From: rct@gherkin.frus.com (Bob Tracy)
To: Jens Axboe <jens.axboe@oracle.com>
Cc: James.Bottomley@SteelEye.com, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, alan@lxorguk.ukuu.org.uk
Subject: Re: BAD_SG_DMA panic in aha1542
Date: Tue, 1 May 2007 08:42:00 -0500 (CDT) [thread overview]
Message-ID: <20070501134200.D669ADBA1@gherkin.frus.com> (raw)
In-Reply-To: <20070501133312.GD4653@kernel.dk> "from Jens Axboe at May 1, 2007 03:33:12 pm"
Jens Axboe wrote:
> Try Alan's patch, it should fix it. As mentioned earlier in this thread,
> the real fix is to get rid of the cgc stuff and inject into the block
> layer from cdrom.c. But Alan's patch should work-around the issue for
> now.
Trying that patch is the next thing on my plate. For now, here's the
dmesg output James requested (aha1542 debug patch). Oddly enough, when
the smoke cleared, the mount succeeded and I could access the cd :-).
Initial state: SCSI cdrom drivers not loaded.
Command: "mount -t iso9660 /dev/scd0 /mnt/cdrom -r"
sr0: scsi3-mmc drive: 16x/16x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 1:0:4:0: Attached scsi CD-ROM sr0
sgpnt[0:1] page c3489af0/0x3489af0 length 32
BUG: warning at drivers/scsi/aha1542.c:78/BAD_SG_DMA()
[<c4819858>] aha1542_queuecommand+0x4a4/0x4ce [aha1542]
[<c4833317>] scsi_done+0x0/0x16 [scsi_mod]
[<c48339f2>] scsi_dispatch_cmd+0x1b0/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a09d4>] __generic_unplug_device+0x1d/0x1f
[<c01a0a3a>] blk_execute_rq_nowait+0x64/0x6a
[<c01a0aae>] blk_execute_rq+0x6e/0x8f
[<c01a02d0>] blk_end_sync_rq+0x0/0x1d
[<c01354c9>] mempool_alloc+0x1c/0x97
[<c014d2fc>] bio_phys_segments+0xe/0x14
[<c019f456>] blk_rq_bio_prep+0x28/0x7c
[<c483744f>] scsi_execute+0xc6/0xd9 [scsi_mod]
[<c4942da2>] sr_do_ioctl+0x80/0x1bd [sr_mod]
[<c483439d>] scsi_set_medium_removal+0x43/0x67 [scsi_mod]
[<c494209b>] sr_packet+0x1a/0x1f [sr_mod]
[<c49aad25>] cdrom_open+0x337/0x8ae [cdrom]
[<c0275aaf>] wait_for_completion+0x5b/0x84
[<c0111cba>] default_wake_function+0x0/0xc
[<c0120312>] call_usermodehelper_keys+0xa6/0xb2
[<c012031e>] __call_usermodehelper+0x0/0x43
[<c012049b>] request_module+0xc2/0xd0
[<c01a9b71>] kobject_get+0xf/0x13
[<c4942324>] sr_block_open+0x74/0x81 [sr_mod]
[<c014ec4f>] do_open+0x8a/0x313
[<c4837b01>] scsi_request_fn+0x273/0x2ac [scsi_mod]
[<c0275d9f>] io_schedule+0xe/0x16
[<c0276065>] __wait_on_bit+0x50/0x58
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c02760cf>] out_of_line_wait_on_bit+0x62/0x6a
[<c0122cf0>] wake_bit_function+0x0/0x3c
[<c014ace5>] __wait_on_buffer+0x1c/0x1f
[<c48852e1>] __ext3_get_inode_loc+0x263/0x2b1 [ext3]
[<c015bbd6>] d_splice_alias+0xa9/0xc3
[<c488b470>] ext3_lookup+0x98/0xb8 [ext3]
[<c0153018>] do_lookup+0x4f/0x135
[<c015b1cb>] dput+0x1a/0x10b
[<c0154e0d>] __link_path_walk+0xa5d/0xba8
[<c014ef2d>] blkdev_get+0x55/0x60
[<c014f212>] open_bdev_excl+0x32/0x6e
[<c014e1f8>] get_sb_bdev+0x14/0x115
[<c49934c1>] isofs_get_sb+0x12/0x16 [isofs]
[<c4993987>] isofs_fill_super+0x0/0x899 [isofs]
[<c014df0a>] vfs_kern_mount+0x88/0xfd
[<c014dfb2>] do_kern_mount+0x26/0x36
[<c015eee2>] do_mount+0x589/0x5fb
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c0155007>] link_path_walk+0xaf/0xb9
[<c013c4fc>] __handle_mm_fault+0x341/0x620
[<c01552c4>] do_path_lookup+0x195/0x1b5
[<c013c342>] __handle_mm_fault+0x187/0x620
[<c0136236>] get_page_from_freelist+0x6e/0x2bb
[<c0136ae6>] __get_free_pages+0x25/0x3e
[<c015de80>] copy_mount_options+0x27/0x10a
[<c015efbe>] sys_mount+0x6a/0xa2
[<c0102a47>] syscall_call+0x7/0xb
sgpnt[0:1] page c3489af0/0x3489af0 length 32
BUG: warning at drivers/scsi/aha1542.c:78/BAD_SG_DMA()
[<c4819858>] aha1542_queuecommand+0x4a4/0x4ce [aha1542]
[<c4833317>] scsi_done+0x0/0x16 [scsi_mod]
[<c48339f2>] scsi_dispatch_cmd+0x1b0/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a1662>] blk_run_queue+0x2a/0x4b
[<c483725a>] scsi_queue_insert+0x75/0x7d [scsi_mod]
[<c01a1598>] blk_done_softirq+0x4a/0x55
[<c0118563>] __do_softirq+0x35/0x75
[<c01185c5>] do_softirq+0x22/0x26
[<c0105074>] do_IRQ+0x48/0x50
[<c0103a9a>] common_interrupt+0x1a/0x20
[<c48339f6>] scsi_dispatch_cmd+0x1b4/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a09d4>] __generic_unplug_device+0x1d/0x1f
[<c01a0a3a>] blk_execute_rq_nowait+0x64/0x6a
[<c01a0aae>] blk_execute_rq+0x6e/0x8f
[<c01a02d0>] blk_end_sync_rq+0x0/0x1d
[<c01354c9>] mempool_alloc+0x1c/0x97
[<c014d2fc>] bio_phys_segments+0xe/0x14
[<c019f456>] blk_rq_bio_prep+0x28/0x7c
[<c483744f>] scsi_execute+0xc6/0xd9 [scsi_mod]
[<c4942da2>] sr_do_ioctl+0x80/0x1bd [sr_mod]
[<c483439d>] scsi_set_medium_removal+0x43/0x67 [scsi_mod]
[<c494209b>] sr_packet+0x1a/0x1f [sr_mod]
[<c49aad25>] cdrom_open+0x337/0x8ae [cdrom]
[<c0275aaf>] wait_for_completion+0x5b/0x84
[<c0111cba>] default_wake_function+0x0/0xc
[<c0120312>] call_usermodehelper_keys+0xa6/0xb2
[<c012031e>] __call_usermodehelper+0x0/0x43
[<c012049b>] request_module+0xc2/0xd0
[<c01a9b71>] kobject_get+0xf/0x13
[<c4942324>] sr_block_open+0x74/0x81 [sr_mod]
[<c014ec4f>] do_open+0x8a/0x313
[<c4837b01>] scsi_request_fn+0x273/0x2ac [scsi_mod]
[<c0275d9f>] io_schedule+0xe/0x16
[<c0276065>] __wait_on_bit+0x50/0x58
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c02760cf>] out_of_line_wait_on_bit+0x62/0x6a
[<c0122cf0>] wake_bit_function+0x0/0x3c
[<c014ace5>] __wait_on_buffer+0x1c/0x1f
[<c48852e1>] __ext3_get_inode_loc+0x263/0x2b1 [ext3]
[<c015bbd6>] d_splice_alias+0xa9/0xc3
[<c488b470>] ext3_lookup+0x98/0xb8 [ext3]
[<c0153018>] do_lookup+0x4f/0x135
[<c015b1cb>] dput+0x1a/0x10b
[<c0154e0d>] __link_path_walk+0xa5d/0xba8
[<c014ef2d>] blkdev_get+0x55/0x60
[<c014f212>] open_bdev_excl+0x32/0x6e
[<c014e1f8>] get_sb_bdev+0x14/0x115
[<c49934c1>] isofs_get_sb+0x12/0x16 [isofs]
[<c4993987>] isofs_fill_super+0x0/0x899 [isofs]
[<c014df0a>] vfs_kern_mount+0x88/0xfd
[<c014dfb2>] do_kern_mount+0x26/0x36
[<c015eee2>] do_mount+0x589/0x5fb
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c0155007>] link_path_walk+0xaf/0xb9
[<c013c4fc>] __handle_mm_fault+0x341/0x620
[<c01552c4>] do_path_lookup+0x195/0x1b5
[<c013c342>] __handle_mm_fault+0x187/0x620
[<c0136236>] get_page_from_freelist+0x6e/0x2bb
[<c0136ae6>] __get_free_pages+0x25/0x3e
[<c015de80>] copy_mount_options+0x27/0x10a
[<c015efbe>] sys_mount+0x6a/0xa2
[<c0102a47>] syscall_call+0x7/0xb
sgpnt[0:1] page c3489af0/0x3489af0 length 32
BUG: warning at drivers/scsi/aha1542.c:78/BAD_SG_DMA()
[<c4819858>] aha1542_queuecommand+0x4a4/0x4ce [aha1542]
[<c4833317>] scsi_done+0x0/0x16 [scsi_mod]
[<c48339f2>] scsi_dispatch_cmd+0x1b0/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a1662>] blk_run_queue+0x2a/0x4b
[<c483725a>] scsi_queue_insert+0x75/0x7d [scsi_mod]
[<c01a1598>] blk_done_softirq+0x4a/0x55
[<c0118563>] __do_softirq+0x35/0x75
[<c01185c5>] do_softirq+0x22/0x26
[<c0105074>] do_IRQ+0x48/0x50
[<c0103a9a>] common_interrupt+0x1a/0x20
[<c48339f6>] scsi_dispatch_cmd+0x1b4/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a09d4>] __generic_unplug_device+0x1d/0x1f
[<c01a0a3a>] blk_execute_rq_nowait+0x64/0x6a
[<c01a0aae>] blk_execute_rq+0x6e/0x8f
[<c01a02d0>] blk_end_sync_rq+0x0/0x1d
[<c01354c9>] mempool_alloc+0x1c/0x97
[<c014d2fc>] bio_phys_segments+0xe/0x14
[<c019f456>] blk_rq_bio_prep+0x28/0x7c
[<c483744f>] scsi_execute+0xc6/0xd9 [scsi_mod]
[<c4942da2>] sr_do_ioctl+0x80/0x1bd [sr_mod]
[<c483439d>] scsi_set_medium_removal+0x43/0x67 [scsi_mod]
[<c494209b>] sr_packet+0x1a/0x1f [sr_mod]
[<c49aad25>] cdrom_open+0x337/0x8ae [cdrom]
[<c0275aaf>] wait_for_completion+0x5b/0x84
[<c0111cba>] default_wake_function+0x0/0xc
[<c0120312>] call_usermodehelper_keys+0xa6/0xb2
[<c012031e>] __call_usermodehelper+0x0/0x43
[<c012049b>] request_module+0xc2/0xd0
[<c01a9b71>] kobject_get+0xf/0x13
[<c4942324>] sr_block_open+0x74/0x81 [sr_mod]
[<c014ec4f>] do_open+0x8a/0x313
[<c4837b01>] scsi_request_fn+0x273/0x2ac [scsi_mod]
[<c0275d9f>] io_schedule+0xe/0x16
[<c0276065>] __wait_on_bit+0x50/0x58
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c02760cf>] out_of_line_wait_on_bit+0x62/0x6a
[<c0122cf0>] wake_bit_function+0x0/0x3c
[<c014ace5>] __wait_on_buffer+0x1c/0x1f
[<c48852e1>] __ext3_get_inode_loc+0x263/0x2b1 [ext3]
[<c015bbd6>] d_splice_alias+0xa9/0xc3
[<c488b470>] ext3_lookup+0x98/0xb8 [ext3]
[<c0153018>] do_lookup+0x4f/0x135
[<c015b1cb>] dput+0x1a/0x10b
[<c0154e0d>] __link_path_walk+0xa5d/0xba8
[<c014ef2d>] blkdev_get+0x55/0x60
[<c014f212>] open_bdev_excl+0x32/0x6e
[<c014e1f8>] get_sb_bdev+0x14/0x115
[<c49934c1>] isofs_get_sb+0x12/0x16 [isofs]
[<c4993987>] isofs_fill_super+0x0/0x899 [isofs]
[<c014df0a>] vfs_kern_mount+0x88/0xfd
[<c014dfb2>] do_kern_mount+0x26/0x36
[<c015eee2>] do_mount+0x589/0x5fb
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c0155007>] link_path_walk+0xaf/0xb9
[<c013c4fc>] __handle_mm_fault+0x341/0x620
[<c01552c4>] do_path_lookup+0x195/0x1b5
[<c013c342>] __handle_mm_fault+0x187/0x620
[<c0136236>] get_page_from_freelist+0x6e/0x2bb
[<c0136ae6>] __get_free_pages+0x25/0x3e
[<c015de80>] copy_mount_options+0x27/0x10a
[<c015efbe>] sys_mount+0x6a/0xa2
[<c0102a47>] syscall_call+0x7/0xb
sgpnt[0:1] page c3489af0/0x3489af0 length 32
BUG: warning at drivers/scsi/aha1542.c:78/BAD_SG_DMA()
[<c4819858>] aha1542_queuecommand+0x4a4/0x4ce [aha1542]
[<c4833317>] scsi_done+0x0/0x16 [scsi_mod]
[<c48339f2>] scsi_dispatch_cmd+0x1b0/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a1662>] blk_run_queue+0x2a/0x4b
[<c483725a>] scsi_queue_insert+0x75/0x7d [scsi_mod]
[<c01a1598>] blk_done_softirq+0x4a/0x55
[<c0118563>] __do_softirq+0x35/0x75
[<c01185c5>] do_softirq+0x22/0x26
[<c0105074>] do_IRQ+0x48/0x50
[<c0103a9a>] common_interrupt+0x1a/0x20
[<c48339f6>] scsi_dispatch_cmd+0x1b4/0x223 [scsi_mod]
[<c4837abc>] scsi_request_fn+0x22e/0x2ac [scsi_mod]
[<c01a09d4>] __generic_unplug_device+0x1d/0x1f
[<c01a0a3a>] blk_execute_rq_nowait+0x64/0x6a
[<c01a0aae>] blk_execute_rq+0x6e/0x8f
[<c01a02d0>] blk_end_sync_rq+0x0/0x1d
[<c01354c9>] mempool_alloc+0x1c/0x97
[<c014d2fc>] bio_phys_segments+0xe/0x14
[<c019f456>] blk_rq_bio_prep+0x28/0x7c
[<c483744f>] scsi_execute+0xc6/0xd9 [scsi_mod]
[<c4942da2>] sr_do_ioctl+0x80/0x1bd [sr_mod]
[<c483439d>] scsi_set_medium_removal+0x43/0x67 [scsi_mod]
[<c494209b>] sr_packet+0x1a/0x1f [sr_mod]
[<c49aad25>] cdrom_open+0x337/0x8ae [cdrom]
[<c0275aaf>] wait_for_completion+0x5b/0x84
[<c0111cba>] default_wake_function+0x0/0xc
[<c0120312>] call_usermodehelper_keys+0xa6/0xb2
[<c012031e>] __call_usermodehelper+0x0/0x43
[<c012049b>] request_module+0xc2/0xd0
[<c01a9b71>] kobject_get+0xf/0x13
[<c4942324>] sr_block_open+0x74/0x81 [sr_mod]
[<c014ec4f>] do_open+0x8a/0x313
[<c4837b01>] scsi_request_fn+0x273/0x2ac [scsi_mod]
[<c0275d9f>] io_schedule+0xe/0x16
[<c0276065>] __wait_on_bit+0x50/0x58
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c014ad1a>] sync_buffer+0x0/0x2e
[<c02760cf>] out_of_line_wait_on_bit+0x62/0x6a
[<c0122cf0>] wake_bit_function+0x0/0x3c
[<c014ace5>] __wait_on_buffer+0x1c/0x1f
[<c48852e1>] __ext3_get_inode_loc+0x263/0x2b1 [ext3]
[<c015bbd6>] d_splice_alias+0xa9/0xc3
[<c488b470>] ext3_lookup+0x98/0xb8 [ext3]
[<c0153018>] do_lookup+0x4f/0x135
[<c015b1cb>] dput+0x1a/0x10b
[<c0154e0d>] __link_path_walk+0xa5d/0xba8
[<c014ef2d>] blkdev_get+0x55/0x60
[<c014f212>] open_bdev_excl+0x32/0x6e
[<c014e1f8>] get_sb_bdev+0x14/0x115
[<c49934c1>] isofs_get_sb+0x12/0x16 [isofs]
[<c4993987>] isofs_fill_super+0x0/0x899 [isofs]
[<c014df0a>] vfs_kern_mount+0x88/0xfd
[<c014dfb2>] do_kern_mount+0x26/0x36
[<c015eee2>] do_mount+0x589/0x5fb
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c015e21c>] mntput_no_expire+0x11/0x59
[<c0155007>] link_path_walk+0xaf/0xb9
[<c013c4fc>] __handle_mm_fault+0x341/0x620
[<c01552c4>] do_path_lookup+0x195/0x1b5
[<c013c342>] __handle_mm_fault+0x187/0x620
[<c0136236>] get_page_from_freelist+0x6e/0x2bb
[<c0136ae6>] __get_free_pages+0x25/0x3e
[<c015de80>] copy_mount_options+0x27/0x10a
[<c015efbe>] sys_mount+0x6a/0xa2
[<c0102a47>] syscall_call+0x7/0xb
ISO 9660 Extensions: Microsoft Joliet Level 1
ISOFS: changing to secondary root
--
-----------------------------------------------------------------------
Bob Tracy WTO + WIPO = DMCA? http://www.anti-dmca.org
rct@frus.com
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next prev parent reply other threads:[~2007-05-01 13:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-01 2:10 BAD_SG_DMA panic in aha1542 Bob Tracy
2007-05-01 13:33 ` Jens Axboe
2007-05-01 13:42 ` Bob Tracy [this message]
2007-05-01 13:46 ` Alan Cox
2007-05-01 18:32 ` Bob Tracy
-- strict thread matches above, loose matches on Subject: below --
2007-04-27 21:47 Bob Tracy
2007-04-27 22:13 ` Alan Cox
2007-04-27 23:56 ` Bob Tracy
2007-04-27 22:21 ` James Bottomley
2007-04-27 23:53 ` Bob Tracy
2007-04-30 14:33 ` Bob Tracy
2007-04-30 17:32 ` Jens Axboe
2007-04-30 17:39 ` Christoph Hellwig
2007-04-30 17:52 ` Jens Axboe
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