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Message-ID: <20000101121104.GA2583@ucw.cz> Date: Sat, 1 Jan 2000 13:11:04 +0100 From: Pavel Machek <pavel@....cz> To: Hans Beck?rus <hans.beckerus@...ia.com> Cc: kernel list <linux-kernel@...r.kernel.org> Subject: Re: NBD and 2.6 kernel MIPS problem Hi! > Hi, I recently compiled the NBD kernel module for a 2.6 ucLibc > kernel and are experiencing > some crash problems. Are there any known issues with the 2.6 range > of kernels together with NBD? Nothing known to me, but I no longer maintain nbd. I suggest you ask lkml and Paul... Pavel > The nbd-server and nbd-client seems ok though and handshaking works. > The platform is MIPS based. > > I also get these syslog entries when doing insmod: > > nbd: no version for "struct_module" found: kernel tainted. > nbd: registered device at major 43 > > The major device information I understand but not the first one. > > Best regards, > Hans > > /tmp/usbmounts/sda1 # ./nbd-client 192.168.0.30 1024 /dev/nbd/0 > Negotiation: ..size = 20480KB > bs=1024, sz=20480 > > /tmp/usbmounts/sda1 # mkdir /tmp/x > /tmp/usbmounts/sda1 # mount /dev/nbd/0 /tmp/x > Segmentation fault > > syslog output: > > CPU 0 Unable to handle kernel paging request at virtual address > 0000c604, epc == 803100c4, ra == c0076ccc > Oops in arch/mips/mm/fault.c::do_page_fault, line 229[#1]: > Cpu 0 > $ 0 : 00000000 10007f00 00000050 00000050 > $ 4 : 0000c5f8 8083c18c 0000c5f8 8083c18c > $ 8 : 812b1c24 812b1c2c 00000000 810f9428 > $12 : 00000000 00001269 81a1ff7c 805aad20 > $16 : 812b1c10 806860f8 8159804c 812b1c18 > $20 : 00000002 801ad7cc 80028000 00000000 > $24 : 00000000 c0076c70 > $28 : 812b0000 812b1ba8 00000001 c0076ccc > Hi : 00000000 > Lo : 00000002 > epc : 803100c4 elv_remove_request+0x14/0x58 Tainted: GF > ra : c0076ccc do_nbd_request+0x5c/0x3b8 [nbd] > Status: 10007f02 KERNEL EXL > Cause : c8808008 > BadVA : 0000c604 > PrId : 00019378 > Modules linked in: nbd ohci_hcd ehci_hcd sata_mars libata > Process mount (pid: 657, threadinfo=812b0000, task=810f9428) > Stack : 00000000 812b1c18 80313a94 80313a84 8083c18c 812b1bbc > 812b1c10 806860f8 > 00000000 80313af0 80160888 812b1bbc 812b1bbc 812b1bdc > 801ad810 806d9bc0 > 00000000 00000001 80316378 812b1bdc 80432350 00000000 > 806d9bc0 00000001 > 80490c30 0000000c 800b5c04 00000002 00000000 810f9428 > 801608cc 806860f8 > 806860f8 00000000 800b5c04 00000002 00000000 810f9428 > 801608cc 812b1c24 > ... > Call Trace: > [<80313a94>] __generic_unplug_device+0x3c/0x64 > [<80313a84>] __generic_unplug_device+0x2c/0x64 > [<80313af0>] generic_unplug_device+0x34/0x78 > [<80160888>] autoremove_wake_function+0x0/0x44 > [<801ad810>] sync_buffer+0x44/0x5c > [<80316378>] submit_bio+0xc4/0xe0 > [<80432350>] out_of_line_wait_on_bit+0x1d8/0x240 > [<801608cc>] wake_bit_function+0x0/0x9c > [<801608cc>] wake_bit_function+0x0/0x9c > [<801b163c>] submit_bh+0x1bc/0x344 > [<801b66a0>] __bread+0x1e4/0x21c > [<801b6678>] __bread+0x1bc/0x21c > [<801ba2bc>] sb_set_blocksize+0x28/0x6c > [<8021a27c>] ext3_fill_super+0x188/0x17fc > [<8021a230>] ext3_fill_super+0x13c/0x17fc > [<802d288c>] snprintf+0x14/0x20 > [<801fedf4>] disk_name+0x44/0xc4 > [<801b9c9c>] get_sb_bdev+0x29c/0x308 > [<8017dff8>] kmem_cache_alloc+0x5c/0x98 > [<8017a610>] __get_free_pages+0x2c/0x64 > [<8021c7f4>] ext3_get_sb+0x18/0x24 > [<8021a0f4>] ext3_fill_super+0x0/0x17fc > [<801b9f38>] do_kern_mount+0x68/0x1c0 > [<801b9f00>] do_kern_mount+0x30/0x1c0 > [<801c8ca4>] path_lookup+0x524/0x548 > [<8017a258>] __alloc_pages+0x110/0x430 > [<801e0404>] do_mount+0x810/0x874 > [<801fe228>] filesystems_read_proc+0x34/0x6c > [<8017a610>] __get_free_pages+0x2c/0x64 > [<80120900>] tlb_do_page_fault_0+0x100/0x108 > [<8017a258>] __alloc_pages+0x110/0x430 > [<8017a610>] __get_free_pages+0x2c/0x64 > [<801dfb04>] copy_mount_options+0x3c/0x12c > [<80433d60>] __lock_text_end+0xea0/0x16d8 > [<801e0f00>] sys_mount+0xa4/0x100 > [<801abbd8>] sys_read+0x58/0xa0 > [<801978c0>] sys_brk+0x100/0x128 > [<8011dea0>] stack_done+0x20/0x3c > [<8011dea0>] stack_done+0x20/0x3c > > > Code: 8ca20008 30420050 24030050 <14430004> 8c88000c 8c82015c > 24420001 ac82015c 8cc20008 > eth0 Regs : 0xb8016000 > 00 1c 85 0b 6c 49 00 00 00 00 00 80 00 00 00 00 > 1a 11 76 d3 00 00 00 00 00 00 00 00 00 00 00 00 > 1e 2a 58 a9 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 02 03 f5 00 00 > 00 00 0c 00 00 00 00 0e 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 e0 00 00 00 84 01 78 6d > 08 0a 04 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > eth0 Regs : 0xb8016100 > a1 98 54 00 00 11 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > a1 98 50 00 00 13 02 00 00 00 00 00 00 00 00 00 > eth0 Regs : 0xb8016200 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 12 00 10 00 00 0c 34 0c 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > eth0 RxFDP : 0xa1985000 > 00 08 00 80 10 50 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 40 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 20 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 b6 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 40 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 30 0d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 0e 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 8d 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 10 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 40 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 10 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 b0 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 f0 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 a0 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 20 67 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 70 4d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 53 01 00 00 00 00 00 00 00 00 > 00 08 00 80 10 90 51 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 8d 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 8f 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 40 52 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 20 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 60 02 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 80 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 00 0b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 4b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 f0 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 a0 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 80 9a 01 00 00 00 00 00 00 00 00 > 00 08 00 80 10 e0 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 30 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 d0 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 d0 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 b0 8d 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 8f 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 20 b8 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 80 0e 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 70 52 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 30 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 30 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 e0 41 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 4c 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 d0 4b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 00 3c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 a0 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 f0 9a 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 05 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 70 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 90 a7 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 20 9d 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 c0 09 00 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 50 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 70 4e 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 80 9c 01 00 00 00 00 ff ff 00 00 > 00 08 00 80 10 b0 9b 01 00 00 00 00 ff ff 00 00 > 00 08 00 c0 10 70 0e 01 00 00 00 00 ff ff 00 00 > note: mount[657] exited with preempt_count 1 > scheduling while atomic: mount/0x10000001/657 > Call Trace: > [<8042f9f8>] schedule+0x74/0xe18 > [<804316e4>] cond_resched+0x44/0x84 > [<801905d8>] unmap_vmas+0x514/0x5a4 > [<80182258>] __pagevec_lru_add_active+0x28c/0x2b0 > [<8018280c>] lru_add_drain+0x22c/0x288 > [<80197970>] exit_mmap+0x88/0x21c > [<80138c5c>] mmput+0xf0/0x268 > [<8013e3b4>] printk+0x1c/0x28 > [<80141000>] do_exit+0x1cc/0x11cc > [<8011afec>] __die_if_kernel+0x0/0x30 > [<8011afbc>] __die+0xd4/0x104 > [<8013e3b4>] printk+0x1c/0x28 > [<801202a4>] do_page_fault+0x314/0x450 > [<803100c4>] elv_remove_request+0x14/0x58 > [<c0076ccc>] do_nbd_request+0x5c/0x3b8 [nbd] > [<8017a258>] __alloc_pages+0x110/0x430 > [<80176fe8>] mempool_alloc+0x88/0x1dc > [<80160888>] autoremove_wake_function+0x0/0x44 > [<80160888>] autoremove_wake_function+0x0/0x44 > [<801ad7cc>] sync_buffer+0x0/0x5c > [<80120900>] tlb_do_page_fault_0+0x100/0x108 > [<803195b8>] exact_lock+0x10/0x28 > [<801ad7cc>] sync_buffer+0x0/0x5c > [<c0076c70>] do_nbd_request+0x0/0x3b8 [nbd] > [<c0076ccc>] do_nbd_request+0x5c/0x3b8 [nbd] > [<803100c4>] elv_remove_request+0x14/0x58 > [<80313a94>] __generic_unplug_device+0x3c/0x64 > [<80313a84>] __generic_unplug_device+0x2c/0x64 > [<80313af0>] generic_unplug_device+0x34/0x78 > [<80160888>] autoremove_wake_function+0x0/0x44 > [<801ad810>] sync_buffer+0x44/0x5c > [<80316378>] submit_bio+0xc4/0xe0 > [<80432350>] out_of_line_wait_on_bit+0x1d8/0x240 > [<801608cc>] wake_bit_function+0x0/0x9c > [<801608cc>] wake_bit_function+0x0/0x9c > [<801b163c>] submit_bh+0x1bc/0x344 > [<801b66a0>] __bread+0x1e4/0x21c > [<801b6678>] __bread+0x1bc/0x21c > [<801ba2bc>] sb_set_blocksize+0x28/0x6c > [<8021a27c>] ext3_fill_super+0x188/0x17fc > [<8021a230>] ext3_fill_super+0x13c/0x17fc > [<802d288c>] snprintf+0x14/0x20 > [<801fedf4>] disk_name+0x44/0xc4 > [<801b9c9c>] get_sb_bdev+0x29c/0x308 > [<8017dff8>] kmem_cache_alloc+0x5c/0x98 > [<8017a610>] __get_free_pages+0x2c/0x64 > [<8021c7f4>] ext3_get_sb+0x18/0x24 > [<8021a0f4>] ext3_fill_super+0x0/0x17fc > [<801b9f38>] do_kern_mount+0x68/0x1c0 > [<801b9f00>] do_kern_mount+0x30/0x1c0 > [<801c8ca4>] path_lookup+0x524/0x548 > [<8017a258>] __alloc_pages+0x110/0x430 > [<801e0404>] do_mount+0x810/0x874 > [<801fe228>] filesystems_read_proc+0x34/0x6c > [<8017a610>] __get_free_pages+0x2c/0x64 > [<80120900>] tlb_do_page_fault_0+0x100/0x108 > [<8017a258>] __alloc_pages+0x110/0x430 > [<8017a610>] __get_free_pages+0x2c/0x64 > [<801dfb04>] copy_mount_options+0x3c/0x12c > [<80433d60>] __lock_text_end+0xea0/0x16d8 > [<801e0f00>] sys_mount+0xa4/0x100 > [<801abbd8>] sys_read+0x58/0xa0 > [<801978c0>] sys_brk+0x100/0x128 > [<8011dea0>] stack_done+0x20/0x3c > [<8011dea0>] stack_done+0x20/0x3c > > > > > > -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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