3_reserve_inode_write+0x80/0x120 > sp=e0000001ed8afca0 bsp=e0000001ed8a1158 > [<a00000010022df70>] ext3_mark_inode_dirty+0x30/0x80 > sp=e0000001ed8afca0 bsp=e0000001ed8a1130 > [<a000000100232530>] ext3_dirty_inode+0xd0/0x120 > sp=e0000001ed8afcc0 bsp=e0000001ed8a1100 > [<a000000100170e20>] __mark_inode_dirty+0xa0/0x3e0 > sp=e0000001ed8afcc0 bsp=e0000001ed8a10b0 > [<a00000010015b570>] touch_atime+0x310/0x340 > sp=e0000001ed8afcc0 bsp=e0000001ed8a1088 > [<a0000001000d6c20>] do_generic_mapping_read+0x780/0x7a0 > sp=e0000001ed8afce0 bsp=e0000001ed8a0fe0 > [<a0000001000db250>] generic_file_aio_read+0x290/0x340 > sp=e0000001ed8afce0 bsp=e0000001ed8a0f80 > [<a00000010012c990>] do_sync_read+0x170/0x200 > sp=e0000001ed8afd10 bsp=e0000001ed8a0f40 > [<a00000010012cbd0>] vfs_read+0x1b0/0x2e0 > sp=e0000001ed8afe20 bsp=e0000001ed8a0ef0 > [<a00000010012d250>] sys_read+0x70/0xe0 > sp=e0000001ed8afe20 bsp=e0000001ed8a0e78 > [<a00000010000a4a0>] ia64_ret_from_syscall+0x0/0x20 > sp=e0000001ed8afe30 bsp=e0000001ed8a0e78 > > > [The stack trace has several variations ... some from sys_read(), some from > sys_open(), some from sys_execve(), some from sys_mmap() etc. 84/98 stack > traces pass through the touch_atime->__mark_inode_dirty path ... all 98 > are attached] > > A quick dig into processor state shows 8 cpus are idle. 7 are spinning > in __spin_lock_irq() from __make_request() and one is in spin_lock() from > as_merged_requests().
Looks like a deadlock on queue lock and ioc lock, but I don't see immediately what the problem is. I can't stick around for longer tonight, but I'll get to the bottom of this tomorrow. -- Jens Axboe -- 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/
