Re: kobject oops with maple bus
On Mon, Jan 28, 2008 at 09:41:49AM -, Adrian McMenamin wrote: > On Sat, January 26, 2008 8:44 pm, Greg KH wrote: > > On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: > >> Greg, > >> > >> Just updated my git to the latest sources and get these (seemingly > >> non-fatal) oops with the Dreamcast maple bus. I'll investigate further, > >> but they may mean something to out out of the box. > >> > >> Adrian > > > > >> [0.00] kobject (8cc2d360): tried to init an initialized object, > >> something is seriously wrong. > > > > The problem is here. You have possibly already initialized this object, > > or called 'kobject_get' on it before registering it with the driver > > core. This is a new sanity check that has been in the -mm tree for > > years :) > > > > So I think something needs to be fixed in the code. Do you want me to > > take a look at it? > > > > thanks, > > > > greg k-h > > - > > To unsubscribe from this list: send the line "unsubscribe linux-sh" in > > the body of a message to [EMAIL PROTECTED] > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > Greg, > > Have now patched that. But I am trying to hunt down another bug - which > seems memory related. After N hotplug events (where N is greater than two > and less than about 100) I get this below - either indicating something > very wrong in SLUB (unlikely) or a memory leak in my driver (sadly, much > more likely). > > I cannot see anything obvious and my best guess is that I am freeing up > the underlying struct device incorrectly - this is allocated currently as > staticly allocated member of a dynamically allocated struct maple_device. > It gets hit by the kfree(mdev) - is that going to cause a problem? Yes, you can not free the struct device on your own, you must let the release function clean it up for you. Try enabling CONFIG_KOBJECT_DEBUG as well as CONFIG_DEBUG_DRIVER and see if that shows you some more clues as to what you are doing wrong here. And please let me know what you find, in talking to Ingo, I need to find all the "wrong cases" that this code is being used in to try to make it easier to prevent this from happening again. thanks, greg k-h -- 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/
Re: kobject oops with maple bus
On Sat, January 26, 2008 8:44 pm, Greg KH wrote: > On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: >> Greg, >> >> Just updated my git to the latest sources and get these (seemingly >> non-fatal) oops with the Dreamcast maple bus. I'll investigate further, >> but they may mean something to out out of the box. >> >> Adrian >> [0.00] kobject (8cc2d360): tried to init an initialized object, >> something is seriously wrong. > > The problem is here. You have possibly already initialized this object, > or called 'kobject_get' on it before registering it with the driver > core. This is a new sanity check that has been in the -mm tree for > years :) > > So I think something needs to be fixed in the code. Do you want me to > take a look at it? > > thanks, > > greg k-h > - > To unsubscribe from this list: send the line "unsubscribe linux-sh" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Greg, Have now patched that. But I am trying to hunt down another bug - which seems memory related. After N hotplug events (where N is greater than two and less than about 100) I get this below - either indicating something very wrong in SLUB (unlikely) or a memory leak in my driver (sadly, much more likely). I cannot see anything obvious and my best guess is that I am freeing up the underlying struct device incorrectly - this is allocated currently as staticly allocated member of a dynamically allocated struct maple_device. It gets hit by the kfree(mdev) - is that going to cause a problem? [ 41.491053] Maple bus device detaching at (0, 2) [ 42.509136] Maple bus at (0, 2): Connected function 0x10 [ 42.513939] No maple driver found for this device [ 44.504875] Maple bus device detaching at (0, 2) [ 45.523250] Maple bus at (0, 2): Connected function 0x10 [ 45.529272] No maple driver found for this device [ 46.514861] Maple bus device detaching at (0, 1) [ 47.516651] Maple bus device detaching at (0, 2) [ 48.539093] Maple bus at (0, 1): Connected function 0xE [ 48.545090] No maple driver found for this device [ 48.565052] Maple bus at (0, 2): Connected function 0x10 [ 48.569995] No maple driver found for this device [ 49.528324] Maple bus device detaching at (0, 2) [ 51.551459] Maple bus at (0, 2): Connected function 0x10 [ 51.557579] No maple driver found for this device [ 52.542771] Maple bus device detaching at (0, 2) [ 53.560892] Maple bus at (0, 2): Connected function 0x10 [ 53.566011] No maple driver found for this device [ 55.556921] Maple bus device detaching at (0, 2) [ 56.574966] Maple bus at (0, 2): Connected function 0x10 [ 56.580969] No maple driver found for this device [ 58.570982] Maple bus device detaching at (0, 2) [ 59.589076] Maple bus at (0, 2): Connected function 0x10 [ 59.594105] No maple driver found for this device [ 60.579944] Maple bus device detaching at (0, 2) [ 61.598478] Maple bus at (0, 2): Connected function 0x10 [ 61.602238] No maple driver found for this device [ 61.615106] Fault in unaligned fixup: [#1] [ 61.616970] Modules linked in: nbd [ 61.616970] [ 61.616970] Pid : 752, Comm:udevd [ 61.616970] PC is at kmem_cache_alloc+0x2e/0xc0 [ 61.616970] PC : 8c074a4e SP : 8c88ddc4 SR : 400080f0 TEA : c00077c4Not tainted [ 61.616970] R0 : R1 : R2 : R3 : 8ce1d000 [ 61.616970] R4 : 8c2b03b0 R5 : 80d0 R6 : 7fff R7 : 8c0c09e0 [ 61.616970] R8 : R9 : R10 : 8c2b03f4 R11 : 80d0 [ 61.616970] R12 : 8c88dee4 R13 : 7fff R14 : 8c88ddc4 [ 61.616970] MACH: 0002 MACL: GBR : 29708440 PR : 8c0c09e0 [ 61.616970] [ 61.616970] Call trace: [ 61.616970] [<8c0c09e0>] show_stat+0x20/0x3e0 [ 61.616970] [<8c0556b4>] rmqueue_bulk+0x34/0xa0 [ 61.616970] [<8c056e2e>] get_page_from_freelist+0x32e/0x540 [ 61.616970] [<8c057088>] __alloc_pages+0x48/0x3c0 [ 61.616970] [<8c09baa6>] seq_open+0x66/0xa0 [ 61.616970] [<8c09bbde>] single_open+0x3e/0xa0 [ 61.616970] [<8c0c09c0>] show_stat+0x0/0x3e0 [ 61.616970] [<8c0c094a>] stat_open+0x2a/0xa0 [ 61.616970] [<8c0b87d4>] proc_reg_open+0x54/0xc0 [ 61.616970] [<8c0c0920>] stat_open+0x0/0xa0 [ 61.616970] [<8c0b87dc>] proc_reg_open+0x5c/0xc0 [ 61.616970] [<8c075944>] __dentry_open+0xe4/0x2c0 [ 61.616970] [<8c0b8780>] proc_reg_open+0x0/0xc0 [ 61.616970] [<8c09bcae>] seq_read+0x6e/0x360 [ 61.616970] [<8c0b82c4>] proc_reg_read+0x64/0x100 [ 61.616970] [<8c09bc40>] seq_read+0x0/0x360 [ 61.616970] [<8c0781c4>] vfs_read+0x84/0xe0 [ 61.616970] [<8c07899c>] sys_read+0x3c/0xa0 [ 61.616970] [<8c008240>] syscall_call+0xc/0x10 [ 61.616970] [<8c078960>] sys_read+0x0/0xa0 [ 61.616970] [ 61.616970] Process: udevd (pid: 752, stack limit = 8c88c001) [ 61.616970] Stack: (0x8c88ddc4 to 0x8c88e000) [ 61.616970] ddc0: 8c0c09e0 8c88dddc 8c4103c0 8cef3f80 0001
Re: kobject oops with maple bus
On Mon, Jan 28, 2008 at 09:41:49AM -, Adrian McMenamin wrote: On Sat, January 26, 2008 8:44 pm, Greg KH wrote: On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian [0.00] kobject (8cc2d360): tried to init an initialized object, something is seriously wrong. The problem is here. You have possibly already initialized this object, or called 'kobject_get' on it before registering it with the driver core. This is a new sanity check that has been in the -mm tree for years :) So I think something needs to be fixed in the code. Do you want me to take a look at it? thanks, greg k-h - To unsubscribe from this list: send the line unsubscribe linux-sh in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Greg, Have now patched that. But I am trying to hunt down another bug - which seems memory related. After N hotplug events (where N is greater than two and less than about 100) I get this below - either indicating something very wrong in SLUB (unlikely) or a memory leak in my driver (sadly, much more likely). I cannot see anything obvious and my best guess is that I am freeing up the underlying struct device incorrectly - this is allocated currently as staticly allocated member of a dynamically allocated struct maple_device. It gets hit by the kfree(mdev) - is that going to cause a problem? Yes, you can not free the struct device on your own, you must let the release function clean it up for you. Try enabling CONFIG_KOBJECT_DEBUG as well as CONFIG_DEBUG_DRIVER and see if that shows you some more clues as to what you are doing wrong here. And please let me know what you find, in talking to Ingo, I need to find all the wrong cases that this code is being used in to try to make it easier to prevent this from happening again. thanks, greg k-h -- 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/
Re: kobject oops with maple bus
On Sat, January 26, 2008 8:44 pm, Greg KH wrote: On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian [0.00] kobject (8cc2d360): tried to init an initialized object, something is seriously wrong. The problem is here. You have possibly already initialized this object, or called 'kobject_get' on it before registering it with the driver core. This is a new sanity check that has been in the -mm tree for years :) So I think something needs to be fixed in the code. Do you want me to take a look at it? thanks, greg k-h - To unsubscribe from this list: send the line unsubscribe linux-sh in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Greg, Have now patched that. But I am trying to hunt down another bug - which seems memory related. After N hotplug events (where N is greater than two and less than about 100) I get this below - either indicating something very wrong in SLUB (unlikely) or a memory leak in my driver (sadly, much more likely). I cannot see anything obvious and my best guess is that I am freeing up the underlying struct device incorrectly - this is allocated currently as staticly allocated member of a dynamically allocated struct maple_device. It gets hit by the kfree(mdev) - is that going to cause a problem? [ 41.491053] Maple bus device detaching at (0, 2) [ 42.509136] Maple bus at (0, 2): Connected function 0x10 [ 42.513939] No maple driver found for this device [ 44.504875] Maple bus device detaching at (0, 2) [ 45.523250] Maple bus at (0, 2): Connected function 0x10 [ 45.529272] No maple driver found for this device [ 46.514861] Maple bus device detaching at (0, 1) [ 47.516651] Maple bus device detaching at (0, 2) [ 48.539093] Maple bus at (0, 1): Connected function 0xE [ 48.545090] No maple driver found for this device [ 48.565052] Maple bus at (0, 2): Connected function 0x10 [ 48.569995] No maple driver found for this device [ 49.528324] Maple bus device detaching at (0, 2) [ 51.551459] Maple bus at (0, 2): Connected function 0x10 [ 51.557579] No maple driver found for this device [ 52.542771] Maple bus device detaching at (0, 2) [ 53.560892] Maple bus at (0, 2): Connected function 0x10 [ 53.566011] No maple driver found for this device [ 55.556921] Maple bus device detaching at (0, 2) [ 56.574966] Maple bus at (0, 2): Connected function 0x10 [ 56.580969] No maple driver found for this device [ 58.570982] Maple bus device detaching at (0, 2) [ 59.589076] Maple bus at (0, 2): Connected function 0x10 [ 59.594105] No maple driver found for this device [ 60.579944] Maple bus device detaching at (0, 2) [ 61.598478] Maple bus at (0, 2): Connected function 0x10 [ 61.602238] No maple driver found for this device [ 61.615106] Fault in unaligned fixup: [#1] [ 61.616970] Modules linked in: nbd [ 61.616970] [ 61.616970] Pid : 752, Comm:udevd [ 61.616970] PC is at kmem_cache_alloc+0x2e/0xc0 [ 61.616970] PC : 8c074a4e SP : 8c88ddc4 SR : 400080f0 TEA : c00077c4Not tainted [ 61.616970] R0 : R1 : R2 : R3 : 8ce1d000 [ 61.616970] R4 : 8c2b03b0 R5 : 80d0 R6 : 7fff R7 : 8c0c09e0 [ 61.616970] R8 : R9 : R10 : 8c2b03f4 R11 : 80d0 [ 61.616970] R12 : 8c88dee4 R13 : 7fff R14 : 8c88ddc4 [ 61.616970] MACH: 0002 MACL: GBR : 29708440 PR : 8c0c09e0 [ 61.616970] [ 61.616970] Call trace: [ 61.616970] [8c0c09e0] show_stat+0x20/0x3e0 [ 61.616970] [8c0556b4] rmqueue_bulk+0x34/0xa0 [ 61.616970] [8c056e2e] get_page_from_freelist+0x32e/0x540 [ 61.616970] [8c057088] __alloc_pages+0x48/0x3c0 [ 61.616970] [8c09baa6] seq_open+0x66/0xa0 [ 61.616970] [8c09bbde] single_open+0x3e/0xa0 [ 61.616970] [8c0c09c0] show_stat+0x0/0x3e0 [ 61.616970] [8c0c094a] stat_open+0x2a/0xa0 [ 61.616970] [8c0b87d4] proc_reg_open+0x54/0xc0 [ 61.616970] [8c0c0920] stat_open+0x0/0xa0 [ 61.616970] [8c0b87dc] proc_reg_open+0x5c/0xc0 [ 61.616970] [8c075944] __dentry_open+0xe4/0x2c0 [ 61.616970] [8c0b8780] proc_reg_open+0x0/0xc0 [ 61.616970] [8c09bcae] seq_read+0x6e/0x360 [ 61.616970] [8c0b82c4] proc_reg_read+0x64/0x100 [ 61.616970] [8c09bc40] seq_read+0x0/0x360 [ 61.616970] [8c0781c4] vfs_read+0x84/0xe0 [ 61.616970] [8c07899c] sys_read+0x3c/0xa0 [ 61.616970] [8c008240] syscall_call+0xc/0x10 [ 61.616970] [8c078960] sys_read+0x0/0xa0 [ 61.616970] [ 61.616970] Process: udevd (pid: 752, stack limit = 8c88c001) [ 61.616970] Stack: (0x8c88ddc4 to 0x8c88e000) [ 61.616970] ddc0: 8c0c09e0 8c88dddc 8c4103c0 8cef3f80 0001 8c4103c0 8c0556b4 [ 61.616970] dde0: 8c88ddfc 8c2bd6f0 0001
Re: kobject oops with maple bus
On Sat, 2008-01-26 at 12:44 -0800, Greg KH wrote: > On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: > > Greg, > > > > Just updated my git to the latest sources and get these (seemingly > > non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but > > they may mean something to out out of the box. > > > > Adrian > > > > > > > > > > dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL > > PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 > > [0.00] console [sercon0] enabled > > [0.00] Booting machvec: Sega Dreamcast > > [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 > > [0.00] Zone PFN ranges: > > [0.00] Normal 49152 ->53248 > > [0.00] Movable zone start PFN for each node > > [0.00] early_node_map[1] active PFN ranges > > [0.00] 0:49152 ->53248 > > [0.00] Built 1 zonelists in Zone order, mobility grouping on. > > Total pages: 4064 > > [0.00] Kernel command line: root=/dev/nfs rw > > nfsroot=192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial > > video=pvr2fb:[EMAIL PROTECTED] consol7 > > [0.00] PID hash table entries: 64 (order: 6, 256 bytes) > > [0.00] Using tmu for system timer > > [0.00] Using 12.469 MHz high precision timer. > > [0.00] Console: colour dummy device 80x25 > > [0.00] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) > > [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) > > [0.00] Memory: 13468k/16384k available (1918k kernel code, 645k > > data, 96k init) > > [0.00] PVR=040205c1 CVR= PRR= > > [0.00] I-cache : n_ways=1 n_sets=256 way_incr=8192 > > [0.00] I-cache : entry_mask=0x1fe0 alias_mask=0x1000 > > n_aliases=2 > > [0.00] D-cache : n_ways=1 n_sets=512 way_incr=16384 > > [0.00] D-cache : entry_mask=0x3fe0 alias_mask=0x3000 > > n_aliases=4 > > [0.00] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, > > CPUs=1, Nodes=1 > > [0.00] Mount-cache hash table entries: 512 > > [0.00] CPU: SH7750 > > [0.00] net_namespace: 64 bytes > > [0.00] NET: Registered protocol family 16 > > [0.00] Maple bus at (0, 0): Connected function 0x0 > > [0.00] No maple driver found for this device > > [0.00] Maple bus at (1, 0): Connected function 0x0 > > [0.00] No maple driver found for this device > > [0.00] Maple bus at (2, 0): Connected function 0x0 > > [0.00] No maple driver found for this device > > [0.00] Maple bus at (3, 0): Connected function 0x0 > > [0.00] No maple driver found for this device > > [0.00] Maple bus core now registered. > > [0.00] DMA: Registering DMA API. > > [0.00] DMA: Registering sh_dmac handler (4 channels). > > [0.00] Maple bus at (0, 0): Connected function 0x1 > > [0.00] No maple driver found for this device > > [0.00] kobject (8cc2d360): tried to init an initialized object, > > something is seriously wrong. > > The problem is here. You have possibly already initialized this object, > or called 'kobject_get' on it before registering it with the driver > core. This is a new sanity check that has been in the -mm tree for > years :) > > So I think something needs to be fixed in the code. Do you want me to > take a look at it? > I think it is probably registering the "dummy" driver a second or further time. Does that make sense? By all means have a look, but I'll have a go - I'm sure you have better things to do than mess about with Dreamcast code :) -- 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/
Re: kobject oops with maple bus
On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: > Greg, > > Just updated my git to the latest sources and get these (seemingly non-fatal) > oops with the Dreamcast maple bus. I'll investigate further, but they may > mean something to out out of the box. > > Adrian > > > > > dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL > PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 > [0.00] console [sercon0] enabled > [0.00] Booting machvec: Sega Dreamcast > [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 > [0.00] Zone PFN ranges: > [0.00] Normal 49152 ->53248 > [0.00] Movable zone start PFN for each node > [0.00] early_node_map[1] active PFN ranges > [0.00] 0:49152 ->53248 > [0.00] Built 1 zonelists in Zone order, mobility grouping on. Total > pages: 4064 > [0.00] Kernel command line: root=/dev/nfs rw > nfsroot=192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial > video=pvr2fb:[EMAIL PROTECTED] consol7 > [0.00] PID hash table entries: 64 (order: 6, 256 bytes) > [0.00] Using tmu for system timer > [0.00] Using 12.469 MHz high precision timer. > [0.00] Console: colour dummy device 80x25 > [0.00] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) > [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) > [0.00] Memory: 13468k/16384k available (1918k kernel code, 645k data, > 96k init) > [0.00] PVR=040205c1 CVR= PRR= > [0.00] I-cache : n_ways=1 n_sets=256 way_incr=8192 > [0.00] I-cache : entry_mask=0x1fe0 alias_mask=0x1000 > n_aliases=2 > [0.00] D-cache : n_ways=1 n_sets=512 way_incr=16384 > [0.00] D-cache : entry_mask=0x3fe0 alias_mask=0x3000 > n_aliases=4 > [0.00] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, > Nodes=1 > [0.00] Mount-cache hash table entries: 512 > [0.00] CPU: SH7750 > [0.00] net_namespace: 64 bytes > [0.00] NET: Registered protocol family 16 > [0.00] Maple bus at (0, 0): Connected function 0x0 > [0.00] No maple driver found for this device > [0.00] Maple bus at (1, 0): Connected function 0x0 > [0.00] No maple driver found for this device > [0.00] Maple bus at (2, 0): Connected function 0x0 > [0.00] No maple driver found for this device > [0.00] Maple bus at (3, 0): Connected function 0x0 > [0.00] No maple driver found for this device > [0.00] Maple bus core now registered. > [0.00] DMA: Registering DMA API. > [0.00] DMA: Registering sh_dmac handler (4 channels). > [0.00] Maple bus at (0, 0): Connected function 0x1 > [0.00] No maple driver found for this device > [0.00] kobject (8cc2d360): tried to init an initialized object, > something is seriously wrong. The problem is here. You have possibly already initialized this object, or called 'kobject_get' on it before registering it with the driver core. This is a new sanity check that has been in the -mm tree for years :) So I think something needs to be fixed in the code. Do you want me to take a look at it? thanks, greg k-h -- 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/
Re: kobject oops with maple bus
On 26/01/2008, Adrian McMenamin <[EMAIL PROTECTED]> wrote: > Greg, > > Just updated my git to the latest sources and get these (seemingly non-fatal) > oops with the Dreamcast maple bus. I'll investigate further, but they may > mean something to out out of the box. > > Adrian > > > > > dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL > PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 > [0.00] console [sercon0] enabled > [0.00] Booting machvec: Sega Dreamcast > [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 > [0.00] Zone PFN ranges: > [0.00] Normal 49152 ->53248 > [0.00] Movable zone start PFN for each node > [0.00] early_node_map[1] active PFN ranges Oh, and I've just noticed everythung appears to be timed to 0 too. Very odd. -- 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/
kobject oops with maple bus
Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 [0.00] console [sercon0] enabled [0.00] Booting machvec: Sega Dreamcast [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 [0.00] Zone PFN ranges: [0.00] Normal 49152 ->53248 [0.00] Movable zone start PFN for each node [0.00] early_node_map[1] active PFN ranges [0.00] 0:49152 ->53248 [0.00] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4064 [0.00] Kernel command line: root=/dev/nfs rw nfsroot=192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial video=pvr2fb:[EMAIL PROTECTED] consol7 [0.00] PID hash table entries: 64 (order: 6, 256 bytes) [0.00] Using tmu for system timer [0.00] Using 12.469 MHz high precision timer. [0.00] Console: colour dummy device 80x25 [0.00] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) [0.00] Memory: 13468k/16384k available (1918k kernel code, 645k data, 96k init) [0.00] PVR=040205c1 CVR= PRR= [0.00] I-cache : n_ways=1 n_sets=256 way_incr=8192 [0.00] I-cache : entry_mask=0x1fe0 alias_mask=0x1000 n_aliases=2 [0.00] D-cache : n_ways=1 n_sets=512 way_incr=16384 [0.00] D-cache : entry_mask=0x3fe0 alias_mask=0x3000 n_aliases=4 [0.00] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1 [0.00] Mount-cache hash table entries: 512 [0.00] CPU: SH7750 [0.00] net_namespace: 64 bytes [0.00] NET: Registered protocol family 16 [0.00] Maple bus at (0, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (1, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (2, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (3, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus core now registered. [0.00] DMA: Registering DMA API. [0.00] DMA: Registering sh_dmac handler (4 channels). [0.00] Maple bus at (0, 0): Connected function 0x1 [0.00] No maple driver found for this device [0.00] kobject (8cc2d360): tried to init an initialized object, something is seriously wrong. [0.00] Stack: (0x8cc1be88 to 0x8cc1c000) [0.00] be80: 8c00762e 8cc1be98 8c27d050 8cc2d360 8c103890 8cc1bea0 [0.00] bea0: 8c14435e 8cc1beb0 8cc2d200 8cc2d2f8 8cc2d200 8c144aae 8cc1bec0 8cc2d2f8 [0.00] bec0: 8c159aa8 8cc1becc 0001 8c159e58 8cc1beec 8cc69880 fffe 8c159d20 [0.00] bee0: 8c27e14c 8cc2d200 8c27e13c 8cc1bf10 8c02e7c0 8cc0ea3c 8c1dbf60 8c02a2da [0.00] bf00: 8cc1bf1c 8c018b60 fffe 8c159d20 ff0f 8cc01240 8c27e13c 8c02a428 [0.00] bf20: 8cc1bf3c 8c02e7c0 <6>DMA: Registering pvr2_dmac handler (1 channel). [0.00] 8c02a220 8c02e940 8c02e200 8cc01248 8cc01240 [0.00] bf40: <6>DMA: Registering g2_dmac handler (4 channels). [0.00] 8cc0e9c0 8c02e9c0 8cc1bf48 8cc1bf48 8cc0e9c0 8c02e9c0 8cc1bf48 [0.00] bf60: 8cc1bf48 8c02e25a 8cc1bf84 fffc 8c013900 8c02a3a0 8cc01240 [0.00] bf80: 8c02e200 8c0038c4 [0.00] bfa0: Autoconfig PCI channel 0x8c27e36c [0.00] Scanning bus 00, I/O 0x01001600:0x01003600, Mem 0x0184:0x01848000 [0.00] 00:00.0 Class 0200: 11db:1234 (rev 10) [0.00] I/O at 0x01001600 [size=0x100] [0.00] Mem at 0x0184 [size=0x100] [0.00] 8cc11ec8 8c02e220 [0.00] bfc0: <5>PCI: Fixing up device :00:00.0 [0.00] 8cc1bfa0 [0.00] bfe0: 8c0038c0 4000 [0.00] [0.00] Call trace: [0.00] [<8c00762e>] dump_stack+0xe/0x9e0 [0.00] [<8c103890>] kobject_init+0x30/0xa0 [0.00] [<8c14435e>] device_initialize+0x1e/0xa0 [0.00] [<8c144aae>] device_register+0xe/0x40 [0.00] [<8c159aa8>] maple_attach_driver+0x128/0x1c0 [0.00] [<8c159e58>] maple_dma_handler+0x138/0x300 [0.00] [<8c159d20>] maple_dma_handler+0x0/0x300 [0.00] [<8c02e7c0>] prepare_to_wait+0x0/0xc0 [0.00]
kobject oops with maple bus
Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 [0.00] console [sercon0] enabled [0.00] Booting machvec: Sega Dreamcast [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 [0.00] Zone PFN ranges: [0.00] Normal 49152 -53248 [0.00] Movable zone start PFN for each node [0.00] early_node_map[1] active PFN ranges [0.00] 0:49152 -53248 [0.00] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4064 [0.00] Kernel command line: root=/dev/nfs rw nfsroot=192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial video=pvr2fb:[EMAIL PROTECTED] consol7 [0.00] PID hash table entries: 64 (order: 6, 256 bytes) [0.00] Using tmu for system timer [0.00] Using 12.469 MHz high precision timer. [0.00] Console: colour dummy device 80x25 [0.00] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) [0.00] Memory: 13468k/16384k available (1918k kernel code, 645k data, 96k init) [0.00] PVR=040205c1 CVR= PRR= [0.00] I-cache : n_ways=1 n_sets=256 way_incr=8192 [0.00] I-cache : entry_mask=0x1fe0 alias_mask=0x1000 n_aliases=2 [0.00] D-cache : n_ways=1 n_sets=512 way_incr=16384 [0.00] D-cache : entry_mask=0x3fe0 alias_mask=0x3000 n_aliases=4 [0.00] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1 [0.00] Mount-cache hash table entries: 512 [0.00] CPU: SH7750 [0.00] net_namespace: 64 bytes [0.00] NET: Registered protocol family 16 [0.00] Maple bus at (0, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (1, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (2, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (3, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus core now registered. [0.00] DMA: Registering DMA API. [0.00] DMA: Registering sh_dmac handler (4 channels). [0.00] Maple bus at (0, 0): Connected function 0x1 [0.00] No maple driver found for this device [0.00] kobject (8cc2d360): tried to init an initialized object, something is seriously wrong. [0.00] Stack: (0x8cc1be88 to 0x8cc1c000) [0.00] be80: 8c00762e 8cc1be98 8c27d050 8cc2d360 8c103890 8cc1bea0 [0.00] bea0: 8c14435e 8cc1beb0 8cc2d200 8cc2d2f8 8cc2d200 8c144aae 8cc1bec0 8cc2d2f8 [0.00] bec0: 8c159aa8 8cc1becc 0001 8c159e58 8cc1beec 8cc69880 fffe 8c159d20 [0.00] bee0: 8c27e14c 8cc2d200 8c27e13c 8cc1bf10 8c02e7c0 8cc0ea3c 8c1dbf60 8c02a2da [0.00] bf00: 8cc1bf1c 8c018b60 fffe 8c159d20 ff0f 8cc01240 8c27e13c 8c02a428 [0.00] bf20: 8cc1bf3c 8c02e7c0 6DMA: Registering pvr2_dmac handler (1 channel). [0.00] 8c02a220 8c02e940 8c02e200 8cc01248 8cc01240 [0.00] bf40: 6DMA: Registering g2_dmac handler (4 channels). [0.00] 8cc0e9c0 8c02e9c0 8cc1bf48 8cc1bf48 8cc0e9c0 8c02e9c0 8cc1bf48 [0.00] bf60: 8cc1bf48 8c02e25a 8cc1bf84 fffc 8c013900 8c02a3a0 8cc01240 [0.00] bf80: 8c02e200 8c0038c4 [0.00] bfa0: Autoconfig PCI channel 0x8c27e36c [0.00] Scanning bus 00, I/O 0x01001600:0x01003600, Mem 0x0184:0x01848000 [0.00] 00:00.0 Class 0200: 11db:1234 (rev 10) [0.00] I/O at 0x01001600 [size=0x100] [0.00] Mem at 0x0184 [size=0x100] [0.00] 8cc11ec8 8c02e220 [0.00] bfc0: 5PCI: Fixing up device :00:00.0 [0.00] 8cc1bfa0 [0.00] bfe0: 8c0038c0 4000 [0.00] [0.00] Call trace: [0.00] [8c00762e] dump_stack+0xe/0x9e0 [0.00] [8c103890] kobject_init+0x30/0xa0 [0.00] [8c14435e] device_initialize+0x1e/0xa0 [0.00] [8c144aae] device_register+0xe/0x40 [0.00] [8c159aa8] maple_attach_driver+0x128/0x1c0 [0.00] [8c159e58] maple_dma_handler+0x138/0x300 [0.00] [8c159d20] maple_dma_handler+0x0/0x300 [0.00] [8c02e7c0] prepare_to_wait+0x0/0xc0 [0.00] [8c1dbf60]
Re: kobject oops with maple bus
On 26/01/2008, Adrian McMenamin [EMAIL PROTECTED] wrote: Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 [0.00] console [sercon0] enabled [0.00] Booting machvec: Sega Dreamcast [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 [0.00] Zone PFN ranges: [0.00] Normal 49152 -53248 [0.00] Movable zone start PFN for each node [0.00] early_node_map[1] active PFN ranges Oh, and I've just noticed everythung appears to be timed to 0 too. Very odd. -- 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/
Re: kobject oops with maple bus
On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 [0.00] console [sercon0] enabled [0.00] Booting machvec: Sega Dreamcast [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 [0.00] Zone PFN ranges: [0.00] Normal 49152 -53248 [0.00] Movable zone start PFN for each node [0.00] early_node_map[1] active PFN ranges [0.00] 0:49152 -53248 [0.00] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4064 [0.00] Kernel command line: root=/dev/nfs rw nfsroot=192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial video=pvr2fb:[EMAIL PROTECTED] consol7 [0.00] PID hash table entries: 64 (order: 6, 256 bytes) [0.00] Using tmu for system timer [0.00] Using 12.469 MHz high precision timer. [0.00] Console: colour dummy device 80x25 [0.00] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) [0.00] Memory: 13468k/16384k available (1918k kernel code, 645k data, 96k init) [0.00] PVR=040205c1 CVR= PRR= [0.00] I-cache : n_ways=1 n_sets=256 way_incr=8192 [0.00] I-cache : entry_mask=0x1fe0 alias_mask=0x1000 n_aliases=2 [0.00] D-cache : n_ways=1 n_sets=512 way_incr=16384 [0.00] D-cache : entry_mask=0x3fe0 alias_mask=0x3000 n_aliases=4 [0.00] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1 [0.00] Mount-cache hash table entries: 512 [0.00] CPU: SH7750 [0.00] net_namespace: 64 bytes [0.00] NET: Registered protocol family 16 [0.00] Maple bus at (0, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (1, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (2, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (3, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus core now registered. [0.00] DMA: Registering DMA API. [0.00] DMA: Registering sh_dmac handler (4 channels). [0.00] Maple bus at (0, 0): Connected function 0x1 [0.00] No maple driver found for this device [0.00] kobject (8cc2d360): tried to init an initialized object, something is seriously wrong. The problem is here. You have possibly already initialized this object, or called 'kobject_get' on it before registering it with the driver core. This is a new sanity check that has been in the -mm tree for years :) So I think something needs to be fixed in the code. Do you want me to take a look at it? thanks, greg k-h -- 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/
Re: kobject oops with maple bus
On Sat, 2008-01-26 at 12:44 -0800, Greg KH wrote: On Sat, Jan 26, 2008 at 07:53:20PM +, Adrian McMenamin wrote: Greg, Just updated my git to the latest sources and get these (seemingly non-fatal) oops with the Dreamcast maple bus. I'll investigate further, but they may mean something to out out of the box. Adrian dreamy:~# [0.00] Linux version 2.6.24-gf0ea9c3d-dirty ([EMAIL PROTECTED]) (gcc version 3.4.6) #328 PREEMPT Sat Jan 26 19:45:30 GMT 2008 [0.00] console [sercon0] enabled [0.00] Booting machvec: Sega Dreamcast [0.00] Node 0: start_pfn = 0xc000, low = 0xd000 [0.00] Zone PFN ranges: [0.00] Normal 49152 -53248 [0.00] Movable zone start PFN for each node [0.00] early_node_map[1] active PFN ranges [0.00] 0:49152 -53248 [0.00] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4064 [0.00] Kernel command line: root=/dev/nfs rw nfsroot=192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial video=pvr2fb:[EMAIL PROTECTED] consol7 [0.00] PID hash table entries: 64 (order: 6, 256 bytes) [0.00] Using tmu for system timer [0.00] Using 12.469 MHz high precision timer. [0.00] Console: colour dummy device 80x25 [0.00] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) [0.00] Memory: 13468k/16384k available (1918k kernel code, 645k data, 96k init) [0.00] PVR=040205c1 CVR= PRR= [0.00] I-cache : n_ways=1 n_sets=256 way_incr=8192 [0.00] I-cache : entry_mask=0x1fe0 alias_mask=0x1000 n_aliases=2 [0.00] D-cache : n_ways=1 n_sets=512 way_incr=16384 [0.00] D-cache : entry_mask=0x3fe0 alias_mask=0x3000 n_aliases=4 [0.00] SLUB: Genslabs=9, HWalign=32, Order=0-1, MinObjects=4, CPUs=1, Nodes=1 [0.00] Mount-cache hash table entries: 512 [0.00] CPU: SH7750 [0.00] net_namespace: 64 bytes [0.00] NET: Registered protocol family 16 [0.00] Maple bus at (0, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (1, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (2, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus at (3, 0): Connected function 0x0 [0.00] No maple driver found for this device [0.00] Maple bus core now registered. [0.00] DMA: Registering DMA API. [0.00] DMA: Registering sh_dmac handler (4 channels). [0.00] Maple bus at (0, 0): Connected function 0x1 [0.00] No maple driver found for this device [0.00] kobject (8cc2d360): tried to init an initialized object, something is seriously wrong. The problem is here. You have possibly already initialized this object, or called 'kobject_get' on it before registering it with the driver core. This is a new sanity check that has been in the -mm tree for years :) So I think something needs to be fixed in the code. Do you want me to take a look at it? I think it is probably registering the dummy driver a second or further time. Does that make sense? By all means have a look, but I'll have a go - I'm sure you have better things to do than mess about with Dreamcast code :) -- 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/
