Bugzilla – Bug 570316
The Swapper causes backtrace while booting - but seems to work after the boot processes are done
Last modified: 2010-01-13 15:56:31 UTC
Created attachment 336391 [details] Output of dmesg User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.6) Gecko/20091201 SUSE/3.5.6-1.1.1 Firefox/3.5.6 While the system is booting several messages are shown like: "BUG: scheduling while atomic: swapper/0/0x10000002" Followed by kernel stack trace. After the system is booted everything looks ok, the swapper seems to be working fine nevertheless. Reproducible: Always Steps to Reproduce: 1. Install kernel 2.6.31.8-0.1-desktop 2. Reboot the machine 3. Run dmesg to see what happened after unpacking the initrd. Actual Results: [ 0.169806] Unpacking initramfs... [ 0.177375] BUG: scheduling while atomic: swapper/0/0x10000002 [ 0.177415] Modules linked in: [ 0.177421] Pid: 0, comm: swapper Not tainted 2.6.31.8-0.1-desktop #1 [ 0.177424] Call Trace: [ 0.177447] [<c020845a>] try_stack_unwind+0x17a/0x1a0 [ 0.177457] [<c020708c>] dump_trace+0x6c/0x130 [ 0.177466] [<c0208008>] show_trace_log_lvl+0x58/0x80 [ 0.177474] [<c0208056>] show_trace+0x26/0x40 [ 0.177482] [<c0692e53>] dump_stack+0x79/0x91 [ 0.177491] [<c023f137>] __schedule_bug+0x87/0x90 [ 0.177499] [<c0693b88>] schedule+0x688/0x7a0 [ 0.177507] [<c02480eb>] __cond_resched+0x2b/0x60 [ 0.177514] [<c0693dfd>] _cond_resched+0x3d/0x50 [ 0.177522] [<c02d3adc>] generic_perform_write+0x13c/0x1e0 [ 0.177530] [<c02d3bfb>] generic_file_buffered_write+0x7b/0x150 [ 0.177537] [<c02d55c3>] __generic_file_aio_write_nolock+0x213/0x530 [ 0.177545] [<c02d5a15>] generic_file_aio_write+0x65/0xe0 [ 0.177552] [<c031538c>] do_sync_write+0xdc/0x130 [ 0.177559] [<c03156ba>] vfs_write+0xba/0x1b0 [ 0.177566] [<c03160c3>] sys_write+0x53/0xa0 [ 0.177575] [<c0981627>] do_copy+0xa1/0xe6 [ 0.177582] [<c0980f6b>] flush_buffer+0x81/0xb8 [ 0.177590] [<c09a770d>] gunzip+0x374/0x428 [ 0.177598] [<c098147b>] unpack_to_rootfs+0x29f/0x3aa [ 0.177605] [<c0981ef9>] populate_rootfs+0x59/0x87 [ 0.177612] [<c097fcd3>] start_kernel+0x38d/0x3ae [ 0.177619] [<c097f087>] i386_start_kernel+0x87/0x9f [ 0.177375] BUG: scheduling while atomic: swapper/0/0x10000002 [ 0.177415] Modules linked in: [ 0.177421] Pid: 0, comm: swapper Not tainted 2.6.31.8-0.1-desktop #1 [ 0.177424] Call Trace: [ 0.177447] [<c020845a>] try_stack_unwind+0x17a/0x1a0 [ 0.177457] [<c020708c>] dump_trace+0x6c/0x130 [ 0.177466] [<c0208008>] show_trace_log_lvl+0x58/0x80 [ 0.177474] [<c0208056>] show_trace+0x26/0x40 [ 0.177482] [<c0692e53>] dump_stack+0x79/0x91 [ 0.177491] [<c023f137>] __schedule_bug+0x87/0x90 [ 0.177499] [<c0693b88>] schedule+0x688/0x7a0 [ 0.177507] [<c02480eb>] __cond_resched+0x2b/0x60 [ 0.177514] [<c0693dfd>] _cond_resched+0x3d/0x50 [ 0.177522] [<c02d3adc>] generic_perform_write+0x13c/0x1e0 [ 0.177530] [<c02d3bfb>] generic_file_buffered_write+0x7b/0x150 [ 0.177537] [<c02d55c3>] __generic_file_aio_write_nolock+0x213/0x530 [ 0.177545] [<c02d5a15>] generic_file_aio_write+0x65/0xe0 [ 0.177552] [<c031538c>] do_sync_write+0xdc/0x130 [ 0.177559] [<c03156ba>] vfs_write+0xba/0x1b0 [ 0.177566] [<c03160c3>] sys_write+0x53/0xa0 [ 0.177575] [<c0981627>] do_copy+0xa1/0xe6 [ 0.177582] [<c0980f6b>] flush_buffer+0x81/0xb8 [ 0.177590] [<c09a770d>] gunzip+0x374/0x428 [ 0.177598] [<c098147b>] unpack_to_rootfs+0x29f/0x3aa [ 0.177605] [<c0981ef9>] populate_rootfs+0x59/0x87 [ 0.177612] [<c097fcd3>] start_kernel+0x38d/0x3ae [ 0.177619] [<c097f087>] i386_start_kernel+0x87/0x9f Expected Results: [ 2.371571] Unpacking initramfs... [ 2.561621] Freeing initrd memory: 6046k freed [ 2.566445] Scanning for low memory corruption every 60 seconds problematic packages: kernel-desktop-2.6.31.8-0.1.1.i586.rpm preload-kmp-desktop-1.1_2.6.31.8-0.1.1.i586.rpm working packages: kernel-desktop-2.6.31.5-0.1.1.i586.rpm preload-kmp-desktop-1.1_2.6.31.5_0.1-6.8.1.i586.rpm I could not detect any _real_ problems yet, since I have enough memory installed on my machine so I rarely use the swap space.
During the automatic installation I prepared for another host the whole system freezes right after the main package installation. Shutting down the machine manually with pressing the powerbutton, and booting it normally, helped a little. So this problem occurs with the default kernel as well.
Marking as duplicate of bug #568120. *** This bug has been marked as a duplicate of bug 568120 ***