The latest UP git kernels have been stable for me on my ss20s so I
decided to try SMP to see how well that goes. I tried two
systems: ss20 with 2 sm81s and an ss20 with one dual
125Mhz hypersparc. The hypersparc system has issues
even with debian UP stable kernel but seemed better with current
git UP kernel.
I found lock warnings on both systems when running
current git SMP kernel. Can anyone give me advice on how to
go about debugging these problems?
ss20 with two sm81s running debian stable and latest git kernel
Aug 18 14:40:33 ss20-1 kernel: BUG: rwlock wrong owner on CPU#0, dpkg/8732, fa69ce60
Aug 18 14:40:33 ss20-1 kernel: [f009f4d4 : __set_page_dirty+0x10c/0x124 ]
[f009f624 : __block_commit_write+0x80/0xc0 ]
[f009f6a4 : generic_commit_write+0x40/0x9c ]
[fe6ea888 : ext3_ordered_commit_write+0xc4/0x104 [ext3] ]
[f005a97c : generic_file_buffered_write+0x5d4/0x864 ]
[f005b0cc : __generic_file_aio_write_nolock+0x4c0/0x508 ]
[f005b178 : generic_file_aio_write+0x64/0xdc ]
[fe6e5db8 : ext3_file_write+0x28/0xd0 [ext3] ]
[f007b674 : do_sync_write+0x94/0xd0 ]
[f007bea0 : vfs_write+0xa8/0x140 ]
[f007c61c : sys_write+0x38/0x64 ]
[f001570c : syscall_is_too_hard+0x3c/0x40 ]
[500f2a00 : 0x500f2a08 ]
ss20 with single dual hypersparc 125 running debian stable and latest git kernel
Aug 18 15:28:54 ss20-2 kernel: BUG: rwlock wrong owner on CPU#0, swapper/0, fbc23280
Aug 18 15:28:54 ss20-2 kernel: [f005fe9c : test_clear_page_writeback+0x9c/0xd4 ]
[f005936c : end_page_writeback+0x3c/0x70 ]
[f00a130c : end_buffer_async_write+0x180/0x1c0 ]
[f00a117c : end_bio_bh_io_sync+0x58/0x68 ]
[f00a27cc : bio_endio+0x80/0x88 ]
[f00df424 : __end_that_request_first+0x128/0x4dc ]
[fe646eec : scsi_end_request+0x20/0xe4 [scsi_mod] ]
[fe647168 : scsi_io_completion+0x148/0x430 [scsi_mod] ]
[fe633328 : sd_rw_intr+0x2f4/0x328 [sd_mod] ]
[fe641568 : scsi_finish_command+0x88/0x90 [scsi_mod] ]
[f00de9c4 : blk_done_softirq+0x88/0xa4 ]
[f003b7d8 : __do_softirq+0x64/0x118 ]
[f003b8d8 : do_softirq+0x4c/0x5c ]
[f00178a8 : handler_irq+0x120/0x148 ]
[f00149e0 : patch_handler_irq+0x8/0x24 ]
[f0018d74 : cpu_idle+0x34/0x38 ]
